Honeywell CM900 manual Entering Installer Mode, BDR91 Relay Box Fail-Safe Mode Setup

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4.1 Entering Installer Mode

1

2

DAY

COPY

DAY

DATE

OFFPROG

AUTO

MAN

OFF

CM927 1..6

 

Move the slider switch to the OFF mode.

 

 

The unit will display the first parameter of installer

 

 

 

parameter group category 1 (from Parameter n.1

 

Press and hold the

 

button and the two

&

 

 

 

 

to n.19) as shown

 

 

 

buttons together.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

Press the

 

 

or

 

to

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

Press the green

 

change factory setting.

 

 

button to confirm the

 

The display will flash

 

 

change.

 

 

 

 

 

 

 

indicating that a change

 

 

The display will stop

 

has been made.

 

 

 

 

flashing.

 

 

 

 

 

 

 

 

 

 

 

 

 

5

Press

 

 

 

button to go

 

6

Press

button to go to Installer parameter group

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

category 2 ( ) (from Parameter n.1 to n.14).

 

to the next parameter.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

To exit the installer mode, move the slider switch to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the AUTO or MAN positions.

4.2 BDR91 Relay Box Fail-Safe Mode Setup

The failsafe mode defines the Relay Box output relay status if the RF communication is lost (e.g. when the room thermostat stops communicating due to discharged batteries). The factory setting keeps the relay permanently off when communications is lost. If this factory setting needs to be changed follow the instructions below:

1.Enter Installer mode as described above.

2.Press the button to enter category 2 parameters.

3.Select the parameter 7:LC by pressing the button.

4.Select the fail-safe mode by pressing or buttons:

•0 - when RF communication is lost the relay will be held in OFF position.

•1 - when RF communication is lost the relay output will cycle at 20% on 80% off.

5.Press the green button to accept the change.

6.Attach appropriate label to the Relay Box to indicate the selected fail-safe mode.

IMPORTANT: To enable the frost protection when RF communication is lost, select the fail-safe mode 1. For systems with separate frost protection thermostat or where frost protection is not required select fail-safe mode 0.

Installation Guide

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Contents Description Table of ContentsInstallation Information Installing the Relay Box Installing the CM900 Wireless SystemRF Communication Check Test Mode Installing the Room Thermostat 2.2.1 Power UpSystem Check Locating the Room ThermostatTemporary Manual Override Installer ModeBasic Operation of the System Automatic OperationBDR91 Relay Box Fail-Safe Mode Setup Entering Installer ModeUsing the Special Features of the Room Thermostat Using the Room Thermostat for Specific ApplicationsCategory 1 Parameters Room Thermostat Settings Category 2 System Settings Binding an HR80 Radiator Controller to the Room Thermostat Additional Installation InformationBinding / Rebinding Procedure Multi-Zone SystemTrouble Shooting Guide Trouble ShootingDiagnostic Mode

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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