Honeywell CT3650 manual Mount the Thermostat

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When the batteries are running low, a REPL BAT message flashes for one to two months before the batteries run out completely. Replace the batteries as soon as possible once the message flashes.

IMPORTANT

Although the thermostat has a low battery indicator, replace the batteries once per year to prevent leakage and to prevent the ther- mostat and heating/cooling system from shutting down due to lack of battery power in the thermostat.

If you insert new batteries within 20 to 30 seconds of removing the old batteries, the system retains the current time and day. If the display is blank, the batteries are dead or installed incorrectly. You must reset the time and day. Refer to Set the Clock for instructions.

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As a precaution when leaving home for longer than a month, change batteries before leaving to prevent the system from shutting down due to lack of power. Always use fresh alkaline batteries. Nonalkaline batteries do not last as long. They also can leak, causing damage to the thermostat and the wall surface. Honeywell recommends Energizer® batteries.

STEP 6. MOUNT THE THERMOSTAT

A.ENGAGE TABS AT TOP OF THERMOSTAT

AND WALLPLATE.

B.PRESS LOWER EDGE OF CASE TO LATCH.

M12703

69-1285—2

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Contents Table of Contents Honeywell CT3650Mercury Notice 69-1285-2 DST Prepare for Installation Compatibility Chart System Type Compatibility with CT3650Special Installations Remove OLD ThermostatMount Thermostat Wallplate Wire Wallplate Terminals Install the Batteries Connect To DescriptionMount the Thermostat Fan Operation Feature Number Customize Your ThermostatSmart Response Technology Feature Number Programming SET the ClockSet Current Day and Time Mon Tue Wed Thu Fri Sat Sun Program the First Day Copy a Day Clear a Program PeriodOperating Your Thermostat Change Temperature Setting Indefinitely HoldDaylight Savings Time Key Set the Fan Key SET the FAN and System KEYSet the System Key If YOU have a Problem Then…Smart Response Technology Toll-Free Customer AssistanceWiring Diagrams Wire HEAT-ONLY Jumper IntactWire HEAT/COOL Limited One-Year Warranty Home and Building Control

CT3650 specifications

The Honeywell CT3650 is a state-of-the-art thermostat designed for optimum home climate control. This versatile device integrates advanced technology with user-friendly features, making it an ideal choice for homeowners seeking convenience and efficiency in temperature regulation.

One of the primary features of the CT3650 is its Wi-Fi connectivity. This allows users to control their home heating and cooling systems remotely via a smartphone app, providing flexibility and ease of use. Whether at work or on vacation, homeowners can adjust their thermostat settings from anywhere, ensuring comfort upon their return and promoting energy savings while away.

The CT3650 incorporates a color touchscreen display, offering an intuitive interface that makes navigation straightforward. Users can easily set schedules, view current conditions, and make adjustments with a simple tap. The vibrant display also allows for customizable color options, enhancing its aesthetic appeal to fit seamlessly into any home decor.

Another noteworthy characteristic of the Honeywell CT3650 is its Smart Response Technology. This feature learns the heating and cooling behaviors of the home and adjusts the temperature in advance to reach the desired setting by the programmed time. This not only enhances comfort but also increases energy efficiency, helping to reduce utility bills.

The CT3650 thermostat is compatible with various heating and cooling systems, including multi-stage systems, gas, electric, and heat pump configurations. This versatility ensures that homeowners can utilize the CT3650 with their existing systems without additional modifications.

Energy-saving capabilities are a highlight of the CT3650. It features an Adaptive Intelligent Recovery function, which calculates the optimal run time for the system to reach the target temperature at the scheduled time. This minimizes energy waste and maximizes efficiency, contributing to a more sustainable home environment.

Furthermore, the Honeywell CT3650 facilitates easy installation and setup. With straightforward wiring and setup instructions, users can quickly integrate the thermostat into their existing HVAC systems without requiring professional assistance.

In conclusion, the Honeywell CT3650 thermostat combines cutting-edge technology with user-centric design. With its Wi-Fi connectivity, intuitive touchscreen, smart response features, and compatibility with multiple systems, it stands out as an excellent choice for homeowners aiming to achieve a comfortable and energy-efficient living space.
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