69-0896—1
2
C7089 OUTDOOR SENSOR
Fig. 1. Typical locations for outdoor sensor.
Wiring
CAUTION
Keep wiring at least one foot away from large
inductive loads such as motors, line starters,
lightning ballasts, and large power distribution
panels. Failure to follow these wiring practices can
introduce electrical interference (noise), which can
cause erratic system operation. Use shielded cable
to reduce interference when rerouting is not
possible. Ground the shielded cable to the GND
terminal on the W8900.
IMPORTANT
Erratic temperature readings from a sensor can
occur as a result of any of the wiring practices
described below. These practices must be
avoided to assure proper operation. Use shielded
cable to reduce interference when rerouting of
sensor wiring is not possible.
a. Do not route temperature sensor wiring with
building power wiring, next to control
contactors or near light dimming circuits,
electric motors or welding equipment.
b. Avoid poor wiring connections.
c. Avoid intermittent or missing building earth
ground.
CAUTION
Disconnect the power supply before connecting
the wiring to prevent electrical shock or equipment
damage.
Wiring must comply with applicable codes, ordinances and
regulations.
1
Wire the C7089 Outdoor Sensor to the terminals
marked OUT on the W8900 Remote Module. If the
leadwire provided with the C7089 is not long
enough, run cable to a hole at the selected C7089
location. Color-coded, 18-gauge thermostat wire is
recommended. For an example of general wiring of
the C7089, see Fig. 2. Pigtail wiring can be used.
2
Mount the C7089 in its mounting clip.
3
Plug wiring hole using nonhardening caulk or putty.
M7514
Fig. 2. Wiring diagram for the C7089 Outdoor Sensor
to the W8900 Remote Module.
M4457
1
2
3
2
1
USE APPROPRIATE MOUNTING MEANS FOR THE TYPE
OF STRUCTURE.
PLUG WIRING HOLE WITH NONHARDENING CAULK OR PUTTY.
IF SHIELDED CABLE IS REQUIRED, GROUND TO GND TERMINAL
ON W8900.
C7089
WIRING HOLE
THROUGH
STRUCTURE
3
OUT
OUT
LED
GND
W8900
