Lats-Multi v-Multi v Model Selection[20071204093730603]

LG Air Conditioner Conditioner Technical Solutions (LATS) Multi V Model Selection Program User Guide Ver 1.7.11.26

LATS User Guide

Table of Contents 1. LATS OVERVIEW

4

LATS Introducti Introduction on ............ .......................... ............................ ........................... .......................... .............4 LATS Multi V Model Selection Program Prog ram .............................. ................... ..................... .......... 5 System Requirements for LATS .......... ..................... ...................... ..................... ................. ....... 6

2. LATS MULTI V MODEL SELECTION PROGRAM

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Introduction Introduct ion ............. .......................... ........................... ........................... ........................... .................. ....７ Installation Installati on ............. .......................... ........................... ........................... ........................... .................... ......９ Usage Description : Tree Mode ..............................................１１ ■

Step 1. Create Project ························································ １２

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Step 2. Select Model··························································· ２３

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Step 3. Modify the length of pipe arrangement arrangement ·························· ２９

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Step 4. Check System ························································· ３０

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Step 5. Write the report ······················································ ３２

３９ Usage Description : CAD Mode Mode.......... ..................... ...................... ..................... ............... .....３９ ■

Step 1. Create Project ························································ ４０

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Step 2. Select Model··························································· ４８

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Step 3. Draw System and Design Piping···································· ５９

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Step 4. Check System ························································· ７０２

LATS User Guide

Table of Contents 1. LATS OVERVIEW

4

LATS Introducti Introduction on ............ .......................... ............................ ........................... .......................... .............4 LATS Multi V Model Selection Program Prog ram .............................. ................... ..................... .......... 5 System Requirements for LATS .......... ..................... ...................... ..................... ................. ....... 6

2. LATS MULTI V MODEL SELECTION PROGRAM

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Introduction Introduct ion ............. .......................... ........................... ........................... ........................... .................. ....７ Installation Installati on ............. .......................... ........................... ........................... ........................... .................... ......９ Usage Description : Tree Mode ..............................................１１ ■

Step 1. Create Project ························································ １２

■

Step 2. Select Model··························································· ２３

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Step 3. Modify the length of pipe arrangement arrangement ·························· ２９

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Step 4. Check System ························································· ３０

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Step 5. Write the report ······················································ ３２

３９ Usage Description : CAD Mode Mode.......... ..................... ...................... ..................... ............... .....３９ ■

Step 1. Create Project ························································ ４０

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Step 2. Select Model··························································· ４８

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Step 3. Draw System and Design Piping···································· ５９

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Step 4. Check System ························································· ７０２

LATS Overview ■

Step 5. W rite the report ······················································ ７３

3. TIPS FOR USING MULTI V MODEL SELECTION PROGRAM

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Set Scale in Multi V Model selection program ............................７４ Assign one load for one indoor unit in Multi V Model selection program７５ Draw orthogonal pipes in Multi V Model selection program ..........７６

4. CONTACT INFORMATION

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1. LATS Overview   

LATS I ntroduction LATS Multi V Model Selection Program System Requirements for LATS

LATS Introduction LATS (LG Air Conditioner Technical Solution) program is a total design solution for LG system air conditioners. It consists of load calculation program and model selection program for system air conditioners. Load calculation program and model selection program can be selectively used. Although users use different load calculation program other than LATS, they can use LATS model selection program.

Note : System air conditioners mean the devices that can operate multiple in door units with one outdoor unit. It is referred as system air conditioners or multi v air conditioners. Each indoor unit can be operated separately and independently.

Note : LG provides various technical data like products, architecture information, maintenance information, etc by the homepage, www.lgeaircon.com. LATS programs and user guides are automatically updated on this site.

LATS Overview

LATS Multi V Model Selection Program LATS Multi V Model Selection program selects the specific model for system air conditioners. It can select products, pipe arrangements, electric design by using AutoCAD. This program is classified as Tree Mode and Cad Mode. For simple piping work, Tree Mode is used. Users can select models even they do not have CAD drawings for building, because they have Tree Mode in a program.

Note : LATS provides auto update feature. When users start LATS program, an auto update notification message appears to guide you a new version of a program.

5

LATS Overview

System Requirements for LATS This is the hardware requirements for using LATS.

Item

Description

CPU

Intel PII,500MHz

Chip Set

Intel

Main Memory

128 MB

Disk capacity/speed

> 40 GB / 5400rpm / < 15ms access

Graphics

Integrated / PCI based

Audio

Integrated / PCI based

This is the software requirements for using LATS.

Item

Description

OS

Windows 98 SE, Windows NT, Windows XP & Windows 2000

Web Browser

Above Internet Expiorer 5.0

Application Software

MS Excel, MS Access

Caution: To get an output as a report form, Micosoft Excel program should be installed on users’ computers before they use LATS program.

