Honeywell CT87A Support Question
Honeywell CT87A Support Question
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Question posted by annadc on February 24th, 2014
How To Operate Honeywell Ct87a 4447 Thermostat
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Related Honeywell CT87A Manual Pages
Owner's Manual - Page 1
.... Registered Trademark Copyright © 2002 Honeywell All Rights Reserved
69-0274-6
Installation Instructions
Compatible with:
Heating/Cooling system
CT87A CT87B CT87J
Heating only: Gas or...your heating/cooling system. CT87A,B,J Round® Thermostat
LOW VOLTAGE (15 TO 30 VAC), THERMOSTAT AND MOUNTING HARDWARE
1 Verify that you have the correct thermostat
Using the compatibility chart ...
Owner's Manual - Page 2
...
• Screws: two 1-in . Remove the cover of your heating system. CT87A,B,J ROUND® THERMOSTAT
2
Prepare for your type of
MERCURY SWITCH IN A THERMOSTAT
system when you reach Step 8 of M20206 this installation.
4. Carefully unpack your new thermostat; rough handling may need to
hide wall marks.
• These Installation Instructions and the Installation...
Owner's Manual - Page 3
...of the terminal on the old thermo- COVER RING
WALLPLATE
NO. 4 X 1 INCH SHEET METAL SCREWS (2)
3
THERMOSTAT WIRING OPENING
M20188
69-0274-6
stat (Fig. 2). Fig. 2. Wrapping wires. Fig. 4. Installing wallplate/subbase ....
6. M19086
MERCURY NOTICE
Fig. 3.
CT87A,B,J ROUND® THERMOSTAT
5. Label the wires using the letter
of an old control containing mercury in the trash.
Owner's Manual - Page 4
...that the arrow in the middle of the wallplate or subbase.
4.
ROUND HEAD SCREW (2)
A
THERMOSTAT WIRING HOLE
1 THE TWO INNER HOLES ARE USED WITH WALLPLATE.
2 IF OUTLET BOX IS ...2 COVER RING SUBBASE 1/4 IN. Installing wallplate/subbase on the wallplate is pointing up.
2. CT87A,B,J ROUND® THERMOSTAT
1. Remove the wallplate/subbase and cover ring, and drill two 1/16-in . You will...
Owner's Manual - Page 5
...the wallplate or subbase over the cover ring so that the arrow in Fig. 6. rate thermostat temperature.
1.
Fig. 6. SPIRIT LEVEL
LEVELING POSTS (2)
OPENING FOR THERMOSTAT WIRING
MOUNTING SLOTS
M3319A
2.
Pull the wires through the wiring hole on the bottom left ...outlet box so that the wiring holes line up .
2. screws, through .
5. CT87A,B,J ROUND® THERMOSTAT
1.
Owner's Manual - Page 6
...through 13 wiring diagrams.
Wiring Cross-reference
Wire Label R, RH, 4, V Rc, R W, W1, H Y, Y1, M G, F B O See Fig. 13
Connect to CT87A
R
W Y
See Fig. 9
Connect to Connect to
CT87B
CT87J
RH
R
Rc
W
W
Y
Y
G
G
B*
O*
P
*Never attach wires to fit the wires ... screws and slip each old
thermostat wire with its matching terminal.
4. CT87A,B,J ROUND® THERMOSTAT
6
Wire the...
Owner's Manual - Page 7
... RC
M20185
7
69-0274-6
R
Y W
CT87A WALLPLATE
WIRE LABELS (LETTERS ON ORIGINAL THERMOSTAT TERMINALS) R
3-WIRE
W
HOT WATER
ZONE VALVE
B M20184
Fig. 10. CT87B for a 3-wire hot water heating only system. CT87A for a 4-wire heating/cooling system.
CT87A WALLPLATE
R
Y W
POWER HEAT
TO SYSTEM
M20183
Fig. 9. CT87A,B,J ROUND® THERMOSTAT
Fig. 8. CT87A for a 2-wire heating only...
Owner's Manual - Page 8
...
COOL REVERSING
VALVE
TO SYSTEM
HEAT PUMP COMPRESSOR
DO NOT ATTACH WIRES TO BOTH B AND O
1 IF WIRES ARE ATTACHED TO Y OR W, AND P ON YOUR OLD
THERMOSTAT, CONTACT YOUR LOCAL CONTRACTOR FOR
FURTHER ASSISTANCE.
CT87B for a 5-wire heating/cooling system...
Owner's Manual - Page 9
CT87A,B,J ROUND® THERMOSTAT
7
Mount the thermostat
1. HEAT ANTICIPATOR INDICATOR
1.2
.6 .5 .4 .3 .2
HOLE SUITABLE FOR PENCIL POINT TO MOVE ...
4. Adjusting heat anticipator indicator. NOTE: These screws complete the installation of the thermostat. Fig. 14. Fig. 15. Pull off the thermostat cover and discard the red plastic insert that the three captive mounting screws align with...
Owner's Manual - Page 10
... below .3 ampere.
9 Check heating/cooling operation
Check heating
1. Turn the dial until the temperature on the setting scale (Fig. 16)
exceeds the room temperature that you could not find the anticipator setting on beyond the thermostat set temperature, move the anticipator pointer down by .1 ampere.
CT87A,B,J ROUND® THERMOSTAT
8
Set the heat anticipator for...
Owner's Manual - Page 11
... on the CT87J model.
2. Raise the temperature setting above room temperature.
IMPORTANT: After heating is below room temperature. CT87A,B,J ROUND® THERMOSTAT
Check cooling
IMPORTANT: To avoid damaging the compressor in the air conditioner, do not operate the cooling system when the outdoor temperature is tested, wait five minutes before switching to Cool.
Owner's Manual - Page 12
CT87A,B,J ROUND® THERMOSTAT
Limited One-Year Warranty
Honeywell warrants this product, excluding battery, to be to state. Honeywell's sole responsibility shall be free ...
69-0274-6 G.H. MN10-3860 1985 Douglas Drive North Golden Valley, MN 55422-3992
Honeywell Canada: Honeywell Limited/Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M1V 4Z9
This warranty does not cover...
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