Honeywell CM921 ユーザーズマニュアル

Arlington Business Park,

Bracknell

Berkshire

RG12 1EB

Technical Help Desk: 08457 678999

www.honeywelluk.com

42011077-103 R1

© 2006 Honeywell International Inc.

The Honeywell CM921 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 CM921 Programmable Room Thermostat.

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  CM921  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.

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.

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).