Honeywell Heat/1Cool User Guide - Page 74

To eliminate auto fan in EM. Heat mode, see

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INTERTHERM/MILLER/NORDYNE Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1555 Y594R1763 Y594G1161 T8T681611R11G0100004 T8T481411R11R0120802 T8T5815111G1G0140721 T8T081011R11R0110406 T8T6816111G2G0220802 W890P0CB8190000/2 Existing Function Terminals · Common ³ X B B B C C C C C C Power R Compressor Y 1st Stage - Heat Auxiliary W2 Heat Fan G R R R R or Y Y Y1 Y1 Y ¿ - - - W1 W ² G W ² G W ² G W2 ² G R Y ¿ W1 R Y1 ¿ W1 W2 ² G W2 ² G R Y ¿ W1 W2 ² G R Y1 ¿ W1 R Y1/W1 - ¶ W2 Aux. ² G ² G Outdoor T T T T ´ ´ ´ ´ ´ ´ Thermistor Em. Heat ² K X2 X2 X2 C/O Valve W1 Cool System Monitor/ Z System Defrost O O O º º º F F F ³ For best performance, use a NEMA rated transformer. · Terminal B (C, X) must be connected to transformer common. » Configure O/B (select models) in Installer Setup. ¿ Leave factory-installed jumper W1-Y1 (Y) in place. ´ Tape off. Electronic thermostat replaces outdoor reset with improved zero droop performance. E E E E E E or » » or » O O O O/B O O O/B O/B ¾ ¾ º ¾ º º L L L L L L ² To eliminate auto fan in EM. Heat mode, see page 9. ¶ Use Aux terminal for Auxiliary heat and configure W2 cycle rate to NC. º LED is energized when terminal is powered. ¾ L terminal is powered continuously when thermostat is in Em. Ht. position. M13160 70-6627 • 72

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70-6627
•
72
INTERTHERM/MILLER/NORDYNE
T8011R1006
T8011R1014
Function
Existing
Terminals
T841A1555
Y594R1763
Y594G1161
T8611G1004
T8611R1000
T8411R1002
T8411R1028
PC8900/
W8900B1002
Electromechanical
Chronotherm
®
III
Electronic Replacement or Upgrade
A
For best performance, use a NEMA rated transformer.
B
Terminal B (C, X) must be connected to transformer common.
C
Configure O/B (select models) in Installer Setup.
D
Leave factory-installed jumper W1-Y1 (Y) in place.
E
Tape off. Electronic thermostat replaces outdoor reset with improved zero
droop performance.
Common
A
Power
Compressor
1st Stage
Heat
Auxiliary
Heat
Fan
Outdoor
Thermistor
Em. Heat
F
C/O Valve
Cool
System Monitor/
System Defrost
M13160
D
F
To eliminate auto fan in EM. Heat mode, see page 9.
G
Use Aux terminal for Auxiliary heat and configure W2 cycle rate to NC.
H
LED is energized when terminal is powered.
I
L terminal is powered continuously when thermostat is in Em. Ht. position.
D
D
D
D
C
C
C
B
E
E
E
E
E
X
B
B
B
C
C
C
C
C
C
R
R
R
R
R
R
R
R
R
R
Y
Y
Y
Y1
Y1
or
Y
Y
Y1
Y
Y1
Y1/W1
–
–
–
–
W1
W1
W1
W1
W1
–
W2
W
W
W
W2
W2
W2
W2
W2
Aux.
G
G
G
G
G
G
G
G
G
G
T
T
T
T
K
X2
X2
X2
E
E
E
E
E
E
W1
O
O
O
O
O
O
or
O/B
O
O
or
O/B
O/B
Z
F
F
F
L
L
L
L
L
L
E
F
F
F
F
F
F
F
F
F
T8511G1021
T8511G1047
T8611G2002
T8611G2028
G
I
I
I
H
H
H
H
H
Chronotherm
IV
H