CT50 Series Thermostat
Vertical Mount:
CT50 (24 Vac heating systems)
CT51 (24 Vac heating and cooling systems)
CT53 (750 mV or 12Vdc heating systems)
Temperature Control Range
•
45°–95°F (7°–35°C)
•
35°–85°F (2°–29°C); select models; for garages or other outbuildings.
Getting started
Check package contents:
•
Thermostat
•
Wall anchors & screws (2 each)
•
Wire labels
Remove your old thermostat
TURN OFF POWER at heating/cooling system (or fuse/circuit-breaker panel).
Remove cover and thermostat, but leave wallplate with wires attached.
Leave wallplate in place.
Old thermostat
® U.S. Registered Trademark. Patents pending.
Copyright © 2019 Honeywell International Inc.
All rights reserved.
Horizontal Mount:
CT54 (24 Vac heating systems)
CT55 (24 Vac heating and cooling systems)
Before you begin, make sure you have:
•
•
•
•
•
Is there a sealed tube containing mercury?
If so, see mercury notice below.
Cover
M23786
Owner's Manual
English: Page 1
Mode d'emploi
Français : Page 6
Manual de Uso
Español: Página 11
Read and save these instructions
No. 2 Phillips & small pocket
screwdrivers
Hammer
Level (optional)
Pencil
Drill and bit (3/16" for drywall, 7/32" for
plaster)
MERCURY NOTICE
If your old thermostat contains
mercury, contact your local waste
management authority for proper
disposal instructions.
69-2040EFS-04