Wet UFH Wiring centre

[dedzyyy]

Hi,
I've installed wet UFH in my place.

I'm struggling with how to wire it up. My gas man is coming to do some jobs and give me a hand starting the UFH for the first time, but I wanted to get a heads up before he comes round.

My UFH is set up with 3 zones.

Here is the back of my stats

This is my wiring centre, which came with no destructions

https://i.Upload the image directly to the thread.com/fRKDpqf.jpg

https://i.Upload the image directly to the thread.com/Sycyg7u.png

The X# obviously controls the heads on the manifold, but how do the stats connect to the centre?

Also, the NC, NO, N, L, N ?

Can anyone shed some light?

Many thanks!
Lee

 

[hasel5]

cool have you installed any cables?

 

[buzzlightyear]

Can anyone shed some light

yep,get some one that know what they are doing .

 

[buzzlightyear]

This is my wiring centre, which came with no destructions

their will be if you blow it up .

 

[Grant webber]

Those thermostats are for electric underfloor heating.

 

[rolyberkin]

Bin that control centre and get a heatmiser UH8-RF and some Neostats!

 

[Leesparkykent]

That looks like Wunda if so theres lots of instructions on their site. It is pretty self explanatory though.

 

[tlangdon12]

L=Live
N=Neutral
NC=Normally Closed
NO=Normally Open
COM0/COM1 = Common Zero and Common One

You need the manual for the rest.

 

[dedzyyy]

Electric UFH stats? It came with the bloody kit...

 

[Blissof89]

Those thermostats are for electric underfloor heating.

Yep, never seen 3 wire control thermostat rated at 16A before

 

[dedzyyy]

their will be if you blow it up .

There*

 

[buzzlightyear]

There

their there.

 

[Blissof89]

Were you sold this whole system or did you just buy separate parts online OP?
The stats will work with the control center but they are completely overkill, each or those stats has a switching capicity of 16A but you are using them for a control circuit that draws minimal amapage. The entire system probably draws 2A.

 

[dedzyyy]

Ah, I see! So they will work, they're just rated higher than necessary?

The manifold and pipe was one kit and the electrical was another

 

[Blissof89]

They are not designed for a traditional wet system, these are stats for electric under floor heating.

You could probably still use them, they make contact when calling for heat like most regular thermostats. Kinda scuffed though, if you can return them and get some more traditional thermostats I would do that.

I'll also add that you will definitely need a back box of some sort to house that stat, maybe even a 35mm deep one. Normal thermostats don't need a back box because they don't house a 16A contact

 

[dedzyyy]

Right, I see.
Well, the house is in bits at the moment, so we're good for fitting back boxes :]

Thank you!

 

[dedzyyy]

Right, I see.
Well, the house is in bits at the moment, so we're good for fitting back boxes :]

Thank you!

 

[buzzlightyear]

You need to speak to wet pants first
before you start wiring it up
the boiler system for instance.

 

[buzzlightyear]

You need to speak to wet pants first
before you start wiring it up
the boiler system for instance.

 

[dedzyyy]

wet pants

 

[buzzlightyear]

wet pants

yes wet pants.

 

[davesparks]

wet pants

Aka the water clowns, though some people do call them plumbers

 

[solarsavings]

So I will have to stop using those stats on wunda underfloor heating then

 

[Blissof89]

It that the stat wunda supply with their kit? Never fitted their system myself. My mistake if so, it looks like most generic electric underfloor stats from the back.

 

[Leesparkykent]

They can be set to pick up air temp or floor temp with a probe. What you have is fine to use.

 

[Toneyz]

There should be a sticker or something of the make and part No. on the control box. Is this to go onto an existing system?

 

[brianmoooore]

IIRC, which is far from guaranteed these days, I fitted some 'stats similar to these a few years back. In spite of having terminals for an external thermistor, they were actually fitted with internal sensors. The terminals were fitted for a different version of the 'stat which did need an external probe.
As for connections, connect N, L and L1 on the 'stats to the corresponding terminals in the control box. I expect the N1 terminals on the 'stats are internally connected to the N terminals (check with an ohmmeter) are will be unused.