Honeywell Heat/1Cool - T841A1563 Premier 2 Stage Thermostat User Manual page 59

Existing
Function
Terminals
or
Common
C B
Power
R
Compressor
Y
1st Stage
–
Heat
or
Aux. Heat
W1 W
Fan
G
C/O Valve
–
Heat
C/O Valve
O
Cool
System Monitor/
F
System Defrost
EM. Heat
B
Outdoor
T
Sensor
or
Outdoor W2 X2
Thermostat
LED Indication
–
2nd Stage
–
Compressor
Terminal X (C) must be connected to transformer common.
Tape off. Electric thermostat replaces outdoor reset with improved zero droop
performance.
Do not remove factory-installed jumper.
Optional CHECK LED on T8611G1004. See Fig. 26.
Configure O/B (select models) in Installer Setup.
3AAT86B1A1
3AAT83F1B2
Electromechanical
B B B
R R R
Y Y Y1
– – –
W W W
G G G
– – –
O O O
F F F
– – –
T T T
X2 X2 X2
– – –
– – –
TYPICAL THERMOSTATS AND SUBBASES — CUSTOMER PART NUMBER
3AAT80A1A1
3AAT83E12A1
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 –
– –
Optional LED indication activated with completed circuit on X1 and
X2 terminals.
LED is energized when terminal is powered.
L terminal is powered continuously when thermostat is in Em. Ht. position.
When W2 is not used, configure W2 cycle rate to NC.
GENERAL ELECTRIC
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
– – –
3AAT80B1A1
C
R
Y1/W1
–
Aux.
G
O/B O/B
O/B O/B
L
–
E
–
W2
M13180
70-6627 • 57