Page 3 of 4
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C
Extending Wiring to a Two-Stage Condenser (Grounded Commons)
D
Extending Wiring to a Two-Stage Condenser (Two Transformers)
R
C
Outdoor Unit
Y1
Second
Stage
First
Stage
Control
Board
Y2
C
R
Transformer
L
N
Transformer
L
N
Indoor Unit
W
Heat
G
Fan
Y1
Y2
Sender
Purple
Model 3000
FAST-STAT
Receiver
Black
Green (Not Used)
Red (Not Used)
Red
Yellow
Green (Not Used)
Red (Not Used)
Red (Not Used)
White
Purple
Yellow
White
Condenser
Cable
Supply and install
24V transformer
W
R
Thermostat
Y2
G
Y1
Note:
Unused wires should be taped back and
electrically isolated from other wires.
Note:
For this system a Model 1000 can be used.
R
C
Outdoor Unit
Y1
Second
Stage
First
Stage
Control
Board
Y2
C
R
Transformer
L
N
Indoor Unit
W
Heat
G
Fan
Y1
Y2
Sender
Purple
Model 3000
FAST-STAT
Receiver
Black
Green (Not Used)
Red (Not Used)
Red
Yellow
Green (Not Used)
Red (Not Used)
Red (Not Used)
White
Purple
Yellow
White
Condenser
Cable
W
R
Thermostat
Y2
G
Y1
Note:
Unused wires should be taped back and
electrically isolated from other wires.
Note:
For this system a Model 1000 can be used.