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2. LATS Multi V Model Selection Program   

Introduction Installation Usage Description

Introduction LATS Multi V Model Selection program can be operated in two types of modes. Tree Mode is displayed as a tree form, for a simple piping work. When there is no CAD drawing for a building, this program can provide the proper quantity of indoor/outdoor air conditione rs, cutoff, additional refrigerant amounts, etc. However, sometimes users should rearrange the drawing to be transformed by CAD. To do so, users should manage the drawing work on CAD Mode at first.

Caution: Drawings that were managed at CAD Mode at first can be transformed into Tree Mode. However, the drawings that were managed at Tree Mode at first cannot be transformed into CAD Mode. In this case, users should select new CAD Mode to design the piping work. The file that is designed at CAD Mode can be outputted as .dxf file. It can be opend and edited in AutoCAD.

1. Create Project Enter the location information and design condition. Psychrometric chart automatically calculates a dry bulb temperature, wet bulb temperature, and relative humidity of current air. Then load information related to cooling and heating is entered. If users have already used LATS Load program, the result value can be simply loaded by a button. It there is no result, users can manually insert the cooling and heating load as a KW unit.

2. Select Model Outdoor unit automatically sets its entire heat load value. Proper indoor units for each room can be selected by dragging indoor icon or double clicking the box. After indoor air conditioners are chosen, outdoor air conditioners can be chosen by double clicking the outdoor unit icon. Basically, Auto Select Mode is recommended for this.

LATS Multi V Model Selection Program

3. Modify the length of pipe arrangement Users should modify the default length of pipe into an actual length. Users can directly insert the length by double clicking the line. Elbow or curve line should be considered. Combination rate and total length can be checked at any time during the design. After this work is completed, Auto Piping button should be clicked. A meesage that tells the success of auto selection feature appears. The size of pipe and model name of branch are automatically decided based on EPDB (Engineering Product Data Book) data that http://www.lgeaircon.com provides. EPDB is a PDF file that contains the specification information, piping information, etc of products.

4. Check System Click System Check button to check the entire system including model selection, piping work, validation, cooling/heating simulation, etc. Schematic Diagram provides the wire connection picture of indoor/outdoor air conditioners. The quantity of an additional refrigerants that users should install according to the quantity and information for cutoff devices on el ectric leakage is calculated automatically.

5. Write the report The result is outputted as a Microsoft Excel file. Comments, customer information, title, table of contents, system selection, product lists, piping drawings, wire connection picture, etc are covered. For a written estimate, the product price and installation cost can be inserted by vendors.

Note: Tree Mode is based on a system, while CAD Mode is based on a floor. One system matches with one outdoor unit. Tree mode has one outdoor unit and its related hierarchy.

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Installation 1. Access www.lgeaircon.com to download LATS-Multi V program. Execute the LATS-Multi V program on your local computer. InstallShield Wizard for LATSMultiV appears. Click Next.

2. License Agreement window appears. Read it carefully and click Yes. .

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3. Customer Information window appears. Enter your User Name and Company Name. For Serial Number, enter latsmultiv. Then click Next.

4. Installation is completed. Click Finish.

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Usage Description : Tree Mode LATS Multi V Model Selection program can be operated in two types of modes. Tree Mode is displayed as a tree form, for a simple piping work. When there is no CAD drawings for a building, this program can provide the proper quantity of i ndoor/outdoor air conditioners, cutoff, additional refrigerants, etc. However, sometimes users should rearrange the drawing to be transformed by CAD. For CAD Mode, users can manage the drawing work on CAD at first. Following introduces how to use LATS Multi V Model selection program in Tree Mode. This is the main flow of using LATS Multi V model selection program.

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Step 1. Create Project 1

1. Click

icon or click “Start  Programs  LGE ” LATSMultiV” to run LATS Multi v model selection program. Then the program runs and this screen shot appears. 2

This is the initial screen display of LATS Multi v model selection program. Following explains each menu and button.

1 2

3 3

1

Menu

File

Menu

Description

New Project

This menu creates a new project.

Open Project

This menu opens a project that users select.

Close Project

This menu closes a project. If you want to open a new project, you should close the previous one first.

View Project

This menu shows a project. １２


Save Project

This menu saves a project.

Save Project As

This menu saves a project as a specific name.

Delete Project

This menu deletes a project

Export

This menu exports a project as a GCSI file.

Exit

This menu closes a project and finishes a program.

System

Menu

Description

Create System

This menu creates a system.

Copy System

This menu copies a system.

Delete System

This menu deletes a system.

System setting

This menu sets a system.

Space Load Summary

This menu shows a space load summary.

Auto Piping

This menu automatically selects Y branch, header and pipe diameter automatically.

