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7
Gas Fan-Limit
Limit
Fan
L406R
Wood
Fan-Limit
L406R
Oil Operator
Fan-Limit
4X4 Junction
Box Gas Furnace
4X4 Junction
Box Gas Furnace
Blue
Black
Red
White
White
Orange
Isolating
Relay
To Gas Valve
24V Transformer
24V
Gas Valve
Fan
Motor
Damper
Motor
Gas
Stat.
Wood
Stat.
WIRING DIAGRAM FOR ADD - ON TO GAS FURNACE ONLY
NOTE:
Remove existing thermostat wires.
Hook these wires to terminals.
W & R on Isolating relay.
Run a thermostat wire from TH & TH on Gas Valve
S-150 Summeraire ADD - ON Furnace