Honeywell CT50 - Manual

Owner’s Manual
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CT50 Series
Thermostat
® U.S. Registered Trademark. Patents pending.
Copyright © 2009 Honeywell International Inc.
All rights reserved.
M23785
69-2040EFS-01
M23786
MERCURY NOTICE
If your old thermostat contains
mercury, contact your local waste
management authority for proper
disposal instructions.
TURN OFF POWER at heating/cooling system (or fuse/circuit-breaker panel).
Remove cover and thermostat, but leave wallplate with wires attached.
Temperature Control Range
• 45°–95°F (7°–35°C)
• 35°–85°F (2°–29°C); select models; for garages or other outbuildings.
Is there a sealed tube containing mercury?
If so, see mercury notice below.
Leave wallplate in place.
Old thermostat
Cover
Check package contents:
• Thermostat
• 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
Vertical Mount:
CT50 (24 Vac heating systems)
CT51 (24 Vac heating and cooling systems)
CT53 (750 mV or 12Vdc heating systems)
Horizontal Mount:
CT54 (24 Vac heating systems)
CT55 (24 Vac heating and cooling systems)