2.2.3 Locating the Room Thermostat

While still in the Test Mode, as described in section 2.2.2, the room thermostat should be located taking the following into consideration and reviewing the illustrations below:

1.Find a suitable location where the signal transmission is reliable. Reliable transmission is indicated when the Relay Box is flashing the green LED every 6 seconds. NOTE: The Relay Box relay will be off.

2.Install the room thermostat EITHER on the wall using the wall bracket OR attach the optional table stand as shown in below.

3.Exit the Test Mode by moving the setting slider to the required operating mode (AUTO or OFF).

Wall bracket

Table stand

✗

✗ ✓

•The room thermostat should be installed in an open space for best performance as it is a radio frequency device.

•Leave at least 30cm distance from any metal objects including wall boxes and at least 1 metre from any other electrical equipment eg. radio, TV, PC etc.

•Do not mount onto metal wall boxes. • It is recommended that the Relay Box is fully installed.

2.3 System Check

Now a simple test can be completed to check the full system has been installed correctly:

1.Set the slider switch to the OFF mode.

2.Check the boiler supply is on and check that the green LED on the Relay Box is off.

3.Set the slider switch to the MAN mode.

4.Adjust the setpoint up to the maximum (35°C) by pressing the button. The boiler should come on (green LED ON on Relay Box) after a few seconds and the symbol appears on the room thermostat LCD display.

5.Set the slider switch to the OFF mode. The boiler will go off (green LED OFF on Relay Box) after a few seconds and the symbol disappears.

6.Check the system operation by moving the slider between MAN and OFF modes several times, bearing in mind the switching delay referred to above.

Now, you should have completed the installation successfully - to begin operating at the default factory settings move the slider to the AUTO mode or select PROG to modify the built-in heating program accordingly.

Installation Guide

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Honeywell CM900 manual Locating the Room Thermostat, System Check
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CM900 specifications

The Honeywell CM900 is a sophisticated programmable room thermostat designed to enhance energy efficiency and ensure optimal comfort in residential settings. This device is characterized by its advanced features, which cater to the increasingly demanding needs of modern households.

One of the standout features of the CM900 is its intelligent programming capabilities. Users can easily set different heating schedules for weekdays and weekends, allowing for personalized comfort that adapts to the household's routine. This programmable functionality not only maximizes comfort but also contributes to energy savings, as it can automatically lower the heating during unoccupied periods.

The CM900 is equipped with a user-friendly interface that makes it straightforward to adjust settings. The large, clear display provides essential information at a glance, such as current room temperature and set points. Additionally, the intuitive menu navigation allows users to customize settings quickly, ensuring a seamless experience even for those who may not be technically inclined.

Incorporating the latest technology, the Honeywell CM900 features an innovative adaptive control system. This technology enables the thermostat to learn the heating characteristics of the home, adjusting pre-heat times to ensure that the desired temperature is reached precisely when needed. As a result, users can enjoy comfortable living spaces without wasting energy.

The CM900 also boasts an impressive response time, ensuring that any adjustments to the heating system occur swiftly. Coupled with precise temperature sensing, this allows for a stable indoor climate, which is essential for both comfort and energy efficiency. The device can be connected to various heating systems, making it a versatile option for a range of home heating configurations.

For those interested in further customizing their heating experience, the Honeywell CM900 offers compatibility with multiple accessories, including remote sensors and Wi-Fi connectivity options. This enables homeowners to monitor and adjust their heating systems even when they are away from home, leading to added convenience and peace of mind.

In summary, the Honeywell CM900 is a high-performance programmable thermostat that combines advanced technology with user-centric features. Its intelligent scheduling, adaptive control, and ease of use make it an excellent choice for anyone looking to achieve a perfect balance between comfort and energy efficiency in their home.
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