System check

System Check supports validatio n check and performance simulation. - Validation check : It check total piping length, longest pipe length after 1st branch, each pipe length and all the validation in PDB. - Performance simulation : It simulates system’s performance from combination, design condition, pipe length and defrosting factor.

System Invalidation property

This menu checks the proper connectivity and number of included sub items.

Generate reports

This menu generates the final report as a Micosoft excel file.

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View

Menu

Description

Tool Bar

This menu shows Tool bar on your program display.

Status Bar

This menu shows Status bar on your program display.

System Log Viewer

This menu positions a window on your program display that shows a system log.

Project Navigator

This menu shows the left panel on your program display. You can control the size of this part with and closes this part with .

System View

This menu shows System panel, Indoor Units List and System Information.

Schematic Diagram

This menu shows a hierarchical diagram among outdoor unit, indoor unit, brances and pipes.

System preview

This menu shows a current system in a full view to help users watch the entire system easily.

Option

This menu sets the term of project auto save period. Selected box size is also set at CAD Option.

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Language

Menu

Description

English

This menu shows the current display in English.

Korean

This menu shows the current display in Korean.

Spanish

This menu shows the current display in Spanish.

French

This menu shows the current display in French.

German

This menu shows the current display in German.

Italian

This menu shows the current display in Italian.

User Setting

Users can set their own language that is provided at the above menu.

Help

Menu

Description

LATS Help

2

This menu shows the help contents for LATS.

About LATS

This menu shows the version and information of LATS.

View Update Info

This menu shows the updated information of view.

LATS-Multi V

Menu

Description

Project Information

This menu shows project information.

Model Selection

This menu is selected when users select models in a program.

Generate Report

This menu generates final report that is created after users use LATS-Multi V program. １５


3

Project

Menu

Description

Create Project


View Project Info

This menu shows a project information.

Open Project

This menu opens a popup window to select a project to open, which is already made.

Delete Project

This menu deletes a project.

Close Project

This menu closes a project. If you want to open a new project, you should close the current one first.

2. Press Create Project button to see this window.

1 2 4

3 5 6

7

1 Date that the project is created 2 Project Name 3 Path of the project to save it １６


4 Project Unit

SI/IP: For heat load calculation unit, LATS includes SI, which is an international standard and IP, which is an English standard. US and middle east use IP while Europe uses SI. Some countries use IP for quantity and SI for l ength. This kind of mixed usage is also possible. Simulation Mode: Users select Cooling mode to make their projects based on cooling operation. In this case, the usage is focused on cooling. Users select Heating mode to make their projects based on heating operation. In this case, the usage is focused on heating. 5

Outdoor Unit Type Users can decide the outdoor unit type that they want from the drop down button.

6

Detailed Comments for the project Users enter their detailed comments on this blank. Users check the checkbox of Use CAD to use CAD Mode.

7 Direction button

User can move next step.

Note :

Tree mode shows the design as a tree shape.

Cad mode shows the design on an existing CAD drawuing. Output can be transformed as a DXF file and opened at Auto CAD to be editted.

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Caution: Be sure to active Use CAD option if you are using CAD drawing for model selection. To Use Tree mode, do not check it.

From this Create Project window, enter t he project information. Then click Next. - Date that the project is created - Project Name - Path of the project to save it - Project Unit - Simulatino Mode - Outdoor Unit Type - Detailed Comments for the project

3. Select country and city. Then input design condition. 1

Change the design condition if the given values do not satisfy your requirements. If you change one of the following air property (DBT,WBT,RH), psychometric process will be executed. Other related values will be found. Click Next.

2

1 Insert the country, State/Province and City information. 2 Dry bulb temperature, Wet bulb temperature and Relative humidity should be inserted. This information should be inserted for each indoor and

outdoor also in Cooling a nd Heating condition.

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4. When selecting Open Load, you can load the result calculated by LATS-LOAD. Clik Open load button. - Open load You can open the load information that was previously calculated by LATS Load program. - Add floor/Add space If you do not use the previously calculated value of LATS Load program, you can manually insert the floor information with this button. - Remove row, Remove all These row buttons are activated only when floors are added manually in advance. This button removes the currently added row or removes all rows. After you complete your setting, click Next.

5. From this window you can select the pre-calculated heat load of Load program. Select one and click OK.

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6. The pre-calculated information is displayed as follows. If you do not have the pre-defined value, click Add floor or Add space to add a new row. To remove it, click Remove all button. If LATS LOAD values are not available, manual load entry can also be done simply by adding values in columns Click Next.

7. Input Customer & contractor Information. It will be printed out on your final report. After filling all data, click Finish. Then model selection window appears.

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This is the initial display of Tree mode. Following is a description for menus and icons.

