Honeywell CM721 Manuel utilisateur

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

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

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 sensi-

tive 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

< 7mm Ø

> 7mm Ø

1.5-2.5mm²

6mm max.

Combi boiler

= M3.5

= No6

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).

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.

Installation Guide 5

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:

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 on the wall using the wall bracket as shown in the diagram below.

3. Exit the Test Mode by pressing the AUTO or OFF button.

2.3 System Check

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

1. Press the OFF button.

2. Check the boiler supply is on and check that the green LED on the relay box is off.

3. Press the MAN button.

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. Press the OFF button. 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 alternately pressing the MAN and OFF buttons 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 press the AUTO button or press PROG to modify the built-in heating program accordingly.

Wall bracket

•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.

✓

✗✗

1.2m

6 CM700 Wireless - Programmable Room Thermostat

3.1 Automatic Operation

The relay box receives the heat demand (0-

100%) signal from the room thermostat. The room

thermostat will display the symbol on the LCD

display whenever more heat is required. Depending

on the demand the relay box will switch the heating

device on to match the current requirements of the

system.

The green LED indicates the status of the relay

output:

• GreenLEDon=relayon

• GreenLEDoff=relayoff

3.2 Temporary Manual Override

Pressing the relay box button will override the current relay position. As soon as the next signal is received

from the room thermostat the relay box will return back to automatic operation as the automatic control has

higher priority than manual operation.

3.3 Communications Loss

If the RF communication is lost for a period of 1 hour the red LED will illuminate to indicate that no RF

messages have been received during the last hour.

The relay box will also enter the failsafe mode as selected in Installer Mode (see section 4.2 BDR91 Relay

box Fail-Safe Mode Setup). To allow manual control of the relay box output manual override is available

in fail-safe mode. When RF communication is restored the relay box will automatically return to normal

operation.

You can now use the USER GUIDE supplied with the room thermostat to demonstrate how it works to the

home owner.

3) Basic Operation of the System

4) Installer Mode

Installer Mode is used to alter the system settings for speciﬁc applications, to use the special features of

the room thermostat in a different way or to alter the factory preset parameters. Parameters are divided

into two groups:

- Category 1 parameters – Room Thermostat Setup

- Category 2 parameters – System Setup.

These are all listed in section 4.5 Installer Parameters Table.

BDR91 Relay box

Push button and

relay status LED’s

Installation Guide 7

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.

1. Press the OFF button.

2. Press and hold the button and the two

PROGRAM and buttons together.

3. The unit will display the ﬁrst parameter of installer

parameter group category 1 (from Parameter

No. 1 to 20).

4. Press the or button to change the factory

setting. The display will ﬂash indicating that a

change has been made.

5. Press the green button to conﬁrm the

change. The display will stop ﬂashing.

6. Press the button to go to the next

parameter.

Press the PROGRAM button to go to Installer

parameter group category 2 (from Parameter No.

1 to 5).

8. To exit installer mode, press the AUTO, MAN or

OFF button.

4.1 Entering the Installer Mode

COPY

D A Y

DATE/

D A Y

1..4

MANAUTO

1234567

A U TO

MAN

OFF

PROGRAM

COPY

D A Y

DATE/

D A Y

1..4

1234567

A U TO

MAN

OFF

1 2

PROGRAM

8 CM700 Wireless - Programmable Room Thermostat

4.3 Using the Room Thermostat for Speciﬁc Applications

The CM727/721 RF room thermostat is a versatile controller that can be used to control many different

applications. For most typical applications, like wall-hung gas ﬁred combination boiler control or zone

valve control, no adjustments from the factory settings are required. For other applications, like controlling

an oil burner, the best system performance can be achieved by modifying selected parameters of the

room thermostat in the Installer mode. The table below lists the most common settings used for speciﬁc

applications.

4.4 Using the Special Features of the Room Thermostat

Special Feature: Description: Enable/Disable

Optimisation

(Variable Start Time)

The thermostat will adjust the start time in the morning/afternoon

so the desired temperature is reached by the start of the program

period. The system will restrict the start time to a max of 2 hours.

To enable: Set parameter

8:OP (category 1) to 1.

Scheduled

Maintenance Alert

Period

If the installation requires scheduled maintenance and the user

needs to be reminded that the service is due the parameter value

can be set to the required number of months (1-48). When the

preset period expires the CM721/CM727 will display the ‘SERVICE’

icon.

Set parameter 19:SP

to the required value to

enable maintenance alert.

Value set to zero disables

the function.

Summer/Winter Auto

time change

This feature moves time automatically on the last Sunday of March

and the last Sunday of October. The feature is factory enabled.

To enable: Set parameter

3:tC (category 1) to 1.

Temperature Offset If the thermostat is located in a particularly hot/cold location

for reliable signal transmission reasons then the measured/

displayed temperature can be adjusted by +/- 3°C. This is useful

if the homeowner wants the reading to match another appliance

temperature display.

Set parameter 12:

tO (category 1) to the

required offset value.

Upper/Lower

Temperature Limit

The normal upper temperature limit of 35°C can be reduced to

21°C to save the homeowner energy. The normal lower limit of 5°C

can be increased up to 21°C to protect inhabitants from cold.

