Description, Table of Contents | Honeywell CM900 instruction

CM900 Wireless Installation Guide

CM927 / CM921 Wireless Programmable Room Thermostat & BDR91 Relay Box

Description

The Honeywell CM900 Wireless (CM927 or CM921) is a modern wireless programmable room thermostat based on Honeywell’s proven programming philosophy. To further improve the ease of use, this product includes an extra large LCD display with backlighting and LoT Technology to assist customers during daily use.

The CM927/921 room thermostat communicates with the BDR91 Relay Box on an 868MHz Radio Frequency (RF) band to control a single heating system component such as a boiler, pump or zone valve. Neither product will communicate with other RF products that use different frequencies or communication protocols.

Note: The RF link between the individual room thermostat (CM927/921) and Relay Box (BDR91) in system packs provided by Honeywell is pre- configured at the factory and therefore SHOULD be installed at the same site. This makes the installation process fast and easy, but if products from individual system packs are separated, or mixed with other pre-configured system packs during installations please refer to section 5.1 Binding / Rebinding Procedure to bind the desired units together and allow them to communicate with each other.

Table of Contents
Section		Page
1) Installation Information			2
2) Installing the CM900 Wireless System			3
2.1	Installing the Relay Box		3
2.2	Installing the Room Thermostat		4
	2.2.1 Power Up		4
	2.2.2 RF Communication Check		4
	2.2.3 Locating the Room Thermostat		5
2.3	System Check		5
3) Basic Operation of the System			6
3.1	Automatic Operation		6
3.2	Temporary Manual Override		6
3.3	Communication Loss		6
4) Installer Mode			6
4.1	Entering Installer Mode		7
4.2	BDR91 Relay Box Fail-Safe Mode Setup		7
4.3 Using the Room Thermostat for Specific Applications...			8
4.4 Using the Special Features of the Room Thermostat.			. 8
4.5	Installer Parameters Table		9
	4.5.1 Category 1 - Room Thermostat Settings		9
	4.5.2 Category 2 - System Settings		10
5) Additional Installation Information			11
5.1	Binding / Rebinding Procedure		11
5.2	Multi-Zone System		11
5.3	Binding an HR80 Radiator Controller
	to the Room Thermostat		11
6) Trouble Shooting			12
6.1	Trouble Shooting Guide		12
6.2	Diagnostics Mode		12

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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.