２１


Icon

Description Save project, Ctrl + S System setting, Ctrl + 4 New system, Ctrl + 1 Copy system, Ctrl + 2 Delete system, Ctrl + 3 Auto piping sets the pipe arrangement automatically. F5 System Check checks if the current system is available to be installed and designed. F6 System Validation property checks if the o utdoor unit, indoor unit and brances has proper relation and hierarchy. F7 Toggle description System load summary sees the system load entirely. Ctrl + 5 View reports, F8 System preview Open/Close, Toggle Navigator, Ctrl + P System panel that shows a window that you work on currently Control line Power cable Pipe line

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Step 2. Select Model From this window, you can start selecting outdoor units, indoor units, branch pipes and header pipes according to our design. Initial window for Multi V program looks like this.

1. Double click on stand-by box. Then this window appears. Choose the type of equipments that you want and click OK. Following is a description for these types.

Menu Indoor Units Y branch

Description Indoor Units This equipment is used for large volume of systems. Pipe can have two brances. Numbers are set before a specific model name is assigned. Specific model is assigned after auto piping.

4 header

Pipe has 4 branches.

7 header


10 header

Pipe has 10 branches. Header is rarely used because of the difficulty in installat ion. This is used for small volume system.

2. If you choose Indoor Unit, this window appears to view the detailed information. Then click OK. Following is an example of choosing an indoor unit and 4 header.

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At this display, select equipment and design pipes. By simply double clicking an item, you can add or modify the hierarchy of the system.

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3. At this screen, if you double click Outdoor unit, Y-Branch or indoor unit, a window that displays detailed information of an item is shown. Following is an example of the result after you double click Y-Branch. After viewing it, click OK.

4. Double click room to assign load. This window appears. Select room load and click OK. Then room load is assigned.

２５


Then as you see below, the room that you double clicked turned to have Floor-001(room1) information. Like this, choose other rooms to assign heat load.

２６


5. Double click Indoor Unit or Drag & Drop Indoor Unit from Toolbar to select indoor unit. This popup window appears. Check the ratio (IDU capacity over Design load). If you want to select accessory, click accessory button. Like this, finish assigning undoor unit selection. Then click OK.

6. Double click Outdoor unit icon after finishing indoor units selection. Outdoor unit window appears. Outdoor unit information supports these types:. - Search Model : It lists models according to a category. - Full Model : It lists all models in same ODU type. - Auto Selection : It lists the supporting model to designed system. (below 100% combination) We recommend you using auto selection. If you use defrosting factor, check Defrosting factor

２７


Then as you see below, the outdoor unit icon has its model name.

２８


Step 3. Modify the length of pipe arrangement 1. If you want to change pipe length, double click pipe length value. This window appear. Change pipe length as you want. Pipe length should be the equivalent length. You have to check system property window which is notified at the next window. (Combination, total pipe length)

2. Click Auto Piping button at the left part of initial window, to select Y branch, Header and pipe diameter automatically. Firstly, pipe’ s diameter will be decided according to pipe length that is after 1 st branch and capadity of indoor units, and then Auto piping will select a appreciate branch models or Header models More detailed information, limitation and rules are documented in PDB.

3. This window appears to confirm your selection. Click OK. If any problem is not occurred, All branch and header models are selected automatically. If Y branch or Header do not exists, you have to change pipe design or check branch or header in PDB

２９


Step 4. Check System 1. Click System Check to simulate the system. System Check supports validation check and performance simulation.

Menu

Validation check

Description It checks total piping length, the longest pipe length afterst 1branch, each pipe length and all validation in PDB. It checks the combination ratio, which should be within 50 ~ 130%. The indoor unit and outdoor unit should be maximum 130 percentage. (if Model type is PLUS II, Any model can be combinated by 200%) (PLUS I) If the position of outdoor unit is higher than indoor unit, it can be maximum 40 meters. For the opposite case, it should be 50 m eters. (PLUS II) If the position of outdoor unit is higher than indoor unit, it can be maximum 100 meters. For the opposite case, it should be 100 meters. More detailed information, limitation and rules are documented in EPDB.

Performance simulation

It simulates system’s performance from combination, design condition, pipe length and defrosting factor.

Caution: * We can guarantee the operatoin only within 130% Combination. (PLUS II Models only) If you want to connect more than 130% combination, please contact us and discuss the requirement like below. 1) If the operation of indoor unit is more than 130%, low airflow operation is recommended in all the indoor units. 2) If the operation of indoor unit is more than 130%, additional refrigerant is needed according to the headquarter guidance.

Each indoor unit capacity is simulated and changed. After system is checked, this window appears. Click OK.

３０


2. Press Schematic Diagram button to see this display. Check Additional refrigerant amounts and Wiring design. If you want to go back to Tree mode, you can press Tree button of the left part of initial window.

