ConTRol wIRInG
The control circuit operates on 24VAC . Install manual humidifier control S1-HUSTATMAN4655 and blower activation relay as shown in
figure 7
.
See
figure 7a
for wiring automatic humidifier control S1-HUSTATAUTO56 .
If protection from over-humidification is desired, install optional high humidity limit switch at least 4 feet downstream of the dispersion tube .
InSTallaTIon InSTRUCTIonS
(ConTInUeD)
MANUAL
HUMIDIFIER
CONTROL
TYPICAL 24 VAC
TERMINAL STRIP
IN FURNACE
THERMOSTAT
BLOWER ACTIVATION
RELAY
REMOVE WIRE
“G” TO “G”
HIGH HUMIDITY
LIMIT SWITCH
(OPTIONAL)
NOTES:
1. 18AWG WIRE IS ACCEPTABLE FOR 24V INSTALLATIONS.
2. “FAN PACK” TERMINALS PROVIDE 24 VAC ON CALL FOR HUMIDITY AND REMAIN ENERGIZED FOR
TWO MINUTES AFTER CALL IS SATISFIED.
BLUE (NC)
ORANGE (NO)
YELLOW (C)
WHITE/YELLOW
WHITE/BLUE
FAN P
ACK
HUMIDIS
TAT
CANISTER STEAM HUMIDIFIER
OPTIONAL
HIGH HUMIDITY
LIMIT SWITCH
OUTDOOR
TEMPERATURE
SENSOR
24 VAC SOURCE
OR FURNACE ACCESSORY
TERMINALS
NOTES:
1. Set Power/Bypass switch to POWER.
2. Set Humidifier Pad Change indicator to OFF.
3. Use 24 VAC transformer if furnace
accessory terminals are 120 V.
HUMIDIS
TAT
fIGURe 7 – wiring with Manual Humidifier Control
fIGURe 7a – wiring with automatic
Humidifier Control
90-1706
90-1726
9
