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AHU + Electric Heat (emergency heat) with Heat Pump Configuration (continued)
1 Stage Thermostat, 1 Stage AHU
AHU Control Unit (ACU)
Thermostat
Input
Y
Y1
Y2
G
G
W1
W1
W2
W2
D
D
O/B
O/B
R
R
C
C
DIP SW1
1
2
3
4
2 Stage Thermostat, 1 Stage AHU
AHU Control Unit (ACU)
Thermostat
Input
Y1
Y1
Y2
Y2
G
G
W1
W1
W2
W2
D
D
O/B
O/B
R
R
C
C
DIP SW1
1
2
3
4
Indoor unit
Output
Y1
Y
Y2
G
G
W1
W1
W2
W2
D
D
O/B
O/B
R
C
on
off
5
6
7
8
Indoor unit
Output
Y1
Y
Y2
G
G
W1
W1
W2
W2
D
D
O/B
O/B
R
C
on
off
5
6
7
8
•
•
•
•
•
•
•
•
•
English
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