Owner’s Manual
English: Page 1
Mode d’emploi
Français: Page 6
Manual de Uso
Español: Página 11
CT87N
Easy-To-See
TM
The Round
®
® U.S. Registered Trademark. U.S. Patents 7,159,789;
7,159,790; 7,476,988 and other patents pending.
Copyright © 2009, Honeywell International Inc.
All rights reserved.
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69-1919EFS-04
The Round
®
Easy-To-See
TM
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.
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
• Large print subbase switch labels
• Coverplate
• Wall anchors & screws (2 each)
• Wire labels
• Braille Card
Thermostat is for 24 Vac heating and
cooling systems
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
This thermostat contains a Lithium battery which may contain Perchlorate material.
Perchlorate Material—special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate
