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CM927 - User Guide

7 day Wireless Programmable Room Thermostat
with LoT Technology

Honeywell Control Systems Ltd.

Arlington Business Park,
Bracknell
Berkshire
RG12 1EB
Technical Help Desk: 08457 678999
www.honeywelluk.com

42011077-703 R1
© 2006 Honeywell International Inc.

Description

The Honeywell CM927 is a ‘wireless’ programmable room thermostat designed to 

control you heating system efficiently, providing comfortable temperatures when you 

are at home and energy savings when you are away. With ‘wireless’ communication 

there is no need to provide a wired connection between the thermostat and boiler.

The  following  instructions  explain  how  to  set  up,  program  and  operate  your 

Honeywell CM927 Programmable Room Thermostat.

Features

Wireless connection

 to the boiler allows you to mount the Chronotherm in your 

room without decor disruption

Armchair  programming

  feature  lets  you  program  your  Chronotherm  while 

resting comfortably in your armchair

Ergonomic  User  Interface

  features  an  ‘

OK-button

’  making  the  CM927  very 

easy to use so you always stay in control.

LoT Technology

  provides  informative  ‘on-screen’  feedback  and  operational 

assistance to the user.

Extra  Large  LCD  (Liquid  Crystal  Display)  Screen  with  Backlight

  provides 

added user friendliness and clearer viewing – even in the dark.

7-day heating program

 lets you set the CM927 independently for each day of 

the week to match your lifestyle, whilst maximizing energy savings.

6 independent temperature levels per day

 lets you set any 6 temperatures you 

require (from 5 to 35°C) so you can enjoy economical comfort every day 

Holiday button

 saves energy by letting you reduce the temperature for 1 to 99 

days while you are away from home, resuming normal operation on your return.

Party button

 lets you temporarily maintain (or adjust) the current temperature for 1 

- 23 hours. Useful when you have guests or leave the house for a short period.

Day Off button 

copies Sunday’s program into any other day of the week, so that 

you can make the CM927 follow this program if you have a day or days off.

Automatic Summer/Winter Time Change

 will adjust the clock automatically for 

‘Daylight Saving Time’.

Built-in Memory

 holds the user program indefinitely so that it is never lost – 

even if you remove the batteries.

Optimum Start

 option is an advanced feature which ensures that the optimum 

temperature conditions are achieved at the required times (option set by your 

installer).

Summary of Contents for CM927

Page 1: ...feedback and operational assistance to the user Extra Large LCD Liquid Crystal Display Screen with Backlight provides added user friendliness and clearer viewing even in the dark 7 day heating program lets you set the CM927 independently for each day of the week to match your lifestyle whilst maximizing energy savings 6 independent temperature levels per day lets you set any 6 temperatures you req...

Page 2: ...t lets you choose what times you want the heating to be on and what temperature it should reach while it is on It will allow you to select different temperatures in your home at different times of the day and days of the week to meet your particular needs Turning a programmable room thermostat to a higher setting will not make the room heat up any faster How quickly the room heats up depends on th...

Page 3: ...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 ...

Page 4: ...be displayed e Use the or buttons to set the correct time Each press of the button will change the time by one minute and holding the button down will change the time slowly at first and get progressively quicker Once the correct time is set press the green button to confirm then CHANGES SAVED will be displayed for a moment followed by DATE COMPLETE Note If the slider switch is moved at any time b...

Page 5: ...e the DAY button to step through each day of the week so the complete 7 day heating program can be reviewed or edited Modifying the Heating Program To change the heating program a Set the slider switch to the PROG position entering programming mode SET TIME 1 will be displayed and the time settings for period 1 on Monday MON will be flashing The active period is highlighted by a flashing square sy...

Page 6: ...riods are set for Monday or move the slider switch to the AUTO position to run the program as set at any time g After setting period 6 CHANGES SAVED will be displayed as before followed by DAY COMPLETE You now have a choice of how to set the program for the next day h To COPY the Monday s program to another day Press the COPY DAY button to copy Monday s program into Tuesday The display will go bla...

Page 7: ...itch points for your heating requirements Therefore any period from 2 to 6 can be disabled or enabled as follows To disable time periods Go to the desired period 2 to 6 by moving the slider switch to the PROG position then using the and DAY buttons to navigate ensuring the correct period is highlighted with the flashing square symbol Press and hold the button for at least 2 seconds and the display...

Page 8: ...another operating mode or temperature is selected OFF mode 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 This value can be adjusted by calling your installer During Normal Operation Temperature Enquiry In AUTO and MAN operating modes the thermostat will display the current room temperature which is indi...

Page 9: ... holiday indicator c The day after the current day will be selected and RETURN DATE OK will be displayed Press the or time buttons to set the holiday time 1 99 days Note The day and date will update according to the number of days selected d Press the green button to confirm the setting e CHANGES SAVED will be displayed for a moment followed by TEMP OK Press the or buttons to set the holiday tempe...

Page 10: ...y the party hours counter and temperature setting along with the party indicator c The text PARTY DURATION will now be displayed on the screen Use the or buttons to set the number of hours 1 23 hours d Press the green button to confirm the setting e CHANGES SAVED will be displayed for a moment followed by TEMP OK Use the or buttons to set the desired temperature 5 C 35 C f Press the green button t...

Page 11: ...e heating program to run for Note The day and date will update according to the number of days selected d Press the green button to confirm the setting e On confirmation CHANGES SAVED will be displayed on the screen for a moment and then will return to the normal display with the days off indicator displayed The thermostat will now control to the alternative heating program for the set number of d...

Page 12: ...PM reset the heating program to the built in settings and disable or enable the summer winter time change feature To change any of these user s parameters a Move the slider switch to the OFF position then press and hold the button for approximately 5 seconds button for approximately 5 seconds b Once entered the following information will be shown on the screen COPY DAY DAY 1 6 CM927 DATE PROG AUTO...

Page 13: ... the time button once The display will show RESET PROGRAM Press the or buttons to select the preferred setting 0 user program 1 factory program and the display will flash indicating a change has been made To confirm this change press the green button iii Enable or disable summer winter time change Press the time button twice The display will show AUTO CHANGE Press the or buttons to select the pref...

Page 14: ... the heating does not switch on The heating is not required at this moment The heat demand is send to the HC60NG as a value between 0 100 The HC60NG will adjust the boiler on time to meet this requirement That is why the heating will be off sometimes even if the symbol is displayed To check if RF system is communicating properly press the button to increase the set temperature a few degrees above ...

Page 15: ...e connection between the boiler and the HC60NG The red LED on the HC60NG is constantly on or flashing RF communication lost due to the wrong location of the thermostat Hook the thermostat back on the wall bracket or replace the thermostat on the table stand in the position where RF communication was reliable RF communication fault Call installer NOTE You can control the boiler manually when the RF...

Page 16: ...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 ...

Page 17: ...ostat back on the wall holder or table stand HC60NG Relay Box Controls Layout What does it mean when the HC60NG relay box green LED is ON 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 Wall bracket Table stand Push button and relay status LED s ...

Page 18: ... cooling is specified in the table below but this can be modified in the same way as the default heating program Monday to Friday Period 1 2 3 4 5 6 Time 6 30 8 00 12 00 14 00 18 00 22 30 Temperature 24 C 28 C 24 C 28 C 24 C 24 C Saturday Sunday Period 1 2 3 4 5 6 Time 8 00 10 00 12 00 14 00 18 00 23 00 Temperature 24 C 24 C 24 C 24 C 24 C 24 C If something happens to my heating system how can I c...

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