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Integrated Fire Protection System
B
Mechanical Section - Non Interlock Preaction System - Pneumatic Release
FM-076A-0-41C
Figure 1 - Detailed system trim schematic
Typical non interlock preaction system with pneumatic release
(3" (80 mm) system shown)
D1
A1
D3
B13
To Air Supply
System Trim
FIELD CONNECTION
TO WATER SUPPLY
(on both sides)
TO RELEASE SYSTEM TRIM
AND OPTIONAL ACCELERATOR
(when used)
B11
B5
1
F4
F5
B3
FIELD CONNECTION
TO OPEN DRAIN
(on both sides)
C1
B6
CONTRACTOR'S
HYDROSTATIC TEST PORT
(water supply side)
B1
FIELD CONNECTION TO
SPRINKLER PIPING NETWORK
B4
B8
B10
F3
To Air Supply System Trim
E4
D2
C2
B12
B7
2
B9
B2
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Base
(shown without enclosure)
FM-061H-0-102C
Trim components
A1 Deluge valve
B1 Priming valve (N.O.)
B2 Strainer
B3 1/16" (1.6 mm) Restricted orifice
B4 Spring loaded check valve
B5 Alarm test valve (N.C.)
B6 Flow test valve (N.C.)
B7 Drip check valve (N.O.)
B8 Drain check valve
B9 PORV (pressure operated relief valve)
B10 Manual emergency release valve (N.C.) (shown in
closed position)
B11 Priming pressure water gauge & valve (N.O.)
B12 Water supply pressure gauge & valve (N.O.)
B13 Clapper check valve
C1 Alarm pressure switch (PS10-1)
C2 ¾"-NPT (20 mm) connection to optional water motor
gong (strainer to be supplied by contractor)
D1 Main water supply valve (N.O.)
D2 Riser check valve
D3 Main drain valve (N.C.)
E4 Air pressure supervisory switch (PS40-1)
F3 Pneumatic actuator
F4 Pneumatic actuator pressure gauge & valve (N.O.)
F5 Float check assembly
