Honeywell Heat/1Cool - T841A1563 Premier 2 Stage Thermostat User Manual page 113

Existing
Function
Terminals
B
Common
R
Power
or
Compressor Y Y1
W1
1st Stage
Heat
or
W W2
Aux. Heat
G
Fan
C/O Valve H
Heat
O
C/O Valve
Cool
X
System Monitor/
System Defrost
or
E X
Em. Heat
Mutiple
Heat Loads –
LED
Indication –
H terminal is not available on all models.
Terminal must be connected to the transformer common.
Configure O/B (select models) in Installer Setup.
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)
T841A1274 (2TH11703324)
T872G1299/Q672L1177
T872R1032/Q672L1011
T874G1170/Q674J1027 (2TH11702424)
T874G1196/Q674J1027
T874G1345 (2TH11702624)
T874G1402/Q674L1363 (2TH11702824)
B2CH, B2PS, E1CS, E1EB, E1HB, E2CH, STELLAR 2000 (DIRECT REPLACEMENTS)
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
Y1 Y
W1 W1
W2 W2
G G
B B B
O O O
L L
E E
– –
– –
Do not remove factory-installed jumper.
Configure W2 cycle rate to NC.
T874G1428/Q674J1027 (6TH11702424)
T874R1046/Q674L1017 (2TH11702224)
T874R1046/Q674L1272 (2TH11702224)
T8141A1006
T8300A1037/Q6300A1044 (2ET11700124A)
T8611R1018 (025-27655)
YORK/BORG WARNER
Chronotherm
IV
C C C
R R R
Y1 Y Y1
W1 W1 W1
W2 W2 W2
G G G
or or
O/B B B O/B
or or
O/B O O O/B
L L L
E E E
– – –
– – –
70-6627 • 111
C
R
Y1/W1
–
Aux.
G
O/B
O/B
L
E
W2
–
M13215