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Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage, personal injury or death.
Thermostat Connection—WAHME Heat Pump Unit with Optional Heat Kits of 10kW and Below
Heat Pump
C
W2
Y
R
O
OR Y
BU W
Outdoor Thermostat (Optional)
Close On Temperature Fall
NOTES:
EHR—Emergency heat relay (optional)
OT—Outdoor thermostat (optional)
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
Thermostat Connection—WAHME Heat Pump Unit with Optional Heat Kits of 15kW and Above
Heat Pump
W2
C
Y
O
OR Y
BU W
See
Note 1
Outdoor Thermostats (Optional)
Close On Temperature Fall
NOTES:
EHR—Emergency heat relay (optional)
OT—Outdoor thermostat (optional)
14
Goodman 6 Long
Room Thermostat
W2
Y
O
C
R
# 18 Gauge
5 Wire
Y
R
BU
Y
OR
W
BU
Room Thermostat
R
Y
O
C
R
# 18 Gauge
5 Wire
Y
OR
R
BU
Y
OR
W
OR
BU
OT-1
OT-2
WARNING
HIGH VOLTAGE!
# 18 Gauge 7 Wire
G
R
E
BR
W
R
G
W
BR
W
See
BU BU
Note 3
Y
OR
# 18 Gauge 6 Wire Needed When Outdoor Thermostat Is Used.
1. Outdoor thermostat (OT-1) should be the first to close and the
last to open.
2. Jumper W1 and W2 together if OT-2 is not used.
3. Remove this wire when using an outdoor thermostat.
#18 Gauge 7 Wire
W2
G
R
E
BR
G
R
G
W
See
Note 3
W
W
R
EHR
BU
Y
OR
OR
BR
# 18 Gauge 7 Wire Needed When
2 Outdoor Thermostats (OT) Are Used.
1. Outdoor thermostat (OT-1) should be the first to close and the
last to open.
2. Jumper W1 and W2 together if OT-2 is not used.
3. Remove this wire when using an outdoor thermostat.
Unit
C
R
G
W1
W2
Y1
Y2
Y
O
TB
.
Unit
C
R
R
G
W1
W
W2
See
Note 2
Y1
Y2
O
TB
Color Codes
R
Red
Y
Yellow
BU
Blue
BR
Brown
OR
Orange
W
White
G
Green
Color Codes
R
Red
Y
Yellow
BU
Blue
BR
Brown
OR
Orange
W
White
G
Green
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