Wireless replacement thermostat T4R

The Honeywell T4R replacement chronothermostat (ref. T4H700RF2055) is the perfect solution for those looking to improve temperature management in their heating systems. This wireless model is designed for installations that already use the T4R range, providing efficient and programmable temperature control for gas boilers, mixed boilers, and heat pumps. Only the thermostat is supplied, without support, receivers, or other accessories, making it the ideal replacement for existing systems.

Flexible programming tailored to your needs

The Honeywell T4R allows for customizable programming to fit your daily routines. It offers two programming options:

• 7 days: to have a different program for each day of the week.
• 5/2 days: to differentiate between weekdays and the weekend.

Additionally, this chronothermostat includes a factory preconfigured program, so you can start using it immediately if you do not wish to set one up from scratch. For each day, you can adjust between four and six independent time periods, allowing you to control the temperature according to your comfort needs at different times of the day.

Compatibility and ease of installation

The T4R is compatible with on/off devices of 24-230V, such as gas boilers, mixed boilers, and heat pumps, making it versatile for various applications. Installation is quick and easy, thanks to a three-step process:  wiring, powering on, and testing. The improved wall plate with more space for wiring further simplifies installation.

Advanced comfort and energy efficiency features

This chronothermostat is not only easy to use but also includes advanced features that maximize comfort and energy efficiency:

• Optimal stop, start, and delayed start functions: The thermostat learns how your home heats up and automatically adjusts the on and off times to maintain the desired temperature without wasting energy.

• Adjustable frost protection: This feature protects your heating system on the coldest days by maintaining a minimum temperature to prevent freeze damage.

• Absence mode: Ideal for when you are away for a few days, it allows you to set a lower maintenance temperature for the duration you choose.

• Temporary override: If at any time you need to change the temperature temporarily, you can do so with the temporary override option, either until the next set point or for periods of 1 or 2 hours.

Intuitive display and controls

The T4R chronothermostat is designed to be easy to use for all family members. Its extra-large LCD display clearly shows information such as the current temperature, active programs, and the current time. Additionally, it features optional backlighting, making it easier to use in low-light conditions. The function buttons are simple and intuitive, allowing for smooth navigation through the configuration menus, accessible via a specific button.

Among the visual indicators, the heat demand icon is especially useful during startup tests, as it allows you to easily check when the system is operating.

Additional features for greater convenience

• Automatic daylight saving/winter time change: The T4R automatically adjusts the clock according to the time of year, eliminating the need for manual changes and ensuring that you always have the correct time set.

• Low battery indicator: The device operates on batteries and features a low battery indicator so you always know when it’s time to change them. Additionally, the battery compartment is designed for easy access and replacement without complications.

Key technical specifications

• Programming: 7 days or 5/2 days with up to 6 daily periods.
• Compatibility: On/off devices of 24-230V, such as gas boilers and heat pumps.
• Display: Extra-large LCD with optional backlighting.
• Frost protection: Adjustable to maintain a minimum temperature during extreme cold periods.
• Absence mode: Custom setting to maintain a temperature during prolonged absences.
• Automatic time change: Automatic adaptation to daylight saving and winter time changes.
• Low battery indicator: Battery-operated with a warning when replacement is needed.
• Temporary override: Ability to modify the temperature for one or two hours or until the next scheduled adjustment.

The wireless Honeywell T4R is the ideal option for those looking to replace their current thermostat due to malfunction, use, or need for replacement.