Ufh 50 zones !!?

[on31ll]

Anybody know of a controller able to control 5 manifolds with 10 zones on each manifold


back story is its installed in a church 5 manifolds on the wall all fed off a domestic boiler. All manifolds fed in 22mm. The church left the heating on for 3 days solid and it moved up one degree !!!!!

 

[on31ll]

There isnt. Just maifolds and pumps on fused spurs

 

[Killy Bing]

...... Oh my...... That's awful....

You need to do the lot man.
Adding controls to the manifolds won't make any difference until the plant is sorted.

And that boiler will be ruined in no time with that flow firing though it.

Needs hydraulic separation desperately

 

[on31ll]

What im thinking is two boilers. Low loss header. Possibly linking out the zones to bring down the amount of zones abit.

But need to sort out controls for them too.

Maybe run 3 john guest set ups or somthing. Thats why i was thinking of using zone valves. On room stats.

 

[Killy Bing]

I'll draw you a diagram of how I would do it tomorrow sir

 

[on31ll]

Why thank you kind sir

 

[Ray Stafford]

At the risk of sounding rude, (not my intention at all, honestly!) this job has already been cocked up by someone who didn't have the requisite skills and experience to do it right.

I'm not sure that a bit of consultation on UKPF, however well intentioned, is going to correct that problem. With the greatest respect, the client deserves someone with a deeper level of experience of this type of install.

Sometimes, the greatest wisdom is having the self knowledge to say "I don't know".

 

[lame plumber]

Ray speaks the truth, got to say I like to walk away from anything more complicated than 4 beds and a lounge/diner. But I have seen a lot of awful installs by some who have a little knowledge, theres nothing worse than coming across an ufh system where the floors are to hot to walk on!!!!!!!!!!!!!!

 

[on31ll]

Ive fitted on alot bigger scale than this but i never had to spec a system to control 50 zones. My original question was about that. I asked advice to compare to what i have already thought.

If i come across like im asking people to do the work for me then its come across wrong. I do alot of churchs and alot have sabinana convectors combined with ufh but the zones are no where 50. Since im not ripping the floor up ive gotta work with whats there.

 

[Ray Stafford]

Ive fitted on alot bigger scale than this but i never had to spec a system to control 50 zones. My original question was about that. I asked advice to compare to what i have already thought.

If i come across like im asking people to do the work for me then its come across wrong. I do alot of churchs and alot have sabinana convectors combined with ufh but the zones are no where 50. Since im not ripping the floor up ive gotta work with whats there.

Fair enough. As I said, it was intended in a positive spirit.

 

[Nostrum]

If it's a church then you'll probably not need multi zone control as it will be a couple of huge spaces that require miles of pipe.

It's quite likely that the floor heating won't provide a sufficient amount of heat to match the losses in the winter anyway. Most underfloor can't achieve the type of outputs an old type church would require.

I would be preparing to offer a compromise as opposed to a solution before you accept any works on this one, the fundamentals could be all wrong.

 

[oz-plumber]

When you say the manifolds are fed off 22mm mains, are each manifolds mains taken back to the boiler location or are they al fed off the one set of 22mm mains?

Can you not provide a simple drawing of the installation?

 

[Gray0689]

Pictures please

 

[on31ll]

I havent been back to be able to take pics. Got a rep coming out as he said he has seen this exact install before and there was actuators etc.

There are 5 manifold and theses are mounted in what look like radiator covers in the main church. 2 on the left wall and 3 on the right wall. Directly opposite.

The 22mm leaves the boiler travels 10meters to the first manifold then into the second. Then goes right around the room to connect into the 3rd then 4th then 5th.

 

[Gray0689]

That is literally unbelievable that anyone would do that

 

[on31ll]

And get paid for it ! Shocking