Honeywell Heat/1Cool User Guide - Page 87

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MAMMOTH Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1712 Y594R1425 Y5Y9549G41G4174619 T8T681611G11R0100400 T8T481411R11R0120802 T8T581511G11G0140721 T8T081011R11R0110406 T8T681611G12G0220802 W890P0CB8190000/2 Existing Function Terminals Common ² or C X X X X C C C C C C Power or R R1 R R R R R R R R R Power Reset R2 - 1st Stage or · Y1 Y Y Comp. 2nd Stage Y2 - Comp. - - - or Y Y1 Y1 Y ¶ ¶ ¶ - - - - - - - - Y Y1 Y Y1 Y1/W1 ¶ ¶ ¶ ¶ - - - - - Y2 1st Stage - Heat - W1 W1 W1 ¿ Aux. Heat W2 W2 W2 W2 W2 W1 W1 W1 W1 - µ W2 W2 W2 W2 Aux. Fan G G C/O Valve B B Heat C/O Valve O O Cool System Monitor/ System Defrost ´ ¿ or X ´ L EM. Heat - E G G B B O O ¹ L E E G G G G G G B ³ or B B O/B B ³ or B O/B ³ O/B O ³ or O O O/B O ³ or O O/B ³ O/B Ƹ L Ƹ ¹ L L Ƹ L ¹ ¹ L L E E E E E E Multiple Aux. - Heat Loads » LED Indication - W3 W3 W3 - - - - X2 ¾ X1 X2 ¸ X1 X2 º - - - - - ¸ - X1 X2 - Filter F - - - - - - - - - 2nd Stage µ Compressor - - - - - - - - - W2 ³ Configure O/B (select models) in Installer Setup. · Both first stage heat and cool are connected to Y terminal. » Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. ¿ If provided on original equipment. ´ Relay (typically R8222B1067) required if outdoor section has reset shunt relay and malfunction light indication is desired on thermostat. See page 11. ² Terminal X (C) must be connected to transformer common. ¶ Do not remove factory-installed jumper. º Optional CHECK LED on T8611G1004. See Fig. 26. ¾ Field-installed X2 to X jumper (provided). µ When W2 is not used, configure W2 cycle rate to NC. ¸ Optional LED indication activated with completed circuit on X1 and X2 terminals. ¹ LED is energized when terminal is powered. Ƹ L terminal is powered continuously in Emergency Heat Position. M13169 T834C2135 TYPICAL THERMOSTATS AND SUBBASES - HONEYWELL MODEL NUMBER T841B1042 T874G1659/Q674C1330 T874H1096/Q674C1330 T874Y1005/Q674E1353 70-6627 • 85

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70-6627
•
85
MAMMOTH
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER
T834C2135
T841B1042
T874G1659/Q674C1330
T874H1096/Q674C1330
T874Y1005/Q674E1353
T8011R1006
T8011R1014
Function
Existing
Terminals
T841A1712
T8411R1002
T8411R1028
PC8900/
W8900B1002
Electromechanical
Chronotherm
®
III
Electronic Replacement or Upgrade
A
Configure O/B (select models) in Installer Setup.
B
Both first stage heat and cool are connected to Y terminal.
C
Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.
D
If provided on original equipment.
E
Relay (typically R8222B1067) required if outdoor section has reset shunt
relay and malfunction light indication is desired on thermostat. See page 11.
F
Terminal X (C) must be connected to transformer common.
Common
F
Power
Power Reset
1st Stage
Comp.
2nd Stage
Comp.
1st Stage
Heat
Aux. Heat
Fan
C/O Valve
Heat
C/O Valve
Cool
System Monitor/
System Defrost
E
EM. Heat
Multiple Aux.
Heat Loads
C
LED
Indication
Filter
2nd Stage
Compressor
M13169
G
Do not remove factory-installed jumper.
H
Optional CHECK LED on T8611G1004. See Fig. 26.
I
Field-installed X2 to X jumper (provided).
J
When W2 is not used, configure W2 cycle rate to NC.
K
Optional LED indication activated with completed circuit on X1 and
X2 terminals.
L
LED is energized when terminal is powered.
M
L terminal is powered continuously in Emergency Heat Position.
B
M
L
L
L
M
J
G
E
H
K
I
A
A
A
A
A
A
G
G
G
G
G
G
M
D
D
K
C
or
X
X
X
X
C
C
C
C
C
C
R
or
R1
R
R
R
R
R
R
R
R
R
R2
–
–
–
–
–
–
–
–
–
Y1
or
Y
Y
Y
Y1
Y1
or
Y
Y
Y1
Y
Y1
Y1/W1
Y2
–
–
–
–
–
–
–
–
–
Y2
–
–
W1
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
B
B
B
B
B
B
B
or
O/B
B
B
or
O/B
O/B
O
O
O
O
O
O
O
or
O/B
O
O
or
O/B
O/B
X
or
L
L
L
L
L
L
L
L
–
E
E
E
E
E
E
E
E
E
–
W3
W3
W3
–
–
–
–
–
–
–
–
X2
X1
X2
X1
X2
–
–
–
X1
X2
–
F
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
W2
L
T8611R1000
T8611G1004
T8511G1021
T8511G1047
T8611G2002
T8611G2028
J
Chronotherm
IV
Y594R1425
Y594G1419
Y594G1476