Honeywell CM721 User manual

CM721..................................2-6

CM727................................7-11

USER GUIDE

Features

• Ergonomicuserinterfacefeaturingan‘OK-button’.

• LargeLCD(LiquidCrystalDisplay)Screen

• 4independenttemperaturelevels(from5°Cto35°C).

• AutomaticSummer/WinterTimeChange.

•

OptimumStarttoachievetherighttemperatureatthe

righttime.

• Built-inMemoryholdstheuserprogramindenitely.

Description

The Honeywell CM721 is a

programmable room thermostat

designed to control your heating

system efciently, providing

comfortable temperatures when

you are at home and energy

savings when you are away. The

following instructions explain how

toprogramandusethethermostat

toprovidethemosthomecomfort

attheleastcost.

Controls Layout

LCDScreen

BatteryLowIndicator

TimeDisplay

BurnerOnIndicator

TemperatureDisplay

611

BatteryCover

ProgramButtons

TimeChangeButtons

SetDateButton

TemperatureChangeButtons

TemperatureEnquiryButton

OperatingModeButtons

GreenOKButton

BatteryCompartment

1. . 4

AUTO

AU TO

MAN

OFF

1 2 43 5

PROGRAM

CM721

D AT E

CM721 - USER GUIDE

SETTING-UP THE CM721 ‘Getting Started’

This section shows you how to setup and run the thermostat in 3 simple steps:

STEP 1: Installing the Batteries

Note: Please follow the instructions in this section only if the thermostat screen is blank (no

symbols or digits are displayed). If the room temperature is already displayed move on to Step 2:

Setting the Date and Time.

To install 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.

STEP 2: Setting the Date and Time

To set 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 06

= 2006) 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.

STEP 3: Running the Built-in Heating Program

Thethermostatisnowreadyforoperation.PresstheAUTO buttonandthebuilt-inheatingprogram

willstartrunning.Note: The built-in heating program has been designed to provide normal comfort

requirements, but if you want to customise the settings please see the next section ‘Programming

the CM721’.

Period 1 2 3 4

Time 6:30 8:00 18:00 22:30

Temperature 21°C 18°C 21°C 16°C

The Built-in Heating Program

Thebuilt-inheatingprogramhas4temperaturelevelchangesthatcanbesetbetween3.00am

and2.50amthefollowingday-allowingyoutomaintaintheeveningtemperatureaftermidnight.

Eachtemperaturelevelcanbesetbetween5°Cand35°C,andadjustedin0.5°Cincrements.The

factorydefaultprogramforheatingisasfollows.

Reviewing the Heating Program

TorevieworedittheheatingprogramusethePROGRAM or buttonstonavigatebetween

the4individualprogrammingperiods.

Modifying the Heating Program

To change the heating program:

a. Press either of the PROGRAM  or  buttons to

entertheprogrammingmode.Thetime/temperature

settingsfor period 1 willbe ashingas shown.The

active period is highlighted by a ashing square

aroundthenumbersatthebottomofthescreen.

b. Toadjusttheperiodstarttimeusethe or buttons,thedisplaywillstopashingandthe

‘OK?’indicatorwillbedisplayed.Holdingthebuttondownwillchangethetimequickly.

Note: If you are pressing the or buttons and the display ﬂashes the next period, it

means the next period will be pushed forward.

c. Oncetherequiredtimeisreachedpressthegreen buttontoconrm.

Note: If the original time setting did not require adjustment press the green button to move

to step ‘d’.

d. Thetemperaturesettingforperiod 1willnowbeashing.Toadjustthispressthe or

buttonsandconrmthesettingagainbypressingthegreen button.

The next time and temperature period will now be active. Adjust this by repeating steps b- d

aboveuntilall4periodsaresetorpresstheAUTO buttontoruntheprogramasset,atanytime.

Disabling / Enabling Time Periods

Thethermostathas4periodsthatcanbeprogrammed,butyoumaynotneedalloftheseswitch

pointsforyourheatingrequirements.Therefore,anyperiodfrom2to4canberemovedfrom(or

returnedto)theheatingprogramprole.

To disable or enable time periods:

a. Todisableunwantedperiodsgotothedesiredperiod( 2to 4)usingthePROGRAM or

buttonstonavigate,ensurethecorrectperiodishighlightedwiththeashingsquaresymbol.

Pressandholdthe buttonforatleast2secondsandthedisplaywillindicatetheperiodhas

beenremovedfromtheprogram.

b. Toenableperiodsagainfollowthesameprocedureasabove,navigatingtothealreadydisabled

period.Toenablethisperiodagainpressandholdthe buttonforatleast2seconds.

4321

‘Efﬁcient Daily Use’ PROGRAMMING THE CM721

Choosing the Operating Mode

Thethermostatcanoperateinthreedifferentmodes:Automatic,ManualorOff.Tosettheoperating

mode press either of the AUTO, MAN or OFF buttons. The screen indicates which mode is

currentlyactivebydisplayingAUTO,MAN orOFF.

•

AUTO (automatic)modesetsthethermostattofollowthebuilt-intemperatureprogram(default

orpersonalised).Operatingthethermostatinthismodeisthebestwaytomaintainahighlevel

oftemperaturecomfortwhilstmaximisingyourenergysavings.

