Hi,
Have tried down rating at quite a few different kws. Currently at 12kw but no help.
It’s a polypipe manifold and have spoken to them but no help.
Hot zone valves at each manifold. 1 bypass internal to boiler and additional bypass near to boiler.
Will try and attach some pics on laptop...
hi,
Ok so have a 4 bedroom house.
Vaillant System boiler 637
No rads just underfloor heating. 3 x manifolds and nothing too big.
UV hot water tank.
Client complained that UFH has never worked properly.
I found system to be surprisingly dirty. Pumps knackered.
I replaced all manifold...
Went to apartments with this set up. It's got an 18l expansion vessel. To pipes out the top. 2 central immersions going into the fuse board on the front. A pipe coming out midway with a grunfoss pump then goes back into cylinder. 1 pipe with pump(central heating) going into it.
There's a 2...
went to job with this system. Looks antiquated to me and seems to be scaled up judging by symptoms. Not familiar with this entirely. Its a block of flats with cylinder coil fed by central boiler in complex i assume. Looking at replacing with megaflow, pulsacoil etc but can anyone help me...
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