Honeywell Home The Round CT87N User Manual

Owner’s Manual
English: Page 1
Mode d’emploi
Français : Page 6
Manual de Uso
Español: Página 11
CT87N/CT87K
The Round
®
® 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.
M37778
69-1959EFS-04
The Round
®
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.
MERCURY NOTICE
If your old thermostat contains
mercury, contact your local waste
management authority for proper
disposal instructions.
Is there a sealed tube containing
mercury? If so, see mercury notice
below.
Leave wallplate in place.
Old thermostat
Cover
Check package contents:
• Thermostat
• Coverplate
• Wall anchors & screws (2 each)
• Wire labels
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)
Getting started
Remove your old thermostat
CT87K (24 Vac heating systems) • CT87N (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

Honeywell Home The Round CT87N Specifications

General

Brand	Honeywell Home
Model	The Round CT87N
Category	Thermostat
Language	English

Summary

Getting started

Remove your old thermostat

Mercury notice

Information on proper disposal of thermostats containing mercury.

Label wires and remove old wallplate

Ignore wire colors

Use letter designations to identify wire types, not colors.

Wire count advisory

Advisories for CT87N/CT87K regarding wire count and replacement issues.

Mark mounting position

Mount thermostat base

Connect wires

Wire labeling issues

Guidance for connecting wires when labels do not match thermostat terminals.

CT87N wiring guide

Instructions for CT87N wiring, including jumper and unused wire handling.

CT87K wiring guide

Instructions for CT87K wiring for 2-wire and 3-wire systems.

Electrical ratings

Technical specifications for thermostat voltage and running current.

Set fan operation switch (CT87N)

Set cycle rate switches

Finish installation

Operation

System switch (CT87N)

Controls for cooling, heating, and off modes of the thermostat system.

Fan switch (CT87N)

Controls for continuous or automatic fan operation based on cycles.

Temperature setting

Instructions on how to adjust the thermostat to the desired indoor temperature.

Equipment damage caution

Warning against operating cooling system below 50°F (10°C) to prevent damage.

1-year limited warranty