Heating wiring advice

[Pauly]

I have wired a heating system with 8 heating control zone valves and 1 on water,all work ok,problem is it has heating pump which comes on with heating valves but also with hot water zone valve,how can I separate the heating pump to only come on with the 8 valves.

 

[bill01803]

relays

 

[davesparks]

You need to install a relay to seperate the heating pump, just make sure there can't be a situation where the boiler fires without a pump running

 

[Pauly]

I understand that mate but where do I feed the relay from bearing in mind there's 8 valves and I don't want to connect all together so if 1 valve opens it brings on all the others

 

[Midwest]

What 'valves' are they?

 

[Kamikaze]

I always thought you needed the hot water on for the heating to work. But to get hot water only one had to separate it from the heating?

 

[Corbs]

If there two ports valves you won’t need to add a relay as each port valve has a micro switch

So you have two pumps correct ? Else how is the hot water fed

 

[Kamikaze]

I always thought you needed the hot water on for the heating to work. But to get hot water only one had to separate it from the heating?

It’s alright, I’ve answered my own question.
Here is a wiring diagram for an S plan.

 

[Pauly]

Yes there are 2 pumps hot water pump comes on with switch live from cylinder stat and I've put heating pump on with the orange wire fed from the 8 zones but it also comes on with the hot water valve

 

[Midwest]

You wiring needs to be installed & connected in relation to the plumbing installation. What has the plumber told you to install?

It sounds like an S Plan would be suitable, but without know what the plumber has put it, we would be guessing.