Installation Guide

.0%&-4.%56r.%56
Page 4
INSTALL THE DAMPER
OUTSIDE AIR
TO CENTRAL SYSTEM
RETURN AIR OR INTERIOR
WALL REGISTER
DAMPER FLAP (Install in
vertical position shown.)
AIR FLOW AIR FLOW
SET SCREW
*OTUBMMUIFEBNQFSBTTIPXO.BLFTVSFEBNQFSGMBQJTJOBWFSUJ-
cal position when closed and power is off. The set screw can be
used to adjust the damper opening - thereby balancing the inside
and outside air pressure when the range hood exhausts at high
speed.
PRESSURE SWITCH
OPERATION
The pressure switch is designed to operate when the static
QSFTTVSFJODSFBTFTUPu1TPSNPSF*UNBZOPUPQFSBUFBUMPX
speeds since the pressure is below this limit.
MULTIPLE DAMPERS
.PSFUIBOPOFEBNQFSNBZCFSFRVJSFEUPCBMBODFUIFTZTUFN
*GNPSFUIBOPOFJTSFRVJSFEVTF.%56PS.%56BOEUIFO
VTFUIF.%PS.%EBNQFSTBTBEEJUJPOBMEBNQFST
INSTALLATION OF
PRESSURE SWITCH AND
PROBE
For the probe & pressure switch to work effectively the roof or
wall cap must have a spring loaded damper. The following Broan
products are recommended:
ROOF CAP MODELS:
437 – High capacity up to 1200 cfm
m'PSuYuBOEVQUPuSPVOE
.m'PSuSPVOE
WALL CAP MODELS:
8$m'PSuYuEVDU
m'PSuYuEVDU
m'PSuSPVOEEVDU
#-m'PSuSPVOEEVDU
'"m'PSuSPVOEEVDU
m'PSuSPVOEEVDU
m'PSuSPVOEEVDU