Low loss header

[Bob Swayne]

I am writing an expert report on a heating system in a care home and am unable to identify the manufacturer of the low loss header currently installed in the primary heating circuit.

I have attached two photographs of the header showing the primary and secondary connections.

I believe the header has an internal mesh screen dividing the primary side from the secondary side.

I would appreciate it if someone can identify who makes such a unit.

 

[missplumb]

it looks like something that has been made for that particular job. There shouldnt be anything "seperating" the primary and secondary circuits. Is there nothing in the O&M manuals at the nursing home from the installers.

 

[Chalked]

With above.
That looks like a custom made header. There won't be any mesh or separation inside.

 

[snowhead]

What make boilers are fitted to it?

 

[Bob Swayne]

The boilers are the Quinta Pro range manufactured by Remeha, but the low loss header is not of their manufacture.

The reason I know there is a mesh inside is that I had previously seen an exploded view of the header when I first went to the site but there were no manufacturer's details on the diagram. Unfortunately the diagram is no longer available having gone missing from the site.

The O&M manuals are particularly vague on much of the heating equipment and the installation generally, so much so that I am considering putting it forward for the Booker Prize for fiction.

 

[Scott_D]

The mesh might be for dirt/air seperation.
Why is there a need for a report?

 

[Bob Swayne]

The question is does anyone know who the likely manufacturer is?

The need for a report does not specifically relate to the header alone but a whole range of problems and technical issues relating to the heating installation and other matters.

 

[SimonG]

Tbh it could be anybody. There are a couple of little fabrication shops around my way that I get to make the odd oil boiler baffle who would knock something like that up.

 

[Dotty]

Looks custom made does that. How would you remove the mesh to clean it?

 

[Bob Swayne]

The cleaning of the mesh was my concern when I first saw the original diagram.

I had too thought that it was custom made but the exploded view suggested that it was a 'commercially-available' product.

 

[stevetheplumber]

are you sure the exploded view was of this llh could have been a generic drawing never seen a mesh in one

 

[Bob Swayne]

Yes, the exploded view was of this particular low loss header as it was found in amongst paperwork relating to the boiler. However, as I have already stated in an earlier response the low loss header was not manufactured by Remeha.

 

[Dotty]

It is custom made. The majority are.

No LLH manufacturer would put a mesh in them things. And I've certainly never seen one.

 

[Kay101]

I'm guessing it's been made by a fab shop, but they usually use 4" pipe as opposed to box section, the only box section ones I've seen have been provided by a manufacturer, doesn't mean this was though. I don't recall seeing the flow and return so close either, usually some space in between
Why do you need to know? Does it not work? Need replacing?

 

[Bob Swayne]

I agree with you that it would rather strange to put a mesh inside but I know what I saw when I found the exploded view diagram.

For that reason only I wanted try and track down who might have made it or supplied it. Unfortunately the contractor cannot be contacted as the matter is 'sub judice'.

 

[Dotty]

Any way you can scan an post up the diagram you found?

Might give us a bit more to go on.

 

[Bob Swayne]

Like you I have never seen a low loss header with connections so close. Also, the only time I have seen a low loss header with so many connections is one where the boiler primary circuit had just two connections (flow & return) whereas the secondary side had 6 connections (3 - flow & 3 - return) serving one constant temp circuit, one serving a variable temp circuit and the third serving DHS primaries.

My reason for trying to identify the manufacturer is partially to obtain information about it for the O&M manual as well as assessing whether it is suitable for the system as currently installed, particularly bearing in mind the close proximity of the flow and return connections.

 

[Bob Swayne]

As I stated in one of my earlier replies unfortunately the diagram is no longer available having gone missing from the site.

 

[missplumb]

Mikrofill use box section on their lowloss headers. And look similar to that but all the ones I've seen are 1 in 2 out. I've also used a worcester one that was similar

 

[Nostrum]

Similar to this idea?

[DLMURL]http://www.mikrofill.com/uploads/images/news/mikrovent-montage.jpg[/DLMURL]

cant see the benefit, just looks like hassle waiting to happen.

 

[PriestyUK]

There is no way that will work so would think it would have been made to order. No drain cock or means of flushing it by the looks of it, you would even struggle just removing the whole thing to clean it. Why have they used a hex galv nipple and then used a female copper to iron? Maybe thats how you remove it by running a recip saw down the threads of the hex nipples lol. Do them 3 circuits feed u/f by any chance?

 

[IDCHAPPY]

I presume there is heating issues ?

 

[Ermintrude]

Drain, remove 1/2 vent and shove in camera.

 

[Ermintrude]

No mesh unless it's supposed to chase air up... But if they were that clever it would be three times as long only have two connections either side and have a doc.