Hi there,
Planning on creating a vented gravity loop going into a hot water cylinder.
The F&E tank is one of these:
http://www.polytank.co.uk/polyred.htm
It allows for a 22mm Feed and 22mm Expansion pipe to be fitted to the loop.
The hot water cylinder has a 28mm coil specifically for solid fuel appliances.
Now everywhere I read I come across 28mm minimum for horizontal runs and 22mm for vertical runs, which both the F&E and Cylinder seem to comply with.
The issue is this....
The fireplace we have only has 1/2" - 15mm outlets on them!
(Sorry for the foreign website, but its the only one I can find easily with the technical drawing of it. http://www.obchod-kominex.cz/krbova-vlozka-teplovodni-hakr-trade-zeus-301-v-16kw-3326_detail/ )
So in short all that is available are 2 15mm outlets at the top and 2 15mm inlets at the bottom, presumably created so you can cap one end off and plumb it in whatever way you wish.
The sectional area of a 28mm pipe is approx 540 mm² where as 15mm is approximately 135 mm²
Even if you were to use both top outlets for the output and both bottom inlets for the input you'd still only be at 270mm² before connecting back onto the 28mm.
Is this likely to cause a huge bottleneck in the system?
How would you plumb this, take the 28mm right up to the back boiler and reduce it down to 1/2" and screw it directly in, but only using one input and one output?
Or reduce down to 15mm and split it both ways to use all four connections?
Planning on creating a vented gravity loop going into a hot water cylinder.
The F&E tank is one of these:
http://www.polytank.co.uk/polyred.htm
It allows for a 22mm Feed and 22mm Expansion pipe to be fitted to the loop.
The hot water cylinder has a 28mm coil specifically for solid fuel appliances.
Now everywhere I read I come across 28mm minimum for horizontal runs and 22mm for vertical runs, which both the F&E and Cylinder seem to comply with.
The issue is this....
The fireplace we have only has 1/2" - 15mm outlets on them!
(Sorry for the foreign website, but its the only one I can find easily with the technical drawing of it. http://www.obchod-kominex.cz/krbova-vlozka-teplovodni-hakr-trade-zeus-301-v-16kw-3326_detail/ )
So in short all that is available are 2 15mm outlets at the top and 2 15mm inlets at the bottom, presumably created so you can cap one end off and plumb it in whatever way you wish.
The sectional area of a 28mm pipe is approx 540 mm² where as 15mm is approximately 135 mm²
Even if you were to use both top outlets for the output and both bottom inlets for the input you'd still only be at 270mm² before connecting back onto the 28mm.
Is this likely to cause a huge bottleneck in the system?
How would you plumb this, take the 28mm right up to the back boiler and reduce it down to 1/2" and screw it directly in, but only using one input and one output?
Or reduce down to 15mm and split it both ways to use all four connections?
