Use and Care Manual

HE240, HE280 HUMIDIFIER
11 69-2685ES—07
5. Secure the wallplate. Secure the wallplate to the duct with sheet metal screws (provided).
Fi
g. 16.
6. Run wires through the back plate. Run wires through the top or bottom channel on the back plate when
ductmounted. If installing like a thermostat on a wall, run the wires through the back
.
Fi
g. 17.
WIRING
CAUTION
Hazardous Voltage.
Can cause personal injury or equipment damage.
Disconnect power supply before installing or servicing equipment.
IMPORTANT
All wiring must comply with applicable local code, ordinances and regulations.
Wire the humidifier solenoid valve, humidistat and transformer. See Fig. 18.
Fig. 18. Wiring the controls and the HE240.
M34582B
M34610B
RUN WIRES
THROUGH THE
TOP OR BOTTO M
CHANN EL
C
R
U
U
S
S
M39013
C
R
U
U
S
S
24 VAC (CONSTANT)
OUTDOOR SENSOR
1
TRANSFORMER
WHITE WIRE
RED WIRE
5
HUMIDIFIER
SOLENOID
VALVE
RED WIRE
WHITE
WIRE
WHITE WIRE
RED WIRE
RED WIRE
RED WIRE
1
WIRE OUTDOOR SENSOR TO THE S TERMINALS.
USE A SHORT WIRE TO CONNECT R TO THE UPPER
U AS SHOWN.
2
2
WHITE
WIRE