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ALTERNATE WmRmNG METHODS
The aiternate wiring methods are for your humidifier
to operate oniy when the furnace biower is on and
the humidbtat is caning for humidity. The method you
sebct win depend on your furnace controi system.
Find the type of system you have and follow that
method. Aiso, if the method sebcted requires a said
switch or reiay, this item must be purchased separateiy.
Amternate Method - 1
For ANY Forced Air Furnace
Humidifier runs oniy when furnace biower is running
and the humidistat cans for addiflonai humidity. The
humidifier must be turned off manually during cooling
season (Fig.15).
Sail
Switch
White
2O
To Humidifier
Volt
Humidistat
Fig, 15
Install Sail Switch In Return Air Plenum (use normally
open contacts). Purchase this accessory separately
if needed. Available from Sears Product Services:
Phone: 1-800-366-7278 Specify Division 42 PLS 042
Part No. 9114
Alternate Method - 2
Any furnace with single speed, 120 VAO Blower
Humidifier runs only when furnace blower is running
and the humidistat calls for additional humidity. It's not
necessary to turn humidifier OFF during the summer
(Fig. 16).
White
<
TO HUMIDIFIER
©
FAN CONTROL I
Humidistat
NEUTRAL
(White)
120V
FAN MOTOR
Fig, 16
Alternate Method - 3
Any furnace/air conditioning system with
multi-speed furnace blower
Humidifier runs only when furnace blower is running
and the humidistat calls for additional humidity.
Humidifier is automatically "off" during cooling season.
With the thermostat in the "FAN ON" position, the
humidifier wiii not operate (Fig. 17).
To "C" on To "G" on
Transformer _ Low Voltage _ Transformer
Relay Pane! _ Relay Pane!
I _ I SPDT Relay
I _ ..L I I-- (Sears Stock
_No. 42-9248)
Brown _ I._ _ To Low
Red Motor Lead
- TO I W,re
HUMIDIFIER Humidistat NEUTRAL!20 VOLT_:>
<::_White
Fig, 17
Alternate Method - 4
Sears "15" and "20" furnace with etectdcM
comfort center
Humidifier runs only when the furnace blower is run-
ning and the humidistat call for additional humidity.
The humidifier must be turned off manually during
the cooling season (Fig. 18).
White
TO HUMiDiFiER
B!ack
Humidistat 15 _q G
®
®
-<-Wiring
Board
Factory Connections Not Shown
Fig, 18
NOTE: The humidifier and humidistat have a green
ground wire which must be connected to ground
(refer to Page 8, Step 8 of Humidistat).