Honeywell CT87A Support Question
Honeywell CT87A Support Question
Find answers below for this question about Honeywell CT87A.Need a Honeywell CT87A manual? We have 1 online manual for this item!
Question posted by cmrodri75 on December 22nd, 2013
Replace Honeywell Ct87a Heat Only Thermostat With A Programable One
Is There A Programable Thermostat That Replaces Honeywell Ct87a Heat Only Thermostat?.
Current Answers
Related Honeywell CT87A Manual Pages
Owner's Manual - Page 1
... systems.
® U.S. 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 that you are unsure which model is compatible with no auxiliary or backup heat. No
No
* CT87A is right for your system, visit www.honeywell.com/ yourhome or...
Owner's Manual - Page 2
... if it is the current (amp)
MERCURY SWITCH
rating of your heating system. Optional if installing directly on the old thermostat, you can be used to . OLD THERMOSTAT ANTICIPATOR SCALE
Current setting: If you cannot find the heat
LEVER
anticipator setting on the wall; CT87A,B,J ROUND® THERMOSTAT
2
Prepare for your type of
MERCURY SWITCH IN...
Owner's Manual - Page 3
... the proper disposal of this thermostat is replacing a
control that came with ...the CT87. M19086
MERCURY NOTICE
Fig. 3. Wrapping wires.
Contact your old
control in a sealed tube.
4 Install the cover ring and wallplate or subbase
If installing on the wall
Refer to keep them from falling
back into the wall (Fig. 3). CT87A,B,J ROUND® THERMOSTAT...
Owner's Manual - Page 4
...• If attaching wallplate directly to the wall: Position so that the fan and heating/cooling switches are aligned and the two screw holes on the left and right sides...work. Fig. 5. Remove the wallplate/subbase and cover ring, and drill two 1/16-in . CT87A,B,J ROUND® THERMOSTAT
1. If using cover ring: Place the wallplate/subbase over the holes, pull the wires through ...
Owner's Manual - Page 5
...69-0274-6
To level the subbase, use the leveling posts directly below the Heat and Fan indicators. Leveling the wallplate. Align the screw slots on the ....
4. screws, through .
5. rate thermostat temperature.
1. Tighten the mounting screws after making sure that the wiring holes line up .
2. CT87A,B,J ROUND® THERMOSTAT
1. Loosely attach the wallplate/subbase to maintain ...
Owner's Manual - Page 6
...
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 underneath the terminal screws (Fig. 7). CT87A,B,J ROUND® THERMOSTAT
6
Wire the thermostat
1. Use the wiring cross-reference table below to match each wire beneath its...
Owner's Manual - Page 7
... system. CT87B for a 2-wire heating only system.
R
Y W
CT87A WALLPLATE
WIRE LABELS (LETTERS ON ORIGINAL THERMOSTAT TERMINALS) R
3-WIRE
W
HOT WATER
ZONE VALVE
B M20184
Fig. 10. CT87A for a 3-wire hot water heating only system. CT87A,B,J ROUND® THERMOSTAT
Fig. 8. CT87A WALLPLATE
R
Y W
POWER HEAT
TO SYSTEM
M20183
Fig. 9. COOL • OFF •
HEAT
FAN ON
RH G
RC...
Owner's Manual - Page 8
... O
1 IF WIRES ARE ATTACHED TO Y OR W, AND P ON YOUR OLD
THERMOSTAT, CONTACT YOUR LOCAL CONTRACTOR FOR
FURTHER ASSISTANCE. CT87J for a 5-wire heating/cooling system.
CT87B for a 4-wire single stage heat pump. CT87J for 4-wire single stage heat pump. CT87A,B,J ROUND® THERMOSTAT
Fig. 11. COOL • OFF •
HEAT
FAN ON
RH G
RC
Y W
AUTO •
CT87B SUBBASE...
Owner's Manual - Page 9
...heat anticipator indicator to 1.2 on the wallplate/subbase.
4. Tightening mounting screws. IMPORTANT: This prevents the thermostat from being damaged. Place the thermostat over the wallplate or subbase so that
holds the mercury switch in place during shipping.
2. Fig. 15.
Pull off the thermostat... thermostat. Tighten the three captive mounting screws as shown in Fig. 15. HEAT ...
Owner's Manual - Page 10
... system shown in Step 3, sub-step 3. SETTING SCALE
69-0274-6
THERMOMETER
10
M9656 Snap on beyond the thermostat set temperature, move the anticipator pointer down by .1 ampere. Turn the transparent dial to
maintain accurate temperature control.
1. CT87A,B,J ROUND® THERMOSTAT
8
Set the heat anticipator for your CT87 has a subbase, set the system switch to...
Owner's Manual - Page 11
CT87A,B,J ROUND® THERMOSTAT
Check cooling
IMPORTANT: To avoid damaging the compressor in the air conditioner, ... temperature. The cooling system should stop. CT87B, J switches
Switch System
Fan
Setting
Result
Cool Off
The thermostat controls your heating system. The fan runs continuously. The cooling system should start.
3.
Lower the temperature setting below 50&#...
Owner's Manual - Page 12
...other rights which occurred while the product was caused by the consumer.
CT87A,B,J ROUND® THERMOSTAT
Limited One-Year Warranty
Honeywell warrants this product, excluding battery, to you.
If you have other...consumer. This warranty shall not apply if it is defective or malfunctions, Honeywell shall repair or replace it , postage prepaid, to you may not apply to be to ...
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