6
TH4110U2005
TH4210U2002
1
COMMON OPTIONAL.
L CONNECTION (HEAT PUMP FAULT) NOT AVAILABLE ON T1 AND T4
MODELS. THE TH6210U2001 CAN BE USED IF FAULT INDICATION ON
THERMOSTAT IS NEEDED.
SOME HEAT PUMPS USE B RATHER THAN O FOR REVERSING VAL
DO NOT CONNECT ANY WIRE TO W FOR HEAT PUMP APPLICATIONS!
THIS CAN CAUSE HEAT TO RUN CONTINUOUSLY.
S
S
Y
Y2
G
C
U
U
A
W2
W
K
Rc
R
L/A
E
AUX
HEAT PUMP/
AIR-HANDLER
O/B
1
1
R
O
Y
G
C
L
2
3
4
1
2
1
3
4
R/Rc
SWITCH UP
TH4210U2002
1
COMMON OPTIONAL.
L CONNECTION (HEATPUMP FAULT) NOT AV
MODEL. THE TH6210U2001 CAN BE USED IF FAULT INDICATION ON
THERMOSTAT IS NEEDED.
SOME HEAT PUMPS USE B RATHER THAN O FOR REVERSING VALVE.
DIFFERENT HEAT PUMP MODELS LABEL THE AUXILIARY HEAT
TERMINAL DIFFERENTLY THAN SHOWN. CONSULT HEAT PUMP
WIRING GUIDE.
IF AUX HEAT LOCKOUT ON HIGH OUTDOOR TEMPERATURE IS
REQUIRED, USE TH6220U2000 THERMOSTAT AND C7089U1006
OUTDOOR SENSOR. THE TH4210U2002 CANNOT DO THIS.
MOST HEAT PUMPS SHARE THE SAME SET OF HEAT STRIPS FOR AUX
AND EM HEAT. IN THOSE CASES E ISN’T USED. IF YOU HAVE SEPARATE
HEAT SOURCES FOR THE AUX AND EM HEAT, THE TH4210U2002 CANNOT
BE SET TO DO THIS. THE TH6320U2008 MODEL CAN BE CONFIGURED
FOR SEPARATE AUX AND E. IF THIS IS DONE, WIRE ONE SET OF STRIPS
TO E TO BE ENERGIZED IN EM HEAT AND A DIFFERENT SET OF STRIPS
TO AUX TO BE ENERGIZED IN AUX HEAT.
DO NOT CONNECT ANY WIRE TO W FOR HEAT PUMP
APPLICATIONS! THIS CAN CAUSE HEAT TO RUN CONTINUOUSLY.
S
S
Y
Y2
G
C
U
U
A
W2
W
K
Rc
R
L/A
E
AUX
HEAT PUMP/
AIR-HANDLER
R/Rc
SWITCH UP
O/B
1
RAUX
L
G
C
O
Y
2
3
4
5
6
7
2
3
4
6
7
5
1H/1C: Heat Pump without Aux Heat 2H/1C: Heat Pump with Electric Aux
Heat
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