Models: WPH022, 028, 032, 036, 044, 054, 064. WRH022, 028, 032, 036, 044, 054, 064. WSH028, 032, 036, 042. DWPG024, 030, 036, 042,
048, 054, 060, 066. HWPG012, 017, 020, 024, 030, 036, 042, 048, 054, 060, 066. VWPG017, 020, 024, 030, 036, 042, 048, 054, 060, 066.
Existing
Terminals
Function
or
Common
C1
C
Power
R
or
Compressor
W1
Y
1st Stage
–
Heat
or
or
Auxiliary
W1
W2
W2
Heat
Fan
G
C/O Valve
–
Heat
or
C/O Valve
Y1
O
Cool
System Monitor/
X
System Defrost
EM. Heat
E
Multiple Aux.
–
Heat Loads
LED Indication
–
2nd Stage
–
Compressor
2nd Stage
–
Cool
Configure O/B (select models) in Installer Setup.
When W2 is not used, configure W2 cycle rate to NC.
Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)
T872G1265/Q672F1265
T872G1281/Q672F1265
T872R1016/Q672B1103
T874C1315
Electromechanical
X
X
X
R
R
R
Y
Y
Y1
–
W1
W1
W2
W2
W2
G
G
G
B
B
B
O
O
O
L
E
E
E
W3
W3
W3
–
X2
X1 X2
–
–
–
–
–
–
Electronic Replacement or Upgrade
®
Chronotherm
III
C
C
R
R
or
Y1
Y
Y
W1
W1
W2
W2
G
G
B
B
O
O
O
L
L
E
E
–
–
X1 X2
–
–
–
–
–
LED is energized when terminal is powered.
Terminal must be connected to the transformer common.
Do not remove factory-installed jumper.
L terminal is powered continuously in Em. Ht. position.
T874G1287/Q6741253
T874G1543/Q674F1345 (403-197)
T874R1012/Q674B1109
WESCO/ADDISON
Chronotherm
IV
C
C
C
R
R
R
Y1
Y
Y1
W1
W1
W1
W2
W2
W2
G
G
G
or
or
B
O/B
B
B
or
or
O/B
O
O
L
L
L
E
E
E
–
–
–
–
–
X1 X2
–
–
–
–
–
–
70-6627 • 103
C
R
Y1/W1
–
Aux.
G
O/B
O/B
O/B
O/B
L
E
–
–
W2
Y2
M13222