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Step 5. Write the report 1. Click Generate Report on the left part of initial window. Select the sheet of reports to make. Then click OK.

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These are the examples of final report. This is the cover of final report.

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This is the air conditioning proposal. It covers the proposal information and costs including installation, accessories, etc.

This is the table of contents.

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This is the load output. It contains building location, design conditions, This is the model selection summary. Outdoor units, Indoor units, pipes and cooling and heating loads, etc. accessories are included. ３５


This is the result of system check. It includes design condition, outdoor/indoor information, pipes, etc.

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This is the pipe design tree illustration and schematic diagram for electric wires.

３７


This is the model selection cost analysis sheet. It totally covers outdoor units, indoor units, pipes and branch/header common pipes. This document can be used as an estimation sheet.

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Usage Description : CAD Mode LATS Multi V Model Selection program can be operated in two types of modes. Tree Mode is displayed as a tree form, for a simple piping work. When there is no CAD drawings for a building, this program can provide the proper quantity of i ndoor/outdoor air conditioners, cutoff, additional refrigerants, etc. However, sometimes users should rearrange the drawing to be transformed by CAD. For CAD Mode, users can manage the drawing work on CAD at first. Following introduces how to use LATS Multi V Model selection program in CAD mode. This is the main flow of using LATS Multi V model selection program.

３９


Step 1. Create Project 1

1. Click

icon or click “Start  Programs  LGE ” LATS-MultiV” to run LATS Multi V model selection program. Then the program runs and this screen shot appears. 2

This is the i nitial screen display of LATS Multi V model selection program. Following explains each menu and button.

1 2

3 3

1

Menu

File

Menu

Description

New Project


Open Project

This menu opens a project that users select.

Close Project

This menu closes a project. If you want to open a new project, you should close the previous one first.

View Project Save Project

This menu shows a project. This menu saves a project. ４０


Save Project As

This menu saves a project as a specific name.

Delete Project

This menu deletes a project

Export

This menu exports a project as a GCSI file.

Exit

This menu closes a project and finishes a program.

System

Menu

Description

Create System

This menu creates a system.

Copy System

This menu copies a system.

Delete System

This menu deletes a system.

System setting

This menu sets a system.

Space Load Summary

This menu shows a space load summary.

Auto Piping

This menu automatically selects Y branch, header and pipe diameter automatically.

System check

System Check supports validatio n check and performance simulation. - Validation check : It checks total piping length, the longest pipe length after 1st branch, each pipe length and all validation in PDB. - Performance simulation : It simulates system’s performance from combination, design condition, pipe length and defrosting factor.

System Invalidation property

This menu checks the proper connectivity and number of included sub items.

Generate reports

This menu generates the final report as a Micosoft excel file.

４１


View

Menu

Description

Tool Bar

This menu shows Tool bar on your program display.

Status Bar

This menu shows Status bar on your program display.

System Log Viewer

This menu positions a window on your program display that shows a system log.

Project Navigator

This menu shows the left panel on your program display. You can control the size of this part with and closes his part with .

System View

This menu shows System panel, Indoor Units List and System Information.

Schematic Diagram

This menu shows a hierarchical diagram among outdoor unit, indoor unit, brances and pipes.

System preview

This menu shows a current system in a full view to help users watch the entire system easily.

Option

This menu sets the term of project auto save period. Selected box size is also set at CAD Option.

４２


Language

Menu

Description

English

This menu shows the current display in English.

Korean

This menu shows the current display in Korean.

Spanish

This menu shows the current display in Spanish.

French

This menu shows the current display in French.

German

This menu shows the current display in German.

Italian

This menu shows the current display in Italian.

User Setting

Users can set their own language that is provided at the above menu.

Help

Menu

Description

LATS Help

2

This menu shows the help contents for LATS.

About LATS

This menu shows the version and information of LATS.

View Update Info

This menu shows the updated information of view.

LATS-Multi V

Menu

Description

Project Information

This menu shows project information.

Model Selection

This menu is selected when users select models in a program.

Generate Report

This menu generates final report that is created after users use LATS-Multi V program. ４３


3

Project

Menu

Description

Create Project

This menu create a new project.

View Project Info

This menu shows a project information.

Open Project

This menu opens a popup window to select a project to open, which is already made.

Delete Project

This menu deletes a project.

Close Project

This menu closes a project. If you want to open a new project, you have to close the previous one first.

