Honeywell CM727, CM721 Installation 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 preconfigured 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
2 CM700 Wireless - Programmable Room Thermostat
1) Installation Information
As these products communicate using RF technology special care must be taken during installation. The
location of the RF components as well as the building structure may influence performance of the RF
system. To assure system reliability, please review and apply the information given below.
Within a typical residential building the two products should communicate reliably within a 30m range. It
is important to take into consideration that walls and ceilings will reduce the RF signal. The strength of
the RF signal reaching the relay box depends on the number of walls and ceilings separating it from the
room thermostat, as well as the building construction - the diagram below illustrates an example of typical
signal strength reduction. Walls and ceilings reinforced with steel or plasterboard walls lined with metal foil
reduce the RF signal significantly more.
Once a position is selected for the room thermostat this can be checked using the RF Communication Test
mode as described in section 2.2.3 Locating the Room Thermostat. If the position is unsuitable the relay
box will not respond and an alternative position must be selected.
Typical example of Building Fabric Signal losses
Wall Wall Wall
Ceiling
Max. Signal Length 30 metres
= Signal Strength
Installation Guide 3
2) Installing the CM700 Wireless System
Please follow the illustrations and information below in sequence to install the relay box and room thermostat
correctly. For applications other than gas boilers, enabling special features and to see what other system
options are available refer to section 4) Installer Mode.
2.1 Installing the Relay box
1
The Relay Box is a RF device. For the
best performance install in an open
space. Leave at least 30cm distance
from any metal objects including wall
boxes and boiler housing.
Do not mount on metal wall boxes.
EMC compliance considerations
Keep AC mains supply/load cables
separate from signal wiring.
Refer to Code of Practice standards
EN61000-5-1 and -2 for guidance.
NOTE: The Relay Box contains
no user serviceable parts. It
should be opened and installed
by qualified installer only.
WARNING: Electrostatic sensitive device! Do not touch the
circuit board.
NOTE: All wiring must be in accordance with IEE regulations
CAUTION: Observe ambient temperature and current limits
(see the Relay Box wiring label)
Burner (direct control)
Zone valve Cooling device
2 3
4
< 7mm Ø
> 7mm Ø
a.
b.
6
5
1.5-2.5mm²
6mm max.
Combi boiler
= M3.5
=
No6
1
2
2
1
230V
50-60Hz
<
5A
BDR91
A-B:5(3)A
A-C:5(3)A
BDR91
A-B:5(3)A
A-C:5(3)A
230V
50-60Hz
<
5A
V4043H
BDR91
A-B:5(3)A
A-C:5(3)A
230V
50-60Hz
<
5A
BDR91
A-B:5(3)A
A-C:5(3)A
230V
50-60Hz
<
5A
4 CM700 Wireless - Programmable Room Thermostat
2.2 Installing the Room Thermostat
2.2.1 Power Up
Installing the Batteries:
a. Lift up the front cover of the thermostat to reveal the battery cover and product controls.
b. Remove the battery cover by pressing down and sliding out.
c. Insert the 2 x AA LR6 Alkaline Batteries supplied with the thermostat, ensuring the correct orientation
(see ‘Controls Layout’ on page 2).
d.
After a short pause the thermostat will display information on the screen and is now ready for use.
e. Replace the battery cover by sliding it firmly back into the front of the thermostat.
Setting the Date and Time:
a. Press the DATE button to begin setting the date. When you set the date for the
first time after the batteries are inserted, the display will show:
Press the or buttons to set the current day of the month (e.g. d 01 = 1st
day of the month) then press the green button to confirm.
b.
Press the or buttons to set the current month of the year (e.g. m 01 =
January) then press the green button to confirm.
c. Press the or buttons to set the current year (e.g. yr 07 = 2007) then press
the green button to confirm.
The date is now stored.
d. Use the or buttons to set the correct time then press the green button
to confirm. Each press of the buttons will change the time by one minute and
holding them down will change the time slowly at first and get progressively
quicker.
Note: If this mode is entered accidentally then press the AUTO, MAN or OFF buttons to exit.
2.2.2 RF Communication Check (Test Mode)
To check the RF communication, hold the room thermostat about 2-3 metres from the installed relay box.
Press the OFF button, then press the and buttons together with the button for 3 seconds. The
unit will display ‘TEST TRANSMIT’ and it will send test signals to the relay box, flashing the green LED on
every 6 seconds (relay output will remain off) for a maximum of 10 minutes. When the green LED flashes
on every 6 seconds proceed to the next step.
NOTE: If the green LED is not switched at specified intervals, the red LED is flashing or if you are installing
a replacement relay box or room thermostat, follow the procedures described in section 5.1 Binding /
Rebinding Procedure.
AM
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