Help me understanding my heating installation and replacement

[SJB060685]

From what I can see on the new board the pump live is activated through end switch on zone valve and there must be a link to bring the boiler on that I cant see in diagram. If you follow the wiring diagram you should be ok

 

[Brambles]

UH8RF controls the pump differently to a UH4 ( the former has an adjustable delay setting).

The current wiring for your UFH looks incomplete for the valve.

You really need an “as built” wiring diagram for your existing system - to properly understand how it is configured.

 

[ShaunCorbs]

Looks fine to me just wire it as instructions probably picking up a neutral from somewhere by the valve

 

[Teebag]

Thanks all ; much appreciated.

I guess that the wiring on the valves is generally "safe"? ie so long I don't plug 220 on those I should be safe to make a mistake? I think I need a multimeter!

 

[ShaunCorbs]

Yes just follow your existing zones eg two into one

turn the power off before any works check that it is off with a multi meter

 

[RoryD]

Hi guys,

Thanks so far for the ones who responded to my thread.

I am now really going for a full replacement of the current controls with Nest Thermostat ones. I think this is how the installation would look like:

• I get rid of the the Dangoss programmer (it will be replaced with the Nests)
• Hot water and radiators valves connected onto one Nest
• UH8 zone 1 connected to one Nest
• UH8 zone 2 connected to one Nest

Does that make sense?

Thanks
[automerge]1576247823[/automerge]
EDIT: actually the UH8-RF can't be used with anything else to control it. So I need a new underfloor heating wiring center. I will go for the UH4, I don't need 8, without the "RF" feature. Does that make sense to you?

If that is Nu-Heat UFH it will not operate correctly with a NEST as I was informed by Technical. Nu-Heat supply a similar unit that functions the same. also.....my concern is......why are you called Tee bag?? ........

 

[Teebag]

If that is Nu-Heat UFH it will not operate correctly with a NEST as I was informed by Technical. Nu-Heat supply a similar unit that functions the same. also...my concern is....why are you called Tee bag?? .

Which "unit" do you mean? The wiring center? On paper the UH8-RF is doing the same as UH4 but with the wireless part.

Re the nickname it's a long story.

 

[RoryD]

Which "unit" do you mean? The wiring center? On paper the UH8-RF is doing the same as UH4 but with the wireless part.

Re the nickname it's a long story.

The Underfloor Heating is not responsive to temperature settings remotely unless Nu Heats isused(I just believed and used theirs which worked great). Judging by your pic your Nickname came from when you served?

 

[Teebag]

The Underfloor Heating is not responsive to temperature settings remotely unless Nu Heats isused(I just believed and used theirs which worked great). Judging by your pic your Nickname came from when you served?

Hm I am not familiar with Nu Heats ; is it a specific brand for the manifold? Can you tell it from the very picture of the OP? ("20191120_161226.jpg").

Nickname is from silly jokes at Uni and image is from gaming ; sorry I didn't serve.

 

[RoryD]

Hm I am not familiar with Nu Heats ; is it a specific brand for the manifold? Can you tell it from the very picture of the OP? ("20191120_161226.jpg").

Nickname is from silly jokes at Uni and image is from gaming ; sorry I didn't serve.

Actually you are right it isn't Nu-Heat. However try to identify the Manufacterer and find out if it is possible. Regarding the "Spaghetti"... That is par for the course in most cases. Sometimes if there is an issue, it's best to call someone in.