2. Press Create Project button to see this window.

1 2 4

3 5 6

1 Date that the project is created 2 Project Name 3 Path of the project to save it 4 Project Unit ４４


SI/IP: For heat load calculation unit, LATS includes SI, which is an international standard and IP, which is an English standard. US and middle east use IP while Europe uses SI. Some countries use IP for quantity and SI for length. This kind of mixed usage is also possible. Simulation Mode: Users select Cooling mode to make their projects based on cooling operation. In this case, the usage is focused on cooling. Users select Heating mode to make their project based on heating operation. In this case, the usage is focused on heating. 5

Outdoor Unit Type Users can decide the outdoor unit type that they want from the drop down button.

6

Detailed Comments for the project Users enter their detailed comments on this blank. Users check the checkbox of Use CAD to use CAD Mode.

Note :

Tree mode shows the design as a tree shape.

Cad mode shows the design on an existing CAD drawuing. Output can be transformed as a DXF file and opened at Auto CAD to be editted.

Caution: Be sure to active Use CAD option if you are using CAD drawing for model selection. To Use Tree mode, do not check it.

４５


From this Create Project window, enter the project information. Then click Next. - Date that the project is created - Project Name - Path of the project to save it - Project Unit - Simulatino Mode - Outdoor Unit Type - Detailed Comments for the project

3. Select country and city. Then input design condition. 1

Change design condition if the given values do not satisfy your requirements. If you change one of the following air property (DBT,WBT,RH), psychometric process will be executed. Other related values will be found. Click Next.

2

1 Insert the country, State/Province and City information. 2 bulb temperature, Wet bulb temperature and Relative humidity should be inserted. This Dry information should be inserted for each indoor and outdoor both in Cooling and Heating condition.

4. When selecting Open Load, you can load the result calculated by LATS-LOAD. Click Open load button. - Open load You can open the load information that was previously calculated by LATS Load program. ４６


- Add floor/Add space If you do not use the previously calculated value of LATS Load program, you can manually insert the floor information with this button. - Remove row, Remove all These two buttons are activated only when floors are added manually in advance. This button removes the currently added row or removes all rows. After you complete your setting, click Next.

5. From this window you can select the pre-calculated heat load of Load program. Select one and click OK.

6. The pre-calculated information is displayed as follows. If you do not have the pre-defined value, click Add floor or Add space to add a new row. To remove it, click Remove all button. If LATS LOAD values are not available, manual load entry can also be done simply by adding values in columns. Click Next.

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7. Input Customer & contractor Information. It will be printed out on your final report. After filling all data, click Finish. Then model selection window appears.

Step 2. Select Model From this window, you can start selecting outdoor units, indoor units, branch pipes and header pipes according to our design. Initial window for Multi V program looks like this.

1. Click

icon to import CAD files, DWG files, onto this initial window for CAD Mode.

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This is the description for icons in CAD drawing tool bar.

Icon

Description

Icon

Description

Undo

Delete units

Redo

Insert Climb

Zoom in

Insert Y Brances and headers

Zoom out

Create network

Zoom zone

Rotate units in 90 degrees.

Fit for the screen

Rotate units

Pan

Unit Selection

Grid

Insert Outdoor unit

Orthogonal

Insert Indoor unit

Import AutoCAD drawing, dxf file

Insert Space

Export Drawing to dxf file

Insert pipes

Unit Selection

Lef Arrow

Top Arrow

Y-Branch Auto Arrow

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2. From the popup window, choose a dwg file that you want. Then click Open. This will open CAD drawing with message “CAD file is successfully open.” Click on this pop-up window. Then following CAD file is loaded.

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3. It would support 2 scale modes. To input text directly, you should know the drawing scale. Choose proper scale for opening CAD drawing and then click Set. To use drawing line, after inputting line length, click Draw scale line and you should draw the line equal to the length you inputted in CAD drawing. After finishing the scaling, click Exit. You can see the imported CAD drawing like this. If it is out of screen area, click

Fit Window icon for resizing it.

4. Click

the New Room icon for specifying load to different location. Then this window appears. When selecting Open Load, You can load the result calculated by LATS-LOAD program. Add floor or Add space as required. For adding and removing Floor or Space, first click on the row and then click Add or Remove. If LATS LOAD values are not available, manual load entry can also be done simply by adding values in columns. Click on one row and double click the blank to insert the value. Then click OK.

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5. Click your cursor on a specific location (in CAD drawing) where you want to locate this load information. Likewise choose other locations by repeating the above step.

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6. Click

the New Indoor Unit icon. This window appears.

Choose indoor unit type and model. Click Accessory (if any required)

7. This window appears. Choose accessories if it is required. Then click OK.

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8. Then click your cursor at the specific location where you want to locate your indoor unit. Repeat the same steps to locate other indoor units. You can use copy paste command also for locating other i ndoor units.

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9. Click

to connect room information and IDU.

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Caution: You have to connect the middle of Room to the middle of IDU, with your mouse. (marked “X” in middle point).

