Make of UFH stat???

[KingDave123]

Hey there,

Just been to look at a job where the client has a plumbed UFH system using these thermostats pictured below. My question is what make are they? She would like a simpler system. I opened the cover and there was no clue as to what make it is. There was also only 2 wires connected in with no labels on the terminals. I thought there should be 3??! She is ultimately looking for a better and easier to program thermostat.

Any help is greatly appreciated.

g

 

[Dan Robinson]

Replace with CM907's or even Better - Evohome.

I assume there was a pair of batteries in there?

 

[KingDave123]

Hi Dan,

Thanks for the reply. I didn't notice any but that wasn't to say there wasn't. I may have to go back and check!

Cheers again!

 

[Dan Robinson]

They look horribly like Horstmann, but a lot of UFH companies get cheap tat like that shipped in from god knows where.

Assuming they are just volt free relays in there, then my opening suggestion is easy.

 

[PullerGas]

Looks like Grasslin?? But if you follow Dan's lead you'll not go far wrong.

 

[Diyisfun]

I have one & the instructions.
I will find them. The font on the instructions is so small, you will need to read it on a pc, printing it will be a waste of time.

 

[Diyisfun]

There you go. Instructions

 

[KingDave123]

Thanks very much for your input guys! Much appreciated. Would any of you know if there is a smaller option on the market than the CM907? It's quite a bit larger than the existing.

 

[KingDave123]

Hi guys, Back again! Would the Heatmiser PRT-B thermostat be a suitable replacement? Looks a much better size than the honeywell as suggested?