Honeywell Heat/1Cool User Guide - Page 79

HP9, HP10, IMPORTANT: Replace separate indoor/outdoor transformers with single 75 VA transformer.

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Page 79 highlights

LENNOX HP9, HP10 IMPORTANT: Replace separate indoor/outdoor transformers with single 75 VA transformer. See diagram on page 78. Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1712 Y594R1425 Y5Y9549G41G4174619 T8T681611G11R0100400 T8T481411R11R0120802 T8T581511G11G0140721 T8T081011R11R0110406 T8T681611G12G0220802 W890P0CB8190000/2 Existing Function Terminals Common X X X X C C C C C C Indoor ¿ Common X3 - Outside Power VR R Indoor ¾ Power V - Outside Compressor M Y 1st Stage - - Heat or Auxiliary W1 Y W2 Heat - - - R R R - Y ´ W1 - Y1 ´ W1 - or Y1 Y ´ W1 W2 W2 W2 - - - R R R - - R R - - - - - Y ´ W1 Y1 ´ W1 Y ´ W1 Y1 ´ W1 Y1/W1 - W2 W2 W2 W2 Aux. Fan F G C/O Valve - B Heat C/O Valve R O Cool System Monitor/ System Defrost L» G G B B O O µ L G G G G G G or ³ or ³ ³ B B B O/B B B O/B O/B or ³ ³ or ³ O O O O/B O O O/B O/B ¸ L ¸ L Lµ L¸ Lµ Lµ Em. Heat E E E E E E E E E E Thermistor A· - - - - - - - - - Multiple Aux. - Heat Loads LED Indication - W3 W3 W3 - - - - X2 ¶ X1 X2 ² X1 X2 - - - - - - X1 X2 - ³ Configure O/B (select models) in Installer Setup. ¶ Field-installed X2 to X jumper (provided). · Tape off. Not used. º Use Aux terminal for Auxiliary heat and configure W2 cycle rate to NC. » R8222B1067 Relay required to operate system monitor light (emergency ¾ If separate transformers are used, replace with one 75 VA transformer, as heat LED) on TRADELINE replacement thermostats. See page 10. shown on page 78. ¿ Terminal X (C) must be connected to transformer common. µ LED is energized when terminal is powered. ´ Do not remove factory-installed jumper. ¸ L terminal is powered continuously when thermostat is in Em. Ht. position. ² Optional Check LED on T8611G1004. See Fig. 26. M13163 TYPICAL THERMOSTATS AND SUBBASES - HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1067/Q672L1029 (P-8-11222) T874C1448/Q674L12165 (24F5101/24F5901) T872R1024/Q672L1003 T874R1020/Q674L1025 (24F5401/24F6101) T872R1040/Q672L1029 (P-8-11221) T874R1178/Q674L1165 (24F5601/24F5901) T872R1131/Q672L1144 70-6627 • 77

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70-6627
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77
LENNOX
HP9, HP10
IMPORTANT: Replace separate indoor/outdoor transformers with single 75 VA transformer. See diagram on page 78.
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)
T872G1067/Q672L1029 (P-8-11222)
T872R1024/Q672L1003
T872R1040/Q672L1029 (P-8-11221)
T872R1131/Q672L1144
T874C1448/Q674L12165 (24F5101/24F5901)
T874R1020/Q674L1025 (24F5401/24F6101)
T874R1178/Q674L1165 (24F5601/24F5901)
T8011R1006
T8011R1014
Function
Existing
Terminals
T841A1712
T8611R1000
T8611G1004
T8411R1002
T8411R1028
PC8900/
W8900B1002
Electromechanical
Chronotherm
®
III
Electronic Replacement or Upgrade
A
Configure O/B (select models) in Installer Setup.
B
Tape off. Not used.
C
R8222B1067 Relay required to operate system monitor light (emergency
heat LED) on TRADELINE replacement thermostats. See page 10.
D
Terminal X (C) must be connected to transformer common.
E
Do not remove factory-installed jumper.
F
Optional Check LED on T8611G1004. See Fig. 26.
Common
Indoor
D
Common
Outside
Power
Indoor
Power
Outside
Compressor
1st Stage
Heat
Auxiliary
Heat
Fan
C/O Valve
Heat
C/O Valve
Cool
System Monitor/
System Defrost
Em. Heat
Thermistor
Multiple Aux.
Heat Loads
LED
Indication
K
M13163
E
G
Field-installed X2 to X jumper (provided).
H
Use Aux terminal for Auxiliary heat and configure W2 cycle rate to NC.
I
If separate transformers are used, replace with one 75 VA transformer, as
shown on page 78.
J
LED is energized when terminal is powered.
K
L terminal is powered continuously when thermostat is in Em. Ht. position.
E
E
E
E
A
A
A
A
A
A
G
F
C
J
B
K
K
J
J
J
E
E
T8511G1021
T8511G1047
T8611G2002
T8611G2028
I
X
X
X
X
C
C
C
C
C
C
X3
–
–
–
–
–
–
–
–
–
VR
R
R
R
R
R
R
R
R
R
V
–
–
–
–
–
–
–
–
–
M
Y
Y
Y1
Y1
or
Y
Y
Y1
Y
Y1
Y1/W1
–
–
W1
W1
W1
W1
W1
W1
W1
–
W1
or
Y
W2
W2
W2
W2
W2
W2
W2
W2
Aux.
F
G
G
G
G
G
G
G
G
G
–
B
B
B
B
B
B
or
O/B
B
B
or
O/B
O/B
R
O
O
O
O
O
O
or
O/B
O
O
or
O/B
O/B
L
L
L
L
L
L
L
L
E
E
E
E
E
E
E
E
E
E
A
–
–
–
–
–
–
–
–
–
–
W3
W3
W3
–
–
–
–
–
–
–
–
X2
X1
X2
X1
X2
–
–
–
X1
X2
–
Chronotherm
IV
Y594R1425
Y594G1419
Y594G1476