Honeywell Prestige THX9321 System Installation Manual page 7

Install optional sensors
[If no sensors are used, skip to Section 7.]
THX9321/9421 Prestige _ IAQ and RF ElM
To install outdoor air sensor
1 Mount the sensor on a vertical
exterior wall, at least 6 inches below
any overhang. Choose a location
protected from direct sunlight.
2 Place sensor securely in bracket,
facing away from wall.
M2_4_,
To install indoor air sensor
1 Remove the waltptate and mount it 4
to 6 feet above the floor on an interior
watt. Drill 3/16=inch holes for drywall,
7/32=inch for plaster.
2 Attach sensor securely to watlplate as
shown.
M32936
To install discharge/return air sensor
1 Instalt the sensor between the IAQ
equipment and the heating/cooling
equipment. The sensors must be in air
that is mixed well (away from a=coiV
heat exchanger).
2 Drill 1/4=inch hole for the sensor
probe and mount it to the ductwork
with enclosed screws.
Connect wires to Sl or S2 terminals at
the ElM.
Z 69-2490--03