CH pump - fast or slow?

[Hugo Nebula]

Which is best - running a central heating pump at its fastest or slowest speed setting?

[Lurch]

On Tue, 14 Dec 2004 23:46:12 +0000, Hugo Nebula strung together this:

Depends, there's a setup process involved. Generally faster for bigger systems, but run it so it works and it's quiet.

[Alan]

In message , Lurch wrote

Depending on your system, make sure the faster speeds are not pumping hot water into the header tank.

[Lurch]

On Wed, 15 Dec 2004 00:27:40 +0000, Alan strung together this:

Thanks but the pump in my combi is set perfectly. If I have any problems withh pump speed I'll be sure to ask though.

[Set Square]

Run it at the lowest speed which gives an adequate performance. With a conventional boiler, this would imply an 11 degC drop across all radiators when they are correctly balanced.

[Malcolm Reeves]

The right speed. Boilers are designed for 80C out, 70C back, a 10C drop. Radiators are designed for 75C average temperature.

To fast and boiler drop is 10C. Efficiency is higher but

[IMM]

Misadvise. You run it to what the balance procedure dictates.

[Set Square]

Haven't seen you for a bit. I was begininning to think that you'd taken the advice you offered to me - and topped yourself!

Since you *are* still around, please explain in words of one syllable how my advice gives a different result from following the balancing procedure.

[IMM]

I repeat...."You run it to what the balance procedure dictates".

[Roger]

The message from "IMM" contains these words:

Why don't you answer the question? You can't of course which is why you answer anything that baffles you with obfuscation.

[IMM]

I repeat...."You run it to what the balance procedure dictates".

[Lurch]

On Wed, 15 Dec 2004 22:37:25 -0000, "IMM" strung together this:

[IMM]

tsk, tsk, tsk.

[Roger]

The message from "IMM" contains these words:

You need to detail your proprietary balance procedure to demonstrate that it does indeed dictate the pump speed rather than adding it on as a corollary.

[IMM]

The standard balance procedure. You do not guess the pump speed.

[Lurch]

On Thu, 16 Dec 2004 10:20:57 -0000, "IMM" strung together this:

Why don't you f*ck off and die?

[IMM]

Do not give advise on something you know nothing.

[Lurch]

On Thu, 16 Dec 2004 11:36:54 -0000, "IMM" strung together this:

Do not give advise on something you know nothing.

Now be a good chap and f*ck off and die.

[IMM]

I have an echo.

I repeat: " Do not give advise on something you know nothing."

[Set Square]

Where did you learn your English?

Did you mean to say "Do not give adviCe on something ABOUT WHICH to know nothing"?