OpenTherm® Modulating Room Thermostat Honeywell T87M

The Honeywell T87M Modulating Room Thermostat with OpenTherm® technology (reference T87M2036) is an advanced device designed to provide precise and efficient heating control, particularly in residential and light commercial installations. This model offers multiple output configurations, including modulation via OpenTherm® and on/off control, making it a versatile and adaptable option for various heating setups.

This thermostat is compatible with OpenTherm® boilers, allowing advanced temperature control, optimising energy use, and enhancing home comfort. Its 0.5°C accuracy ensures fine temperature adjustment, and its sleek modern design makes it a solution that easily integrates into any type of décor.

Main Features:

• OpenTherm® Connectivity: The Honeywell T87M enables direct communication with OpenTherm® compatible boilers, adjusting the boiler modulation to provide the optimal level of heat with reduced energy consumption. This feature is ideal for homes seeking energy efficiency without sacrificing comfort.

• Optional Remote Control: When connected to the Honeywell RFG100 Internet gateway, the thermostat can be controlled remotely via the Honeywell TCC app, available for smartphones and tablets. This allows temperature and operation modes to be adjusted from anywhere, providing greater user control and convenience.

• Compatibility with Multi-zone Systems: The T87M is also compatible with multi-zone control systems, such as the Evohome underfloor heating system and the HCE80 zone controller, making it an ideal choice for those who wish to manage different areas of the home efficiently and independently.

• Adaptable Control Modes: This thermostat includes both modulating mode via OpenTherm® and an on/off control mode that can be adapted to different types of boilers and heating systems, providing versatile performance in various applications.

• Backlit Display and Intuitive Design: The Honeywell T87M features a large backlit display that makes it easy to read the temperature and thermostat settings, even in low-light conditions. Additionally, its design with a rotary dial simplifies temperature adjustment, making it very user-friendly for all types of users.

• Easy Installation and Maintenance: The thermostat can be easily wall-mounted, and wired models are powered directly by the OpenTherm® bus, eliminating the need for batteries and simplifying maintenance. Wireless models, powered by 2 AA alkaline batteries, ensure a minimum lifespan of 2 years before requiring battery replacement.

• Wide Operating Range: It operates within an ambient temperature range of 0°C to 40°C and can function in environments with relative humidity between 10% and 90%, ensuring durability and reliability in diverse conditions.

Technical Specifications:

• OpenTherm® Modulating Output: Provides modulating control for OpenTherm® boilers, continuously adjusting the boiler power to maintain the desired temperature.
• Temperature Accuracy: With a 0.5°C adjustment accuracy, the thermostat ensures efficient temperature control.
• Backlit Display: The easy-to-read display includes symbols to indicate heating status, connection, RF communication, and more.
• RF Operating Frequency: For wireless models, it uses a radio frequency of 868 MHz, ensuring reliable communication with a typical range of 30 metres in buildings.
• Heating System Compatibility: Compatible with Evohome and HCE80 systems, allowing integration into multi-zone control systems for greater customisation.
• Protection and Durability: The thermostat features an IP20 protection for indoor use and a storage temperature range between -20°C and 55°C, making it a durable option for use in various climates.

Applications:

The Honeywell T87M is ideal for applications in single-family homes or light commercial settings that require precise heating control via an OpenTherm® system. It is especially useful in modulating boiler installations and multi-zone heating systems, where energy efficiency and flexibility are essential.