Tutorial Vantage Pdms - Hvac Design Volume 1

HVAC Design Using VANTAGE PDMS Volume 1 Version 11.4

pdms114/man7/doc1 Issue 140502

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E

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Contents Volume 1 Part I 1

Read This This Firs irst 1.1 1.2 1.3 1.4 1.5

2

The Scope of the Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Learning to Use PDMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Further Training in the Use of PDMS . . . . . . . . . . . . . . . Some Terms and Conventions . . . . . . . . . . . . . . . . . . . . . . . How the Guide is Organised . . . . . . . . . . . . . . . . . . . . . . . .

1 -- 1 1 -- 1 1 -- 2 1 -- 3 1 -- 4

What What PDM DMS S Offe Offerrs You

Par Part II 3

Introduction

Gett etting ing Sta Started

Cont Contro roll llin ing g PDM DMS S 3.1 3.2 3.3 3.4 3.5 3.4

3.7 3.8

Accessing the Design Environment . . . . . . . . . . . . . . . . . . Using the Mouse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the Tool Bar Buttons . . . . . . . . . . . . . . . . . . . . . . . . . The Status Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using Forms and their Controls . . . . . . . . . . . . . . . . . . . . . 3.6.1 Using Radio Buttons . . . . . . . . . . . . . . . . . . . . . . . 3.6.2 Using Check Boxes (Toggle Buttons) . . . . . . . . . 3.6.3 Using Text-- Boxes . . . . . . . . . . . . . . . . . . . . . . . . . . 3.6. 3.6.4 4 Usin Using g DropDrop--Down - Down List Listss (Opt (Optio ion n But Buttons tons)) . . . . 3.6.5 Using Scrollable Lists . . . . . . . . . . . . . . . . . . . . . . 3.6.6 Actioning Form Inputs . . . . . . . . . . . . . . . . . . . . . Alert Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accessing On -- Line Help . . . . . . . . . . . . . . . . . . . . . . . . . . .

HVAC Design Using VANTAGE PDMS Version 11.4

3 -- 2 3 -- 4 3 -- 5 3 -- 6 3 -- 6 3 -- 6 3 -- 7 3--7 -7 3 -- 7 3--8 3 -- 8 3 -- 9 3 -- 9 3 -- 9 i

4

How How De Desi sign gn Da Data ta is Stor Stored ed and and Viewed iewed 4.1 4.2 4.3

4.4

5

5.3 5.4 5.5 5.6 5.7

HVAC HVAC Comp Compon onen entt Repr Repres esen enttatio ation n in the the Cata Catalo logu gue e ... Resto Restorin ring g Your PDMS PDMS Sessio Session n and Start Starting ing the HVAC HVAC . . . . . . . .A . .p.p.l.ic. a. t.i.o.n. . . . . . . . . . . . . . . . . . . . . . Setting the Current Detailing Specification . . . . . . . . . . Creating Some Administrative Elements . . . . . . . . . . . . . Creating HVAC Components . . . . . . . . . . . . . . . . . . . . . . . . How How PDMS Represents Composite ite Componen nents . . . . . . Creating HVAC Components (Continued) . . . . . . . . . . . .

5--1 5--1 5 -- 2 5--5 -5 5 -- 6 5 -- 7 5--11 -11 5 - 12 12

The Grid/Tiling Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 -- 1 Creating Some Side Branches . . . . . . . . . . . . . . . . . . . . . . . 6 -- 4

Comp Comple leti ting ng the the De Desi sign gn 7.1 7.2 7.3 7.4 7.5

8

4 -- 10

Addi Adding ng to the the HV HVAC AC Mode Modell 6.1 6.2

7

4 -- 1 4 -- 3 4 -- 4 4- 5 4 -- 7

Routi Routing ng a Sequ Sequenc ence e of HV HVAC AC Comp Compon onent ents s 5.1 5.1 5.2

6

How PDMS Stores Design Data . . . . . . . . . . . . . . . . . . . . . The Existing Design Hierarchy . . . . . . . . . . . . . . . . . . . . . Viewing the Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3.1 Defining What Appears in the View . . . . . . . . . 4.3.2 Manipulating the Displayed View . . . . . . . . . . . Saving Saving the Curre Current nt Design Design and Leavin Leaving g Your Design Design Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Filling Ductwork Gaps Automatically . . . . . . . . . . . . . . . Adding Stiffening Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . Automatic Item Numbering and Naming . . . . . . . . . . . . Finishing Off Some Design Details . . . . . . . . . . . . . . . . . . Changing the View Representation . . . . . . . . . . . . . . . . . .

7 -- 1 7 -- 3 7 -- 4 7 -- 6 7 -- 7

Chec Checkin king g and and Output Outputtin ting g De Desig sign n Da Data ta 8.1 8.2 8.3 8.4 8.5 8.6

Querying Some Data Settings . . . . . . . . . . . . . . . . . . . . . . . Checking for Design Data Inconsistencies . . . . . . . . . . . . Checking for Clashes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Generating a Data Output Report . . . . . . . . . . . . . . . . . . . Plotting the Design Model . . . . . . . . . . . . . . . . . . . . . . . . . . Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 -- 1 8- 2 8 -- 4 8 -- 7 8 -- 10 8 -- 16

Index

ii


Volume 2 Part Part III A

Refe Re fere renc nce e Appe Append ndic ices es

The The Me Menu nu Hier Hierar arch chie ies s A.1 The HVAC Designer Application Menus. . . . . . . . . . . . . A -- 1 A.2 A.2 The 3D View iew Menus enus (Rig (Right ht---Hand -Hand Mouse ouse Butt utton) . . . . A--5 A.3 The 3D Aid Constructs Menus. . . . . . . . . . . . . . . . . . . . . . A -- 6 A.4 The Reference Definition Application Menus. . . . . . . . . A--7 A.5 The Lists/Collections Men.u.s. . . . . . . . . . . . . . . . . . . . . . A -- 7 A.6 The 2D Viewing Plane Menu.s. . . . . . . . . . . . . . . . . . . . . . A -- 8

B

The HV HVAC AC De Desig sign n Da Datab tabas ase e

C

HVAC HV AC Ca Cata talo logu gue e Guid Guide e C.1 C.2 C.3 C.4 C.5 C.6 C.7 C.8 C.9 C.10 C.11

C.12

D

C -- 1 C -- 3 C -- 5 C -- 19 C -- 34 C -- 43 C -- 48 C -- 59 C -- 71 C -- 79 C -- 80 C--80 -80 C--81 C -- 82

Other Other Re Rele leva vant nt Docu Docume menta ntatio tion n D.1 D.2 D.3 D.4

E

The Basic Features of the Catalogue . . . . . . . . . . . . . . . . . HVAC Branches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rectangular Components . . . . . . . . . . . . . . . . . . . . . . . . . . . Circular Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Flat Oval Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transformations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Branch Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inline Plant Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . Extra Plant Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . HVAC Equipment Nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . Types of Joint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C.11.1 Joints for Components of Any Shape . . . . . . . . C.1 C.11.2 1.2 Join Jointts for for Rect Rectan angu gula larr Comp Compon onen entts Only Only . . . . Design Parameters and Properties . . . . . . . . . . . . . . . . . .

On -- Line Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PDMS Introductory Guides . . . . . . . . . . . . . . . . . . . . . . . . . PDMS Reference Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . General Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D -- 1 D -- 2 D -- 2 D -- 3

Some ome Sampl ample e Plots lots

Index


iii

Part I Introduction


1

Read This First

1. 1

The Scope of the Guide This guide introduces the facilities provided by Cadcentre for the design and documentation of interconnected Heating, Ventilation and Air Conditioning (HVAC) ducting networks. It assumes that you are already familiar with HVAC design practices, but does not assume any prior knowledge of computer--aided design systems. The guide explains the main concepts underlying PDMS and its supportin supporting g applicati applications, ons, and shows how you can apply these to your own design projects. A key feature of the guide is a handshand s--o -on n tutorial exercise which is incorporated throughout, allowing you to gain practical experience of the ways in which you can use PDMS as you learn about the powerful facilities which it provides. This guide does not give stepstep --by-by --step instructions on how to carry out specific specific design functions, since you can access such informatio information n as you work by using the on--li on--line ne help facilities facil ities incorporated into the program’s graphical user interface. You will be told how to do this at an early stage. For fuller information about all aspects of HVAC design (and other related disciplines) using PDMS, refer to the sources listed in Appendix D of this guide.

1. 2

Learning to Use PDMS The aim of this guide is to help you to learn to use PDMS and its supporting applications for your HVAC design work as quickly as possible. Once you have grasped the basic principles, you will find that most operations quickly become intuitive.


1--1

Read This First

The best way to learn is to experiment with the product for yourself. To facilitate this, the initial chapters of the guide comprise two concurrent sequences of information: D

A handshands --on on tutorial tutori al exercise exer cise , which gives a step--by--step practical introduction to the ways in which you might use the applications.

D

Explanations of the underlying concepts, given at the points at which each is first encountered as the exercise progresses.

The intention is that you should work progressively through the exercise, pausing to learn about each new concept as it is introduced. All steps which make up the exercise are numbered sequentially throughout the guide. The start and end of each part of the exercise are marked by lines across the page to separate them from the general information sections, like this:

1.3 1. 3

Furt Furthe herr Tra rain inin ing g in the the Us Use e of PD PDMS MS Although this guide will teach you to understand the key features of using PDMS for your HVAC designs, it cannot possibly show you all of the wide--ranging wide--ranging facilities to which you now have access, nor can it identify the best ways in which you might use the program to suit your own individual design practices. To get the best out of PDMS, it is important that you receive proper training in its use from a qualified instructor, who can answer your questions as they arise and give you advice on tailoring your techniques to best match your objectives. A wide range of training courses are provided by Cadcentre Ltd, covering all levels of expertise and all design disciplines. To arrange attendance on such a course, contact your nearest Cadcentre support office for further details (see the copyright page at the front of this guide for a link to our web site).

1- 2


Read This First

1.4 1. 4

Some Some Terms rms and Conven nventi tion ons s As you might imagine, a program with the widewide --ranging power of PDMS is necessarily large and, if you had simultaneous access to all of its features, could be rather daunting. To make the whole program easily controllable, it is subdivided into convenient functional parts. These are referred to throughout this guide by the following terms: D

Modules are subdivisions of PDMS which you use to carry out specific types of operation. You will be mainly concerned with two modules only: DESIGN, used for creating the 3D design model and DRAFT, used for generating annotated and dimensioned drawings of your design.

D

Applications are supplementary programs, used in conjunction with PDMS, which have been tailored to provide easy control of those operations which are specific to particular disciplines. The application which we will be using for our HVAC design work is the HVAC Designer Application.

You can switch very rapidly between the different parts of the program, so that the distinctions between them become almost imperceptible, but you need to recognise what is happening when you select from the different functions available to you from the various menus. The following terms and conventions are used throughout this guide to describe what action to carry out:

Term

Description

Clic lick

Plac lace the mouse use curso ursorr over ver a spec pecifie ified d poin pointt, then hen quickly press and release the designated mouse button. If no button is specified, always use the left-hand mouse button.

Double--click

Place Place the mouse mouse cursor cursor over a specified specified point, point, then then click the leftleft --hand mouse button twice in quick succession.

Pick

Clic lick on the requir uired ite item to select it.

Drag Drag

Plac lace the mouse use curso ursorr over ver a spec pecifie ified d poin pointt, then hen press and hold down the designated mouse button while moving the cursor to a second specified point. Release the button over the second point.

Ent Enter

Type ype text text int into the the spec specif ifie ied d dial dialog ogue ue box, box, then then pres presss the Enter (or Return) key to confirm the entry.


1--3

Read This First

1.5

How the Guide is Organised This guide is divided divided into three parts, parts, including including some appendices appendices,, as follows: D

D

1- 4

Part I (this part) introduces the guide itself and the HVAC Designer application which it describes. D

Chapter 1 (this chapter) summarises the scope of the guide.

D

Chapter 2 gives a general overview of the main design facilities provided within the HVAC Designer application.

Part II explains, with the help of a worked example, some essential concepts which you need to understand when you use the HVAC Designer application. D

Chapter 3 gives you a general guide to using the PDMS graphical user interface, including an explanation of how to access detailed on--line on--line help. If you are already familiar with similar forms and menus interfaces interfaces,, you should be able to read through this chapter rapidly. Do not ignore it altogether, however, as it tells you how to load the HVAC Designer application which forms the basis for the tutorial exercise.

D

Chapter 4 explains how PDMS stores its design data and shows you how to view the design model graphically.

D

Chapter 5 demonstrates the key features of HVAC design using PDMS and shows you how to build up a ductwork sequence component by component.

D

Chapter 6 shows you how to extend the basic ductwork sequence sequence by adding adding side branches branches to form a more complex complex network. In doing so, it introduces a useful facility for creating a reference grid which can be used to position ceiling tiles for locating HVAC grilles etc.

D

Chapter 7 explains some ways of finishing off the design details by using some automated facilities provided by the application.

