Honeywell YCT87K1003 Support Question
Honeywell YCT87K1003 Support Question
Find answers below for this question about Honeywell YCT87K1003 - Round Heat Only Mercury Free Thermostat System.Need a Honeywell YCT87K1003 manual? We have 1 online manual for this item!
Question posted by victornowicki on December 10th, 2011
Honewell T87k Calibration
I have three units in the house. Each has different and wide disrepancies between actual temerature shown/maintained and its heat setting. How does one recalibrate the unit to bring these two control points into a closer range (problem e.g., set to 65 degs, maintains at actual shown temperature of 59 degs... etc....)
Current Answers
Related Honeywell YCT87K1003 Manual Pages
Installation Instructions - Page 1
...CT87A,B,J Round® Thermostat
LOW VOLTAGE (15 TO 30 VAC), THERMOSTAT AND MOUNTING HARDWARE
1 Verify that you have the correct thermostat
Using ...heat with electric air conditioning
Yes No
Single stage heat pump: Outdoor heating/cooling unit No (compressor) with auxiliary or backup heat. No
Yes
Electric heat furnace with or without cooling:
No
No
Yes
Electric baseboard: Electric heating...
Installation Instructions - Page 2
CT87A,B,J ROUND® THERMOSTAT
2
Prepare for your type of
MERCURY SWITCH IN A THERMOSTAT
system when you can be used to the heating/cooling system at the main fuse/circuit
breaker panel.
2. Save your old thermostat. sheet metal screws, two 1/2-in . can use a
TYPICAL LOCATION OF A
standard setting for installation
1. Gather these tools:
Required Tools
• Flat blade ...
Installation Instructions - Page 3
... in the trash.
Fig. 4. Disconnect the wires from the old
thermostat and wrap them around
a pencil to Fig. 4 as you work. M19086
MERCURY NOTICE
Fig. 3. Wrapping wires.
CT87A,B,J ROUND® THERMOSTAT
5.
Labeling wires. COVER RING
WALLPLATE
NO. 4 X 1 INCH SHEET METAL SCREWS (2)
3
THERMOSTAT WIRING OPENING
M20188
69-0274-6 Fig. 2.
WIRES THROUGH WALL OPENING
If this...
Installation Instructions - Page 4
... holes into the drilled holes. BINDING HEAD SCREW (2)
OUTLET BOX
1
2 COVER RING SUBBASE 1/4 IN. 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 FASTEN WITH SCREWS THROUGH "A". Use a pencil to the wall: Position so that the...
Installation Instructions - Page 5
... wallplate/subbase to the cover ring with two 1/2-in Fig. 6. To level the subbase, use the leveling posts directly below the Heat and Fan indicators. Leveling the wallplate. CT87A,B,J ROUND® THERMOSTAT
1.
rate thermostat temperature.
1.
Pull the wires through .
5. Place the cover ring against the outlet box so that the wallplate or subbase is...
Installation Instructions - Page 6
...Use the wiring cross-reference table below to both the B and O terminals.
2. Loosen the terminal screws and slip each old
thermostat wire with its matching terminal.
4. Push any excess wire back into the wall.
69-0274-6
6 Securely tighten the terminal screws.... 7). Fitting wires under the terminal screws.
FOR STRAIGHT CONNECTION- CT87A,B,J ROUND® THERMOSTAT
6
Wire the...
Installation Instructions - Page 7
...) R
3-WIRE
W
HOT WATER
ZONE VALVE
B M20184
Fig. 10. 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 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 CT87B for a 4-wire...
Installation Instructions - Page 8
...
COOL • OFF •
HEAT
FAN ON
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.
CT87J for 4-wire single stage heat pump.
CT87B for a 5-wire heating/cooling system. M20228
69-0274-6
8 CT87A,B,J ROUND® THERMOSTAT
Fig. 11.
Installation Instructions - Page 9
... indicator.
Using a pencil point, slide the heat anticipator indicator to 1.2 on the wallplate/subbase.
4.
Place the thermostat over the wallplate or subbase so that
holds the mercury switch in place during shipping.
2. Fig. 14. NOTE: These screws complete the installation of the thermostat. Fig. 15. HEAT ANTICIPATOR INDICATOR
1.2
.6 .5 .4 .3 .2
HOLE SUITABLE FOR PENCIL...
Installation Instructions - Page 10
... up by .1 ampere. NOTE: If the furnace stays on beyond the thermostat set the system switch to the number that is shown on the thermostat cover. Snap on the thermometer. CT87A,B,J ROUND® THERMOSTAT
8
Set the heat anticipator for your type of system shown in Step 3, sub-step 3. SETTING SCALE
69-0274-6
THERMOMETER
10
M9656 Turn the dial until the...
Installation Instructions - Page 11
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. Lower the temperature setting below 50°F (10°C).
1.
IMPORTANT: After heating is below room temperature. Both the heating and cooling...
Installation Instructions - Page 12
... implied warranty lasts, so the above . CT87A,B,J ROUND® THERMOSTAT
Limited One-Year Warranty
Honeywell warrants this product, excluding... call 1-800-468-1502. Honeywell's sole responsibility shall be free from defects in U.S.A. Some states do not allow limitations on...a short description of a consumer.
If the product is shown by Honeywell that the defect or malfunction was caused by ...
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