Check my wiring diagram

[cliffed]

Yea it's the switch wire,but connected to the Lr,shouldn't it be off the ufh control box

 

[davesparks]

Yea it's the switch wire,but connected to the Lr,shouldn't it be off the ufh control box

It is connected to the ufh control box in the diagram. The terminal is labelled Lr

 

[cliffed]

Shouldn't brown of the ufh go to sl,Pump to live,Lr & Ls connect to grey & orange respectively

 

[Leesparkykent]

Shouldn't brown of the ufh go to sl,Pump to live,Lr & Ls connect to grey & orange respectively

The boiler enable connections in the wiring centre will be volt free. In the diagram gigsy has fed one side of the relay so when it closes when calling for heat it will feed the brown of the UFH 2 port valve which will then motor the valve round closing the micro switch between grey and orange and fire the boiler.

 

[cliffed]

Yea & can see that,
Looking at the control box,Lr & Ls should be grey,orange,Pump to live,valve to switch live,which is controlled by ufh stat.

 

[davesparks]

Shouldn't brown of the ufh go to sl,Pump to live,Lr & Ls connect to grey & orange respectively

No, the boiler connections labelled Ls and Lr in the ufh controls are just a pair of volt free connections.
I think you're getting confused by the fact they have been labelled the same as the permanent live out (Ls) and switched live (Lr) of the boiler.

 

[davesparks]

Yea & can see that,
Looking at the control box,Lr & Ls should be grey,orange,Pump to live,valve to switch live,which is controlled by ufh stat.

If you connect the grey and orange of the valve to Ls and Lr in the ufh control then nothing will happen!

 

[cliffed]

Ok,it does say boiler on the terminals,I can see the actuator is controlled by the stat,the valve terminals just not hitting the spot for me,still a very good drawing,though.

 

[cliffed]

If you connect the grey and orange of the valve to Ls and Lr in the ufh control then nothing will happen!

Well it would ,would be linked up to the other switch cables orange & grey

 

[cliffed]

At the ufh box,you already have a L N supply,no need to add another,still think Ls Lr,orange/grey,Pump to L, valve to Sl,bit confusing why you would have it marked Pump only.

 

[davesparks]

Well it would ,would be linked up to the other switch cables orange & grey

Now I'm completely lost, if you do that then what will open the valve?
The Lr and Ls labelled 'boiler' in the ufh control is the volt free contact to signal the external controls when heat is required. This can be any external controls
In this particular system design this needs to open the motorised valve which then fires the boiler.

 

[cliffed]

My thinking is the s/l on the control box

 

[davesparks]

At the ufh box,you already have a L N supply,no need to add another,still think Ls Lr,orange/grey,Pump to L, valve to Sl,bit confusing why you would have it marked Pump only.

It isn't another live supply. The control has a mains supply L N E and two volt free N/O contacts one pair labelled pump and the other labelled boiler.
This gives you two switched outputs from the control box.
as I said before, this can operate with any external controls or systems, not just a boiler with a 240V switched live. It could work with a more complex system, a low voltage control system etc etc

 

[davesparks]

My thinking is the s/l on the control box

But in this situation that is used for the ufh pump, you could use it to also open the valve and then not use the contacts labelled boiler at all.

 

[cliffed]

Ok,I'm off out to enjoy Friday,have a good one