STEP 2. REMOVE OLD THERMOSTAT

❑Test your heating and cooling systems to make sure they work properly. If either system does not work, contact your local heating/air-conditioning dealer. To avoid compressor damage, do not operate the cooling system when outdoor temperature is below 50°F (10°C).

❑Turn off power to the system at the furnace or the fuse/circuit breaker panel.

❑Carefully unpack your new thermostat and wallplate. Save package of screws, instructions, and receipt.

❑Remove the cover from the old thermostat. If the cover does not snap off when pulled firmly from the bottom, check for a screw or screws used to lock on the cover.

❑Loosen the screw or screws holding the thermostat to the wallplate and lift the thermostat away.

❑Disconnect the wires from the old thermostat. As you disconnect each wire, attach the enclosed labels with the old terminal designation. If there are only two wires, they do not need to be labeled. Wrap the wires around a pencil as shown to keep them from falling back into the wall.

Special Installations

Read this section if you are replacing:

•Clock thermostat with separate wires for the clock.

•Thermostat with six or more wires connected to it.

•Thermostat in a heating only system with three wires.

Replacing a Clock Thermostat that has C or C1 Clock Terminals

WIRES THROUGH WALL OPENING

M5136

If you are replacing a Honeywell Chronotherm® Thermostat, you may find one or two

wires going to the C or C1 clock terminals on the Chronotherm wiring wallplate. Do not allow them to touch, or you can damage the transformer. Disconnect the wires and wrap them separately using electrical tape. Do not wrap them together. Place the wires where they will not interfere with the operation of the new thermostat. Record the colors and terminal designation labels of the remaining wires.

Replacing a Thermostat that has Six or More Wires

If there are six or more wires (excluding clock wires attached to terminals), you probably have a variation of a multistage heat pump or other multistage system. This thermostat is not compatible with multistage systems, so return the product to the place of purchase. For information about which programmable thermostats will work with your system, call Honeywell Customer Relations Center, at 1-800-468-1502.

Replacing a Thermostat that has Three Wires

If you have three wires for a heating only system and can operate the fan using the fan ON switch this thermostat works with your system. However, some hot water (zoned) heating systems also have three wires. Your thermostat will work only if you install an isolating relay on these systems. For details, call your local heating and/or cooling contractor.

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Honeywell CT3600, CT3697 manual Remove OLD Thermostat, Special Installations
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CT3697, CT3600 specifications

The Honeywell CT3600 and CT3697 are advanced digital thermostats designed to enhance comfort and energy efficiency in residential and light commercial applications. These devices incorporate cutting-edge technologies and feature rich capabilities to ensure precision temperature control, energy savings, and easy operation.

One of the standout features of both models is their user-friendly interface, which includes a large, easy-to-read LCD display. This display allows users to quickly access settings and monitor indoor temperature and humidity levels. The backlighting ensures readability in low-light conditions, making it convenient to use at any time of the day or night.

The Honeywell CT3600 and CT3697 are equipped with smart programming capabilities. Homeowners can easily set schedules for heating and cooling based on their daily routines, which optimizes energy use while maintaining comfort. The 7-day programmable feature offers the ability to set different schedules for each day of the week, allowing for tailored comfort on both weekdays and weekends.

Additionally, these models include adaptive intelligence technology. This feature learns the homeowner's habits over time and adjusts the temperature settings accordingly, ensuring that the home reaches the desired comfort level at the right time without unnecessary energy consumption. This intelligence not only enhances comfort but can contribute to lower energy bills.

Both models support multi-stage heating and cooling systems, accommodating various HVAC configurations with ease. They offer compatibility with conventional, heat pump, and auxiliary heating systems, providing versatility for different home setups.

Another important characteristic is the decision to use environmentally friendly materials in the construction of the CT3600 and CT3697. This commitment to sustainability aligns with Honeywell's initiatives toward energy efficiency and ecological responsibility.

Furthermore, installation is simple thanks to the integrated step-by-step guide within the thermostat, allowing users to set up the device without needing professional help. The ability to connect to Wi-Fi for remote access and control further enhances the user experience, as homeowners can adjust settings from their smartphones or computer.

In conclusion, the Honeywell CT3600 and CT3697 are sophisticated yet user-friendly thermostats that combine advanced technology with practical features, offering significant benefits in comfort, convenience, and energy savings for homeowners.
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