Magnaclean Professional 2 installation query

km1500

I am thinking of installing a Magnaclean and I know ideally it should go on the return just prior to the boiler. I have no access there so was thinking of installing it in the flow. In the photo, is the pipe on the right the flow to the radiators? I assume after the pump the white thing is a motorised valve switching the hot water from the boiler to either the left to the hot water cylinder to heat the water, or to the right which I assume goes to the radiators via pipework under the floorboards?

I would cut the 22mm vertical pipe on the right (the pipe that goes trough the white carpet) and install the Magnaclean there. Is this correct? Thank you in advance.

grumbler

Yes, it's not the return pipe, but I don't think the position of the filter makes much difference.

plumb1_2

Fit it on the return from the cylinder 

ThisIsWeird

Km, if you haven't bought the Magna yet, check out the alternatives. I think there was an all-metal model, probably best suited to going on the flow - if you really must.
Any chance of a pic of the boiler, and the pipes going to it? Where do the pipes go to?

grumbler

grumbler said:

Yes, it's not the return pipe, but I don't think the position of the filter makes much difference.

Maybe it's not the best idea after all. For half a year, when heating is off, the filter won't work.

bris

I've fitted lots on the flow due to restriction on the return pipes and as far as I can tell it really doesn't make much difference.

The theory behind the return fitting is that the magnetite gets caught before it gets back to the heat exchanger but it keeps getting pushed round so it gets caught just the same.

Run it with Fernox F3 for up to a week, checking and cleaning the filter every couple of days, when you see most of the build up on the magnet is gone drain the system use the filter to put Fernox F1 inhibitor in, screw the lid back on and refill the system.

The filter should be checked again at its next boiler service.

plumb1_2

grumbler said:

grumbler said:

Yes, it's not the return pipe, but I don't think the position of the filter makes much difference.

Maybe it's not the best idea after all. For half a year, when heating is off, the filter won't work.

if it’s fitted on the cylinder return it will. And while it’s drained off I’d alter that bypass.

grumbler

plumb1_2 said:

grumbler said:

grumbler said:

Yes, it's not the return pipe, but I don't think the position of the filter makes much difference.

Maybe it's not the best idea after all. For half a year, when heating is off, the filter won't work.

if it’s fitted on the cylinder return it will. And while it’s drained off I’d alter that bypass.

I know, but the OP meant 22mm CH pipe and my first comment referred to it.

BTW, can you explain, what is this bypass for?

ThisIsWeird

Fit an auto by-pass? 

Ah, of course, bris - the recommended 'return' installation will be to catch it before it hits the boiler, probably a significant point if cleaner is also added; that tends to result in a sudden release of loosened sludge, and I'd rather that were caught right away too.
And fitting the filter on a single return pipe is surely a compromise too, and will slow down the removal of CH sludge? Obviously the whole system water will ultimately be passing through the filter, but surely it's less than ideal (or I'd rather have it on just the CH return if I had to choose).
KM, could we have that pic of the boiler, please?
It's ok to take a couple of short tails away from the main return, ideally using swept elbows, to allow the filter to be fitted a bit 'remotely' if needed, and I'd much rather that, KM, if possible.

km1500

Hi thanks everyone for your input it is much appreciated.

I will attach a picture of the boiler - it needs replacing but I was wanting to flush the radiators and fit a Magnaclean (or alternative if better) so minimise cost when the boiler change is quoted for.

As you can see there is not much room by the boiler and even if there was it would look a bit ugly in the kitchen (unless the whole lot was boxed in which I don't want to do). Hence my query about fitting it out of sight in the airing cupboard.

So - should I go ahead and cut the 22mm pipe on the right and fit a Magnaclean?
.
What does the 15mm bypass pipe do?

Thank you

km1500

This is a picture of the boiler...