Central Heating F @ E tank feed pipe gets too hot

[Johntheo5]

This is the way every UPS 3 and just about every other pump I can think of comes out of the box, writing the right way up - flow is upwards
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That's quite correct, but if you then removed the 4 stud bolts from the pump head and swung it through 180 deg, the pump will still pump upwards but the head/label will be upside down but this will in no way affect the pump flow direction, the pump doesn't care where the head is positioned.

 

[Madrab]

That's quite correct, but if you then removed the 4 stud bolts from the pump head and swung it through 180 deg, the pump will still pump upwards but the head/label will be upside down but this will in no way affect the pump flow direction, the pump doesn't care where the head is positioned.

You're absolutely right - and i am aware that the pump head can be removed from the body, done it many times, but if it came out the box like normal and the OP's plumber hasn't touched it - as there would be no obvious reason why he would have changed the head orientation - then going by the pic of how the pump is now piped - then it has to be pumping upwards towards the feed and vent. Ergo ... creating the unwanted extra flow or warmer water up into the F&E cistern.

We need this pic at a slightly different and showing the side of the pump showing the arrow direction and where the 2ports/ABV are now, if it's pointing downwards then that would be highly unusual for grundfos to ship it like unless, of course, there was a good reason to change it.

 

[Johntheo5]

We need this pic at a slightly different and showing the side of the pump showing the arrow direction and where the 2ports/ABV are now, if it's pointing downwards then that would be highly unusual for grundfos to ship it like unless, of course, there was a good reason to change it.

There was a very good reason to change it (hopefully), the pump was required to pump in a downward direction, just like mine, below, and no doubt, thousands of others.
You don't remove the head to swing it around, you just remove the 4 stud bolts, swing it through 180 deg, replace the stud bolts, literally a 5 min job.

 

[Madrab]

But all that normally would be done is undo the whole pump @ the valves and turn the whole thing through 180deg to pump downwards as it would be easy to do that on that layout, so the pump head/writing would be upside down, as you said the pump head doesn't care.

Presume yours was done like that so the pump was pumping downwards but the head was oriented correctly so it looked right. Though again as you said the head doesn't care, so wouldn't have really mattered in the OP's case or yours?

I've had pumps sitting 'upside down' in the rare occasion of a downwards flow pipe as I have found cracking the head off the body can sometime damage the seal, had a couple do it, so easier just to leave it upside down.

 

[Johntheo5]

My pump came straight out of the box, so, because I required it to pump downwards, I had to swing the head through 180 deg to correct it.

 

[Madrab]

My pump came straight out of the box, so, because I required it to pump downwards, I had to swing the head through 180 deg to correct it.

What I mean is the pump would have worked fine either way, it would just have meant that the head writing and control ets would have been 'upside down'. Not sure if that matters with a WILO.

I know Grundfos don't care, the heads can be upside down (not meaning underneath the pipe), maybe the OP's plumber did change the head orientation just so it looked the right way up but that was the basis of my question, what I meant was it didn't need to be changed.

I think that was a long road for a shortcut

 

[dilalio]

I did say, in my original comment about pump orientation, that "unless head of pump has been changed round"...

Unless the head of the pump has been changed round, your first pic has pump direction different to your 2nd pic!

Can you confirm arrow on body of pump is pointing down?

I assumed it probably had been (well hoped also) as I can't see the detail of the arrow on my phone screen.

If it can be seen on a larger computer screen then all is good. It didn't need to be rotated but does look better to fussy punters.

 

[Johntheo5]

Calling @Stuck1, calling at @Stuck1, please report ARROW orientation immediately.

 

[Madrab]

We need this pic at a slightly different and showing the side of the pump showing the arrow direction and where the 2ports/ABV are now,

 

[fixitflav]

No it doesn't/wouldn't, it just means that the feed and vent could now be in the wrong position, it doesn't show where the 2 port valves/ABV are now, that could all have been changed too and the pump is pumping towards them as it should, so flow for the boiler etc could be correct.

We know which the boiler flow pipe was originally, the one going across the top of the tee above the cylinder. So unless it's been replumbed local to the boiler, which the OP hasn't mentioned, if it's pumping upwards on the new arrangement it's the wrong way through the boiler.

If it has been replumbed at the boiler, it's now boiler flow - rads/cylinder - motorised valves - pump - cold feed - open vent - boiler return. Unusual, but it might work!
But it would clear all this up if the OP would tell us which way the arrow on the pump points.

 

[dilalio]

Waiting with baited breath!

 

[Stuck1]

Thanks Madrab.
Just to clarify; the head was turned through 180 degrees from original so the pump is pumping down. In fact the arrow on the brass body points downwards.

 

[fixitflav]

Waiting with baited breath!

Thanks Madrab.
Just to clarify; the head was turned through 180 degrees from original so the pump is pumping down. In fact the arrow on the brass body points downwards.

Phew

 

[Madrab]

Thanks Madrab.
Just to clarify; the head was turned through 180 degrees from original so the pump is pumping down. In fact the arrow on the brass body points downwards.

Thanks for that @Stuck1

 

[fixitflav]

Anybody know where we've got to now?