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Popular Honeywell CT87B Manual Pages
Owner's Manual - Page 1
... Trademark Copyright © 2002 Honeywell All Rights Reserved
69-0274-6
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 2-wire cooling-only systems.
® U.S.
No
No
* CT87A is right for your...
Owner's Manual - Page 2
....
• These Installation Instructions and the Installation Quick Guide.
• Wiring labels
2. You may affect its
accuracy. This is locked on.
3. rough handling may need to . Unscrew and remove the old thermostat wallplate from the wall, but do not disconnect the wires.
69-0274-6
2 Save your heating system. CT87A,B,J ROUND® THERMOSTAT
2
Prepare for...
Owner's Manual - Page 3
... of the terminal on the wall (wallplate shown).
CT87A,B,J ROUND® THERMOSTAT
5. stat (Fig. 2). Installing wallplate/subbase on the old thermo- Wrapping wires. Label the wires using the letter
of an old control containing mercury in a
sealed tube, do not place your
M20133
local waste management authority
for instructions regarding recycling and the proper disposal of this...
Owner's Manual - Page 4
...CT87A,B,J ROUND® THERMOSTAT
1. screws into the wall. • If attaching wallplate directly to the wall: Position so that the arrow in the middle of the wallplate/subbase align with the screw holes on the top.
3. Installing... 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 ...
Owner's Manual - Page 5
CT87A,B,J ROUND® THERMOSTAT
1. Align the screw slots on the cover ring with the outlet box screw holes, and attach the cover ring to the outlet box with two 1/4in. screws.
4. Rotate the wallplate/subbase until level as shown in . Fig. 6. Tighten the mounting screws after making sure that the wiring holes line up .
2. Place...
Owner's Manual - Page 6
...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).
Loosen the terminal screws and slip each old
thermostat wire with its matching terminal.
4. CT87A,B,J ROUND® THERMOSTAT
6
Wire the thermostat
1. Strip the wire insulation as needed to...
Owner's Manual - Page 7
... WATER
ZONE VALVE
B M20184
Fig. 10.
CT87B for a 3-wire hot water heating only system. 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 CT87A,B,J ROUND® THERMOSTAT
Fig. 8. CT87A WALLPLATE
R
Y W
POWER HEAT
TO SYSTEM
M20183
Fig...
Owner's Manual - Page 8
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 POWER
TO SYSTEM
COOL
HEAT
Fig. 12.
CT87J for 4-wire single stage heat pump. M20225
COOL • OFF •
HEAT
FAN ON
WG
Y
P
R
B
O
JUMPER W TO Y
AUTO •
CT87J SUBBASE
HEAT FAN...
Owner's Manual - Page 9
CT87A,B,J ROUND® THERMOSTAT
7
Mount the thermostat
1.
Adjusting heat anticipator indicator.
Fig. 15.
NOTE: These screws complete the installation of the thermostat. IMPORTANT: This prevents the thermostat from being damaged. 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 ...
Owner's Manual - Page 10
... furnace shuts off before the set temperature, move the heat anticipator pointer to the number that you could not find the anticipator setting on the thermostat cover. Turn the dial until the temperature on the thermometer.
NOTE: If the furnace stays on beyond the thermostat set temperature is below .3 ampere.
9 Check heating/cooling operation
Check heating
1. CT87A,B,J ROUND...
Owner's Manual - 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 on the left to Cool. If your CT87 has a subbase, set the temperature, turn the dial until the pointer on the...
Owner's Manual - Page 12
...
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 4 - THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. If you have other dated proof...
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