D

Chapter 8 shows how to check your design for errors and inconsistencies, and how to generate reports and plots directly from the design data. HVAC Design Using VANTAGE PDMS Version 11.4

Read This First

D

D

Part III comprises the following set of reference appendices: D

Appendix A shows the complete hierarchy of all options available from the application bar menus, pull--down pull--down menus and submenus in a convenient quick --reference format.

D

Appendix B summarises the database hierarchy which PDMS uses to store your HVAC design data.

D

Appendix C contains annotated illustrations of all of the HVAC components which are provided in the catalogue database which forms an integral part of the product.

D

Appendix D identifies other sources of information which supplement supplement,, and expand upon, the brief details given in this guide.

D

Appendix E contains some examples of the types of HVAC layout plots which can be produced easily by using PDMS.

The guide concludes with an Index, allowing you to refer back to any specific topics about whose details you need to be reminded.


1--5

2

What PDMS Offers You

PDMS plus the Cadcentre HVAC Designer and related applications provide provide a powerful powerful suite of facilities facilities for the creation creation,, analysis analysis and documentation of interconnected HVAC ducting networks. The design modelling functions incorporate a degree of ‘intelligence’ which, where possible, makes sensible decisions about the consequential effects of many of your design changes, so that you can implement a sequence of related changes with a minimum of effort. The emphasis throughout is on maximising both design consistency and design productivity, so that you need only make a minimum number number of essential essential design decisions decisions in order order to create create a reliable reliable and fully documented ductwork design ready for fabrication and erection. Modifications to your design may be incorporated at any stage without fear of invalidating any of your prior work, since data consistency checking is an integral part of the product. PDMS automatically manages drawing production, material take--off reports, etc., by reading all design data directly from a common set of databases, so that there can be no errors introduced by transcribing information between different disciplines. The applications let you check all aspects of the design as the work progresses, including onon --line interdisciplinary clash detection, so that the chances of errors and inconsistencies reaching the final documented design are reduced to an exceptionally low level. The need for expensive on--site on--site modifications is thereby avoided. The applications, which have been designed by HVAC engineers for HVAC engineers, are controlled from a graphical user interface. This means that all design, drawing and reporting operations are initiated simply by selecting choices from simple menus and entering data into the appropriate fields on on--screen on--screen forms. f orms. In most cases you can select the components you require by picking them from a set of diagrammatic representations, thus simplifying the user interface HVAC Design Using VANTAGE PDMS Version 11.4

2--1

Read This First

still further. Should you need guidance on the use of any of the powerful facilities provided within the application, on --screen help is available at the click of a button. Some key features:

2--2

D

The HVAC Designer application lets you build up and detail complex ducting networks simply by selecting components from standard catalogues. By using standard default settings, a conceptual layout can be created and analysed rapidly, leaving the design details to a later post--approval post--approval stage.

D

The application provides facilities for creating rectangular, circular and oval cross--sectional cross--sectional items. Individual design components can be selected from over 100 parametric catalogue items covering all likely requirements, including a range of auxiliary items such as stiffening frames, access panels, splitter plates etc., all of which will be accurately detailed in the design model. The catalogue also includes a range of inline plant items such as centrifugal and axial fans, air handling units, silencers, dampers etc., each ready for insertion into the design model in a single operation.

D

User--definable User--definable detailing specifications, such as those for construction materials, ductwork gauge, flange dimensions etc., define precise manufacturing requirements. User--definable default settings ensure compliance with company standards and a high level of design consistency throughout the project.

D

Accurate geometric representation of all design items ensures reliable clash checking during the design process, leading to good space management and the early elimination of positional errors.

D

Explicitly positioned design components are interconnected automatically with implied ductwork as the design of the ductwork sequence is built up. An autofilling facility is provided which can then calculate the optimum use of standard ducting straights to complete the material take--off take--off list for the entire network.

D

Several design aids are incorporated, including a facility for creating horizontal grids which can be used to position ceiling tiles. This can greatly aid the layout of building services in an architectural architectural environment. HVAC Design Using VANTAGE PDMS Version 11.4

Read This First

D

HVAC elements may be named in accordance with a predefined set of rules, so that their positions in the database hierarchy are always obvious without you having to enter specific texts during the design process.

D

The application’s user interface can be tailored readily to suit the level of experience of any individual user. In particular, graphical illustrations of all catalogue items can be displayed if required to simplify component selection and dimensioning.

D

At any stage of your work, you can create reports listing specified data read from the current database. You can specify a standard report template, enabling you to derive lists of commonly required information extremely rapidly, or you can design a one --off report format to suit any special needs. The resulting output, which can include data from any design discipline, sorted in any way you require, can be either displayed on your screen or sent to a file (for storage and/or for printing).


2--3

Part II Getting Started


3

Controlling PDMS

This chapter introduces the techniques for controlling PDMS using the graphical user interface which you will see on your screen. To do this, we will begin the tutorial exercise by entering PDMS and accessing that part of the program which you will use to specify your HVAC design data. It is assumed that you are already logged in to your workstation and that you know enough about its operating system to enable you to run a program such as PDMS from an appropriate directory. It is also assumed that you know how to open and manipulate windows on your computer by using the mouse. If not, you first need to read the manuals supplied with your computer system or seek advice from your computer systems department. In order for you to use the tutorial exercise, the HVAC Designer application and the sample PDMS project (Project SAM) supplied must have been correctly installed and you must have been given read/write access to the project databases. This procedure, which should have been carried out by your PDMS administrator as part of the product installation sequence, is beyond the scope of this guide.

Important Note: The precise appearance of the graphical user interface used to control PDMS depends on the hardware platform on which you are running the program, program, particular particularly ly on whether whether your workstat workstation ion uses an NT or a Unix operating operating system. system. What you see on your screen screen may therefore therefore differ in detail from the illustrations in this guide (which are based on the NT version). version). The positions positions and names of the individual individual controls controls will not differ significantly, but their shapes and methods of use may not be quite quite as shown. Follow Follow the descriptio descriptions ns of how to use the interface with this in mind. HVAC Design Using VANTAGE PDMS Version 11.4

3--1

Controlling Controlling PDMS

3.1 3. 1

Acce Ac cess ssin ing g the the De Desi sign gn Envi Enviro ronm nmen entt

Exercise begins:

1.

Start PDMS. The CADCENTRE PDMS Login form requires you to specify the following information for your intended session: S

The name of the Project in which you want to work. Enter SAM.

S

Your allocated User Name and Password. Enter HVAC for each.

S

The parts of the project database (i.e. which Multiple want to work work in. Enter Enter HVAC. Database or MDB) you want

S

The type of operation you want to carry out on the project data (i.e. which functional Module of PDMS you want to use). Select Design. (The Read Only button must remain Off, so that you can modify the database as you work.)

S

Whether you want to start from the application’s default settings (Load from Macro Files) or from a customised setup saved during an earlier session ( Load from Binary Files). Select Macro Files.

You can either type in each entry explicitly, or click the down arrow next to the text--box text--box and select the required option from the resulting list. The settings which you need to enter are as follows:

Enter password

HVAC

Click OK and wait while the application is loaded. The resulting window is: 3--2



Main Menu Bar Main Tool Bar

Members List

3D Graphical View

3D View Tool Bar

Status Bar

D

area from from which which you you select select the the principa principall Main Menu Bar  the area commands. The title bar of this window shows the current PDMS module and its sub --application (if relevant) in which you y ou are working; in this case, the General application of the Design module.

D

provides shortshort--cuts to some some commo common n Main Tool bar  provides operations and standard settings via icon buttons and drop--down option lists.

D

current posit position ion in the datab database ase Members List  shows your current hierarchy. You can move to a different point in the database by using the leftleft --hand mouse button to pick the required item in the list.

D

the window window in which which you you will will displa display y the 3D Graphical View  the design model graphically as it is being built up. Note that this window has a poppop --up up menu , selectable by using the right-hand mouse button, from which you will select options to control the ways in which the model is represented. It also has its own tool bar, the 3D View Tool Bar.


3--3


D

displays informat information ion about about the the current current stat status us of Status Bar  displays your operations. It is located across the bottom of the main window.

You can reposition or minimise these windows at any time by using the standard window management facilities provided by your workstation (but do not close them in this way).

3.2

Using the Mouse You use the mouse to steer the graphics cursor around the screen and to select or ‘pick’ items by using the mouse buttons. The buttons perform different tasks depending on the type of window, and the position within the window, where the cursor is positioned. The appearance of the cursor will change according to the type of display item that is underneath it. The functions of the buttons are:

LeftLeft -- Hand Button: But ton: The left--han left--hand d button is the main button for selecting items. On a l eft--hand -hand button with the cursor over a graphical view , clicking the leftdesign element results in that element becoming the current element (that is, the design item on which you want to carry out the next operation). operation). In a sequence sequence of menus, dragging with the leftleft --hand button activates the command represented by the highlighted menu option when the button is released. On a form, the effect depends on the type type of gadget that that has been been selected selected  see Section Section 3.6 for detai details. ls. Middle Button: The principal use of the middle mouse button in DESIGN is to manipulate a graphical view. RightRight -- Hand Button: But ton: The principal use of the right--hand right--hand mouse button in DESIGN is to access the menu options specific to the graphical view window.

3.3

Using Menus There can be three types of option in a pullpull --down or pop--up pop--up menu:

3--4



CE CE

Options shown as plain text: selecting one of these initiates an action immediately.

Cl a s he s . . .

Options followed by three dots: selecting one of these displays a form on which to select options, enter data, etc.

Rep or t s

Options followed by a triangular pointer: selecting one of these displays a subsidiary menu giving a further range of options. Throughout this guide, related selections from menus are shown in abbreviated form by using the > symbol as a separator. Thus, the sequence Utilities>Reports>Create means ‘select Utilities from the main menu bar, then select Reports from the resulting pull--down pull--down menu, then move the cursor to the right and an d select Create from the resulting submenu’.

3.4 3. 4

Usi sing ng the Tool Bar Butt uttons The tool bar is displayed immediately below the main menu bar in the application window. It contains a number of icon buttons which let you carry out common tasks without searching for the options in the menus. The actions of the buttons are explained in the onon --line help. If you y ou pause the cursor over a button, a tool--tip tool--tip pop--up pop--up will remind you of the function of the button. To activate a button, simply click on it.

NOTE: The tool bar can be switched off, or displayed with larger icons. To do so, select Settings>System from the main menu bar and then set the required options on the resulting System Settings form.

3. 5

The Status Bar The status bar (the Status Form on Unix systems) displays messages telling you what actions the application is carrying out. You should look at it frequently, especially if the system appears to be waiting for you to do something, since it will always prompt you for any input or action which is required to carry out the next step of your current activity.


3--5


If the prompt lets you repeat a task an unspecified number of times, such as picking a selection of items using the cursor, you must press the Escape key (or click the Escape button on the Status Form ) when you have finished to indicate that you are ready to move to the next operation.

3.6 3. 6

Usi sing ng Forms orms and and their heir Cont ontrols rols Forms are used both to display information and to let you enter new data. Forms typically comprise an arrangement of buttons of various types, texttex t--bo -boxes xes , and scrollable lists. Input to a form is usually via a combination of mouse and keyboard, the mouse being used to select appropriate controls and the keyboard to enter data. While you have access to a form, you may change a setting, return to the initial values, accept and act on the current data, or cancel the form without applying applying any changes, according according to the nature nature of the form. This section describes how to use the principal types of gadget that you will see on the various forms.

3.6. 3.6.1 1

Usin Us ing g Ra Radi dio o Butt Button ons s Radio buttons are used to select one, and only one, from a group of options. The selection is mutually exclusive, so that selecting one option deselects others in that group automatically. They typically have the following appearance: Radio button On Radio button Off

To change the selected radio button in a group, click the required button.

3.6.2 3.6 .2

Using Usi ng Check Check Boxes Boxes (Tog (Toggle gle Butto Buttons ns)) Check boxes (toggle buttons on Unix systems) are used to switch an option between two states, typically On and Off. Unlike radio buttons,

3--6



they do not interact, so that you can select any combination to be On at the same time. They typically have the following appearance: NT

Check box On Check box Off

3.6. 3.6.3 3

Usin Us ing g Tex extt--Boxes -Boxes Text--boxes ext--boxes are the areas where you type in alphanumeric data such as names or dimensions. dimensions. A text--box will usually have a label to tell you what to enter. When you first open a form which contains text--boxes, text--boxes, the first text--box text--box on the form will be current and a text editing cursor (a vertical bar) will be displayed in the box. A text--box text--box often contain a default entry (e.g. unset) u nset) when first displayed. Some text--boxes text--boxes will accept only text or only numeric data, and entries with the wrong type of data will not be accepted. To enter data into a text--box:

3.6. 3.6.4 4

D

Click in the box to insert the text editing cursor.

D

Type in the required data, editing any existing entry as necessary. (You may need to delete the existing entry first.)

D

When you have finished, confirm the entry by pressing the Enter (or Return) key. Any text--box with an unconfirmed setting setting is highlighted highlighted by a yellow background. background.

