Honeywell Control Systems Ltd.Arlington Business Park,BracknellBerkshireRG12 1EBTechnical Help Desk: 08457 678999www.honeywelluk.com
CM921 - User Guide
1 day Wireless Programmable Room Thermostat
with LoT technology
42011077-103 R2 (draft2)© 2009 Honeywell International Inc.
Description
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....
                                            

                                                    CM927 - User Guide
7 day Wireless Programmable Room Thermostat
with LoT TechnologyDescription
The  Honeywell  CM927  is  a  ‘wireless’  programmable  room  thermostat  designed  to 
control your 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...
                                            

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2
1
A  room  thermostat  simply  switches  the  heating  system  on  and  off  as  necessary. 
It  works  by  sensing  the  air  temperature,  switching  on  the  heating  when  the  air 
temperature  falls  below  the  thermostat  setting,  and  switching  it  off  once  this  set 
temperature has been reached. Turning a room thermostat to a higher setting will 
not make the room heat up any faster. How quickly the room heats up depends on 
the design of the heating system, for example, the size of...
                                            

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Operating indicators / Indicadores de funcionamiento / Indicateurs de fonctionnement / 
Bedrijfsmodussymbolen / Betriebsanzeige / Indicatore di funzionamento / Kezelési 
útmutató / Stavové symboly / Wskaźniki pracy regulatora / Stavové symboly
2 x LR6 AA Alkaline
Heating demand indicator
Indicador de demanda de calefacción
Indicateur de demande de chauffage
Warmtevraagsymbool
Anzeige Heizlastanforderung 
Indicatore di richiesta riscaldamento
Hőigény jelzés
Symbol požadavku na sepnutí kotle
Wskaźnik...
                                            

                                                    i
evotouch   
                                            

                                                    i
evotouch   
                                            

                                                    RTH2300/RTH221
Programmable Thermostat
Quick Installation Guide
69-2448ES-03 
                                            

                                                    USER GUIDETO BE LEFTWITH USER
ST6400A  Programmer
42009084-006 R1
INTRODUCTION 
The  ST6400A  programmer  controls  your  central 
heating  system.  It  will  enable  you  to  select  the 
times  when  heating  and  hot  water  are  switched 
ON and OFF.
FEATURES 
• 24 hour heating programme.
• 24 hour hot water programme. 
• Two ON/OFF switching times per day.
• Built-in  programme  with  typical ON/OFF 
times.
• Override buttons for heating and hot water.
• Extra hour buttons for heating and hot...
                                            

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