Honeywell Heat/1Cool User Guide - Page 46

Function, Electromechanical, Chronotherm, Electronic Replacement or Upgrade, Chronotherm IV

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CARRIER USES HONEYWELL Q674L1116 (HH93AZ171) SUBBASE Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV AVAILNAOBTLE AVAILNAOBTLE Q67T487F410D21216º5/ T8611M7008 T8511M1002 TT88661111MM22002157 W890P0CB8190000/2 Function Common · Existing Terminals C X1 C C C C Power R ¶ Compressor Y R R R R R ¶ ¶ Y1 Y Y1 Y1 Y1/W1 1st Stg. Heat 2nd Stage Compressor - ´ Y1 W1 - - - - W2 W2 Y2 Y2 W2 NOT AVAILABLE NOT AVAILABLE Fan G C/O Valve - Heat C/O Valve O Cool System Monitor/ L System Defrost EM. Heat E 2nd Stg. Cool - LED Indication - G G B B O ² X2 ² E Y2 ³ - O µ L E Y2 ³ X1 X2 » G ¿ O/B ¿ O/B ¾ L E - - G ¿ O/B ¿ O/B µ L E - X2 » G ¿ O/B ¿ O/B ¾ L E Y2 ³ - ³ Jumper Y2 to W2. · Terminal C (X1) must be connected to transformer common. » Optional CHECK LED on T8611M7008. Connect L to X1, jumper X2 to C. ¿ Configure O/B (select models) in Installer Setup. ´ In this application, auxiliary heat and compressor two are both connected to terminal Y1. ² For second stage compressor LED indication, jumper X2 to Y2 on Q674. For emergency heat LED indication, jumper X2 to E. For system monitor LED indication, connect L to X2. ¶ Both first stage heat and cool are connected to Y or Y1/W1 terminal. º When subbase system switch is in AUTO position, equipment operates in cool mode only. ¾ LED is energized when terminal is powered. µ L terminal is powered continuously when thermostat is in Em. Ht. position. M13149 TYPICAL THERMOSTATS AND SUBBASES - HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874D1264/Q674L1116 (HH07AT173/HH93AZ171) 70-6627 • 44

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70-6627
44
CARRIER
USES HONEYWELL Q674L1116 (HH93AZ171) SUBBASE
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)
T874D1264/Q674L1116 (HH07AT173/HH93AZ171)
Function
Existing
Terminals
NOT
AVAILABLE
T874D1165/
Q674F1022
H
T8611M7008
T8511M1002
T8611M2017
T8611M2025
PC8900/
W8900B1002
Electromechanical
Chronotherm
®
III
Electronic Replacement or Upgrade
Common
B
Power
Compressor
1st Stg. Heat
2nd Stage
Compressor
Fan
C/O Valve
Heat
C/O Valve
Cool
System Monitor/
System Defrost
EM. Heat
2nd Stg. Cool
LED
Indication
M13149
NOT AVAILABLE
NOT
AVAILABLE
NOT AVAILABLE
A
Jumper Y2 to W2.
B
Terminal C (X1) must be connected to transformer common.
C
Optional CHECK LED on T8611M7008. Connect L to X1, jumper X2 to C.
D
Configure O/B (select models) in Installer Setup.
E
In this application, auxiliary heat and compressor two are both connected
to terminal Y1.
F
For second stage compressor LED indication, jumper X2 to Y2 on Q674.
For emergency heat LED indication, jumper X2 to E. For system monitor
LED indication, connect L to X2.
G
Both first stage heat and cool are connected to Y or Y1/W1 terminal.
H
When subbase system switch is in AUTO position, equipment operates in
cool mode only.
I
LED is energized when terminal is powered.
J
L terminal is powered continuously when thermostat is in Em. Ht. position.
E
G
A
A
D
G
D
A
C
F
F
G
I
J
D
I
D
D
D
J
C
C
X1
C
C
C
C
R
R
R
R
R
R
Y
Y1
Y
Y1
Y1
Y1/W1
W1
Y1
W2
W2
Y2
Y2
W2
G
G
G
G
G
G
B
B
O/B
O/B
O/B
O
O
O
O/B
O/B
O/B
L
X2
L
L
L
L
E
E
E
E
E
E
Y2
Y2
Y2
X1
X2
X2
Chronotherm IV