Usin Us ing g DropDrop--Down -Down List Lists s Drop--down Drop--down lists let you choose one option from f rom a multiple selection. The list will usually have a label to tell you what you are setting and will show the current selection. They typically have the following appearance: NT Drop --Down List North


3--7


To change the setting, click on the down arrow or button face to reveal the full list of available available options, then pick the required required option. option.

3.6. 3.6.5 5

Usin Us ing g Scro Scroll llab able le Lists ists A scrollable list is displayed as a vertical list of options within the form, with vertical and horizontal scroll bars along its sides. To select an option, click on the line you want. The selected line will be highlighted. Some scrollable lists let you make only a single selection, so that selecting any option deselects all others automatically. Other lists let you make multiple selections, with all selected options highlighted simultaneously. To deselect a highlighted option in a multiple--choice list, click on it again (repeated clicks toggle a selection On and Off).

3.6. 3.6.6 6

Acti Ac tion onin ing g Form orm Inpu Inputs ts Most forms include at least one control button which is used either to enter the command option represented by your current form setting, to cancel any changes made to the form since you opened it, or to close the form. The common control buttons have the following actions:

Button

Action

OK

Enters the current form settings as command inputs and closes the form.

Apply

Enters the current form settings as command inputs and leaves the form displayed for further use.

Cancel

Cancels any changes made to the form’s settings and closes the form.

Reset

Cancels any changes made to the form’s settings and leaves the form displayed for further use.

Dismiss

Closes the form, keeping the current settings.

Some forms contain more specific types of control button which carry out particular command options (as indicated by the text on the button face; e.g. Add or Remove).

3.7

Alert Forms Alert forms are used to display information such as error messages, prompts and requests for confirmation of changes. You should respond

3--8



by carrying out the task prompted for or by clicking on the control buttons on the form (usually an OK or Cancel button).

3.8 3. 8

Acc cces essi sing ng On--Lin -Line He Help lp Most bar menus end with a Help option. Where available, on--line help gives detailed instructions on the use of the forms and menus via which you control each application. The Help option gives you the following f ollowing choices from its sub --menu:

Help>on Context This gives you help on any window currently visible in the display. When you select this option, the cursor changes to a question mark (?). Move the questio question n mark into the window window on which you want help and click the left--hand left--hand mouse button.

Help>Contents This displays the Help window so that you can find the required topic from the hierarchical contents list.

Help>Index This displays the Help window so that you can find all topics relevant to a selected keyword.

Help>About This displays information about the current operating system on your computer and about the versions of PDMS and its applications to which you have access. Pressing the F1 key at any time will display the help topic for the currently active window (equivalent to Help on Context for the current window). Exercise Exercise continues:

2.

Experiment with each of the Help options until you understand the search and navigation facilities for finding specific items of information. Use the Help>on Context option to read the help texts for any forms which you can currently see on your screen.


3--9


3.

When you are ready to continue, close any forms which you have been experimenting with as follows: D

If a form has a Dismiss button, click this button.

D

If a form has its own menu bar, select Control>Close from that menu.

D

Close any Help windows which are displayed by double--clicking double--clicking in the control box in the top leftleft --hand corner of each window. Alternatively, Alternatively, select File>Exit from the Help window’s menu bar.

Do not close the Members List or the 3D View windows, as you will use these in the next parts of the exercise.

You You are recommended to make full use of the on --line help facilities whenever you want clarification of any operations during the later steps of the exercise.

3--10


4

How Design Data is Stor tored and Viewed

In this chapter we will look at the ways in which design data is stored by PDMS and how the design model represented by this data can be viewed and manipulated. Although this guide is about the design of HVAC ducting networks, in practice you will usually route your ductwork with reference to some predefined predefined design items such as the framework, framework, floors and ceilings ceilings of a building. To show how this is done, we will consider briefly how these other items might be defined in PDMS, as well as looking at how we route sequences of HVAC components and ducting within them. Before we start to create HVAC design data, it is important that you know how such data is stored and accessed in the PDMS databases, so that you will understand the terminology which you will encounter during the design process. This is explained in the following section.

4.1 4. 1

How PDM DMS S Sto Stores De Des sign ign Da Datta All PDMS data is stored in a hierarchic or ‘tree’ format (similar to the way in which you use a hierarchy of directories and subdirectories to access your computer files). In the case of a PDMS Design database, the topmost data level is called the World (usually represented by the symbolic name /*), below which are the administrative sublevels Site and Zone. The names used to identify database levels below Zone depend on the specific engineering discipline for which the data is used. In the case of HVAC design data, the lower administrative levels (and their PDMS abbreviations) are HVAC and Branch (BRAN). Each HVAC can represent any portion of the overall ducting network. Each


4--1

How Design Data is Stored and Viewed

Branch within an HVAC represents a single sequence of components running between two, and only two, points known as the Branch Head and the Branch Tail. Each Branch represents items with a common specification. The data which defines the physical design of the individual HVAC components is held below Branch level. To represent the parts of the building within which we will route our ductwork, we use a different administrative level below Zone, namely the Structure (STRU) level. The physical design of each part of the building is represented by a set of basic 3D shapes known as Primitives, held below Structure level (in the examples which follow we use only rectangular BOX primitives). Holes through items are represented by Negative Primitives (we use negative boxes, NBOX primitives, where HVAC ducting is to pass through the walls). Together, these hierarchic levels give the following overall format: WORLD (/*) SITE

SITE

ZONE HVAC BRANCH

ZONE STRUCTURE Design data defining structural shapes (primitives and negative primitives)

Design data defining individual HVAC components (straights, bends, offsets, threeway connectors, inline plant etc.)

All data is represented in the database thus: D

Each identifiable item of data is known as a PDMS element.

D

Each element has a number of associated pieces of information which, together, completely define its properties. These are known as its attributes . Every element is identified within the database structure by an automatically--allocated reference number and, optionally, by a user--specified user--specified name. Additional items of information about an element which could be stored as attribute settings include:

4- 2

D

Its type

D

Its physical dimensions and technical specifications

D

Its physical location and orientation in the design model HVAC Design Using VANTAGE PDMS Version 11.4


Some attribute settings must be defined by you when you create a new element, others will be defined automatically by PDMS. The vertical link between two elements on adjacent levels of the database database hierarchy hierarchy is defined defined as an ownerowner --member me mber relationship. The element on the upper level is the owner of those elements directly linked below it. The lower level elements are members of their owning element. Each element can have many members, but it can have only one owner. When you are modifying a database (for example, when you are creating new elements or changing the settings of their attributes), you can consider yourself to be positioned at a specific point within the hierarchy. The element at this location is called the current element (often abbreviated to CE). You can navigate from any element to any other, thereby changing the current element, by following the ownerowner --member links up and down the hierarchy. In many cases, commands which you give for modifying the attributes of an element will assume that the changes are to be applied to the current element unless you specify otherwise, so you must understand this concept and always be aware of your current position in the database hierarchy. The Members List (see Section 3.1) will always show you this information.

4.2 4. 2

The The Exis Existi ting ng De Desi sign gn Hi Hier erar arch chy y In order to provide a starting point for the HVAC routing exercise, the sample database supplied already contains a simplified representation of a building built up from sets of box shapes. In this and the following section, we will look at this model in terms of its hierarchic structure and its 3D representation.


4--3


Exercise Exercise continues:

4.

List, which shows the element hierarchy Look at the Members List, which currently exists in the /HVAC multiple database.

Navigate up and down the hierarchy by clicking on the various elements. You will see that there are already a Site and a Zone (with the names /HVACSITE and /HVACZONE, respectively), and that the Zone owns several Structures (STRUs). Each Structure (whose name gives a clue to its function) owns one or more Boxes representing the various parts of the building. (If you or other users have accessed this database before, the list may contain other elements as well.)

4. 3

Viewing the Design In order to see what the design model looks like, and to enable us to identify identify design design items items by simply pointing pointing to them rather rather than by navigating to them in the Members List, List, we will display the existing design in a 3D View window and learn how to manipulate this display. First we will set the scale of the view, then the viewing direction, and finally we will specify which design elements we want to see and how we want them to be represented.

4- 4



4.3. 4.3.1 1

Defi Defini ning ng What What Appe Appear arss in the the View iew


5.

We want to see the whole of the building within which we are going to route our HVAC network, so navigate to the zone /HVACZONE in the Members List. Position the cursor in the 3D View window and hold down the right--hand right--hand mouse button to display the pop--up pop--up menu. Select Limits>CE (CE means Current Element). This adjusts the scale of the view automatically such that it corresponds to a volume just large enough to hold the chosen element(s); in this case, the Zone.

6.

Again using the 3D View menu, select Iso>Three to set an isometric view direction.

7.

If the graphical graphical view background background colour is not already black, select Settings>Background from the 3D View menu (if this option does not appear on the menu, select Settings>Long Menus and try again). Select Black from the resulting Background Colour palette.

8.

Select either Display>Drawlist from the main menu bar or Control>Drawlist from the Members List menu bar. The normal Members List will be replaced by an extended version entitled Members+Draw. Members+Draw. This lets you build up a list of all elements which you want to display, as shown in the Drawlist scrollable list in the lower part of the form. If this list already contains entries, click the All button in the Remove From Drawlist section to empty the list (the view should now show no design elements). In order to make it easier to distinguish between the various parts of the building, we will display the set of boxes represented by each Structure in a different colour. In the Add To Drawlist section of the form, click the Colour button and select Black from the resulting Drawlist Element Add Colour form. Notice how the pane next to the Colour button changes to show the currently selected colour. Now pick the Structure /HVACFLOOR in the list in the upper part of the form and click the Add CE button in the Add To Drawlist section to enter the selection into the Drawlist, thus:


4--5


Select item to add to Drawlist

Select colour in which item is to be displayed Click to add item to Drawlist

Now use the same sequence to add /HVACWALLS in Blue, /HVACCOLS (columns) in Green, and /HVACBEAMS in Note that that you you do do not add /HVACROOF, so that you can Cyan. Note see inside the building as you create the HVAC components in the next chapter. When you have finished, set the current colour to Grey , ready to display the HVAC components which we will create in the next chapter. Select Control>Close from the menu on the Members+Draw form to remove the form from the screen and replace it by the normal Members List. List. Notice how the colour palette is dismissed automatically when you dismiss the Members+Draw form. 4- 6



You should now see the building representation, something like this: Pick mode prompt

Vertical slider

Status line showing view direction, manipulation mode etc.

NOTE:

9.

4.3.2 4.3.2

Horizontal slider

If the horizontal and vertical sliders are not visible, select Settings>Borders from the 3D View menu to display them.

Observe the effect of selecting different view directions from the Look and Iso menu options provided by the 3D View menu. Revert to Iso>Three when you have finished.

Mani Manipu pula lati ting ng the the Disp Displa laye yed d View iew You can manipulate the displayed model view in a number of ways. The three basic operations which we will look at here are: D

Rotate the view

D

Pan the view across the display area

D

Zoom in or out to magnify or reduce the view

The current manipulation mode is shown in the status line at the bottom of the 3D View window (it is set to Rotate in the preceding illustration). To change the view manipulation mode, look at the View Control options on the pop--up pop--up menu. The options of interest are Zoom, Pan and Rotate. HVAC Design Using VANTAGE PDMS Version 11.3

4--7


Alternatively, you can change the manipulation mode by pressing one of the function keys, or by using the 3D View tool bar buttons, thus:

F2 or

selects Zoom mode

F3 or

selects Pan mode

F5 or

selects Rotate mode


10. Select Rotate mode. Position the cursor in the view area and hold down the middle mouse button, then move the mouse slowly from side to side while watching the effect on the displayed model. The initial direction of movement determines how the view appears to rotate; starting with a left or right movement causes the observer’s eye--point eye--point to move across the view. view. Now release the mouse button, hold it down again and move the mouse away from you and towards you; this time the observer’s eye--point eye--point should sh ould appear to rotate up and down around the model. Repeat the rotation operations while holding down the Control key. Note that the word Fast appears in the status line and that the rate of rotation is increased. Now repeat the same actions, but this time hold down the Shift key. Note that the word Slow appears in the status line and that the rate of rotation is decreased. For an alternative way of rotating the model, try dragging the horizontal and vertical sliders to new positions along the view borders. You can rotate the model in this way at any time, regardless of the current manipulation mode.

11. Select Pan mode. Position the cursor in the view area and hold down the middle mouse button, then move the mouse slowly in different directions. Note that it is the observer’s observer ’s eye--point eye--point which follows the mouse movement (while the viewing direction remains unchanged), so that the displayed model appears to move in the opposite direction to the mouse; in effect, you move the mouse towards that part of the view which you want to see. Repeat the pan operations while holding down first the Control key (to increase the panning speed) and then the Shift key (to decrease the panning speed). 4- 8



12. Select Zoom mode. Position the cursor in the view area and hold down the middle mouse button, then move the mouse slowly up and down. Moving the mouse away from you (up) zooms in, effectively magnifying the view; moving the mouse towards you (down) zooms out, effectively reducing the view. Note that these operatio operations ns work by changing changing the viewing angle (like changing the focal length of a camera lens); they do not change the observer’s eye--point eye--point or the view v iew direction. Repeat the zoom operations while holding down first the Control key and then the Shift key.

