Honeywell Heat/1Cool User Guide - Page 72

Intertherm/miller/nordyne

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INTERTHERM/MILLER/NORDYNE Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1308 Y594R1797 Y594G1633 T8T6816111G1R0100400 T8T481411R11R0120802 T8T581511G11G0140721 T8T081011R11R0110406 T8T681611G12G0220802 W890P0CB8190000/2 Existing Function Terminals Common ¿ X X X X Power R R R R Compressor Y Y Y Y 1st Stage - Heat - - - Aux. Heat W2 Fan G W2 W2 W2 º G G G C/O Valve W1 B B B Heat C/O Valve - Cool System Z Monitor O » L O » L O » L Em. Heat K E E E LED Indication - - - - 2nd Stage - Compressor - - - 2nd Stage - Cool - - - ³ Configure 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. ¿ Terminal X (C) must be connected to transformer common. ´ Do not remove factory-installed jumper. C R or Y1 Y ´ W1 W2 º G B O ¶ L C R Y ´ W1 C R Y1 ´ W1 W2 W2 º G B º G ᕡ or B O/B ᕡ or O O O/B ¶ L » L C C C R Y ´ W1 R R Y1 ´ W1 Y1/W1 - W2 º G B O W2 º G ᕡ or B O/B ᕡ or O O/B · Aux. º G ᕡ O/B ᕡ O/B ¶ » » L L L E E E X1 X2 ² - - - - - E E E - X1 X2 - · - - W2 - - - - - Y2 ² Optional LED indication activated with completed circuit on X1 and X2 terminals. ¶ L terminal is powered continuously when thermostat is in Em. Ht. position. º To eliminate auto fan in emergency heat mode, add switching relay as shown on page 9. M13191 70-6627 • 70

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70-6627
•
70
INTERTHERM/MILLER/NORDYNE
Common
D
Power
Compressor
1st Stage
Heat
Aux. Heat
Fan
C/O Valve
Heat
C/O Valve
Cool
System
Monitor
Em. Heat
LED
Indication
2nd Stage
Compressor
2nd Stage
Cool
T8011R1006
T8011R1014
Function
Existing
Terminals
T841A1308
Y594R1797
Y594G1633
T8611R1000
T8611G1004
T8411R1002
T8411R1028
PC8900/
W8900B1002
Electromechanical
Chronotherm
®
III
Electronic Replacement or Upgrade
A
Configure O/B (select models) in Installer Setup.
B
When W2 is not used, configure W2 cycle rate to NC.
C
LED is energized when terminal is powered.
D
Terminal X (C) must be connected to transformer common.
E
Do not remove factory-installed jumper.
M13191
F
Optional LED indication activated with completed circuit on X1 and
X2 terminals.
G
L terminal is powered continuously when thermostat is in Em. Ht. position.
H
To eliminate auto fan in emergency heat mode, add switching relay as
shown on page 9.
1
1
1
C
E
E
E
E
E
C
C
1
1
1
B
C
G
G
C
G
X
X
X
X
C
C
C
C
C
C
R
R
R
R
R
R
R
R
R
R
Y
Y
Y
Y
Y1
or
Y
Y
Y1
Y
Y1
Y1/W1
–
–
–
–
W1
W1
W1
W1
W1
–
W2
W2
W2
W2
W2
W2
W2
W2
W2
Aux.
G
G
G
G
G
G
G
G
G
G
W1
B
B
B
B
B
B
or
O/B
B
B
or
O/B
O/B
–
O
O
O
O
O
O
or
O/B
O
O
or
O/B
O/B
Z
L
L
L
L
L
L
L
L
L
K
E
E
E
E
E
E
E
E
E
–
–
–
–
X1
X2
–
–
–
X1
X2
–
–
–
–
–
–
–
–
–
–
W2
–
–
–
–
–
–
–
–
–
Y2
H
H
C
H
H
H
H
H
T8511G1021
T8511G1047
T8611G2002
T8611G2028
B
F
Chronotherm
IV