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Spring Air Systems
REV LOW
Engineering Manual Revision 2.0 -021902
22
Typical
REV LOW
Hood Schematic with SFA-IGO
Figure 25
REV LOW
Hood Controllers
Spring Air Systems Inc. manufacturers a
REV LOW
Hood Controller model RPD-P
(For use with gas or electric duct
heaters) for complete single switch
operating of the exhaust/supply system.
The operator rotates the selector switch
to the occupied position and the exhaust
and supply fans energize, the fresh air
damper opens, and the air conditioning
unit economizers open (optional). In
addition, the panels may be interlocked
to the shunt trip, surface fire suppression
system or building management system.
Spring Air Systems can also supply the
motor starters from stock.
RPD11 Controllers
Figure
26
SPRING AIR SYSTEMS
MODEL DD-B-F 6.0/3.92
AND INSTALLED PER NFPA-96
BELOW ROOF JOIST 24" TYPICAL
FROM BOTTOM OF CURB TO
EXHAUST DUCT ENCLOSURE
HANGER RODS
EXHAUST DUCT COLLAR C/W
1" PERIMETER FLANGE AND
ARRANGEMENT "D" FIRE DAMPER
APPLIANCES
EXHAUST DUCT SUPPLIED
EXHAUST FAN ROOF CURB
3/4 HP MOTOR
C/W 120V/1/60
EXHAUST FAN
MODEL PNU120-RG
950 CFM @ 1.75" W.C.
24.00
EXTERNALLY INSULATED
10"X 24" DUCT DROP FROM SFA10
10" DIA FLEX DUCT
FINISHED CEILING
24" X 24" DIFFUSER
FROM HEATED MAKEUP
375 CFM EACH
10'0" MINIMUM
SPRING AIR SYSTEMS MAKEUP AIR UNIT
MODEL SFA10-IGOD
750 CFM @ 0.50" W.C.
0.33 HP 120V/1/60
FINISHED FLOOR
10" X 8" - 950 CFM @ 1.25" W.C.
10"
4"
6.5"
SUMMER/WINTER
OCCUPIED / UNOCCUPIED
MODEL RPD20
SPRING AIR SYSTEMS INC.
EXHAUST
SUPPLY
OCCUPIED/UNOCCUPIED
SUMMER/WINTER
MODEL RPD11
EXHAUST
SUPPLY