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G
Y
W
C
R
THERMOSTAT
120 VAC
R
C
W
Y
G
FURNACE
OUTDOOR
TEMPERATURE
SENSOR FOR
AUTOMATIC
MODE
NORTH, EAST
OR WEST SIDE
OF HOME
ABOVE EXPECTED
SNOW LINE
CONTINUOUSLY POWERED
24 VAC TRANSFORMER
PROVIDED WITH HUMIDIFIER
CONNECT
TO HOT WATER
SUPPLY
CONNECT
DRAIN LINE
HERE
OUTPUTSINPUTSPOWER
GW
CRHHODT GfA
ADHC TERMINAL STRIP
B
1514
Figure K – Model 60 Wiring for Model 400, 500, 600
and 700 Series Humidifiers
90-1510
STEP 10: Model 60 Wiring for Model 400, 500, 600 and
700 Series Humidifiers – See Figure K
Strip the wires used for all Humidifier Control terminal
connections 1/4 inch.
NOTES:
• The Model 60 must be continuously powered from “R” and
“C” on the furnace to function properly.
• The minimum VA required is 2.0 VA.
• In order for the humidifier to operate, the HVAC blower must
be running and the Model 60 must be calling for humidity.
WIRING DESCRIPTION:
• Wire external 24 VAC transformer into a constant power source
other than the heating, ventilating, air conditioning equipment
(HVAC) blower circuit. The transformer can be powered off the
120 VAC line at the junction box before it enters the HVAC
equipment. Connect the 24 volt side of the transformer to one
of the “H” terminals on the humidifier control and to one of the
humidifier solenoid valve wires. Connect the other solenoid
valve wire to the other “H” terminal.
• Wire “R” and “C” on the Model 60 to “R” and “C” on the
furnace terminal strip.
• Remove the thermostat “G” wire from the furnace terminal
strip and wire it to “G” on the Model 60 control.
• Wire “Gf” on the Model 60 to “G” on the furnace terminal
strip.
• Wire “W” on the Model 60 to “W” on the furnace terminal
strip.
• Replace cover and knob.
WARNING
120 volts may cause serious injury from electrical
shock. Disconnect electrical power to the furnace
before starting installation.