Installation Guide
4
69-2609EFS—15
ENGLISH
Wiring
2H/1C Heat
Pump System
TH2210DH/TH1210DH
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
TH2110DH/TH1110E1/
TH1110DH
(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
TH2110DH/
TH1110E1/
TH1110DH
(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
TH1100DH
W
Heat relay
C
24Vac common [3]
R
Power [1]
1H/1C Heat
Pump System
TH2110DH/
TH1110E1/TH1110DH
[7]
B
Changeover valve energized in
heating [5]
O
Changeover valve energized in
cooling [5]
G
Fan relay
Y
Compressor contactor [6]
W
[W+Y joined by jumper]
C
24 Vac common [3]
R
[R+Rc joined by jumper]
Rc
Power [1]
Heat Only
System
TH2110DH/TH1110E1/TH1110DH
W
Heat relay
C
24Vac common [3]
R
[R+Rc joined by jumper]
Rc
Power [1]
Heat Only
System with Fan
TH2110DH/TH1110E1/TH1110DH
G
Fan relay
W
Heat relay
C
24 Vac common [3]
R
[R+Rc joined by jumper]
Rc
Power [1]
Cool Only
System
TH2110DH/TH1110E1/TH1110DH
G
Fan relay
Y
Compressor contactor
C
24 Vac common [3]
R
[R+Rc joined by jumper]
Rc
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 sys-
tems.
[3] Optional 24 Vac common connection.
[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
Heat Pump
(see page 5).
Wiring guide — conventional and heat pump systems
C
Y
G
O
B
R
Aux/
E
M32809
TH2210DH/TH1210DH
Not
Used
Rc
C
Y W
G
R
M32811
Rc
C
Y W
G
R
M32812
Rc
C
Y W
G
O
B
R
M32813
Rc
C
W
R
M32814
Rc
C
W
G
R
M32815
Rc
C
Y
G
R
M32816
See [notes] below
M32817
R
W C
Not
Used