•

MAN (manual) mode sets the thermostat to act as a simple thermostat with a xed setpoint

throughouttheday.Thesetpointcanbeadjustedfrom5°Cto35°Cbyusingthe

or

buttons.

Thethermostatwillcontinuetomaintainthistemperatureuntilanotheroperatingmodeortemperature

isselected.

• OFFmodesetsthethermostattocontroltoaminimumtemperaturesettingof5°C(default)that

actsasafrostprotectionmeasureforyourhome.

During Normal Operation

• Temperature Enquiry

 In AUTO, MAN and OFF operating modes the thermostat will display the current room

temperature. To review the programmed ‘target’ temperature (the temperature which the

thermostat is trying to maintain) press the  button. This ‘target’ temperature value will be

displayedashingfor5secondsbeforereturningtothecurrentroomtemperaturevalue.

• Temperature Override

 Duringnormaloperation(AUTOmode)theprogrammedtemperaturecanbeadjustedmanually

bypressingthe or buttonsorthe button.The‘target’temperaturewillbedisplayedand

ashfor5seconds-duringthistimethe or buttonscanbeusedtomodifythesetvalue.

Note: This temperature override is cancelled at the next programmed temperature change.

Adjusting the Time

Toadjustonlythetimeduringnormaloperationusethe or buttonstoadjustthetimeand

pressthegreen buttonagaintoconrmanychanges.

Using the Special Features

• SERVICE indicator

Note: This option only works if activated by your

installer.

The 'SERVICE' indicator is displayed at set intervals

as a reminder that your heating system requires a

routine check. Please call your installer to arrange a

maintenance visit.

The ‘SERVICE’ indicator will remain on the display

of the CM721 until it is either reset or disabled by

your installer. The CM721 and heating system will

continue to operate as normal.

OPERATING THE CM721 ‘Using the Features’

How do I change the batteries on the

thermostat when they run out?

The thermostat constantly monitors the battery

power level, which typically lasts for about 2

yearsbeforeneedingreplaced.Whenthepower

is running low a ashing  symbol will be

displayedonthescreen.Tochangethebatteries

followthe stepsin theabovesection (‘STEP 1:

Installing the Batteries’ on page 3), replacing

the used batteries with new ones in Step c.

Note:Whilechangingthebatteriesyourprogram

settingswillbestoredbutyoumayneedtoadjust

thetimesettingstobecorrect.

How do I set one temperature for the

whole day?

To operate as a simple thermostat with one

temperature throughout the day, select the

manual operating mode by pressing the

MAN button. Adjust the temperature by

pressingthe  or buttons - thiscan be

setanywherefrom5°Cto35°Cin0.5°Csteps.

The thermostat will continue to maintain this

temperature until another operating mode is

selectedorthetemperatureisadjusted.

FAQ’s

• Automatic Summer/Winter Time Change

The CM721 has a built-in Automatic Summer/Winter Time Change feature that will automatically

adjust the clock forward or backward by one hour for ‘Daylight Saving Time’. This is carried out

on the last Sunday of March and October each year.

• Optimum Start

Optimum Start is a program which ensures that the optimum temperature conditions are

achieved at the required times. This is an Energy Efﬁciency feature that adjusts the start time

of your heating system depending upon how cold it is. For example, on cold days your heating

system will be started earlier to ensure that your home is warm when you get up (at the target

temperature) and on warmer days the heating system will be started later to save energy. So,

if the Optimum Start Feature is used, then the time / temperature settings which are entered

into the thermostat should be set to when you want to be warm by and not when you want the

heating system to start.

‘Using the Features’ OPERATING THE CM721

BDR91 Relay Box Controls Layout

The relay box will normally be found mounted

close to the boiler.

What does it mean when the BDR91

relay box green LED is ON?

The green LED indicates normal operation of

the radio frequency system. When the green

LED is ON the boiler is also ON. When the LED

is OFF the boiler is OFF.

When do I need to use the push

button?

You should use the push button to control your

boiler only when the RF communication is lost

(see the Troubleshooting Guide).

Push button

and relay

status LED’s

Symptom

BlankDisplay(PowerLoss).

Displayshowsashing

symbol.

Displayshows symbol.

Displayshowstheword'SERVICE'

BDR91redLEDisconstantlyon

orashing

Remedy

Checkbatteriesareinstalledbyremovingthebattery

cover.

Checkbatterieshavebeeninstalledinthecorrect

orientation.

Replacethebatteries.

Thebatteriesinthethermostatarelowonpower

-Replacethebatteries.

Afaulthasoccurredinyourheatingsystem.Remove

andre-insertthebatteries.

Ifthe symboldoesnotclearafterafewminutes

contactyourinstaller.

Your installer has set a scheduled maintenance alert

period on your CM721 as a recommendation that your

heating system should receive a routine inspection.

Call your installer to arrange a maintenance visit.

Note: The CM721 and heating system will continue to

operate as normal.

RF communication lost due to the wrong location of

the room unit - Hook the room unit back on the wall

bracket where RF communication was reliable.

