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T
OTAL
P
AC
®
3
D
Integrated Fire Protection System
Air Supply - Preaction System
FM-076A-0-86C
Figure 5 - Air supply Style "D"
Air supply connection for external air supply
1
TO SPRINKLER RISER
E4
(plugged with SureFire or
non interlock preaction trim)
FM-061H-0-121A
CONTRACTOR'S
HYDROSTATIC TEST PORT
(system side)
E16
E3
TO OPTIONAL ACCELERATOR
(plugged when not used)
Contractor external air
or Nitrogen connection
E6
3
TO PNEUMATIC
ACTUATOR
(plugged when
not used)
Warning:
The external air supply must be restricted to insure that it cannot replace air as fast as it escapes when a releasing
device or automatic sprinkler operates. Refer to table 4 or table 5 for pressure settings.
Air style components
E3 System air pressure gauge & valve (N.O.)
E4 Air pressure supervisory switch (PS40-1)
E6 Air shut-off valve (N.O.)
E16 Swing check valve
