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S Plan Help

Manufacturers instructions. Two flex cables from PCB one says mains other says pump.

i would double check you have a system boiler and not a heat only boiler look under the boiler and look up you should see a pump if you dont its a he boiler and wire it up like a normal s plan with the pump by the cylinder (which i think you have) , if you do you don't need the second pump and wire it up like main say
 
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Just had a look and it says this in the manual: -

4. The boiler incorporates a circulating pump and expansion vessel. It is suitable for use only on fully pumped sealed systems.
 
Just had a look and it says this in the manual: -

4. The boiler incorporates a circulating pump and expansion vessel. It is suitable for use only on fully pumped sealed systems.

(no f and e tank in the loft then) wire it up as pg 14/ what ever it is in your man book then depending on what valve you have 2 or 3 port
 
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My Dads a Plumber and he's convinced there isn't one from the manufacturers instructions. I'm gonna have a visual check on it tomorrow and report back! Thanks.
 
What is actually wrong with the system as it is, before you start mucking around with it?
 
Circulating pump in cylinder cupboard went so that was replaced by a Plumber about two weeks ago. When pump was changed water ****ed everywhere and got onto one of zone valve which blew. He then got a second hand one from shed and fitted it. Now when he turns room stat down the heating stays on. Second hand zone valve must be faulty as well. The whole wiring centre box is broke and needs replacing. He wants to uofate update st699 programmer to a digital one. Got a complete kit for £140.
 
Why not also get an experienced electrician to do the job?
Most of is will charge more to pick up the pieces of a DIY job than to do it from the outset.
Plus there is the small matter of electricity being somewhat deadly if you make the simplest of mistakes,
 
It's not just following a wiring diagram though.
You need to also understand the wiring regulations and how to apply them in a practical situation.
 

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