10. Adjust indoor unit direction by clicking Indoor Unit and then Rotate Angle icon. This window appears. Fill in the required rotation angle and then click OK. You can see pipe connecting point (as dash) at this location of indoor unit.

Caution: All rotation will be taken place by considering initial position as reference.

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11. Click outdoor unit icon. This window will appear Outdoor unit window appears. Outdoor unit information supports these types:. - Search Model : It lists models according to a category - Full Model : It lists all models in same ODU type - Auto Selection : It l ists supporting model to designed system. (below 100% combination) We recommend you using auto selection. If you use defrosting factor, check Defrosting factor Other optional accessories can also be chosen by clicking Accessories button. After selecting above value, click OK.

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12. Click your cursor at a specific location where you want to locate your outdoor unit. You can see outdoor unit icon like the sign on this picture.

Caution: One outdoor unit should have only one system.

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Step 3. Draw System and Design Piping

1. Click

New Equipment icon to see this window. Select Y-branch or Header if it is required. Then click OK.

Menu Indoor Units Y branch

Description Indoor Units This equipment is used for large volume of systems. Pipe can have two brances. Numbers are set before a specific model name is assigned. Specific model is assigned after auto piping.

4 header


7 header


10 header

Pipe has 10 branches. Header is rarely used because of the difficulty in installation. This is used for small volume system.

Caution: Assigning heat load for room, indoor unit, outdoor unit and pipes has no specific fixed order. You can start assigning any of them first.

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2. Then click your cursor at a specific location where you want to locate your new equipment unit, Y-Branch. You can adjust Y-branch direction by clicking Y-branch and then Rotate Angle icon. You can adjust Y-branch direction by clicking Y-branch and then Rotate Angle icon. This window appears. Fill in the required rotation angle and then click OK. You can see pipe connecting point (as dash) at this location of indoor unit. All rotation will be taken place by considering initial position as reference.

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3. Click

New Pipe icon. Then click & drag left button of your mouse on the drawing and finally release this button at indoor/Y-branch, which is the end point of that pipe. You can see drawn pipe between outdoor and Y-branch or Y-branch and Indoor units like the above sample. Connect pipes between various unit, outdoor unit, Y-branch/header and indoor units.

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When you connect the indoor units, Y- branch and outdoor units, they should be connected with line, which starts from the red dot and ends at the red dot.

Caution: Use Ortho On/Off option for drawing orthogonal pipe. After drawing pipes, right click on the pipe (on white color indenter in the middle of pipe) and drag it slightly with Shift Key pressed for locating your pipe orthogonally. You have to connect the object to the object clearly. If you move your pointer near to the connection mark, the pointer would be attached to t he connection point.

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Note:

Outer line of indoor unit has small white rectangle, when it is clicked. Left click a mouse and move the mouse to move indoor units. Or click

to insert an exact angle value for rotation.

4. In the Floor Viewer panel on your initial window, you can add new floor. Right click on Floor0 and choose Add Floor.

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5. After adding floor, right click on the same floor (Floor1 icon) and click Edit icon to see a popup window. Fill in the floor height from outdoor unit and then click Ok. To import CAD drawing, repeat the above step. After adding floor, perform the same operation like the above explanation. Add Room, Indoor Units, Y-branch/Header and Pipes on the new floor like the explanation above.

6. Click

New Climb icon for connecting added floor (Floor1) to the previous floor (Floor0). This popup window appears. Select the floor to link with work floor by climb and click Ok.

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7. Click your cursor at a specific location where you want to locate Climb piping and connect line. You can see this Icon and message “Connected “Connected to Floor1” Floor1” which shows the connected floor. “Connected “Connected to Floor1” Floor1” is connected with an indoor unit. Then this indoor unit is connected to the ourdoor unit at the Floor1 through the “Connected “Connected from Floor0” Floor0” part. part. Outdoor unit should have only one connection line.

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As you see, the other floor has the same icon, which says “Connected “Connected from Floor0.” Floor0.” Then this two floors are connected well.

8. Click

Create Network icon for connecting connecti ng network. If the connection connectio n between pipe and Indoor unit, Y-branch or Outdoor unit is not proper you can see an Error message in your Log Viewer with Error Icon located on wrong connection. Reconnect Error Pipe for further processing. You can see a message “Start Creating Network” in your System Log Viewer.

After correcting pipe connection, click Create Network icon again. If pipes are connected properly then Network Completion message will appear in Log Viewer.

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Note:

Pipe and Indoor unit are not connected tightly. Pipe is not positioned at the red line of an indoor unit. Select a pipe again to connect it to the red point of an indoor unit.

Branch and pipe are not connected well. Select a pipe to connect it to the branch tightly.

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9. Click Auto Piping icon from the left part of an initial window. Auto Piping command automatically selects Y-branch/Header branch name, pipe diameter and pipe length.

