Honeywell CT87N The Round Non Programmable Thermostat Owner’s Manual
Owner’s Manual
English: Page 1
Mode d’emploi
Français : Page 6
Manual de Uso
Español: Página 11
M37778
CT87N/CT87K
The Round®
CT87K (24 Vac heating systems) • CT87N (24 Vac heating and cooling systems)
Getting started
Check package contents:
Before you begin, make sure
you have:
•
•
•
•
Thermostat
Coverplate
Wall anchors & screws (2 each)
Wire labels
•
No. 2 Phillips & small pocket
screwdrivers
•
•
•
•
Hammer
Level (optional)
Pencil
Drill and bit (3/16” for drywall, 7/32”
for plaster)
This thermostat contains a Lithium battery which
may contain Perchlorate material.
Perchlorate Material—special handling may apply,
Remove your old thermostat
1. CAUTION TURN OFF POWER to system at the furnace, or at the fuse/circuit
breaker panel before you begin.
2. Remove cover and thermostat, but leave wallplate with wires attached.
Leave wallplate in place.
Is there a sealed tube containing
mercury? If so, see mercury notice
below.
MERCURY NOTICE
If your old thermostat contains
mercury, contact your local waste
management authority for proper
disposal instructions.
®
The Round
Old thermostat
Cover
® U.S. Registered Trademark. U.S. Patents 7,159,789;
7,159,790; 7,476,988 and other patents pending.
Copyright © 2019, Resideo Technologies, Inc.
All rights reserved.
69-1959EFS-04
| General | Details |
|---|---|
| Name | Honeywell CT87N The Round Non Programmable Thermostat Owner’s Manual |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 3.3 MB |

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Honeywell CT87N Manual: Questions and Answers
How do I connect wires to the terminal block?
Match each labeled wire to its terminal letter, loosen the screw, insert the bare wire, and tighten. Owner's Manual, p. 3
What's the correct way to install the Honeywell CT87N on the wall?
Pull wires through the base, mark screw holes, drill at those locations, tap in anchors, then mount the base with screws.
- Pull wires through the thermostat base.
- Mark both screw hole positions on the wall.
- Drill holes at marked locations (3/16" for drywall, 7/32" for plaster).
- Tap anchors into holes until flush with the wall.
- Position the base over anchors and insert mounting screws, then tighten. Owner's Manual, p. 3
What does the Cool setting mean on the Honeywell CT87N system switch?
Controls the cooling system. Owner's Manual, p. 5




























