Boiler programmer with 2 remote room stats

[Timmyturtle]

I need to source a new boiler programmer to replace an old Randall one

The house needs 2 seperate room stats ,as it has an extension room seperate from the main house,thats needs its own 2 port valve so i can heat it with the rest of the house not heating(dont worry about the plumbing)

Does anyone make one and can you recommend one?

Thanks

 

[luminaire]

I would have thought you would find all you need to know here

 

[Timmyturtle]

Thanks,but has anyone fitted one,or recommend one?

 

[bernardgreen]

Yes I have fitted one, three room thermostats on a zoned system.

This is a DIY designed and installed system so may not be compliant with accepted methods. It has been working for 25 years.

Very basic description.

Room thermostats closing put switched live to the two port zone valve to open it. When the valve is open its micro-switch extends the switched live back to the boiler control where the two port valve supplying heating is opened by the switched live. When this valve is open its micro switch extends switched live to the boiler.

 

[Timmyturtle]

Customer for some reason wants 2 RF stats to cut out wiring,the extension he wants on another circuit is quite far from the programmer etc