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Wiring the Humidistat
This humidity control is wired the same way a manual humidistat (H8908) is wired. The
only difference is that you also wire in power (24 VAC) and an outdoor sensor.
TERMINAL DESIGNATION
C 24 VAC POWER FROM EQUIPMENT
R 24 VAC POWER FROM EQUIPMENT
U HUMIDIFIER/DEHUMIDIFIER
U HUMIDIFIER/DEHUMIDIFIER
S OUTDOOR SENSOR
S OUTDOOR SENSOR
NOTES:
C AND R MUST BE CONSTANT 24VAC! RECOMMENDED TO WIRE TO
FURNACE/AIR HANDLER CONTROL BOARD.
DO NOT WIRE C AND R TO HUMIDIFIER TRANSFORMER!
24 VAC (CONSTANT)
TO HUMIDIFIER
OR DEHUMIDIFIER
OUTDOOR
TEMPERATURE
SENSOR
7
C
R
U
U
S
S
M34569
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