FM-200™ ENGINEERED SYSTEMS DESIGN & FLOW C ALCULATION M ANUAL
26. PRESSURE ENTERING TEE SEC ## TO ## IS LESS THAN FM LIMIT OF 67.5% OF AVERAGE CYLINDER PRESSURE. TEE BRANCH IS TOO FAR FROM CYLINDER MANIFOLD. REDESIGN TO REDUCE PRESSURE DROP FROM MANIFOLD TO TEE INLET (for systems using Style G nozzles or a combination of Style F & Style G nozzles). 27. PRESSURE ENTERING TEE SEC ## TO ## IS LESS THAN UL LIMIT OF 63% AND FM LIMIT OF 67.5% OF AVERAGE CYLINDER PRESSURE. TEE BRANCH IS TOO FAR FROM CYLINDER MANIFOLD. REDESIGN TO REDUCE PRESSURE DROP FROM MANIFOLD TO TEE INLET (for systems using only Style F nozzles; no Style G nozzles). 28. SEC ## TO ## BULLHEAD TEE MINOR FLOW BRANCH CARRIES ## PERCENT OF FLOW. MINIMUM BRANCH FLOW FROM BULLHEAD TEE IS 30 PERCENT. 29. SIDE OUTLET TEE BRANCH CARRIES ## PERCENT FLOW. MAXIMUM SIDE OUTLET BRANCH FLOW IS 35 PERCENT. 30. SEC ## TO ## SIDE OUTLET TEE BRANCH CARRIES ## PERCENT OF FLOW. MAXIMUM SIDE OUTLET BRANCH FLOW IS 10 PERCENT. 31. NOZZLE ## AREA EQUALS ## % FEED PIPE AREA (LIMIT 1/4 NPT=75%). 32. NOZZLE ## AREA EQUALS ## % FEED PIPE AREA (LIMIT 85%). 33. NOZZLE ## DISCHARGES ## % OF MAXIMUM FEED PIPE FLOW WHICH IS ABOVE MAXIMUM OF 65%. 34. NOZZLE PRESSURE FOR ### IS BELOW 125 PSIA (7.60 BAR). 35. MAXIMUM DIFFERENCE IN LIQUID ARRIVAL TIME IS ## (LIMIT IS 1 SECOND.) 36. MAXIMUM DIFFERENCE IN LIQUID RUN-OUT TIME IS ## (LIMIT IS 2 SECONDS.) 37. DISCHARGE TIME IS OUTSIDE LISTED AND APPROVED RANGE OF 5 TO 10 SECONDS. 38. PERCENT AGENT IN PIPE IS ###. THIS IS OVER MAXIMUM OF 75 PERCENT PERMITTED. 39. PERCENT AGENT IN PIPE IS ##.##%. THIS MEETS UL & ULC LISTING CRITERIA OF 75% OR LESS BUT EXCEEDS FM APPROVAL LIMIT OF 70%. 40. FLOW RATE IN SEC ## - ## IS LESS THAN ##.# MINIMUM REQUIRED FOR PIPE SIZE. 41. LARGEST PERMITTED NOZZLE SECTION IS 2 INCH (50 MM). SECTION ## - ## IS LARGER THAN 2 INCH (50 MM). 42. FIXED ORIFICE SYSTEM FAILS TO CONVERGE WITHIN ±3.5%. CONVERGENCE WAS WITHIN ± ### PERCENT. SYSTEM MUST BE REDESIGNED OR INSTALLATION MUST BE SUBJECT TO A FULL DISCHARGE TEST TO PROVE PROPER AGENT CONCENTRATION AND DISTRIBUTION.
