Honeywell Heat/1Cool - T841A1563 Premier 2 Stage Thermostat User Manual page 66

HONEYWELL
RETAIL HEAT PUMP THERMOSTATS
Existing
Function
Terminals
Common
X
Power
R
Compressor
Y1
1st Stage
W1
Heat
Aux. Heat
W2
Fan
G
C/O Valve
B
Heat
C/O Valve
O
Cool
System
L
Monitor
EM. Heat
E
LED Indication
–
2nd Stage
–
Compressor
2nd Stage
–
Cool
Configure O/B (select models) in Installer Setup.
For best performance, use a NEMA standard transformer.
If separate Y1 and W1 terminals are required, install R8222D1014; see
page 12.
Terminal X (C) must be connected to transformer common.
70-6627 • 64
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
– X2 X1 X2
– – –
– – –
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER
®
Chronotherm
III
C C
R R
or
Y1 Y Y
W1 W1
W2 W2
G G
B B
O O
L L
E E
X1 X2 –
– –
– –
When W2 is not used, configure W2 cycle rate to NC.
Do not remove factory-installed jumper.
LED is energized when terminal is powered.
L terminal is powered continuously when thermostat is in Em. Ht. position.
CT70A1001
CT8611R1006
Electronic Replacement or Upgrade
Chronotherm
IV
C C
R R
Y1 Y Y1
W1 W1 W1
W2 W2 W2
G G
or or
B O/B B B
or or
O O/B O O
L L
E E
– – X1 X2
– –
– –
C C
R R
Y1/W1
–
Aux.
G G
O/B O/B
O/B O/B
L L
E E
–
– W2
– Y2
M13188