13. Position the cursor at the top of one of the corner columns and click (do not hold down) the middle mouse button. Notice how the view changes so that the picked point is now at the centre of the view. Whenever you click the middle button, whatever the current manipulation mode, you reset the centre of interest. Switch to Zoom mode (if not already selected), set the centre of interest to the grille in the front wall, then zoom in for a close--up close--up view of the grille. You You will find f ind this a very useful technique when making small adjustments to the design. 14. To restore the original view when you have finished, check that your current element is /HVACZONE and reselect ISO>Three and Limits>CE .

4.4

Savi Saving ng the the Curr Curren entt De Desig sign n and and Leav Leavin ing g Your our Design Session Even though you have not yet made any changes to the design database, this is a suitable point at which to demonstrate how to store the current design at any stage of a PDMS design session and how to record record your screen screen layout layout so that you can start start your next design session in exactly the same state that you ended the current one.


15. To update the database so as to store the design model in its current configuration, select Design>Save Work from the main HVAC Design Using VANTAGE PDMS Version 11.3

4--9


menu menu bar bar or or clic click k the the butt button on.. (It (It is is wis wise e to to use use this this funct functio ion n periodically as you build up a design, so that you do not have to start from the beginning in the event of loss of work due to an unforeseen interruption, such as a power failure.)

16. To save your current screen layout and display settings, so that next time you use the application you can rapidly restart from where you interrupted your design session, select Display> Save>Forms & Display from the main menu bar. 17. To leave your current PDMS design session and return to the operating system, select Design>Exit from the main menu bar. If you had made any changes since your last Save Work operation, you would be asked if you wanted to save them; in the present situation, you will just be asked to confirm that you want to leave PDMS.

In the next chapter, we will install a simple HVAC ducting network into the building model.

4 - 10


5

Routing a Sequence of HVAC Components

In this chapter we will route an HVAC network between the grilles in the building walls, positioning a selection of HVAC components within the ducting runs. Before we do so, we will expand the earlier information about how the design data is stored and accessed in PDMS.

5.1

HVAC HV AC Comp Compon onen entt Re Repr pres esen enta tati tion on in the the Ca Cata talo logu gue e Each HVAC component is represented in the PDMS catalogue by three types of data: D

The physical shape of the component is defined by a set of geometric primitives.

D

In order that the component can be manipulated and linked to adjacent HVAC items, all principal points needed to define its position, orientation and connectivity are identified by uniquely--numbered uniquely--numbered ‘tags’. These tags, which have both position and direction, are called p--po p--point is identified by p--points ints . Each p--point a number of the format P0, P1, P2 etc., while the principal inlet and outlet points for the logical flow direction through the component are also identified as p--a p--arriv rrive e (PA) and p--l p--leav eave e (PL). P0 always represents the component’s origin position, while P1 is the same as pp --arrive and P2 is the same as p--leave. p--leave.

D

The settings of all variables needed to distinguish a component from others with the same geometry and pp --point sets are defined by parameters . The values of these are defined to suit the specific design requirements.


5--1


For example, a rectangular three--way three--way component (or branch connector) might be represented in the PDMS catalogue as follows:

P2 (P--leave or PL) P L)

P0 (origin)

P3 (branch connection)

P1 (P--arrive -arrive or PA)

where the two curved duct sections form the component’s geometry f our pp --points form its point set (the fourth p--point, p--point, P3, set and the four lets you control the direction of the branch connection arm when you incorporate the component into your design). The dimensions of the component, and other constructional details, are represented in the catalogue by parameters whose values are set to suit the design requirements.

5.2

Restor Rest orin ing g Your our PD PDMS MS Sess Sessio ion n and and Star Starti ting ng the the HVAC Application


18. Restart PDMS and enter the Design Constructor module (as in Step 1), but this time set the Load From button on the CADCENTRE PDMS Login form to User’s Binary . When loading is complete, your screen should look the same as it did when you saved the layout in Step 16. (If you intend to continue from where you finish at the end of any PDMS session, it is always quicker to use the Display> Save> Forms & Display option so that you can reload the binary files in this way, rather than to reload the applications from their source macros each time you use the Design module. You can revert to the most recently saved layout at any time by selecting Display> Restore> Forms & Display .) .) 5--2



19. So far, we have been working in DESIGN’s ‘general’ application mode, where the menus and facilities available are common to all engineering design disciplines. We will now start the HVAC-specific application, which tailors the functionality of the DESIGN module to suit the explicit needs of the HVAC designer. From the General Application menu bar, pick Design>HVAC Designer to load the HVAC application. When loading is complete, the application window will include some extra options, thus:

20. Rather than having to use these menu options for every operation, all of the principal functions for creating, positioning, orientating and connecting HVAC elements are available from within a single form. To display this form, select Create> HVAC. The resulting form, called the Heating, Ventilation, Air Conditioning (HVAC) form (which we will refer to simply as the HVAC form), may be viewed in either of two formats: a brief version or a full version (as shown in the following illustration). The brief version uses drop--down drop--down lists to show the elements available for selection when you are creating a design, whereas the full version uses scrollable lists for this purpose (and also offers some more complex positioning options). The full version is recommended while you are learning to use the application, but you may prefer to use the brief version if your screen is small or of low resolution. To switch between them, select Control>Use Full/Brief Form from the HVAC form’s menu.


5--3


Brief version

Full version

21. To suit user preferences, depending on the level of experience and the type of design work being undertaken, the appearance and behaviour of the forms used for creating and modifying HVAC components can be customised. To do so, select Control> Style Options from the HVAC form’s menu. On the resulting HVAC Form Style form, set all options to On except the OK/Cancel Forms button, like this:

These settings have the following effects:

5--4

D

Show Local Views On will display a small 3D graphical view showing the current component in its design context.

D

Local Views Shade On will show local views in colour--shaded colour--shaded (as opposed to wireline) representation. representation. HVAC Design Using VANTAGE PDMS Version 11.4


D

Show Pixmaps On will automatically display diagrams showing component geometries to help you select items from the catalogue.

D

create/modify odify form Show Forms On will display a create/m automatically when you add a new component to the design, design, so that you can adjust the default default dimensions and/or orientation as required.

D

OK/Cancel Forms Off means that component create/modify forms will have Apply/Dismiss buttons (instead of OK/Cancel buttons), so that they remain available for repeated use until dismissed explicitly.

These settings give you the maximum amount of help as you start to learn about the application. You can change any of them when you wish, as you progress through the exercise.

5.3 5. 3

Sett Settin ing g the the Curr Curren entt De Deta taili iling ng Spec Specif ific icat atio ion n When you select components from the HVAC catalogue, their constructional details are determined by the current detailing specification. This setting is shown, and can be changed, by the drop--down drop--down list immediately below the main menu bar and toolbar. toolbar. When you first display the HVAC form, this specification is set automatically to TUTORIAL, like this:

This specification gives access to a range of catalogue components suitable for use with this exercise. You could, if you wished, select a different specification for each HVAC Branch, but we will use the same specification for the whole of the design exercise.


5--5


5.4 5. 4

Crea Cr eati ting ng Some Some Admin Adminis istr trat ativ ive e El Elem emen ents ts Before Before we can create create the individual individual components components which will make up our HVAC network, we must first create the HVAC and Branch elements which govern their positions in the database hierarchy, as explained in Section 4.1.


22. Check that your current element is the zone, /HVACZONE, below which the HVAC design data is to be stored. From the Categories list on the HVAC form, select PDMS Branches. From the Available Types list, select HVAC System Element. You will see a Create HVAC form. In the HVAC Name text--box, enter HTESTHVAC. Click Apply to create the HVAC element, then Dismiss to remove the form.

23. With the Categories selection still set to PDMS Branches, select Main Branch Element from the Available Types. You will see an HVAC Main Branch Element form. Enter the Branch Name as HTESTB1. The Specification is set automatically to the current detailing specification ( TUTORIAL). Leave this as it is. Set the Branch Head Shape to Rect (rectangular). In the Head Direction text--box, enter N (this will be the direction looking along the ductwork run from the head position towards the first component). Enter Duct width AA (the Arrive A dimension) as 1000 and Duct depth AB (the Arrive B dimension) as 500. Use the Insulation Thickness option button to select 50 mm (this will add 50mm of insulation automatically to each surface of all components and ducting owned by the branch). We will specify the position of the Branch Head by picking a p--point p--point at the centre centre of the hole in the front wall of the building. To do so, use the Head Start drop--down list to select ID Design PPoint and then click Apply . When prompted by the status bar to ’Identify design ppoint’, use the cursor to pick P5 of the 5--6



’negative ’negative box’ represent representing ing the hole in the wall. To find the correct p--point, p--point, zoom in close to the area of interest (see Step 13 if you have forgotten how to do this) and position the cursor on the edge of the box as you press and hold down the left--hand mouse button; the p --points will appear as dots. Move the cursor over the centre of the southernmost face with the mouse button held down. The status bar will show the identity of each p --point as the cursor passes over it; release the button over P5. Dismiss the HVAC Main Branch Element form.

That completes the creation and definition of the first branch within which we will build up a sequence of HVAC components.

NOTE: The distinction between a main branch and a side branch in the PDMS Branches category is simply one of convenience; in PDMS terms they are the same type of element. A main branch requires that you position and orientate its head explicitly, whereas a side branch takes its head position and orientation from a branch connection point (P3) on an existing three--way three--way component (see diagram in Section 5.1). We will use the latter facility later in the exercise.

5.5 5. 5

Crea eatting ing HV HVAC AC Compo mponen nents It is usual to build up your HVAC design by adding components sequentially, starting at the branch head, and positioning and orientat orientating ing each component component as you proceed. proceed. We will follow this method. (For an advance look at the overall configuration which we will be creating in this chapter, chapter, see the diagram on page 55 --16.)


24. The first component we will create is a rectangular straight which we will position outside the building, aligned with the hole in the wall at which we positioned the branch head, like this: HVAC Design Using VANTAGE PDMS Version 11.4

5--7


Straight will be created here It will then be moved to here

N

Branch head is here It will be moved to here

NOTE: The diagrams used throughout this exercise are for illustrative purposes only and are not to scale. Select Rectangular from the Categories list. Because we set Show Pixmaps to On in Step 21, the Available Types list will be supplemented by a palette of diagrams showing what the available options look like. Click on the Straight diagram in the top left--hand left--hand corner of the palette. (If you had chosen not to display the diagrams, you would select Straight from the Rectangular Straight form Available Types list.) You will see a Rectangular which has data fields for all parameters needed to fully define the component. The initial data settings on these component definition forms are determined by a set of default values read from a file, so that you need to enter only a minimum amount of data in most instances. To see what the parameters mean in terms of the component’s geometry, click the Picture button on the form. You will see an HVAC Component form containing a dimensioned and annotated diagram diagram showing how the component component is defined defined in the catalogue; catalogue; compare the data fields on the Rectangular Rectangular Straight form with the diagram (see Appendix C for a full set of these diagrams).We will use the defaults, so select Control>Close to remove the HVAC Component form and then click Apply on the Rectangular Straight form. Dismiss the Rectangular Rectangular Straight form. The rectangular straight will be created and positioned with its PA at 5--8



the branch head, so that it is inside the building (as shown in the above diagram).

25. We must now move the straight to the required position. To do so, we will use the component manipulation features on the HVAC form. Look at the area labelled POSITION on the form. In the text--box text--box next to the Move by button, enter the required displacement; in this case, enter S5000D96. As soon as you press Return to confirm the data, the straight will be moved. 26. To check that the straight is in the correct position, select Query>Position>Origin from the main menu bar. The position will be shown in an HVAC Command Output window. It should read: E 3048 3048 mm mm S 5125 5125 mm mm U 3300 3300 mm mm . 27. We will now reposition the branch head so that it coincides with the PA of the straight. To do this, look at the area labelled drop--down lists in the CONNECT on the HVAC form. Set the drop--down bottom row to read HVAC Branch Head to First Member. This connects (and therefore repositions) the head of the current branch to the PA of the first component in its members list, which is the straight (this is, of course, the only branch member so far). NOTE: We could have positioned the branch head here when we first created it (in Step 23), but this would have required us to calculate its coordinates explicitly. It is usually easiest, as here, to position a new item relative to an existing design point and then to move it later. 28. The last operation will have made the branch (more precisely, the branch head) the current element. Each new component is created immediately after the current component in branch list order, so before we create the second component in the branch, navigate to the straight by clicking on it in either the Members List or the 3D View. View. We will now position a fire damper where the ducting will pass through the wall. Select Inline Plant Equipment from the Categories list and then select Rectangular Fire Damper from the displayed types. On the Rectangular Rectangular Fire Damper form, name the component as required (say, FD1) and leave all parameter settings at their default values (click the Picture button to see their relevance). Notice that the local view at the HVAC Design Using VANTAGE PDMS Version 11.4

5--9


right--hand side of the Rectangular Rectangular Fire Damper form shows the existing straight (remember, we set Show Local Views to On in Step 21). Click Click Apply to create the fire damper.

