Honeywell Heat/1Cool - T841A1563 Premier 2 Stage Thermostat User Manual page 39

Existing
Function
Terminals
Common
C
Power
R
Compressor
Y1
1st Stg. Heat
–
Aux. Heat
W2
Fan
G
C/O Valve
B
Heat
C/O Valve
O
Cool
System Monitor/
X
System Defrost
EM. Heat
E
Multiple Aux.
–
Heat Loads
LED Indication
–
2nd Stage
–
Compressor
Confgure O/B (select models) in Installer Setup.
When W2 is not used, configure W2 cycle rate to NC.
LED is energized when terminal is powered.
L terminal is powered continuously when thermostat is in Em. Ht. position.
Terminal X (C) must be connected to transformer common.
TYPICAL THERMOSTATS AND SUBBASES: HP1, HP1EF, HP10EF, HP15
Electromechanical
X X X
R R R
Y Y1 Y1
– W1 W1
W2 W2 W2
G G G
B B B
O O O
L X1
E E E
W3 W3 W3
– X2 X2
– – –
Electronic Replacement or Upgrade
Chronotherm ®
III
C C
R R
or
Y1 Y Y
W1 W1
W2 W2
G G
B B B
O O O
L L
E E
– –
X1 X2 –
– –
Optional CHECK LED on T8611G,M. Connect X to X1; jumper X2 to C.
See Fig. 26 and 27.
Field-installed W1 to Y1 jumper (provided).
Field-installed X2 to X jumper (provided).
AMERICAN STABILIS
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
– – –
– – X1 X2
– – –
70-6627 • 37
C
R
Y1/W1
–
Aux.
G
O/B
O/B
L
E
–
–
W2
M13142