Aprilaire 62 Safety And Installation Instructions Manual page 9

• Wire "W" on the Model 60 to "W" on the furnace terminal strip.
• Replace cover and knob.
Figure K – Model 60 Wiring for Model 400, 500, 600
and 700* Series (Gray Housing) Humidifiers
ADHC TERMINAL STRIP
POWER INPUTS
R C A B ODT
NORTH, EAST
OR WEST SIDE
OF HOME
OUTDOOR
TEMPERATURE
SENSOR FOR
AUTOMATIC
MODE
ABOVE EXPECTED
SNOW LINE
R
R
C
C
G
G
Y
Y
W
W
FURNACE
THERMOSTAT
OR ZONE PANEL
EQUIPMENT
TERMINALS
CAUTION
Model 700 series humidifiers with almond housings (produced
prior to October 2007) wired per Figure K will experience
circuit board damage rendering the unit inoperable. See
Figure L for proper wiring diagram.
* See note on page 18.
OUTPUTS
W G H H Gf
CONNECT
CONNECT
DRAIN LINE
TO HOT WATER
HERE
SUPPLY
120 VAC
CONTINUOUSLY POWERED
24 VAC TRANSFORMER
PROVIDED WITH HUMIDIFIER
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STEP 7: Model 62 wiring for Model 800 Series Steam
Humidifier and Model 60 Wiring for Model 700* Series
(Almond Housing) Humidifiers – See Figure L
120/240 volts may cause serious injury from electrical
shock. Disconnect electrical power to the furnace and
humidifier before starting installation.
Strip the wires used for all humidifier control terminal
connections 1/4 inch.
NOTES:
• The Model 62 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 62 must be calling for humidity.
WIRING DESCRIPTION:
• Wire "H" terminals on the Model 62 to the "Humidifier"
terminals on the Model 800 control board.
• Wire "R" and "C" on the Model 62 to "R" and "C" on the
furnace terminal strip.
90-1510
• Remove the thermostat "G" wire from the furnace terminal
strip and wire it to "G" on the Model 62 control.
• Wire "Gf" on the Model 62 to "G" on the furnace terminal
strip.
• Wire "W" on the Model 62 to "W" on the furnace terminal
strip.
• Replace cover and knob.
WARNING
17