Honeywell BDR91 User Manual

CM700 Wireless
Installation Guide
CM727 / CM721 Wireless Programmable
Room Thermostat & BDR91 Relay box
Description
The Honeywell CM700 Wireless (CM727 or
CM721) is a modern wireless programmable
room thermostat based on Honeywell’s proven
programming philosophy. To further improve the
ease of use, this product includes a large LCD
display with backlighting to assist customers
during daily use.
The CM727/721 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 (CM727/721) 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 CM700 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 ............. 10
5.1 Binding / Rebinding Procedure ...................... 10
5.2 Multi-Zone System ........................................ 10
6) Trouble Shooting .......................................... 11
6.1 Trouble Shooting Guide ................................. 11
6.2 Diagnostics Mode ........................................ 11
50039990-003 A
This is a legacy product document
supported by Resideo. It is no
longer manufactured

Honeywell BDR91 Specifications

General

Type	Wireless Relay Box
Power Supply	230V AC
Frequency	868 MHz
Operating Temperature	0°C to 40°C
Compatibility	Evohome, Single Zone Thermostat

Summary

Installation Information

Installing the CM700 Wireless System

Installing the Relay box

Instructions for installing the RF relay box, including placement and wiring.

Installing the Room Thermostat

Steps for installing the wireless room thermostat, including battery insertion and setup.

System Check

Procedure to verify the correct installation and operation of the thermostat and relay box.

Basic Operation of the System

Automatic Operation

How the system operates automatically based on thermostat signals.

Temporary Manual Override

How to manually override the relay box position temporarily.

Communications Loss

What happens and how the system behaves when RF communication is lost.

Installer Mode

Entering the Installer Mode

Instructions on how to access and navigate the installer settings menu.

BDR91 Relay box Fail-Safe Mode Setup

Configuring the relay box behavior during RF communication loss.

Using the Room Thermostat for Specific Applications

Guidance on configuring the thermostat for different heating system types.

Using the Special Features of the Room Thermostat

Explanation and configuration of special thermostat features like optimisation.

Installer Parameters Table

Category 1 - Room Thermostat Settings

Details of configurable parameters for room thermostat settings.

Category 2 - System Settings

Details of configurable parameters for system-wide settings.

Additional Installation Information

Binding / Rebinding Procedure

Steps to establish or re-establish communication between thermostat and relay box.

Multi-Zone System

Information regarding the setup and configuration of multi-zone systems.

Trouble Shooting

Trouble Shooting Guide

Common problems, their causes, and remedies for the system.

Diagnostic Mode

How to access diagnostic information for system checks and troubleshooting.