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Choose Correct Wiring Diagram - Honeywell DH90 Installation Manual

Whole house dehumidifier with fresh air ventilation
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DH90 Dehumidifier • For HVAC Installer Only
6.1 Choose the correct wiring diagram based on HVAC system
HVAC
R
C
W
Y
G
R
R
W
Y
G
C
System
Heat
AM
Fan
Tue
Room
Wake
DST
Auto
Figure 7: Single transformer, conventional system.
Figure 8: Dual transformer, conventional system.
HVAC
HEATING
COOLING
R
C
W
R
C
Y
G
R
R
W
Y
G
C
System
Heat
AM
Fan
Tue
Room
Wake
DST
Auto

W8150A
G
F
R
C
C
C
C
H
W
G
T
M19994
W8150A
G
F
R
C
C
C
C
H
W
G
T
M19995A
HVAC
R
C
W
W
Y
Y
G
1
2
1
2
R
R
C
W
W
Y
Y
G
C
1
2
1
2
System
Heat
AM
Fan
Tue
Room
Wake
DST
Auto
Figure 9: Multi-stage conventional system.
Figure 10: Wiring heat pump without emergency heat.
HVAC
R
C
Y
G
O
NOTE:
R
R
W
Y
G O/B
C
REMOVE FACTORY
System
INSTALLED JUMPER
Heat
AM
Fan
Tue
Room
BETWEEN Cc AND C
Wake
DST
Auto
H
ON W8150.
W8150A
G
F
R
C
C
C
C
H
W
G
T
M19996
W8150A
G
F
R
C
C
C
C
H
W
G
T
M19997A

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