Install Optional Sensors - Honeywell PRESTIGE THX9321 System Installation Manual

Install optional sensors

6
[If no sensors are used, skip to Section 7.]
To install outdoor air sensor
M28491
To install indoor air sensor
To install discharge/return air sensor
69-2490_B.indd 7
THX9321/9421 Prestige
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.
1 Remove the wallplate and mount it 4
to 6 feet above the floor on an interior
wall. Drill 3/16-inch holes for drywall,
7/32-inch for plaster.
2 Attach sensor securely to wallplate as
shown.
M32936
1 Install the sensor between the IAQ
equipment and the heating/cooling
equipment. The sensors must be in air
that is mixed well (away from a-coil/
heat exchanger).
M32995
2 Drill 1/4-inch hole for the sensor
probe and mount it to the ductwork
with enclosed screws.
3 Connect wires to S1 or S2 terminals at
the EIM.
7
IAQ and RF EIM
®
69-2490—03
7/13/2011 1:41:52 PM