Quick check please? Voltage!

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Quick check please? Voltage!

Post  J4m1e5 on Wed Oct 24, 2012 11:09 am

I am looking for a massive favour from someone. Im having a bit of a nightmare with my hot water. All i need is someone to do a quick test. The test is: when the hot tap is turned on can you check the voltage at the water pump for me please. I am getting 70v with the water on and i want to be 100% before i buy a ACB.

Thanks a lot

J4m1e5

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Re: Quick check please? Voltage!

Post  J4m1e5 on Mon Oct 29, 2012 4:44 pm

Can no one help me out?

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Re: Quick check please? Voltage!

Post  mike on Mon Oct 29, 2012 5:50 pm

The reason why is.
Quote from Gledhill spares ref DHW pumps;

Further to our telephone conversation, I can confirm that the Grundfos pump we stock is in fact different to the standard one that most merchants stock – ours modulates down to about 50 – 60 volts whereas the standard ones stop at about 150 volts.
I hope this answers your question.
So your answer is,
Anything from 50 to 60 volts up to 230volts. Average 130 ish.
PHE sensor and DHW sensor.
Pump goes slow and fast to pump through the PHE to maintain the 50 to 55 c temperature.
Oh
Check out the posts ref BM 2000 PCB's
You may repair it for £4:00p
Hint those posts were after yours or added to.
Your answer was in that post I directed you to.
But I suppose the saying can not see the wood for the trees.
Been there myself.

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Re: Quick check please? Voltage!

Post  scorp on Fri Nov 02, 2012 10:04 am

J4m1e5 wrote:Can no one help me out?
Just want to clear something out for your better understanding. When you supplied 230V to the pump it sends maximum amount of system hot water through PHE which gives in good working system water to your tap up to 80C(obviously less by different reasons) which I'm sure at least for safety reasons you don't want. So normal condition for the pump, as Mike mentioned several times, is 50-130V

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Re: Quick check please? Voltage!

Post  J4m1e5 on Fri Nov 02, 2012 11:28 am

Mike didnt actually say that the voltage coming from the PCB would be 50v. Couldnt get a straight answer. If only you had posted last week before i ordered the PCB! Thanks a lot anyway, new pump is on its way.

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Re: Quick check please? Voltage!

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