Honeywell CT87N Heat-Cool Round Non Programmable Thermostat Owner’s Manual

June 9, 2024
Honeywell

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Honeywell CT87N Heat-Cool Round Non Programmable Thermostat

Getting started

Check package contents:

  • Thermostat
  • Large print subbase switch labels
  • Coverplate
  • Wall anchors & screws (2 each)
  • Wire labels
  • Braille Card

Thermostat is for 24 Vac heating and cooling systems

This thermostat contains a Lithium battery which may contain Perchlorate material. Perchlorate Material—special handling may apply, See www.dtsc.ca.gov/hazardouswaste/perchlorate

Before you begin, make sure you have:

  • No. 2 Phillips & small pocket screwdrivers
  • Hammer
  • Level (optional)
  • Pencil
  • Drill and bit (3/16” for drywall, 7/32” for plaster)

Remove your old thermostat

CAUTION: TURN OFF POWER
Turn off power to system at the furnace, or at the fuse/circuit breaker panel before you begin.
Remove cover and thermostat, but leave wallplate with wires attached

Leave wallplate in placeHoneywell-CT87N-Heat-Cool-Round-Non-Programmable-
Thermostat-fig- \(1\)

MERCURY NOTICE
If your old thermostat contains mercury, contact your local waste management authority for proper disposal instructions.

Label wires and remove old wallplate

Use a screwdriver to disconnect wires one by one. As you disconnect each wire, wrap it with the label matching the letter on your old thermostat. (Adhesive labels are supplied in your thermostat package.)
Remove the old wallplate only after all wires are labeled. Be careful not to let loose wires fall into the wall openingHoneywell-CT87N-Heat-Cool-Round-
Non-Programmable-Thermostat-fig- \(2\)

IGNORE WIRE COLORS : Use only letter designations to identify wire types.
If your old thermostat has 7 or more wires (not counting terminals C or C1), you may have purchased the wrong replacement thermostat. Stop now and call 1-800-468- 1502 for advice.

Mount thermostat base

Honeywell-CT87N-Heat-Cool-Round-Non-Programmable-
Thermostat-fig- \(3\)

Subbase and base installation

  1. Pull wires through wire hole. Position coverplate on wall, level and mark hole positions.
  2. Drill holes (3/16” for drywall, 7/32” for plaster) and tap in supplied wall anchors.
  3. Pull wire through coverplate and subbase, position over anchors, then insert and tighten mounting screws. Check level if desired.
  4. Apply the large-print labels to the coverplate, matching the labels on the subbase.

Wiring

  1. Match each labeled wire with same letter on terminal.
  2. Use a screwdriver to loosen screw terminals, insert bare wire into slots, then tighten screws.
  3. Push any excess wire back into the wall opening

Labels don’t match?
If labels do not match letters on thermostat, see table below.Honeywell-
CT87N-Heat-Cool-Round-Non-Programmable-Thermostat-fig-
10

  1. If wires will be connected to both R and Rc terminals, remove metal jumper.
  2. Do not connect both O and B if you have a heat pump. Connect only the O wire. Wrap B wire with electrical tape and do not use.
  3. Do not use C, X or B. Wrap bare end of wire with electrical tape.
  4. If you have two wires, connect wires to R and W.

Fan operation settings

Move the switch to the proper setting for your system:

  • F: For gas or oil heating systems, leave the fan operation switch in this factoryset position (for systems that control the fan in a call for heat).
  • E: Change the switch to this setting for heat pump or electric heat systems.
    (This setting is for systems that allow the thermostat to control the fan in a call for heat, if a fan wire is connected to the G terminal.)

Cycle rate settings

Honeywell-CT87N-Heat-Cool-Round-Non-Programmable-
Thermostat-fig- 11

Thermostat mounting

  1. Align the slots on the base with tabs on the thermostat, then push gently until the thermostat snaps into place.
  2. Restore electrical power at the heating/cooling system, or at the fuse/circuit-breaker panel

Operation

Honeywell-CT87N-Heat-Cool-Round-Non-Programmable-Thermostat-
fig- \(9\)

CAUTION : EQUIPMENT DAMAGE HAZARD
Do not operate cooling system when outdoor temperature is below 50

Warranty

1-year limited warranty

Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of one (1) years from the date of purchase by the consumer. If at any time during the warranty period the product is determined to be defective or malfunctions, Honeywell shall repair or replace it (at Honeywell’s option).
If the product is defective,

  • return it, with a bill of sale or other dated proof of pur-chase, to the place from which you purchased it; or
  • call Honeywell Customer Care at 1-800-468-1502. Cus-tomer Care will make the determination whether the prod-uct should be returned to the following address: Honeywell Return Goods, Dock 4 MN10-3860, 1885 Douglas Dr. N., Golden Valley, MN 55422, or whether a replacement prod-uct can be sent to you.

This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the pos-session of a consumer. Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above. HONEYWELL SHALL NOT BE LIABLE FOR ANY LOSS OR DAM-
AGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states do not allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. THE DURA-TION OF ANY IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE ONE-YEAR DURATION OF THIS WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state.
If you have any questions concerning this warranty, please write Honeywell Customer Relations, 1985 Douglas Dr., Golden Valley, MN 55422 or call 1-800-468-1502. In Canada, write Retail Products ON15-02H, Honeywell Lim-ited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.

Need Help?
For assistance with this product please visit http://yourhome.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502

Automation and Control Solutions

Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée 35 Dynamic Drive
Toronto, Ontario M1V 4Z9
http://yourhome.honeywell.com

Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers.
® U.S. Registered Trademark.
© 2009 Honeywell International Inc. 69-1919EFS—04 M.S. Rev. 10-09

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