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441 06 1003 02 (10/2001)
Figure 8
WALL
THERMOSTAT
R
G
4
3
2
1
ISOLATION
RELAY
ELECTRONIC
FAN CONTROL
FURNACE #1
ELECTRONIC
FAN CONTROL
FURNACE #2
C
Y
A/C
CONDENSERS
W2
Y2
Y1
C
Y
Connect Z1 To Z1
Connect Z2 To Z2
WALL
THERMOSTAT
R
G
4
3
2
1
ISOLATION
RELAY
ELECTRONIC
FAN CONTROL
FURNACE #1
Thermostat Wiring For
Single S tage Heating
And Cooling.
W
Y
A/C
CONDENSER
C
Y
Connect Z1 To Z1
Connect Z2 To Z2
ELECTRONIC
FAN CONTROL
FURNACE #2
W1
Thermostat Wiring For
Two Stage Heating &
Cooling
25--23--83