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5

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  fixed  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 flashing 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 

flash 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 confirm 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’

Summary of Contents for CM721

Page 1: ...1 CM721 2 6 CM727 7 11 USER GUIDE ...

Page 2: ...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 1 2 3 6 11 12 13 7 8 9 10 4 5 Battery Cover Program Buttons Time Change Buttons S...

Page 3: ...egin 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 curren...

Page 4: ...od will be pushed forward c Once the required time is reached press the green button to confirm 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 flashing To adjust this press the or buttons and confirm the setting again by pressing the green button e The next time and temperature period will now...

Page 5: ...re 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 flashing 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...

Page 6: ...r 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 heat...

Page 7: ...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 ro...

Page 8: ...esigned to control your heating system efficiently 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 1 2 3 4 5 6 Holi...

Page 9: ...he 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...

Page 10: ...onfirm 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 1 2 3 4 5 6 7 4 3 2 1 The Built in Heating Program The built in heating program ...

Page 11: ...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 flashing 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 a...

Page 12: ...Special Functions HOLIDAY Function The holiday function allows you to set a constant temperature default 10 C for a specified number of days from 1 99 days This lets you save energy and related costs when you are away from home but resumes normal operation on the day of your return To set the Holiday function a Ensure the thermostat is running in AUTO or MAN operating modes b Press the holiday but...

Page 13: ...ackward 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...

Page 14: ...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 This product and its associated documentation and packaging are protected by various intelle...

Page 15: ... clear after a few minutes contact your installer Your installer has set a scheduled maintenance alert period on your CM727 as a recommendation that your heating system should receive a routine inspection Call your installer to arrange a maintenance visit Note The CM727 and heating system will continue to operate as normal RF communication lost due to the wrong location of the room unit Hook the r...

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