29. When first created, the fire damper is positioned so that its PA is coincident with the PL of the preceding straight. We will now move it so that it fits within the wall.

Fire damper moved to here N

Fire damper created here

In the POSITION area of the HVAC form, set the Through option button to ID Element. When prompted to identify an element, element, pick any part of the southernmost southernmost wall. The fire damper will be moved forward along its axis (i.e. towards the North) until it lies in the plane of the wall. (You will not now be able to see the fire damper in the 3D View, View, since it will be hidden within the negative box which represents the hole through the wall.) Notice how the gap between the straight and the fire damper is filled automatically by a length of implied ducting in the 3D View (implied ducting is not shown as an element in the Members List). List). We will see how to replace implied ducting with catalogue straights in a later stage of the exercise.

30. Change the 3D View direction to Look>Plan North, so that you see a view similar to that illustrated in the preceding diagrams. 31. Create a Rectangular Square Bend with all default settings except the Leave Direction. Set the latter to W , so that the bend orientation is as follows:

5--10



PL of bend N

Note: Implied ducting shown by lighter shading than the HVAC components in all diagrams

OK the warning message; its significance will be explained in Section 5.6. Notice that the Members List now shows two new elements, one representing the bend ducting, the other representing the set of air deflectors within it (since it is a square bend requiring turning vanes; SPLR = Splitter). To see the deflectors inside the bend, switch the 3D View temporarily to wireline mode (use the pop--up menu, or Settings> Shaded option on the 3D View pop--up press F8, to toggle between colour--shaded colour--shaded and wireline views). v iews).

5.6

How How PD PDMS MS Re Repr pres esen ents ts Comp Compos osit ite e Comp Compon onen ents ts It is important at this stage that you understand the concept of having more than one PDMS element to represent a single HVAC component, since this means that you must be particularly careful that you are at the correct position in the branch members list when you want to refer to such a component. (You saw a message warning you of this when you created the square bend containing the deflectors.) If you navigate to the square bend simply by picking it with the cursor, your current element will most likely be the outer ducting. The ‘subcomponent’ which completes the item’s representation, namely the deflector set, comes after the bend in the branch members list. You must therefore navigate to the element representing the deflectors before you create another component which is to follow the bend in the branch order.


5--11


Branch Members: ... previous component bend ducting ducting (BEND) (BEND) deflector deflector set set (SPLR) (SPLR) next component ...

PL

PA

(We will see further examples of composite components and subcompon subcomponents ents when we add stiffening flanges and access access panels to our HVAC ductwork in the next chapter.)

5.7 5. 7

Crea Cr eati ting ng HV HVAC AC Comp Compon onen ents ts (Con (Conti tinu nued ed))


32. With the square bend’s deflector set as your current element, create a Rectangular Radiused Bend. Set its Inside Radius to 100 and check that its Leave Direction is N. Position the new bend in the plane of the westernmost wall by using POSITION Through ID Element on the HVAC form and picking either the wall or, if still using a plan view, the beam above it. Now move the bend to fit just inside the wall, and downwards so that the ducting leaving it will pass under the beam across the building roof, by using POSITION Move by E800D150 . The result should be:

Duct to pass under beam

N

Broken line here shows components are misaligned

5--12



33. Since we have moved the radiused bend downwards, its inlet (PA) is not vertically aligned with the outlet (PL) of the preceding component. This is indicated in the 3D View by a broken line between the components (rather than implied ducting). To compensate for this, we will now insert a mitred offset section between the two components. Remember that the new component will always be added immediately after the current element, so navigate back to the previous bend (or, more accurately, the deflector set of the square bend). Then create a Rectangular Mitred Offset. In order to calculate the length and correct amount of offset needed to fit the new component into its available space, we will use a very powerful facility which does this automatically. Simply click the Fit button on the Rectangular Rectangular Mitred Offset form. The calculated data will be entered into the parameter data fields: note, for example, example, that the A Offset is now set to 150. When you have completed the creation, zoom in close to the mitred offset and view it from different angles to see how it has been adjusted to fit between the two bends.

34. Navigate to the last component in the branch (the radiused bend). Create Create a second second radiused radiused bend with the default default Inside Radius (0.5 means 0.5 x duct width) and with its Leave Direction East, in the following position: New bend here

(this beam will be used as a reference in Step 35)

N


5--13


First position the bend in the plane of the northernmost wall (using Through ID Element and then picking the wall or beam above it); then move it South by 1500 mm (using Move by S1500).

35. The next item which we want to add is a circular section silencer, but in order to fit this, we must first fi rst insert a square --to-to --round transformation piece. From the Categories list select Transformations, then from the Available Types select Square to Round. Enter the Duct Diameter as 750. Position the transformation piece in line with the first beam reached in the branch--creation branch--creation direction, shown striped in the preceding diagram, then move it a further 300 mm East. Now select the Inline Plant Equipment component category and create a Circular Silencer. Name the item SILE1 and set the Outer Diameter to 950.

36. We will now add another transformation piece to revert back to rectangular ducting. Instead of specifying this from first principles, we will create a copy of the existing transformation piece and reverse it to achieve the desired round--to--square result. On the HVAC form, click the Create Copy ID button. When prompted, pick the square--to--round transformation which you want to copy. On the Square to Round Transformation form, set the Flip Circ/Rect option to Yes; this interchanges the PA and PL points so as to reverse the component’s direction. When you complete the creation operation, the HVAC layout should look like this:

5--14



Square to round

Circular Round to square silencer

N

37. The next item to be added will be a threeway component, so that we can connect another branch into our existing branch later in the exercise. From the Rectangular category, create a Square Threeway with both the Duct Width LA (leave A dimension) and Second Width (for the branch connection) set to 800 and with the Leave Direction set to S. Move the threeway component component along the branch branch axis to achieve achieve a gap between it and the preceding component (the round--to-square transformation) of 1500 mm. To do so, enter 1500 in the text--box next to the Distance button on the HVAC form. (Note that this operation lets you specify the required result, namely the gap between the PL of one component and the PA of the next, rather than having to calculate the movement required to achieve it.) To check that the gap is correct, navigate back to the round--to round--to---square transformation transformation and select Query>Gap to next from the main menu bar.

38. Return to the square threeway component and create a Rectangular Radiused Bend with default dimensions and with its Leave Direction set to East. Align the bend with the hole in the easternmost wall by using the Through ID Element option. Note that the current branch direction (i.e. the PL direction of the previous component) was changed to South by the threeway item, so the bend will move South until it is aligned with the picked element. HVAC Design Using VANTAGE PDMS Version 11.4

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39. Create a Rectangular Fire Damper (like the one we created and positioned in Steps 28 and 29), name it FD2, and position it through the hole in the easternmost wall. 40. Finally, to complete the branch definition, connect the Branch Tail to the fire damper (i.e. to the Last Member of the branch). (This uses the same method that we used to connect the branch head in Step 27.) The final HVAC configuration should be as follows: square to round

radiused bend

round to square

unconnected P3 ready to attach a side branch threeway connector

1500

circular silencer

Branch tail radiused bend

vertical offset

radiused bend

fire damper

N

fire damper

square bend (inc. deflector vanes) straight Branch head

changes. 41. Save your design changes.

That completes the creation of our main branch. In the next chapter, we will add some side branches and demonstrate a convenient utility for representing ceiling tiles which incorporate ventilation grilles. We will also replace all of the implied ducting with appropriate standard straights. 5--16


6

Adding to the HVAC Model

In the preceding chapter we created a sequence of HVAC components to form our main branch. In this chapter we will extend this model by adding some side branches. We will begin by using some facilities for setting out a working grid and positioning ceiling tiles within it, so that we can then use these tiles as references for positioning HVAC grilles.

6.1 6. 1

The The Grid/T id/Til ilin ing g Utili tilitty With reference to our existing design model, the next part of the HVAC ducting network which we are going to design will feed two ceiling ceiling grilles above the small room in the northeast northeast corner of the building. In order to position these grilles, we will use a facility which lets you set out a horizontal grid and a ceiling tile layout based on a specified datum point. The grid/tiling utility is used in three stages:

1)

Specify a settingsetting --out out point (S.O.P.) to represent the datum from which grid line positions are to be calculated.

2)

Create grid lines at specified intervals, referenced from the S.O.P., in a horizontal plane.

3)

Add tiles at specified positions in the plane of the grid.


42. If your screen is getting too full, you can temporarily close the HVAC form (Control>Close from its menu bar), since we will not need to use it for the next few steps in the exercise. Navigate to the zone which owns the design model, namely /HVACZONE. The grid/tiles will be created below this hierarchic level. HVAC Design Using VANTAGE PDMS Version 11.4

6--1


43. From the main menu bar, select Utilities>HVAC Tiles/Grid Layout>Setting Out Point. You will see an HVAC Grid Setting Out Point form. Enter the S.O.P. Name as HTESTSOP1 and enter the Setting Out Point Height as 2700 (which is the elevation of the ceiling in which we will eventually eventually position position the grilles). grilles). Click OK on the HVAC Grid Setting Out Point form. You will be prompted to pick the S.O.P. position using the cursor in a plan view. We actually want to position the S.O.P. at the centre of the room’s ceiling, which has the coordinates E15000 N9000 U2700 . Rather than trying to pick this point precisely, pick any point in the ceiling plane to create the S.O.P., then move it to the exact position required. To do the latter, select Position>Explicitly (AT) from the main menu and enter the coordinates on the Explicit Position Position form (ignore the Positioning Control form). The S.O.P. is represented by a DISH element in the PDMS hierarchy; it will appear in the 3D View as a small sphere.

44. We will next define a horizontal reference grid through the S.O.P. datum point (i.e. a grid in the plane of the ceiling), with the grid lines spaced out from the S.O.P. in both directions. Select Utilities>HVAC Utilities>HVAC Tiles/Grid Layout>Grid from S.O.P. S.O.P. You will see an HVAC Layout Grid from SOP form. Leave the East/West and North/South Grid Spacing separations set to the default of 600. Click OK. You might be prompted to identify the S.O.P. from which the grid line positions will be calculated (unless it is already the current element): if so, pick the S.O.P. which you have just created. You must now define the horizontal rectangular area which represents the grid boundaries. You will be prompted to pick first the South Sou th---West Wes t corner and then the NorthNor th--Ea -East st corner in a plan view. Pick the corresponding corners of the room (i.e. the intersections of the beams at these corners). Since our room is 6000 x 6000 mm, the 600 mm grid line spacing will give us 10 grid squares in each direction within the ceiling area, like this: 6--2



Pick NE corner second = S.O.P.

= Tiles to be added

N

Pick SW corner first

NOTE: If the room were not rectangular, you could build up an overall grid by using abutting rectangles based on separate setting--out points. 45. To complete this part of the exercise, we will create two tiles in the ceiling grid where we want to install HVAC grilles (as shown by the shaded and striped grid squares in the preceding diagram). Select Utilities>HVAC Tiles/Grid Layout>Apply Tiles in Grid. You will see an HVAC Apply Tiles in Grid form. Leave the East/West and North/South Tile Width dimensions set to the default of 600. (They do not have to be the same size as the grid squares, but will usually be so in practice.) Click OK. You might be prompted to identify the S.O.P. whose grid will be used to position the tiles. Even though there is only one, pick the S.O.P. to confirm your intentions. You will now be prompted to identify the locations at which you want want to inse insert rt tile tiles. s. Pick Pick the grid grid squa square ress mark marked ed and and in the preceding diagram (the picked points snap to the nearest half tile, so you don’t need to be too precise). Then press the Escape key to indicate that you have finished adding tiles.


6--3


6.2 6. 2

Crea Cr eatting Some Some Si Side de Br Bran anch ches es We next want to create a side branch which runs from a take--off We take--off point on the main branch and which passes between the tile positions. We will then add two more side branches running from points on the first side branch to the tile positions (remember that you need a separate branch for each length of ducting between two points). We will complete the network by adding a fourth side branch, leading to an angled outlet mesh, from the unconnected arm of the square threeway component. Before we can create our first side branch, we must insert a suitable connector into the main branch so that we have a point to which we can connect the side branch head.


46. Navigate to the existing threeway item. We will insert another branch connector immediately after it in the branch sequence. Redisplay the HVAC form (Create>HVAC) if you dismissed it earlier and, from the Branch Connectors category, create a Flat Oval ‘A’ Boot component. Set the Boot Width to 610, the Boot Depth to 152, the B Offset to 100, and the Boot Direction to E. We want the oval ducting to pass along the centreline of the ceiling, so position the current component so that its outlet is aligned with the S.O.P. datum at the ceiling’s centre (using the facility on the HVAC form), thus: Through ID Element facility

6--4



P3

Boot connector with flat oval side outlet

P3

P3 of boot connector aligned with S.O.P.

