Installation Guide
4
69-2609EFS—03
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/

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/

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/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/TH1110DH
W Heat relay
C 24Vaccommon[3]
R [R+Rcjoinedbyjumper]
Rc Power[1]

Heat Only

System with

Fan TH2110DH/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/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systems.
 [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 sys tems

CYGO
BR
Aux/
E
M32809
TH2210DH/TH1210DH
Not
Used
RcCYW
GR
M32811
RcCYW
GR
M32812
RcCYWGO
BR
M32813
RcC
WR
M32814
RcCW
GR
M32815
RcCY
GR
M32816
See[notes]below
M32817
RW C Not
Used