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Fig. 21—Typical Wiring Diagrams (Fan Coil with Heat Pump)
UNIT 24 VAC (R)
STANDARD
SINGLE SPEED
HEAT PUMP
Yellow
Red
Blue
White
Brown
Green
Orange
Black
COOL 1 (Y1)
COOL 2 (Y2)
HEAT 1 (W1)
HEAT 2 (W2)
FAN (G)
RV-COOL (O)
RV-HEAT (O)
OR
FAN COILCOMFORT ZONE CENTER
G
C
R
Y
W2
O
R
C
L
A
E
Y
W2
O
W3
A93242
UNIT 24 VAC (R)
STANDARD
SINGLE SPEED
HEAT PUMP
Yellow
Red
Blue
White
Brown
Green
Orange
Black
COOL 1 (Y1)
COOL 2 (Y2)
HEAT 1 (W1)
HEAT 2 (W2)
FAN (G)
RV-COOL (O)
RV-HEAT (O)
OR
FAN COILCOMFORT ZONE SYSTEM
G
C
R
Y
W2
O
W2
R
C
L
B
W3
E
O
Y1
Y/Y2
A93243
UNIT 24 VAC (R)
C
2-SPEED
HEAT PUMP
(38YD)
Yellow
Red
Blue
White
Brown
Green
Orange
Black
COOL 1 (Y1)
COOL 2 (Y2)
HEAT 1 (W1)
HEAT 2 (W2)
FAN (G)
RV-COOL (O)
RV-HEAT (O)
OR
FAN COILCOMFORT ZONE SYSTEM
G
E
L
Y1
L
Y2
R
H
R1
R
C
Y
R1 = Relay DPST, Pilot Duty,
24-v coil (HN61KK324) or Equivalent.
H = Humidistat, opens on humidity
rise (HL38MG026)
Latent Capacity Control (LCC)
C
W2
W3
O
W3
O
W2
A94042
UNIT 24 VAC (R)
2-SPEED
HEAT PUMP
(38YD)
Yellow
Red
Blue
White
Brown
Green
Orange
Black
COOL 1 (Y1)
COOL 2 (Y2)
HEAT 1 (W1)
HEAT 2 (W2)
FAN (G)
RV-COOL (O)
RV-HEAT (O)
OR
FAN COILCOMFORT ZONE SYSTEM
C
R
Y2
O
W3
G
R
C
D
E
W3
W2
L
Y1
W2
O
L
Y
A94043
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