N

47. From the PDMS Branches category, create a Side Branch (off main). Enter the Branch Name as HTESTB1.1 (showing that it is a side branch of main branch HTESTB1) and set its Insulation Thickness to 50 mm. Leave the Specification option button set to the current default; that is, to the same specification as the main branch. Since you are creating a side branch, it is assumed that you will connect its head to a free P3 point on an existing component. Set the Connect Head to option button to Branch Connector to show the type of component to which this connection will be made. Click Apply . When prompted, pick the flat oval boot connector. (Note that you can pick any part of the component; the new branch head will always be connected to its P3 point.)

48. As the first member of the new side branch, create a Flat Oval Straight with its Width Direction set to N. 49. We are now going to create two circular boot connectors from which to route outlets to the two tile positions. We are going to create these and position them before we create the straight to which they will be connected, so that the boots can be positioned relative to the tiles and the length of the straight can then be adjusted to suit the boot positions. HVAC Design Using VANTAGE PDMS Version 11.4

6--5


With the oval straight as the current element, create a Circular Boot from the Branch Connectors category. Set the Boot Diameter to 150 and the Inner Extension to 76. Set Distance from Leave to 100 and leave Boot Direction as N. This boot will be positioned 100 mm back from the PL of the straight on which it will be mounted (which is only implied at this stage). Now move the boot so that it is aligned through the nort northe hern rnmo most st tile tile (sho (shown wn as in the the diag diagra rams ms). ). Create a second Circular Boot with Boot Diameter 150 and Inner Extension 76, but this time set Distance from Leave to 700 and Boot Direction to S. This Distance from Leave dimension positions the boot 700 mm back from the PL of the previous boot. Since the previous boot was set back 100 mm from its PL, the difference between the boot positions corresponds to the 600 mm offset between the two tile positions. The result is as follows: tile 100

main branch

straight

first circular boot

side branch oval boot

PLs of both circular boots are here

second circular boot 700

N

tile

50. We will now replace the implied ducting between the circular boots with a straight component. Because the boots are subcompone subcomponents, nts, as defined defined in Section Section 5.6, you must first navigate back two positions in the Members List to the existing straight in this side branch. Now create a second Flat Oval Straight and use the Fit button to achieve the required length between the PL of the first straight and the PLs of the circular boots. (The calculated Length should be shown as 2525.) 51. To complete this first side branch, we will add a cap to close the end of the last straight. Navigate to the last component in the 6--6



Members List (i.e. the southernmost circular boot) and create a Flat Oval Cap End. (Remember that the PL of this boot is as shown in the preceding diagram, not within the boot volume itself, itself, so that the cap should be positioned positioned correct correctly ly and will appear in the correct list order.) Finally, connect the Branch Tail to the Last Member of the branch (i.e. the cap).

52. Our second side branch will run from the northermost circular boot to a grille in the adjacent tile. Navigate to the first side branch (/HTESTB1.1) and create a new side branch named HTESTB1.1.1 with 50 mm insulation thickness. Connect the head of the new side branch to the circular boot connector. 53. Create a Circular Straight with Length set to 750. To see what types of leave joint are available, click the Choose button next to the Leajoint field. From the resulting Choose Joint form, select Male Socket & Spigot Joint and click OK. The Leajoint field will be updated to show MALE. 54. Create a Circular Internal Damper with default settings. 55. Create a Circular Flexible Bend with its Leave Direction set to D (down). Position the bend so that it is aligned through the appropria appropriate te tile. (We (We will come back to this bend and adjust its dimensions to fit later.) 56. From the Transformations category, create a Circular to Rectangular Spigot Box. Set the following parameters: Duct Width LA = 300; Duct Depth LB = 300; Rectangular Box Height = 75; Circular Extension = 50; Circular Joint = MALE. 57. From the Inline Plant Equipment category, create a parameters ers as follows: follows: Rectangular Grille In Line. Set the paramet Name = GRIL1; End Width = 400; End Depth = 400; Grille Length = 50; ‘A’ Extension = 0. We want the grille to fit within the tile volume, so set the Position At option button on the HVAC form to ID Element and, when prompted, pick the tile. The origin of the grille will be positioned positioned at the origin of the tile. (At this stage the PL of the spigot box and the PA of the grille will have become misaligned, so you will see a broken line between them rather than a length of implied ducting.) HVAC Design Using VANTAGE PDMS Version 11.4

6--7


58. Having positioned the grille correctly, we will now go back along the current side branch and adjust the other components to fit. First, position the spigot box directly on top of the grille. To do so, navigate to the spigot box (PLEN = Plenum in the Members List) List) and select Position At Next from the HVAC form’s positioning options. Now adjust the dimensions of the flexible bend so that it fits correctly between the internal damper (at its PA) and the spigot box (at its PL). To do so, navigate to the flexible bend and click the Modify CE button on the HVAC form. This will will redispla redisplay y the Circular Flexible Bend form, but note that the option button at the top of the form is now set to Modify rather than Create. Click the Fit button on this form to recalculate the dimensions necessary for a correct fit. (The calculated Arrive Extension should be set to 120 and the Leave Extension to 225.)

59. Complete the definition of the side branch by connecting its tail to the grille. grille. The side branch branch /HTESTB1.1.1 /HTESTB1.1.1 should now look like this (looking towards the West): Head

cross--sec cross--section tion of oval side branch /HTESTB1.1

flexible bend

circular straight circular boot connector

spigot box

fire damper inside straight

grille

Tail

60. Repeat the sequence described in Steps 52 to 59 to create a similar side branch, named /HTESTB1.1.2, from the second circular boot to a grille (/GRIL2) positioned in the other tile. (Remember to navigate up to the level of branch /HTESTB1.1 first.) The overall layout of the HVAC ducting in the vicinity of the room should now look like this (note that the different shades here show the branch hierarchy, not the distinction between catalogue components and implied ducting as in the other diagrams): 6--8



fourth side branch will go here

side branch / HTESTB1.1

side branch /HTESTB1.1.1

main branch /HTESTB.1

side branch /HTESTB1.1.2

N

61. We will now complete the network by connecting an angled outlet grille to the side arm of the square threeway component (top--left (top--left in the preceding diagram). To To do so, we must create a fourth side branch. Navigate to the threeway item. Create a side branch named /HTESTB1.2 with insulation thickness 50mm. Set the Connect Head to option button on the HVAC Side Branch form to Threeway Item and, when prompted, pick the threeway component.

62. Create a Rectangular Radiused Bend. Because we want the bend to turn in the ‘B’ direction (click the Picture button for clarification), click the Transpose width/depth button. The Duct Width AA should now be 500 and the Duct Depth AB should be 800. Set the Angle to 135, the Inside Radius to 100, and the Leave Direction to D. 63. Create a Rectangular Radiused Splitter which will fit inside the bend (i.e. it is a subsub --component -component of the bend). Set the usin g a colour--shaded colour--shaded view, view, Splitter Radius to 200. If you are using switch to wireline mode ( Graphics>Shaded or F8 key) to see the splitter. settings, to 64. Create a Rectangular Mesh End, using default settings, complete the branch. Connect the branch tail to the last member in the usual way. HVAC Design Using VANTAGE PDMS Version 11.4

6--9


This side branch branch will now have the following following configuration configuration (looking towards the East): 135 radiused bend

square threeway

radiused splitter

main branch

Head Tail mesh end

65. Finally, to complete the network, we will insert two sets of air turning vanes into the square threeway component to control the air flows (similar to those which we saw in the square bend in Step 31). Navigate to the square threeway component and switch to wireline view (if not already set) so that you can see what happens next. Create the first set of Rectangular Turning Vanes. Change the Duct Width AA to 500 and leave the other settings at their defaults. Note in particular that the Leave Throat is 150 and that the Direction towards leave radio button is selected. Now create a second set of Rectangular Turning Vanes. This time set the Duct Width AA to 500, the Leave Throat to 650 and select the Direction opposite leave radio button. The result, and the significance of the settings used, are illustrated in the following diagram: P3 of threeway

Direction opposite leave (second set) PA of threeway Direction towards leave (first set)

650 from leave throat

150 from leave throat PL of threeway PA and PL of both deflectors

6--10



That completes the conceptual design of the basic HVAC network. In the next chapter we will look at some ways in which we can enhance this design further.


6--11

13

Completing the the Design

In this chapter we will look at some facilities for enhancing the basic HVAC design model. The main features described are:

13.1 13 .1

D

Automatic replacement of implied ducting in gaps by catalogue straights.

D

Automati Automaticc addition addition of stiffening stiffening flanges to ductwork ductwork items.

D

Automatic item numbering of HVAC components.

Filli Filling ng Duct Ductwo work rk Gaps Gaps Auto Automa mati tica cally lly When we created the main branch, /HTESTB.1, we concentrated on specifying components with specific functions, such as bends, side connection points, silencers and dampers. Most of the gaps between these these component componentss were left undefined and were filled by lengths lengths of implied ducting to complete the representation shown in the 3D View. View. To enable the design to be prefabricated, it is necessary to specify the fixed lengths of ductwork (i.e. ductwork straights) required between these components, so that a full material take--off take--off list can be generated. The application includes a powerful facility which can calculate the optimum combination of standard and non--standard straights needed to fill each gap and then create the corresponding components in the design database automatically.


131. Navigate to the main branch /HTESTB1. We will first identify what gaps exist in the branch. To do so, select Utilities>Autofill with Straights>Show Gaps from the main menu. You will see a Highlight Implied Ductwork Ductwork form showing the name of the current branch at the top. HVAC Design Using VANTAGE PDMS Version 11.4

7--1

Completing the Design

Click Apply . The scrollable list area of the form will show the location (i.e. the preceding component) and length of each gap, and the calculated combination of straights needed to fill it. At the same time, all corresponding lengths of implied ducting will be highlighted in the 3D View. The list for /HTESTB.1 /HTESTB.1 should show seven gaps, thus:

Compare the list with the highlighted items in the 3D View.

132. We will now fill each gap with the calculated combination of straights. Still at /HTESTB1, select Utilities>Autofill with Straights>Fill Gaps. You will see a very similar form to the previous one, this time called Autofill with Straights. Straights. Click Apply . Once again you will see a list of all identified gaps, as in the preceding diagram, but this time the specified straight lengths will be created automatically to replace the implied ducting. Check the Members List to see the new elements. 7--2



133. To check that the autofilling operation was carried out correctly, repeat Step 131. You should now see the message No Gaps To Show . Do not dismiss the form yet. Now check that there are no gaps in any of the four side branches. To do so, navigate to each in turn, click the CE button at the top of the Highlight Implied Ductwork Ductwork form, then click the Apply button. In each case you should see the No Gaps To Show message. (If not, go back and correct any errors in your design before proceeding.)

13.2 13 .2

Addi Adding ng Stif Stiffe feni ning ng Flan Flange ges s A utility is provided for calculating the optimum numbers and positions of stiffening flanges needed to support ductwork items. The configuration of the flanges is tailored to suit the component geometry in each case. You can then create and position such flanges automatically.


134. Navigate to first straight in the main branch (i.e. the southernmost straight). To calculate the number of stiffeners needed needed for this length length of ducting, ducting, select the Rectangular category on the HVAC form and create Stiffening . You will see a Rectangular Rectangular Stiffening form showing the calculated requirements for the current element. Note in particular the number number of stiffening stiffening flanges required required ( Spec Requirement Requirement): in this case 5. To create all of the stiffening flanges as specified on the form, click the Apply the Spec Requirement button. The five flanges will be created and positioned automatically. Note that, in the branch membership hierarchy, they are treated as subcomponents of the straight (as explained in Section 5.6).

135. Repeat the preceding process to stiffen the next straight which, being shorter, requires only four flanges. 136. Now, proceeding along the branch, add stiffeners to the square bend, the mitred offset, and the radiused bend. Notice how the HVAC Design Using VANTAGE PDMS Version 11.4

7--3


stiffening flanges are configured to suit the different component shapes, like this (different shading identifies individual components; heaviest lines show flanges joining components together): mitred vertical offset (1 stiffener) square bend (4 stiffeners) radiused bend (2 stiffeners) fire damper second straight (4 stiffeners)

first straight (5 stiffeners)

13.3 13 .3

N

Auto Automa mati tic c Item Item Numb Number erin ing g and and Na Namin ming g The item numbering facility automatically allocates sequential item numbers to all HVAC components and gives each item a name of the format / PREFIXnumber, PREFIXnumber, where /PREFIX is a user--definable string and number is the allocated number. Subcomponents (air deflectors, stiffening flanges etc.) are numbered as decimalised subsets of their ‘owning’ components. Inline plant items, which will usually already be named, do not have their names changed.


