Honeywell Heat/1Cool - T841A1563 Premier 2 Stage Thermostat User Manual page 84

LUXAIRE (MONCRIEF/FRASER JOHNSTON)
Existing
Function
Terminals
or
Common
B X
Power
R
Compressor
Y
1st Stage
–
Heat
or
Auxiliary
W W2
Heat
Fan
G
C/O Valve
–
Heat
C/O Valve
O
Cool
System Monitor/
–
System Defrost
or
EM. Heat
X E
Multiple Aux.
–
Heat Loads
LED Indication
–
2nd Stage
–
Compressor
Configure O/B (select models) in Installer Setup.
Both first stage heat and cool are connected to Y terminal.
Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.
Terminal X (C or B) must be connected to transformer common.
Do not remove factory-installed jumper.
Field-installed X2 to X jumper (provided).
70-6627 • 82
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 –
– –
If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.
Optional CHECK LED. Connect X1 to switching device; jumper X2 to C.
Optional LED indication activated with completed circuit on X1 and
X2 terminals.
When W2 is not used, configure W2 cycle rate to NC.
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
– – –
C
R
Y1/W1
–
Aux.
G
O/B O/B
O/B O/B
L
E
X2 –
W2
M13166