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INSTALLATION INSTRUCTIONS
CONTROL WIRING
The control circuit operates on 24VAC . Install manual humidifier control and blower activation relay as shown in Figure 8 . See Figure 8A for
wiring Humiditrac humidifier control .
If protection from over-humidification is desired, install optional high humidity limit switch at least 4 feet downstream of the dispersion tube .
FIGURE 8 – Wiring with Manual Humidifier Control
REMOVE WIRE
TYPICAL 24 VAC
"G" TO "G"
TERMINAL STRIP
THERMOSTAT
IN FURNACE
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.
FIGURE 8A – Wiring with
Humiditrac Humidifier Control
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.
(CONTINUED)
BLOWER ACTIVATION
RELAY
WHITE/YELLOW
WHITE/BLUE
CANISTER STEAM HUMIDIFIER
MANUAL
HUMIDIFIER
CONTROL
OUTDOOR
TEMPERATURE
SENSOR
OPTIONAL
HIGH HUMIDITY
LIMIT SWITCH
(OPTIONAL)
HIGH HUMIDITY
LIMIT SWITCH
90-1706
90-1726
11
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