137. We will autonumber all HVAC items in our current design model, so navigate to the owning HVAC element /HTESTHVAC and select Utilities>Automatic Utilities>Automatic Itemising from the main menu. You will see an HV HVAC AC Itemising form. 7--4



Enter the Naming Prefix as /HTEST/ITEM and leave the Start Number Number set to 1. When you click Apply you will see an HVAC Command Output window listing all HVAC items and their allocated numbers. Compare the entries in this itemising list with those in the Members List. List. You will see that each item (except any inline component) is named in the Members List using the specified prefix /HTEST/ITEM suffixed by the item number. For example, the first two straights in the main branch, and their stiffening flange subcomponents, appear as follows (the numbers like =15312/112 etc. are internal database reference numbers, which you can ignore): ignore):


7--5


13.4 13 .4

Fini Finish shin ing g Off Off Some Some De Desi sign gn De Deta tail ils s We will now complete some design details which we could not do earlier because they involve the ductwork straights which we have only recently created to replace the implied ducting. First we will modify some joint types to suit the final design, then we will insert an access panel into the side of a length of ducting.


138. When the lengths of implied ducting leading to the two fire dampers were replaced with straight components, the connecting joints will have been assumed to remain as default flanged joints. In fact, the fire dampers require raw edge joints, such that the ducting simply fits over the damper inlet and outlet. outlet. To modify the inlet joint for either damper (i.e. the leave joint for the straight), navigate to the preceding straight and click the Modify CE button on the HVAC form. On the resulting Rectangular Rectangular Straight form (in Modify mode), click the Leajoint Choose Joint form, select Raw Choose button and, from the Choose Edge Joint, Joint, slip over over 40mm 40mm. The leave joint field will now be set to RE40. Apply the change. Repeat this for the inlet to the other damper. To modify the outlet joint between the first damper and the square bend (i.e. the arrive joint of the bend), navigate to the lar Square bend and click Modify CE. On the resulting Rectangu resulting Rectangular Bend form, click the Arrjoint Prev button. The arrive joint field will be set to RE40 by automatic reference to the previous component, namely the fire damper. Apply the change.

139. We will now insert an access panel, whose catalogue definition includes a predefined working volume, into the side of the last straight. (The reason for doing this will become clear when we look at clash checking in the next chapter.) Navigate to the appropriate straight (the short one, named HTEST/ITEM21 by the itemising utility, connected to fire damper FD2). Create a Rectangular Access Panel. From the Select Size options, options, which show all panel sizes available in the catalogue, catalogue, 7--6



select 400x350; then click the first Transpose width/depth button to give the required configuration (i.e. 350 W x 450 H). When created, the panel appears in the 3D View as a rectangular plate standing slightly proud of the ducting surface. In the next section we will look at its ‘hidden’ geometry in more detail. Run the automatic itemising utility again so that the access panel is included in the item list.

13.5 13 .5

Chan Changi ging ng the the Vi View ew Re Repr pres esen enta tati tion on We have already seen how to control which design elements appear in the 3D View by using the Drawlist to add or remove items as required. We have also seen how to control the viewable volume and the viewing direction direction by using the Limits and Look options from the 3D View’s View’s pop--up pop--up menu. We will now see how you can further f urther refine the view by specifying different levels of detail for the items being displayed.


140. The amount of detail shown in the 3D View for different types of component is controlled by the current representation settings. To see what these settings are, select Settings>Graphics> Representation from the main menu. You will see a Representation form. We will look at just two of its options here. The geometric representation of a catalogue component can include, in addition to its normal physical shape, an obstruction volume which represents the space around the component needed for maintenance or operational access. The access panel created in Step 139 is an example of such an item. To see what the obstruction volume looks like, set the Obstruction option to Solid on the Representation form and the Update all Graphics button to On: click Apply . HVAC Design Using VANTAGE PDMS Version 11.4

7--7


Zoom in close to the access panel and see how its appearance has changed. changed. The effect, effect, exaggerat exaggerated ed here for emphasis, emphasis, is as follows: access panel

obstruction volume

To reset the normal view, redisplay the Representation form and set Obstruction to Off , leave Update all Graphics set to On, and click OK.

141. The holes through the walls, where the fire dampers are situated, situated, may be shown either as boxes (specially (specially shaded to show that they represent negative boxes, i.e. holes) or as true holes. So far we have used the shaded box representation so that we could pick the holes graphically to identify them. To switch to a more realistic representation, set the Holes Drawn button to On, leave Update all Graphics set to On, and click Apply . Look carefully at each hole in turn. You will now be able to see the ducting and fire dampers where they penetrate the walls.

That completes the introduction to the basic HVAC routing operations. In the following parts of the exercise we will look at some ways of checking checking the design model and outputti outputting ng some design data derived from the database settings.

7--8


8

Checking and Outp Outpu utti tting Design Data To ensure maximum design integrity, the HVAC application lets you check the data in several ways so that any potential mistakes are drawn to your attention. In this chapter we will look at the methods of checking for errors and inconsistencies in the HVAC layout, and for clashes (spatial interferences) between design elements. We will then look at two ways of outputting design data derived from the HVAC model: the generation of a tabulated report showing the material required to build the design, and the creation of a plot showing the HVAC layout.

NOTE: Most of the facilities used here are available from all design applications, so you can readily check and output data from any combination of design disciplines.

8.1 8. 1

Que Query ryin ing g Some Some Data ata Set Setting ings First, we will look at some ways in which you can query specific data settings as you build up the design model, so that you can check detailed design points at any stage.


77. Navigate to the square threeway component and then select Query> Item Details> Brief Description from the main menu. You will see a summary showing the component’s type, key dimensions and joint specifications, like this:


8--1

Checking and Outputting Design Data

Repeat this operation for some other components (and subcomponents).

78. Navigate to the first (i.e. southernmost) straight and select Query>Item Details>Item Number Number. The resulting output, which will say Item Number 1 , will be appended to the output from the previous query. Compare the result with the data illustrated at the end of Section 13.3. 79. At any component, select Query>Item Details>Insulation Depth. The resulting output should always say Insulation 50 mm, since we specified this insulation thickness when we created each branch. following Query options for several different types of 80. Use the following component:

Query>Position>Origin Query>Position>Position Query>Position>Position PA Query>Position>Position Query>Position>Position PL Compare the results with the catalogue definitions for the corresponding components, as illustrated in Appendix C.

8.2

Chec Checki king ng for for De Desi sign gn Da Data ta Incon Inconsi sist sten enci cies es The data consistency checking utility reports the following types of occurrence (and other similar errors) in the design:

8--2

D

Branch head or tail reference not set

D

Branch head or tail reference type not valid

D

Adjoining components have incorrectly ordered PA and PL points; for example, one component may have been flipped while its neighbour was not

D

Distance between a component and a connected neighbour, or between a component and the branch head or tail, is not valid

D

Neighbouring connected components, or a component and the branch head or tail, have their PA/PL misaligned

D

Arrive or leave joint has wrong connection type HVAC Design Using VANTAGE PDMS Version 11.4



81. To check your design for data consistency errors, select Consistency Utilities> Data Consistency . You will see a Data Consistency Check form. form. We will use the default settings settings for all data checking checking operations. You can send the error report either to your screen or to a file. We will view it on screen, so select the Output: Terminal button. The Check: list lets you specify how much of the design model you want to check in a single operation. We will check each branch separately, so select Branch from the list. Navigate Navigate to any component component in the main branch branch /HTESTB1 /HTESTB1 and click Apply to initiate the data checking process. The resulting diagnoses will be shown in the scrollable text area at the bottom of the form, like this:


8--3


(These two messages remind you that the head and tail of the branch have not been explicitly terminated and are not connected to any external items. Each branch end would normally be connected to, say, an air handling unit or to some other other ductwork ductwork in an adjacent adjacent design zone.) Repeat the check for each of the side branches in turn (for the purposes of this exercise, ignore any messages which you receive as a result).

It is good practice to run a data consistency check whenever you have created or modified any significant amount of the design, typically before you do a Savework operation.

8.3

Checking for Cla las shes The types of clash identified depend on two factors: D

The obstruction levels of the clashing elements

D

The current touch and clearance tolerances

Obstruction Levels

All design primitives and all catalogue primitives have an obstruction attribute (OBST) which defines the physical type of obstruction which the primitive represents: D

A hard obstruction (OBST=2) represents a rigid and impenetrable object, such as a steel beam or a plant vessel.

D

A soft obstruction (OBST=1) (OBST=1) represent representss a volume volume which is not solid but which needs to be kept clear for access.

D

Any primitive with OBST=0 represents a freely accessible volume volume and is ignored ignored for clash checking purposes. purposes.

Extent Extent Of Clashing Clashing

As well as distinguish distinguishing ing between hard and soft clashing items, items, the checking utility recognises three categories of clash between them, depending on how far the two primitives intrude on each other’s allocated space. These categories are: 8--4



D

A physical clash: the primitive volumes overlap by more than a specified amount. This usually means that a definite interference exists.

D

A touch: the primitives either overlap by less than the amount needed to cause a clash or are separated at their closest point by less than a specified distance. This may simply mean that one item is resting upon another as intended, or it may indicate a problem.

D

A clearance: the primitives are separated at their closest point by more than the amount necessary to constitute a touch but less than a specified clearance distance. This represents a ‘near miss’, which you may want to investigate.

These three classes are illustrated below for the clash specifications: Touc ouch lim limits: its:

5mm 5mm over overla lap p to 2mm 2mm gap gap

Clearance limit:

8mm

so that the following criteria apply: D

If the items overlap by more than 5mm, a clash is reported

D

If the items overlap by less than 5mm, a touch is reported

D

If the items do not overlap but are separated by less than 2mm, a touch is reported

D

If the items are separated by more than 2mm but less than 8mm, a clearance is reported

D

If the items are separated by more than 8mm, no interference is found

overlap > 5mm

overlap < 5mm

A Physical Clash

gap < 2mm

Touches

2mm < gap < 8mm A Clearance

The Clash Detection Process

Each element which is to be checked for clashes has its own geometry checked against that of all other elements which are specified by a HVAC Design Using VANTAGE PDMS Version 11.4

8--5


current obstruction list. Items which are not in the obstruction list are ignored ignored during the clash checking operations. operations. By default, default, the obstruction list includes all elements in the database, so that each element to be clash checked is tested against every other element. element. To control the amount of checking carried out in a large database, you can restrict the obstruction list to a few specific elements and/or you can specify a 3D volume (the clash limits) within which the clash checking is to be confined. To highlight the locations where clashes are found, the clashing and obstruction items are shown in contrasting colours in the graphical view (two shades of red, by default). Exercise Exercise continues:

82. We will use the default values for all clash checking settings. To see what these are, select Settings>Clasher>Defaults to display the Clash Defaults form. Think about the meaning of each setting shown (refer to the preceding introduction); then Cancel the form. 83. We will check all of our HVAC components for clashes against the building structure. The default obstruction list ( all elements in the current design database) will include both structural and HVAC items. To edit this, select Settings>Clasher>Obst Settings>Clasher>Obstruction> ruction> List. You will see an Add/Remove Obstruction Items form which is used in a similar way to the Drawlist form (as introduced in Step 8). Remove all current entries and then Add the structural design data only (i.e. /HVACFLOOR, /HVACROOF, /HVACWALLS, /HVACCOLS and /HVACBEAMS). 84. Navigate to the element holding all the HVAC design data which you want to check (i.e. /HTESTHVAC) and select Utilities>Clashes. You will see a Clash Display form. The left--hand left--hand side of this form controls the clash checking process; the right--hand right--hand side consists consists of a 3D view in which you can look in detail detail at any clashes diagnosed. diagnosed. Select Select Control>Check Control>Check CE from the form’s left--hand left--hand menu bar to run the clash checking process and, when completed, study the Clash List which shows any clashes found. In our case this should show one clash only, with the description 8--6



1 SH CLASH /HTEST/ITEM21.1

This identifies a soft--hard soft--hard (SH) clash between the obstruction obstruction volume associated with the access panel (which we added in Step 139 and which is illustrated in Step 140) and the adjacent wall. To see this properly in the form’s 3D view, set the graphics representation to show obstruction volumes (as explained in Step 140) and zoom in close to the access panel. Notice how the clashing items are highlighted in shades of red (if they are not, repeat the Check CE operation to regenerate the clash data).

85. To see more information about the clash, select Query>Clash> Detail from the Clash Display form’s menu bar. You will see a Clash Detail form as follows:

Obstruction volume for access panel Adjacent wall Location of clash

button is set set to On, On, thus hus: , each ach new new NOTE: If the Auto Clash but element that you create is checked immediately for clashes as the design is built up. This can slow down progress when you are adding many new elements, but is very useful when you want to add a few new items to an existing design which has already been checked for clashes.

8.4 8. 4

Gene Genera rati ting ng a Da Data ta Outp Output ut Re Repo port rt The reporting utility lets you read selected information from the database and present the output in a tabulated format. Each report can be customised by specifying some or all of the following:


8--7


D

Where the output is to appear (on the screen or in a file ready for printing).

D

An introductory header which is to appear at the beginning of the report.

D

The page length (if the report is to be paginated).

D

The page layout, layout, including including number and positions positions of columns, columns, column headings, etc.

D

Any headers and footers which are to appear at the top and bottom of each page.

D

The selection criteria which define which data settings are to be included in the report.