Set parameter 6:uL

(category 1) to the desired

upper limit.

Set parameter 7:LL

(category 1) to the desired

lower limit.

Speciﬁc Application: Setting: What to change:

Cycle/

Hour

Minimum

ON Time

Note: All parameters listed below belong to

category 2 - System Parameters (see Installer

Parameters Table)

HEATING Gas Boiler

(<30kW)

6 1 No changes required

Oil Boiler 3 4 Set 1:Ot parameter to 4

Set 2:Cr parameter to 3

Thermal Actuator 12 1 Set 2:Cr parameter to 12

Zone Valve 6 1 No changes required

Installation Guide 9

4.5 Installer Parameters Table

4.5.1 Category 1 - Room Thermostat Settings

Note

1) Remember to always press the green button to conﬁrm that you want to store your new Installer Set-

Up setting. To exit the Installer Mode press the AUTO or MAN button.

Parameter Parameter

No.

Factory Default Setting Optional Setting

Category 1 Parameters – Room Thermostat Settings

Display Description Display Description

AM-PM / 24hr

Display

1:CL 12 12 hr – AM/PM clock

display format

24 24 hr clock display format

Reset Time/ Temp

Program

2:rP 1 Time / Temp proﬁle

set to factory default

Changes to 0 when

one of the time/temp

proﬁles are changed

0 Time / Temperature are as

programmed

To restore the factory proﬁle set to 1

Auto Summer/

Winter Time

Change

3:tC 1 Auto Summer/Winter

Time Change

Enabled

0 Auto Summer/Winter Time Change

Disabled

LCD Backlighting 5:bL 1 Backlighting Enable 0 Backlighting Disabled

Upper Temp Limit 6:uL 35 35°C Upper Temp.

Limit

21 to

21°C to 34°C adjustment in 1°C

steps

Lower Temp Limit 7:LL 5 5°C Lower Temp.

Limit

5 to 21 6°C to 21°C adjustment in 1°C steps

Optimisation 8:OP 0 Optimisation

Disabled

1 Optimisation Enabled

Temperature

Offset

12:tO 0 No temperature

offset

-3 to

-3°C to +3°C adjustment in 0.1°C

steps

Proportional Band

Width

13:Pb 1.5 Proportional band of

1.5 degrees

1.6 to

3.0

1.6°C to 3.0°C adjustment in 0.1°C

steps

Scheduled

Maintenance Alert

Period (months)

19:SP 0 Scheduled

Maintenance Alert

Period disabled

0 to 48 0 to 48 months adjustment in 1

month steps

Reset Parameters

to Factory

Defaults

20:FS 1 All settings at factory

defaults

Changes to 0 when

one of the parameter

is changed

0 Settings are as modiﬁed above

To restore the factory proﬁle set to 1

10 CM700 Wireless - Programmable Room Thermostat

4.5.2 Category 2 - System Settings

5) Additional Installation Information

5.1 Binding / Rebinding Procedure

The binding operation described below is required if:

• Anyofthesystemcomponents(roomthermostatorrelaybox)arereplaced.

• Therelayboxhasincorrectornobindingdatastored(e.g.whenpre-boundsystempackcomponents

have been mismatched).

NOTE: During the binding procedure keep approximately 1m distance between the room thermostat and

the relay box.

To bind/rebind:

1. Press and hold the relay box push button for 15 seconds to reset any previously stored data. After 15

seconds the red LED will change to ﬂashing 0.1sec on/0.9sec off.

NOTE: After 5 seconds the red LED will start to ﬂash 0.5sec on/0.5sec off, but continue to hold the

button).

2. Release the push button.

3. Press and hold the relay box push button for 5 seconds to enter the binding mode. The Red LED will

start ﬂashing at 0.5sec on/0.5sec off to conﬁrm the binding mode has been entered.

4. Press the OFF button on the room thermostat. Then press the and buttons together along with

the button. The unit will display InSt and ‘CONTROL BINDING’.

5. Press the green button to send the binding signal out to the relay box. The red LED is switched off

to conﬁrm successful binding operation. If the red LED still ﬂashes push the button again until binding

is successful.

6. Now go to Section 2) Installing the CM700 Wireless System to setup the system.

Note

1) Remember to always press the green button to conﬁrm that you want to store your new Installer Set-

Up setting. To exit the Installer Mode press the AUTO or MAN button.

Parameter Parameter

No.

Factory Default Setting Optional Setting

Category 2 Parameters – System Settings (press the button to access this category)

Display Description Display Description

Minimum boiler

ON time

1:Ot 1 1 minute minimum

ON time

2 to 5 Selection of 2, 3, 4 or 5 minutes

minimum ON time

Cycle Rate 2:Cr 6 6 cycles per hour

(cph)

3,9 or

Selection of 3, 9 or 12 cph

Pump Exercise 5:PE 0 Pump exercise

disabled

1 Pump exercise enabled

System

Synchronisation

6:Sn 0 Standard operation

of the Room Unit

1 Room unit conﬁgured as

Synchroniser

Loss of

Communications

Instruction

7:LC 0 Relay Off 1 Relay 20% on / 80% off

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