Install Instructions

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R C
Air Conditioner
Y1
Second
Stage
First
Stage
Control
Board
Y2
Purple
Black
Red
Yellow
Green
Purple
Yellow
Green
Condenser
Cable
Sender
Note: If the outdoor unit does not have an ‘R’ terminal, the
Model 1000 is not required. The indoor unit’s ‘Y1’ and ‘Y2’ can
connect directly to the outdoor unit through the condenser
cable. The commons are grounded as shown.
Note: If the indoor unit does not have ‘Y1’ or ‘Y2’ terminals, the
Sender should be connected directly to the thermostat cable
instead.
Receiver
Model
1000
Indoor Unit
W
Heat
G
Fan
Y2 Y1
W
R
Thermostat
Y2 Y1
G
C
R
24V Transformer
Thermostat
Cable
R C
Air Conditioner
Second
Stage
First
Stage
Control
Board
Y2 Y1
Indoor Unit
W
Heat
G
Fan
Y2 Y1
Purple
Black
Red
Yellow
Green
Purple
Yellow
Green
Condenser
Cable
W
R
Thermostat
Y2 Y1
G
Sender
C
R
24V Transformer
Note: If the outdoor unit does not have an ‘R’ terminal, the
Receiver’s red wire should be connected directly to the
transformer instead.
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 will have to be installed.
Thermostat
Cable
Receiver
Model
1000
External Transformer
24V Transformer
Upgrading to a Two-Stage Air Conditioner (Grounded Commons)
D
Upgrading to a Two-Stage Air Conditioner
C