Install Instructions

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Sender
Purple
Black
Red
Red (Not Used)
Green
Green
White
Red (Not Used)
Red (Not Used)
Yellow
Purple
Yellow
White
Condenser
Cable
24VAC
Relay
Heat Pump
W
Defrost
Y1Y2
R
Control Board
C
Rev.
Valve
Second
Stage
First
Stage
O/B
Indoor Unit
W
Heat
GY1
R
24V TransformerFan
C
External Transformer
24V Transformer
Y2
Receiver
Model 3000
W
R
Thermostat
Y2
G
Y1
Thermostat
Cable
O/B
Note: Unused wires should be taped back and electrically
isolated from other wires.
Note: If the indoor unit does not have ‘Y1’ or ‘Y2’ terminals, the
Sender should be connected directly to the thermostat cable
instead.
Note: An external 24VAC transformer and 24VAC relay will
have to be installed.
Upgrading from a Single-Stage Air Conditioner to a Two-Stage Heat Pump
F
H
Fan Center Heating System
Sender
Yellow
Green
Purple
Red
Red
Red
White
Green
Yellow
Red
Purple
Black
White
Thermostat
Cable
W
R
Thermostat
Y G
24VAC
Relay
Note: If the installation has additional wires
(Y2, O/B, H, C), they can be connected directly
to the equipment terminals provided they are
powered by the Fan Center’s transformer.
Note: A 24VAC relay will have to be installed.
G
Fan
Y
R C
24V Transformer
W
Heat
R C
24V Transformer
Humid.
H
Receiver
Model 3000
To Air
Conditioner
Extending Wiring with a Fan Center
E