i want to replace my old Landis & Gyr 2 Channel Programmer Timer Clock RWB2, with an up to date cmt927 wireless honeywell. ive gotten stuck on the wiring as there more wires then i am used to! any help would be appreciated
replacing old programmer
- Thread starter Ashb741
- Start date
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Hello Ashb741 and welcome to the forum.
You will need to give us a bit more information. As a minimum we need to know what wires you have in the old programmer and what terminals they go to. A photograph would help, if you can get one that is clear and in focus.
Whilst there is some commonality between heating systems, there are many differences which effect the wiring. Boilers are different, some have one motorised valve, some have two motorised valves and some don't have any at all. Some have room and cylinder thermostats others don't etc., etc., So any additional information you can give will be helpful.
You will need to give us a bit more information. As a minimum we need to know what wires you have in the old programmer and what terminals they go to. A photograph would help, if you can get one that is clear and in focus.
Whilst there is some commonality between heating systems, there are many differences which effect the wiring. Boilers are different, some have one motorised valve, some have two motorised valves and some don't have any at all. Some have room and cylinder thermostats others don't etc., etc., So any additional information you can give will be helpful.
Hi,
The RWB2 is a programmer, you need it to control the hot water as well.
The CM927 is a programmable stat for the heating side, so you'll need to keep the RWB2.
Have a look at the Honeywell Pack 2 which is a programmer and wireless roomstat so does what you need.
The RWB2 is a programmer, you need it to control the hot water as well.
The CM927 is a programmable stat for the heating side, so you'll need to keep the RWB2.
Have a look at the Honeywell Pack 2 which is a programmer and wireless roomstat so does what you need.
thanks for the reply's and the welcome 
i have not sussed out the sight just yet but will do soon, as i no diagrammes and pictures help a lot, have just had a look at the programmer and seen it is only for ch so will have to change it (yes i picked it up my self so my bad )
i have not sussed out the sight just yet but will do soon, as i no diagrammes and pictures help a lot, have just had a look at the programmer and seen it is only for ch so will have to change it (yes i picked it up my self so my bad )Sponsored Links
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