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Installation Guide
Wiring
Wiring guide — conventional and heat pump systems
2H/1C Heat
Pump System
TH2210DV/TH1210DV
B
Changeover valve energized in
heating [5]
O
Changeover valve energized in
cooling [5]
G
Fan relay
Y
Compressor contactor
Aux/E Auxiliary heat relay
C
24 Vac common [3]
R
Power [1]
1H/1C System
TH2110DV/
TH1110DV
(1 transformer)
G
Fan relay
Y
Compressor contactor
W
Heat relay
C
24 Vac common [3]
R
[R+Rc joined by jumper]
Rc
Power [1]
1H/1C System
TH2110DV/
TH1110DV
(2 transformers)
G
Fan relay
Y
Compressor contactor
W
Heat relay
C
24 Vac common [3, 4]
R
Power (heating transformer) [1, 2]
Rc
Power (cooling transformer) [1, 2]
Heat Only System
TH1100DV
W
Heat relay
C
24Vac common [3]
R
Power [1]
NOTES
Wire specifications:
Use 18- to 22-gauge thermostat wire.
Shielded cable is not required.
[1] Power supply. Provide disconnect means
and overload protection as required.
[2] Remove jumper for 2-transformer systems.
[3] Optional 24 Vac common connection.
69-2800EFS—03
TH2210DV/TH1210DV
B
O
G
Y
Aux/
C
R
E
M32809B
G
Y W
C
G
Y W
C
R
M32812
W C
See [notes] below
1H/1C Heat
Not
Pump System
Used
TH2110DV/TH1110DV [7]
B
O
G
Y
W
C
R
Rc
Heat Only
System
R
Rc
TH2110DV/TH1110DV
M32811
W
C
R
Rc
Heat Only
System with
Fan TH2110DV/TH1110DV
G
Rc
W
C
R
Rc
Cool Only
System
TH2110DV/TH1110DV
G
Y
R
C
M34801
R
Rc
[4] Common connection must come from
cooling transformer.
[5] Use either O or B terminals for changeover
valve.
[6] Use a small piece of wire (not supplied) to
connect W and Y terminals.
[7] Set fan operation switch to
(see page 5).
4
B
O
Changeover valve energized in
heating [5]
Changeover valve energized in
cooling [5]
Fan relay
Compressor contactor [6]
[W+Y joined by jumper]
24 Vac common [3]
[R+Rc joined by jumper]
Power [1]
Heat relay
24Vac common [3]
[R+Rc joined by jumper]
Power [1]
Fan relay
Heat relay
24 Vac common [3]
[R+Rc joined by jumper]
Power [1]
Fan relay
Compressor contactor
24 Vac common [3]
[R+Rc joined by jumper]
Power [1]
G
Y W
C
R
Rc
M32813
W
C
R
Rc
M32814
G
W
C
R
Rc
M32815
G
Y
C
R
Rc
M32816
Heat Pump
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