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Honeywell Home CT50 Series Thermostat Owner’s Manual
Owner’s Manual
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Manual de Uso
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CT50 Series Thermostat
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Vertical Mount:
Horizontal Mount:
CT54 (24 Vac heating systems)
CT55 (24 Vac heating and cooling systems)
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:
Before you begin, make sure you have:
•
•
•
Thermostat
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)
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.
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.
Old thermostat
M23786
Cover
® U.S. Registered Trademark. Patents pending.
Copyright © 2019 Honeywell International Inc.
All rights reserved.
69-2040EFS-04
| General | Details |
|---|---|
| Name | Honeywell Home CT50 Series Thermostat Owner’s Manual |
| Make | Honeywell Home |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.03 MB |

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Honeywell CT50 Manual: Questions and Answers
How do I set the heat anticipator on the Honeywell CT50?
Locate the heat anticipator adjustment on the thermostat base and move the arrow to match your system type.
- For steam systems, set to 1.2.
- For hot water heat or warm air high efficiency systems, set to 0.8.
- For warm air standard systems, set to 0.4.
- For electric heat systems, set to 0.3. Owner's Manual, p. 4
Can I use the Honeywell CT50 with a heat pump system?
The CT50 and CT53 are for heating only. Use the CT51 or CT55 model for heat pump or cooling systems. If you have 7 or more wires, you may have purchased the wrong thermostat; call 1-800-468-1502. Owner's Manual, p. 1
What do the System switch buttons control on the Honeywell CT50?
Heat turns on the heating system. Off shuts down all systems. Cool activates the cooling system on CT51/CT55 models. Owner's Manual, p. 5




























