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THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ 2.0 WITH EIM
68-0311—01 118
Wiring C7089U1006 Outdoor Sensor
CAUTION
Electrical Interference (Noise) Hazard.
Can cause erratic system operation.
Keep wiring at least one foot away from large inductive
loads such as motors, line starters, lighting ballasts and
large power distribution panels.
Use shielded cable to reduce interference when
rerouting is not possible.
IMPORTANT
Erratic temperature readings from a sensor can occur
as a result of any of the wiring practices described
below. Avoid these practices to assure correct opera-
tion. Use shielded cable to reduce interference if
rerouting sensor wiring is not possible.
— Be sure wires have a cable separate from the thermo-
stat cable.
— Do not route temperature sensor wiring with building
power wiring, next to control contactors or near light
dimming circuits, electric motors or welding
equipment.
— Avoid poor wiring connections.
— Avoid intermittent or missing building earth ground.
CAUTION
Electrical Shock Hazard.
Can cause electrical shock or equipment damage.
Disconnect power supply before connecting wiring.
Wiring must comply with applicable codes, ordinances and
regulations:
1. Wire C7089U1006 Outdoor Sensor to S1/S1 or S2/S2
terminals on the EIM. If leadwire provided is not long
enough (60 in.), run a cable to a hole at C7089U1006
location.
a. Using color-coded, 18-gauge thermostat wire is
recommended. For example of general wiring of
C7089U1006, see Fig. 239.
b. Pigtail wiring can be used.
2. Mount C7089U1006 in its mounting clip.
3. Plug wiring hole using nonhardening caulk or putty.
Fig. 239. Wire C7089U1006 Outdoor Sensor to the EIM.
1
2
2
1
USE APPROPRIATE MOUNTING MEANS FOR THE TYPE
OF STRUCTURE.
PLUG WIRING HOLE WITH NON-HARDENING CAULK
OR PUTTY.
C7089
WIRING HOLE
THROUGH
STRUCTURE
M31470