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10. The this window appears to confirm your selection. Click OK. If any problem is not occurred, All branches and header models are selected automatically. If Y branch or Header exists, you have to change pipe design or check branch or Header in PDB.

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Step 4. Check System 1. Click System Check to simulate the system. System Check supports validation check and performance simulation. - Validation check : It checks total piping length, the longest pipe length after 1st branch, each pipe length and all validation in PDB. - Performance simulation : It simulates system’s performance from combination, design condition, pipe length and defrosting factor. Each indoor unit capacity is simulated and changed. After system is checked, this window appears. Click OK. If there is an error message. Fix the error and perform these steps again. 1. Create Network 2. Auto piping 3. System Check

2. Click Tree icon for seeing line diagram of this system Pipe length in Tree Mode is equivalent length. So pipe length in CAD mode is not same with that of Tree Mode. Pipe length in CAD mode is real length.

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This is the interpretation for this result, marked on the above picture.

Menu

Description

Indoor Units

6 indoor units were installed among 8 available units.

Combination

Combination ratio is 98%.

Total Pipe

39.2 m of total 220.0 m pipes are installed for the outdoor unit.

Caution: If the combination ratio does not meet the rule of PDB, the design process stops here and does not move to the next step.

If you try to change the information of units or pipes in this Tree Mode, this message appears. Once you start your project from CAD Mode, you have to modify it and finish it in CAD Mode. In CAD Mode, you can only read the information at Tree Mode.

Caution: Once you click Tree Mode button and enter into the Tree Mode display, you have to click “Create Network ” button again to go back to CAD mode.

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3.

Press Schematic Diagram button to see this display. Check Additional refrigerant and Wiring design. If you want to go back to Tree Mode, you can press Tree button of the left part of initial window. Click either of these icons for seeing control wire, power line and pipe line.

CL: shows Communication Line PC: shows Power Line Communication PL shows Pipe Line

4. Click Drawing Export icon

. Input the name of exporting file and click Save. You can save your drawing file as a DXF file.

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Step 5. Write the report 1. Click Generate Report on the left part of initial window. This window appears. Select the sheet of reports to make. Then click OK. Finally press OK for viewing the above chosen report on excel sheet. You can see the final report at the Tree Mode description part of this User Guide.

Caution: You need MS Excel program installed output as a report form.

on your computer to get your

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3. Tips for using Multi V Model selection program   

Set Scale Assign one load for one indoor unit Draw orthogonal pipes

Set Scale in Multi V Model selection program When you open a CAD drawing from AUTO CAD, scale is changed. After you handle your CAD file on LATS, maginify it 10 times to be well fitted for proper scale.

Original CAD file

CAD file Exported from LATS

Tips for using Multi V Model selection program

Assign one load for one indoor unit in Multi V Model selection program When there is two indoor units for one heat load for a room, devide one heat load into two parts. Connect only one heat load for one indoor unit.

Wrong example

Right example

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Draw orthogonal pipes in Multi V Model selection program Click Grid On/Off icon from the initial window. Then an window appears for you to insert a gap value between grid. Inser the number and you can see the grid on your display.

Click Grid On/Off icon

Grid Display

Click Orthogonal icon from the initial window. When you move units or draw pipes, you can do your work in horizontal or vertical direction by activating Orthogonal function. You can use Orthogonal and Grid function simultaneously.

1. Click Orthogonal button in the Drawing toolbar. 2-1. During moving unit(s), You can move them o nly in horizontal or vertical direction. 2-2. During drawing pipes. You can draw them only in horizontal or vertical direction. 3. To deactivate Orthogonal function, Click Orthogonal button again.

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Click

Pan icon to pan CAD work window at an arbitrary direction.

1. Click Pan button in the Drawing toolbar. 2. Click and hold left-button of mouse in the CAD window. 3. Move your mouse point in the CAD window. 4. You can see CAD window moves to t he direction that a mouse point moves. 5. Release left-button of mouse. So you can see the moved view position of CAD window. 6. To deactivate Pan function, Click Pan button again, hit any key or click center/right-button of mo use. If you have a mouse with middle-button of wheel-button, you can pan CAD Work window.

1. Click middle-button or wheel-button of mouse i n the CAD Work window. 2. Move your mouse point in the CAD work window. 3. Release middle-button or wheel-button of mouse.

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4. Contact Information LATS program ownership PM Group, Air conditioner Lab, Digital Appliance Company, LG Electronics. 

Question and further information  Access this site and insert your question. Then the specific local engineers or managers for each region will contact you. http://www.lgeaircon.com/cac.cssupport.qna.qna.createQuestioner.laf

Lats-Multi v-Multi v Model Selection[20071204093730603]

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