Honeywell Heat/1Cool - T841A1563 Premier 2 Stage Thermostat User Manual page 78

LENNOX
HP6
Existing
Function
Terminals
or or
Common
– –
or
Power
R V VR V VR V
Compressor
Y1 M1
1st Stage
W1 R
Heat
Auxiliary
W2 Y
Heat
Fan
G F
C/O Valve
– –
Cool
SystemMonitor/
X1 –
System Defrost
Em. Heat
– –
2nd Stage
– –
Compressor
Terminal X (C) must be connected to transformer common.
Configure O/B (select models) in Installer Setup.
If separate Y1 and W1 terminals are required, install R8222D1014; see
page 12.
70-6627 • 76
Electromechanical
– X –
or
R R
M Y1 Y1
– W1 W1
Y W2 W2
F G G
R O O
– – –
– – –
– – –
Electronic Replacement or Upgrade
®
Chronotherm
III
C C
R R
Y1 Y
W1 W1
W2 W2
G G
O O O
L L
E E
– –
If separate transformers are used, replace with one 75 VA transformer as
shown on page 78.
When replacing models with one compressor terminal, jumper Y1 to W1.
Field-installed E to W2 (Aux) jumper required.
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
O/B O O O/B
L L L
E E E
– – –
C
R
Y1/W1
–
Aux.
G
O/B
L
E
W2
M13162