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 tannmadgal on June 16th, 2014
How To Wire A Honeywell Ct87a Thermostat
The person who posted this question about this Honeywell product did not include a detailed explanation. Please use the "Request More Information" button to the right if more details would help you to answer this question.
Current Answers
Related Honeywell CT87A Manual Pages
Owner's Manual - Page 1
... 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 2-wire cooling-only systems.
® U.S.
No
No
* CT87A is right for your system, visit www.honeywell.com/ yourhome or call Honeywell Customer Care at 1-800-468-1502. If you purchased the...
Owner's Manual - Page 2
... adjustment scale and lever on the wall; Mercury switch location. Unscrew and remove the old thermostat wallplate from the wall, but do not disconnect the wires.
69-0274-6
2 sheet metal screws, two 1/2-in . round head screws
• Wallplate (CT87A) or subbase (CT87B, CT87J)
• Cover ring (select models only).
In the box below...
Owner's Manual - Page 3
... on the wall (wallplate shown).
Wrapping wires. COVER RING
WALLPLATE
NO. 4 X 1 INCH SHEET METAL SCREWS (2)
3
THERMOSTAT WIRING OPENING
M20188
69-0274-6
Do not label the wires
by color.
6. Fig. 4. stat (Fig. 2).
Fig. 2. Label the wires using the letter
of this thermostat is replacing a
control that came with the CT87. CT87A,B,J ROUND® THERMOSTAT
5. Labeling wires.
Owner's Manual - Page 4
...Installing wallplate/subbase on the cover ring. If using cover ring: Place the wallplate/subbase over the holes, pull the wires through these holes into the drilled holes. BINDING HEAD SCREW (2)
OUTLET BOX
1
2 COVER RING SUBBASE 1/4 IN. Position... screw holes on an outlet box (subbase shown).
1/2 IN. CT87A,B,J ROUND® THERMOSTAT
1. Use a pencil to Fig. 5 as you marked.
5.
Owner's Manual - Page 5
... attach the wallplate/subbase to maintain accu- To level the subbase, use the leveling posts directly below the Heat and Fan indicators. CT87A,B,J ROUND® THERMOSTAT
1. screws, through the wiring hole on the left side of the wallplate/subbase.
5
Level the wallplate or subbase
IMPORTANT: The wallplate/subbase must be level to the...
Owner's Manual - Page 6
... tighten the terminal screws. 5. CT87A,B,J ROUND® THERMOSTAT
6
Wire the thermostat
1. Fitting wires under the terminal screws. FOR STRAIGHT CONNECTION- STRIP 7/16 in . [8 mm]
FOR WRAPAROUND CONNECTION- Strip the wire insulation as needed to match each wire beneath its corresponding terminal on the CT87 wallplate
or subbase. Fig. 7.
Push any excess wire back into the wall.
69...
Owner's Manual - Page 7
... only system. CT87B for a 4-wire heating/cooling system.
COOL • OFF •
HEAT
FAN ON
RH G
RC
Y W
AUTO •
CT87B SUBBASE
POWER FAN COOL
TO SYSTEM
HEAT
JUMPER RH TO RC
M20185
7
69-0274-6 CT87A WALLPLATE
R
Y W
POWER HEAT
TO SYSTEM
M20183
Fig. 9. R
Y W
CT87A WALLPLATE
WIRE LABELS (LETTERS ON ORIGINAL THERMOSTAT TERMINALS) R
3-WIRE
W
HOT WATER
ZONE VALVE...
Owner's Manual - Page 8
...
WG
Y
P
R
B
O
JUMPER W TO Y
AUTO •
CT87J SUBBASE
HEAT FAN
TO SYSTEM
POWER
COOL REVERSING VALVE
HEAT REVERSING VALVE
DO NOT ATTACH WIRES TO BOTH B AND O M20186
Fig. 13. CT87A,B,J ROUND® THERMOSTAT
Fig. 11.
COOL • OFF •
HEAT
FAN ON
RH G
RC
Y W
AUTO •
CT87B SUBBASE
HEATING POWER
FAN
TO SYSTEM
COOLING...
Owner's Manual - Page 9
... This prevents the thermostat from being damaged. ...thermostat cover and discard the red plastic insert that the three captive mounting screws align with the three raised screw holes on the
scale as shown in Fig. 14. Place the thermostat over the wallplate or subbase so that
holds the mercury switch in place during shipping.
2.
CT87A,B,J ROUND® THERMOSTAT
7
Mount the thermostat...
Owner's Manual - Page 10
... heat
Heat anticipator setting: 1.2 0.8 0.8 0.4 0.3
2. Snap on beyond the thermostat set temperature, move the heat anticipator pointer to the farthest point left. 2. Turn.... If your system
IMPORTANT: Setting the heat anticipator allows the thermostat to
maintain accurate temperature control.
1. CT87A,B,J ROUND® THERMOSTAT
8
Set the heat anticipator for your type of system shown...
Owner's Manual - Page 11
... below room temperature. CT87B, J switches
Switch System
Fan
Setting
Result
Cool Off
The thermostat controls your CT87 has a subbase, set the temperature, turn the dial until the ... fan runs continuously. Heat On Auto
The thermostat controls your heating system. The cooling system should start.
3. CT87A,B,J ROUND® THERMOSTAT
Check cooling
IMPORTANT: To avoid damaging the ...
Owner's Manual - Page 12
... FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE ONE YEAR DURATION OF THIS WARRANTY. If, at least 10% www.honeywell.com/yourhome
post-consumer paper fibers.
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.
Similar Questions
How To Install A 2 Wire Honeywell Thermostat Th3110d1008
(Posted by andrejon 9 years ago)
Replace Honeywell Ct87a Heat Only Thermostat With A Programable One
Is There A Programable Thermostat That Replaces Honeywell Ct87a Heat Only Thermostat?.
Is There A Programable Thermostat That Replaces Honeywell Ct87a Heat Only Thermostat?.
(Posted by cmrodri75 10 years ago)
Wiring Honeywell Thermostat T8011r, Honeywell Website Can Not Find Manual.
(Posted by chenninger72 11 years ago)
Can A Model Ct 87n Wire Directly Up To Where A Model Ct87a Is With No Jumping Or
(Posted by japroct 12 years ago)