Honeywell CT87B Support Question
Honeywell CT87B Support Question
Find answers below for this question about Honeywell CT87B.Need a Honeywell CT87B manual? We have 1 online manual for this item!
Question posted by jkimberley on January 25th, 2015
Convert Ct87b To Ct87k
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Current Answers
Answer #1: Posted by TechSupport101 on January 25th, 2015 12:08 PM
TechSupport101
Member since:
May 24th, 2013 Points: 12,171,305
Member since:
May 24th, 2013 Points: 12,171,305
Related Honeywell CT87B Manual Pages
Owner's Manual - Page 1
... Honeywell All Rights Reserved
69-0274-6 Installation Instructions
Compatible with:
Heating/Cooling system
CT87A CT87B CT87J
Heating only: Gas or oil fueled warm air, steam, or hot Yes water...or backup heat. 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 below, verify ...
Owner's Manual - Page 2
... use a
TYPICAL LOCATION OF A
standard setting for installation
1. Unscrew and remove the old thermostat wallplate from the wall, but do not disconnect the wires.
69-0274-6
2 Save your old thermostat. round head screws
• Wallplate (CT87A) or subbase (CT87B, CT87J)
• Cover ring (select models only). Remove the cover of your heating system...
Owner's Manual - Page 3
... that contains mercury in a
sealed tube, do not place your
M20133
local waste management authority
for instructions regarding recycling and the proper disposal of this thermostat is replacing a
control that came with the CT87. Contact your old
control in a sealed tube.
4 Install the cover ring and wallplate or subbase
If installing...
Owner's Manual - Page 4
... to the wall: Position so that the arrow in the middle of the wallplate or subbase.
4. Fig. 5.
ROUND HEAD SCREW (2)
A
THERMOSTAT WIRING HOLE
1 THE TWO INNER HOLES ARE USED WITH WALLPLATE.
2 IF OUTLET BOX IS HORIZONTAL, MOUNT COVER RING IN POSITION SHOWN, BUT ...shown).
1/2 IN. Remove the wallplate/subbase and cover ring, and drill two 1/16-in . CT87A,B,J ROUND® THERMOSTAT
1.
Owner's Manual - Page 5
...to the outlet box with two 1/4in.
SPIRIT LEVEL
LEVELING POSTS (2)
OPENING FOR THERMOSTAT WIRING
MOUNTING SLOTS
M3319A
2. screws.
4. screws, through the wiring hole on the ...leveling posts directly below the Heat and Fan indicators. Fig. 6. CT87A,B,J ROUND® THERMOSTAT
1. Loosely attach the wallplate/subbase to maintain accu- Rotate the wallplate/subbase until level ...
Owner's Manual - Page 6
...Fitting wires under the terminal screws.
CT87A,B,J ROUND® THERMOSTAT
6
Wire the thermostat
1. Securely tighten the terminal screws. 5. Use the ... 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 both the B and O terminals.
2. Push any excess wire back into the ...
Owner's Manual - Page 7
... WALLPLATE
R
Y W
POWER HEAT
TO SYSTEM
M20183
Fig. 9.
CT87B for a 2-wire heating only system. CT87A,B,J ROUND® THERMOSTAT
Fig. 8.
R
Y W
CT87A WALLPLATE
WIRE LABELS (LETTERS ON ORIGINAL THERMOSTAT TERMINALS) R
3-WIRE
W
HOT WATER
ZONE VALVE
B M20184
Fig. 10. COOL • OFF •
HEAT
FAN ON
RH G
RC
Y W
AUTO •
CT87B SUBBASE
POWER FAN COOL
TO SYSTEM
HEAT...
Owner's Manual - Page 8
...
HEATING POWER
FAN
TO SYSTEM
COOLING POWER
TO SYSTEM
COOL
HEAT
Fig. 12. CT87J for 4-wire single stage heat pump.
CT87A,B,J ROUND® THERMOSTAT
Fig. 11. CT87B for a 5-wire heating/cooling system.
CT87J SUBBASE
HEAT
FAN ON
FAN
COOL • OFF •
AUTO •
POWER
WG
1Y
P
R
B
O
HEAT REVERSING
VALVE
COOL REVERSING...
Owner's Manual - Page 9
...Fig. 14.
CAPTIVE SCREWS (3)
M20227
9
69-0274-6 Pull off the thermostat cover and discard the red plastic insert that the three captive mounting screws align... to 1.2 on the wallplate/subbase.
4. IMPORTANT: This prevents the thermostat from being damaged. NOTE: These screws complete the installation of the thermostat.
Fig. 14. Adjusting heat anticipator indicator. Fig. 15.
Tighten ...
Owner's Manual - Page 10
...
2. Turn the dial until the temperature on the setting scale is shown on beyond the thermostat set temperature is shown on the setting scale (Fig. 16)
exceeds the room temperature that you... before the set temperature, move the anticipator pointer up by .1 ampere. CT87A,B,J ROUND® THERMOSTAT
8
Set the heat anticipator for your type of system shown in Step 3, sub-step 3....
Owner's Manual - Page 11
...stop. Raise the temperature setting above room temperature.
CT87B, J switches
Switch System
Fan
Setting
Result
Cool Off
The thermostat controls your heating system.
If your CT87 has... with the desired temperature.
The cooling system should start.
3.
Heat On Auto
The thermostat controls your cooling system. The fan runs continuously. Operation
To set the System switch ...
Owner's Manual - Page 12
...
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North
35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario
M1V 4Z9
69-0274-6 G.H. CT87A,B,J ROUND® THERMOSTAT
Limited One-Year Warranty
Honeywell warrants this product, excluding battery, to be to repair or replace the product within a reasonable period of time. USA Dock...
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