Once such a report has been designed, its specification can be saved for future use in the form of a report template file. The ways in which you define how a given report is to be generated and presented are beyond the scope of this exercise, but we will look at the results of the process by using u sing a pre--prepared pre--prepared template which outputs a material take--of take--offf list showing the length of tube needed to build our design. (You will probably use your company’s standard templates for most reports anyway, in which case this is the method you would normally use in practice.) Exercise Exercise continues:

86. Select Utilities>Reports>Run to initiate the reporting process. You will see a File Browser listing all files in the current reporting directory (specified by your System Administrator as part of the project set--up set--up procedure). Check that you are in the ...\REPORTS\TEMPLATES directory. All files with a .tmp suffix are report templates. Select hvac_list.tmp, which has been designed to produce a list of the principal components (omitting subcomponents and branch connectors) in the HVAC design. Click OK on the File Browser. Browser. 87. To run the report defined by the chosen template, you must specify two things (as determined by the rules within the template): where the report is to appear, and what part of the database hierarchy is to be read when extracting the required types of data. When you OK the File Browser to specify the template, a Report Report Details form appears which lets you do this. 8--8



Leave the Filename text--box text--box empty (which will send the report to the screen automatically). In the Hierarchy text--box, enter /HTESTHVAC, since we want to list the components for the whole of the HVAC network. Click OK to run the report.

88. The tabulated report output will be displayed in a Command Output window which is opened automatically, like this:


8--9


8--10



This report lists all principal components in the specified network (in this case the whole of our HVAC design model) in branch headhead --to-to --tail order. order. The type and key dimensions for each component are tabulated as predefined by the template; any other properties could have been added (see list in Section C.10), and the sequence sorted into a different order of priority, if required by the template designer. For example, the inline items shown with Item Number 0 could have been identified by another column showing the component names.

8.5 8. 5

Plo Pl otting ing the Des esig ign n Model odel PDMS’s drawing module provides very powerful facilities for generating annotated and dimensioned plots of all or part of the design model. We will use just a small part of this power to produce an isometric plot of our HVAC layout using default settings only.


In order for the drawing facilities facilities to apply the correct correct rules for representing HVAC items, we must set a design attribute which will tell the drawing module how to interpret the design data. The attribute used for this purpose is the Function attribute of the parent Zone.

89. Navigate to the Zone which holds the HVAC design data (/HVACZONE) and select Modify>Attributes . You will see a Modify Attributes Attributes form listing the current settings for the Zone. The Function attribute will probably say unset; it is this setting which we need to change. Select the Function line in the list. You will see a small Function form showing the current setting. Edit the text to replace unset by Heating . OK / Apply the changes. We must now switch from the DESIGN module, which we have been using to create the design model, to the DRAFT drawing module. HVAC Design Using VANTAGE PDMS Version 11.4

8--11


90. Select Design>Modules>Draft>M Design>Modules>Draft>Macro acro Files. When the DRAFT applications have been loaded from their macro files, you will see the DRAFT General menu bar and an empty empty 2D view window called Main Display (analogous to the 3D View window which we have been using in DESIGN), thus:

Drawing sheet will be displayed here

We must next set up an administrative hierarchy to define how plots are to be stored (in a real project this would probably have been done for you already). The parts of the hierarchy with which we are concerned here are as follows:

8--12



DEPARTMENT (DEPT)

REGISTRY (REGI)

LIBRARY (LIBY)

DRAWING (DRWG) SHEET (SHEE)

LIBRARY (LIBY) Standard symbols, annotations etc.

VIEW Design database elements to be drawn

91. Select Create>Department and name the element HVACDEPT. Click OK. You will now see a Department Information form. Attributes set at Department level are cascaded down to all lower levels. To set them, click the Attributes button to display a Department Attributes form. On the latter form: D

D

Select the A4 drawing sheet size (note that this sets the Width and Height automatically). Leave all pen definitions, hatch patterns and terminators at their default settings.

D

From the Ruleset Reference options, select /DRA/PRJ/REPR/GEN/HVAC .

D

Set Backing Sheet Reference to Reference and select /DRA/MAS/BACKS/MET/A4_Land . This will apply standard borders and data areas to all drawings created in this Department.

The settings should now look like this: HVAC Design Using VANTAGE PDMS Version 11.4

8--13


D

Click Apply , then Dismiss.

Check that the Create Registry button on the Department Information form is set to On and OK this form. You will see a Create REGI form. REGI form.

92. Name the Registry HVACREGI and click OK. You will see a Registry Information form. Note that all attribute settings for the Registry have been copied from its owning Department (any individual attribute cascaded in this way can be overwritten at a lower level if required). Set Create Drawing to On and select Explicitly . Click OK. You will see a Create DRWG form.

93. Name the Drawing HVACDRWG and click OK. You will see a Drawing Definition Definition form. Enter the Title as HVAC View . Note that the Date and Drawn By entries are derived automatically from your system log --in data. Click Apply , then Dismiss. 8--14



That completes the setting up of the drawing administration hierarchy; we are now in a position to define the content of a drawing sheet ready for viewing and plotting.

94. Select Create>Sheet>Explicitly and OK the Create SHEE form. The Main Display view will show the backing sheet specified in Step 91. You will also see a Sheet Definition form. Note that all attribute settings have been cascaded down from Department level. Click Apply , then Dismiss. The detailed design data, extracted directly from the Design database, is applied to the sheet in the form of individual Views.

95. Select Create>View>UserCreate>View>User --defined defined and OK the resulting form. A User-defined A User-defined View form will be displayed, and a default rectangle will be added to the Main Display to show where the design data for this view will be plotted. We will plot a single view on the sheet, so we will first resize the default view area to fill the available space. To do so, select Frame>Size>Cursor from the User-defined View menu. The resulting Point resulting Point Construction Option form lets you choose various ways of identifying the extremities of the required area. Using the 2D Cursor Hit method, pick points just j ust inside the top--left top--left and bottom--right bottom--right corners of the drawing area within the backing sheet layout. On the User-defined View form, enter the Title as ISO3 View ; set the Type to Global Hidden Line; and set the Direction to ISO3 (select this using the options available from the middle of the three Direction gadgets). The part(s) of the design model which are to be plotted are specified by means of a drawlist (similar to the way in which the content of a 3D View was specified in DESIGN). Select Graphics>Drawlist from the User-Defined View menu to display the Drawlist Management Management form. In the Reference List Members list, navigate to the HVAC element which holds the complete HVAC network (/HTESTHVAC) and click the Add button to add it to the drawlist. We must now set the drawing scale so that the plotted model representation fits sensibly into the area available on the sheet. First click the Auto Scale button on the User-defined View form and notice how the precisely calculated scale is displayed in the HVAC Design Using VANTAGE PDMS Version 11.4

8--15


adjacent text--box. text--box. To modify this to the nearest smaller standard scale, click the Nearest button. The chosen standard scale will now be displayed (e.g. 1/150). Click Apply to implement the new scale calculation calculation.. The final settings settings will look something something like this:

Click the Update Design button to plot the drawlist element(s) in the Main Display at the chosen scale, thus:

8--16



This is as far as we will go in this exercise, although the full range of 2D drafting facilities facilities available is extensive, extensive, allowing you to add dimensioning and labelling data derived directly from the design model, and to add any other specific 2D annotation which you require.

8. 6

Conclusion That concludes both the tutorial exercise and this introduction to some of the ways in which PDMS and the CADCENTRE applications can help you in your HVAC design work. We hope that working through this book has given you an insight into the potential power of PDMS and that you will have gained sufficient confidence confidence to explore explore some of the more advanced options on your own. For further technical details, refer to the sources of information listed in Appendix D. If you have not already done so, you are strongly advised to attend one or more of the specialised PDMS training courses, which will show you how to get the maximum benefits from the product in your own working environment (see Section 1.3).


8--17

Index 3D view, 3--4

Clash checking

definition, 1--3 1--3

checking process, 8--5 clash limits, 8--6 extent of clash, 8--4 obstruction levels, 8--4 obstruction list, 8--5 principles, 8--4 8--4 Clash limits, 8--6

loading, 5--3 5--3

Clashing extent, 8--4

A Access panel, 7--6 Air turning vanes, van es, 66 --10 Application

Attribute, definition, 4--2

Clearance, definition, 8--5 Composite component, representation, 5--11

B

Control button, 3--9 3--9

Branch

Copying existing components, 5--14

definition, 4--1 4--1

Current element, definition, 4--3

main and side branches, 5 --7 side, 6--4 Branch head, definition, 44 --2

D Data consistency checking, principles, 8--2

Branch head/tail, connecting, 5--9

Database hierarchy

Branch tail, definition, 4 --2 control, 3--9

Design data, 4--2 Draft data, 8--12 Design data, checking, 8 --2

option, 3--8

Design database hierarchy, 4--2

radio, 3--7

Design parameters, parameters, 5--1 5--1

toggle, 3--7

Design session, ending, 44 --10

Button

Detailing specification, 5--5

C

Display

Check box, 3--7

restoring, 5--2 saving, 4--10 Draft applications, loading, 8--11 8--11

Clash, definition, 8--4

Draft database hierarchy, 8--12

CE, 4--3


IndexInd ex--- 1

Index

Draft module, 8--11

Item naming, 7--4

Drawlist, Drawli st, 4-4-- 5

Item numbering, 7--4

Ducting, implied, 5--10 5--10

Item numbers, querying, 8--2 Itemising, 7--4

E Element, definition, 4--2 Ending design session, 44 --10

F Forms and display, display, saving, 4--10 4--10 Function attribute, setting for DRAFT, 8--10

G Gaps between components filling automatically, 7--2 measuring, measurin g, 55 -- 15, 77 --1 Geometry set, 5--2 Graphical view, 3--4 Grid, for tiling, 66 --2

H Hard obstruction, 8--4 Head, of branch. See Branch head Help, on--line, on--line, 3--9 3--9 Holes, representation, 7--8 HVAC Designer application, loading, 5--3 HVAC HVAC element, definition, def inition, 4--1 4--1 HVAC form, 5--3

J Joints, specifying, 7--6 L Leaving design session, 4--10 Limits, setting for view, 4--5 List, scrollable, 3 --8

M MDB selection, 3--2 Member, definition, 4-4-- 3 Members list, 3--4 3--4 Menu, pull--down, pull--down, 3--5 3--5 Menu bar, 3--4, 3--5 Module, definition, 1--3 Module selection, 3--2 Mouse buttons, functions, f unctions, 33 --4 Multiple database selection, 3 --2

N Naming, automatic, 7--4 Negative primitive, definition, 4--2 4--2 Numbering, automatic, 7--4

O Obstruction levels, 8--4 Obstruction list, 8--5 8--5

I Implied ducting, 5--10 5--10

Obstruction volume, representation, 7--7

Insulation, querying, 8--2

OnOn --line -l ine help, h elp, 3 -- 9

Isometric view, 4--5

Option button, 3--8

Item details, querying, 8--1

Owner, Owner, definition, 4--3 4--3

Index In dex---2


Index

P P--arrive, 5--1 P--leave, 5--1 P--point definition, 5--1 5--1 p--arrive, 5--1 p--leave, 5--1 point set, 5--2 Panning Panni ng view vi ew,, 44 -- 7 Parameters, catalogue components, 5--1 Password entry, 3--2 Physical clash, definition, 88 --4 Plotting facilities, 8--11 8--11 Point set, 5--2 Position, querying, 8--2 8--2 Primitive definition, 4--2 4--2 geometry set, 5--2 5--2 Project selection, 3--2 Prompts, 3--6 Pull--down menu, 3--5

S Save work facility, facility, 4--9 4--9 Saving design changes, 44 --9 Screen layout restoring, 5--2 saving, 4--10 Scrollable list, 3--8 Setting out point (SOP), (S OP), 66 --2 Side branch, 6--4 Site, definition, 4--1 4--1 Soft obstruction, 88 --4 Specification, detailing, 5--5 5--5 Status bar, bar, 3 --4, -4 , 3 -- 6 Status form, 3--6 3--6 Stiffeners, adding, 7--3 7--3 Structure, definition, 4--2 Subcomponent, 5--11 Submenu, 3--5 T Tail, of branch. See Branch tail Text box, 3--7 Tile, positioning, 6--3 Toggle button, 3--7 Tool bar, 3--4 Touch, definition, 8--4 Training courses, 1--2 1--2

R Radio button, 3--7 Reports generating, 8--7 8--7 principles, 8--7 8--7 templates, 8--8 Representation holes, 7--8 obstruction obstruction volumes, 7--7 7--7 Rotating view, view, 44 -- 7 HVAC Design Using VANTAGE PDMS Version 11.4

U User name n ame entry en try,, 3 -- 2 V View 3D/graphical, 3--4, 4--4 centre of interest, 4--9 panning, 4--7 rotating, 4-4-- 7 zooming, 4--7 View direction, 4--5 4--5 IndexInd ex--- 3

Index

W World, W orld, definition, 4--1 4--1 Z Zone, definition, 4--1 Zooming view, 4--7

Index In dex---4


Tutorial Vantage Pdms - Hvac Design Volume 1

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