Honeywell Heat/1Cool User Guide - Page 47

Two-speed Cooling Compressors

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Electromechanical Function Common ³ Existing Terminals C Power R 1st Stg. Y Compressor 2nd Stg. Y2 Compressor 2nd Stg. W2 Heat Relay Fan G C/O Valve O Cool C/O Valve - Heat System Monitor/ L System Defrost EM. Heat E Multiple Aux. - Heat Loads ³ Terminal C must be connected to transformer common. · Configure O/B in Installer Setup. » LED is energized when terminal is powered. NOT AVAILABLE NOT AVAILABLE NOT AVAILABLE AVAILNAOBTLE AVAILNAOBTLE AVAILNAOBTLE T8611M7008 T8511M1002 TT88661111MM22002157 W890P0CB8190000/2 Chronotherm® III CARRIER TWO-SPEED COOLING COMPRESSORS Electronic Replacement or Upgrade Chronotherm IV C C R R Y Y1 C C R R Y1 Y1/W1 Y2 Y2 Y2 Y2 W2 ´ ´ W2 G G · O O/B B O/B · ¿ » L L G · O/B · O/B ¿ L G · O/B O/B · » L E E E E W3 W3 W3 Aux. ¿ L terminal is powered continuously when thermostat is in Em. Ht. position. ´ If 2nd stage heat is auxiliary (electric resistive), connect auxiliary stage to W3. M13150 TYPICAL THERMOSTATS AND SUBBASES - HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874S1001/Q674F1501 (HH07AT201/HH93AZ215) T8611T7000 (HH07AX112) T8611T7018 (HH07AX113) 70-6627 • 45

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70-6627
•
45
CARRIER
TWO-SPEED COOLING COMPRESSORS
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)
T874S1001/Q674F1501 (HH07AT201/HH93AZ215)
T8611T7000 (HH07AX112)
T8611T7018 (HH07AX113)
Function
Existing
Terminals
NOT
AVAILABLE
NOT
AVAILABLE
T8611M7008
PC8900/
W8900B1002
Electromechanical
Chronotherm
®
III
Electronic Replacement or Upgrade
Common
A
Power
1st Stg.
Compressor
2nd Stg.
Compressor
2nd Stg.
Heat Relay
Fan
C/O Valve
Cool
C/O Valve
Heat
System Monitor/
System Defrost
EM. Heat
Multiple Aux.
Heat Loads
M13150
NOT AVAILABLE
NOT
AVAILABLE
NOT AVAILABLE
A
Terminal C must be connected to transformer common.
B
Configure O/B in Installer Setup.
C
LED is energized when terminal is powered.
B
B
NOT AVAILABLE
T8511M1002
T8611M2017
T8611M2025
C
B
B
B
B
D
C
D
D
L terminal is powered continuously when thermostat is in Em. Ht. position.
E
If 2nd stage heat is auxiliary (electric resistive), connect auxiliary stage
to W3.
C
C
C
C
C
R
R
R
R
R
Y
Y
Y1
Y1
Y1/W1
Y2
Y2
Y2
Y2
Y2
W2
W2
W2
G
G
G
G
G
O
O
O/B
O/B
O/B
–
B
O/B
O/B
O/B
L
L
L
L
L
E
E
E
E
E
–
W3
W3
W3
Aux.
E
E
Chronotherm IV