Honeywell Home T4 Pro Series Manual page 5

2 Transformer System, Hot Water Heat
with Air-Conditioning (or Hot Water
Coil)
S L/A
O/B
S
Y
AUX
Y2 E
G
C
U
U
1
C G Y R
AIR HANDLER
1 COMMON OPTIONAL.
Hot Water Heat with Power Open Zone
Valve
S
L/A
S O/B
Y
AUX
Y2 E
G
C
U
U
1
TH
TR
V8043
ZONE VALVES
COMMON OPTIONAL TO THERMOSTAT.
1
COMPATIBLE MODELS:
TH4110U2005
A
TH4210U2002
W2
W
K
R
Rc
R/Rc SWITCH
DOWN
W R
BOILER
M38994
COMPATIBLE MODELS:
TH4110U2005
A
TH4210U2002
W2
W
K
R
Rc
R/Rc SWITCH
UP
R
24 VOLTS
C
TRANSFORMER
R (T)
W (T)
BOILER
M38996
Hot Water Boiler, Heat Only
S
L/A
S O/B
Y
AUX
Y2 E
G
C
U
U
W (T)
Hot Water Heat with Power Open/
Power Closed, Series 20 Zone Valve
S
L/A
S O/B
Y
AUX
Y2 E
G
C
U
U
POWER OPEN/
1
POWER CLOSED
ZONE VALVE
1 COMMON OPTIONAL TO THERMOSTAT.
2 THERMOSTAT MUST BE CONFIGURED FOR RADIANT HEAT
WITH 0 COOL STAGES.
5
COMPATIBLE MODELS:
TH4110U2005
A
TH4210U2002
W2
W
K
R
Rc
R/Rc SWITCH
UP
BOILER
R (T)
M38995
COMPATIBLE MODELS:
TH4110U2005
A
TH4210U2002
W2
W
K
R
Rc
R/Rc SWITCH
UP
5 2
TO AUXILIARY
CIRCUIT FOR
6 3
OPERATING BOILER.
(SEE VALVE
INSTUCTIONS)
4 1
R
C
TRANSFORMER
M38997
2
L1
120 VOLT
SUPPLY
L2