Call installer

NOTE: You can control the boiler manually when the

RF communication is lost: Press the BDR91 push

button to switch the boiler on and off. When the green

LED is on – the boiler is on.

TROUBLESHOOTING THE CM721

CM727 - USER GUIDE

Features

• Ergonomicuserinterfacefeaturingan‘OK-button’.

•

LargeLCD(LiquidCrystalDisplay)Screen.

• 7-dayheatingprogramtomatchyourlifestyle,whilst

maximisingenergysavings.

•

4independenttemperaturelevelsperday(from5°Cto35°C).

• Holidaybuttonsavesenergybylettingyoureducethe

temperaturefor1to99days.

• AutomaticSummer/WinterTimeChange.

• OptimumStarttoachievetherighttemperatureatthe

righttime.

• Built-inMemoryholdstheuserprogramindenitely.

Description

The Honeywell CM727 is a

programmable room thermostat

designed to control your heating

system efciently, providing

comfortable temperatures when

you are at home and energy

savings when you are away. The

following instructions explain how

toprogramandusethethermostat

toprovidethemosthomecomfort

attheleastcost.

Controls Layout

LCDScreen

BatteryLowIndicator

TimeDisplay

BurnerOnIndicator

DayIndicator

TemperatureDisplay

HolidayFunctionButton

ProgramButtons

CopyDayButton

SetDate/DayButton

TimeChangeButtons

TemperatureChangeButtons

TemperatureEnquiryButton

OperatingModeButtons

GreenOKButton

BatteryCompartment

BatteryCover

COPY

D AY

DATE/

D AY

1. . 4

AUTO

1234567

AU TO

MAN

OFF

1 2 43 5

PROGRAM

CM727

SETTING-UP THE CM727 ‘Getting Started’

This section shows you how to setup and run the thermostat in 3 simple steps:

STEP 1: Installing the Batteries

Note: Please follow the instructions in this section only if the thermostat screen is blank (no

symbols or digits are displayed). If the room temperature is already displayed move on to Step 2:

Setting the Date and Time.

To install 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 8).

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.

STEP 2: Setting the Date and Time

To set the Date and Time:

a. Press the DATE/DAY 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 06

= 2006) then press the green button to conﬁrm.

The date is now stored and the Day Indicator will be displayed

under the current day of the week (e.g. 1 = Monday, 2 =

Tuesday, etc.)

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.

STEP 3: Running the Built-in Heating Program

Thethermostatisnowreadyforoperation.PresstheAUTO buttonandthebuilt-inheatingprogram

willstartrunning.Note: The built-in heating program has been designed to provide normal comfort

requirements, but if you want to customise the settings please see the next section ‘Programming

the CM727’.

‘Efﬁcient Daily Use’ PROGRAMMING THE CM727

Modifying the Heating Program

To change the heating program:

Press either of the PROGRAM  or  buttons to

entertheprogrammingmode.Thetime/temperature

settings for period

 on Monday (Day 1) will be

ashingasshown.Theactiveperiodishighlightedby

aashingsquarearoundthenumbersatthebottomof

thescreenandtheselecteddayisshownwiththeday

indicator.

Toadjusttheperiodstarttimeusethe or buttons,the‘OK?’indicatorwillbedisplayedto

conrmthechange.Holdingthebuttondownwillchangethetimequickly.

Note: If you are pressing the or buttons and the display ﬂashes the next period, it

means the next period will be pushed forward.

c. Oncetherequiredtimeisreachedpressthegreen buttontoconrm.

Note: If the original time setting did not require adjustment press the green button to move

to step ‘d’.

d. Thetemperaturesettingforperiod 1onMonday(Day1)willnowbeashing.Toadjustthis

pressthe or buttonsandconrmthesettingagainbypressingthegreen button.

e. Thenexttimeandtemperatureperiodwillnowbeactive.Adjustthisbyrepeatingstepsb-d

aboveuntilall4periodsaresetforMondayorpresstheAUTO buttontoruntheprogramas

set,atanytime.

You now have a choice of how to set the program for the next day:

1234567

4321

The Built-in Heating Program

Thebuilt-inheatingprogramhas4temperaturelevelchangesperdaythatcanbesetbetween

3.00amand 2.50am the following day- allowingyou to maintain the eveningtemperature after

midnight. Each temperature level can be set between 5°C and 35°C, and adjusted in 0.5°C

increments.Thefactorydefaultprogramforheatingisasfollows.

Reviewing the Heating Program

TorevieworedittheheatingprogramusethePROGRAM or buttonstonavigatebetweenthe

4individualprogrammingperiodsforthatday.UsetheDATE/DAY buttontostepthrougheachdayof

theweek,sothecomplete7dayheatingprogramcanbereviewedoredited.

Period 1 2 3 4

Time 6:30 8:00 18:00 22:30

Temperature 21°C 18°C 21°C 16°C

Monday to Friday

(Day 1 to 5)

Period 1 2 3 4

Time 8:00 10:00 18:00 23:00

Temperature 21°C 21°C 21°C 16°C

Saturday & Sunday

(Day 6 & 7)

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