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Honeywell Home CT50 Series Thermostat Owner’s Manual

Owner’s Manual  
English: Page 1  
Mode d’emploi  
Français : Page 6  
Manual de Uso  
Español: Página 11  
CT50 Series Thermostat  
Read and save these instructions  
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  
GeneralDetails
NameHoneywell Home CT50 Series Thermostat Owner’s Manual
MakeHoneywell Home
LanguageEnglish
FiletypePDF (Download)
File size1.03 MB
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Honeywell Home CT50 Series Thermostat Owner’s Manual
Get the free PDF manual for the Honeywell Home CT50 Series Thermostat Owner’s Manual and access setup steps, usage instructions, and troubleshooting tips. 👉 View online or download now to keep your thermostat running smoothly!

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.

  1. For steam systems, set to 1.2.
  2. For hot water heat or warm air high efficiency systems, set to 0.8.
  3. For warm air standard systems, set to 0.4.
  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

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