Honeywell CT3650 User Manual

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69- 1285- 2
OWNER’S GUIDE
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istered Trademark
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ht © 2001 Hone
y
well • •All Ri
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Honeywell CT3650
PROGRAMMABLE THERMOSTAT
Seven Da
y
Pro
g
rammable Heat and/or Cool
Low Volta
g
e
(
20 to 30 Vac
)
Thermostat and Wallplate
Model CT3650
Para pedir estas instrucciones en español, llame al 1-800-468-1502.
Pour obtenir ce ode demploi en fran
ç
ais, composer le 1-800-468-1502.
Table of Contents
Step 1. Prepare for Installation ................................................................................................................................... 5
Step 2. Remove Old Thermostat ................................................................................................................................ 6
Step 3. Mount thermostat Wallplate ........................................................................................................................... 7
Step 4. Wire Wallplate Terminals ................................................................................................................................ 8
Step 5. Install the Batteries ........................................................................................................................................ 9
Step 6. Mount the Thermostat .................................................................................................................................... 10
Step 7. Customize Your Thermostat ........................................................................................................................... 11
Step 8. Set the Clock .................................................................................................................................................. 13
Step 9. Pro
g
rammin
g
................................................................................................................................................. 13
Step 10. Operatin
g
Your Thermostat .......................................................................................................................... 17
Step 11. Set the Fan and S
y
stem Ke
y
....................................................................................................................... 18
If You Have a Problem ................................................................................................................................................ 19
Smart Response™ Technolo
gy
.................................................................................................................................. 20
Wirin
g
Dia
g
rams ......................................................................................................................................................... 21

Honeywell CT3650 Specifications

General

Category	Thermostat
Model	CT3650
Display	LCD
Backlight	Yes
Wi-Fi Connectivity	Yes
Mobile App	Honeywell Home App
Type	Programmable
Power Source	Battery
Battery Type	AA
Temperature Range	40°F to 90°F
Temperature Control	Programmable
Dimensions	5.5 x 3.5 x 1.0 inches
Weight	0.5 lbs
Voice Control	Amazon Alexa, Google Assistant
Energy Saving Features	Programmable schedules

Summary

STEP 1. PREPARE FOR INSTALLATION

STEP 2. REMOVE OLD THERMOSTAT

Special Installations

Special considerations for removing older or complex thermostats, including specific wire configurations.

Replacing a Clock Thermostat that has C or C1 Clock Terminals

Instructions for replacing specific clock thermostat models with C or C1 terminals to avoid damage.

Thermostat that has six or More Wires

Guidance for removing thermostats with six or more wires, including labeling and handling.

STEP 3. MOUNT THERMOSTAT WALLPLATE

STEP 4. WIRE WALLPLATE TERMINALS

STEP 5. INSTALL THE BATTERIES

STEP 6. MOUNT THE THERMOSTAT

STEP 7. CUSTOMIZE YOUR THERMOSTAT

Fan Operation (Feature Number 2)

Configure fan operation settings (0=furnace, 1=heat pump) for different heating system types.

STEP 8. SET THE CLOCK

STEP 9. PROGRAMMING

STEP 10. OPERATING YOUR THERMOSTAT

Change Temperature Setting Until the Next Program Period (Temporary Change)

Temporarily adjust temperature setting until the next scheduled program period begins.

Change Temperature Setting Indefinitely (Hold)

Set a constant temperature hold indefinitely, overriding the programmed schedule.

Change the Temperature Setting Until a Designated Day and Period (Vacation Hold)

Set a specific temperature for a defined period, useful for vacations.

STEP 11. SET THE FAN AND SYSTEM KEY

Set the Fan Key

Configure the fan operation mode to either 'On' for continuous operation or 'Auto' for automatic control.

Set the System Key

Select the system operating mode: 'Heat' for heating, 'Cool' for cooling, or 'Off'.

IF YOU HAVE A PROBLEM

Toll-Free Customer Assistance

SMART RESPONSEM TECHNOLOGY

WIRING DIAGRAMS

Limited One-Year Warranty