Hi, Ive just got the option of a free gassifying boiler (orlan super 25) thats been running on my dads large (gravity fed) house but was way under specced, hes opted fror a 50kw up burning wood waste boiler instead.
I want to put it in my unused greenhouse running 2 accumulators, max 800ltr each due to hieght restrictions.. one of the accumulators will have a dhw and solar coil.. as far as the dhw coil im only going to use it for running a seperate tap to fill my bath! The house is run on a closed system with a gas combi boiler. I need to run pipe underground for about 10' to get from greenhouse to house, whats the best way of combining these systems?
If i connect directly into the central heating system I can see pressurised thermal expansion being an issue.. would it be easier to run the heating off a dhw coil in the top of the second cylinder? then having the accumulators and boiler on their own open system? I want to keep costs down, but it obviously has to work! how many kw's can you get from a coil? If i run the whole thing pressurised is there a easy way to make an expansion vessel out of say a hot water cylinder?
as for connecting to the house system I was thinking of just using a small ch pump and plumbing in a bi-pass round the gas boiler with a non return valve..
I want to put it in my unused greenhouse running 2 accumulators, max 800ltr each due to hieght restrictions.. one of the accumulators will have a dhw and solar coil.. as far as the dhw coil im only going to use it for running a seperate tap to fill my bath! The house is run on a closed system with a gas combi boiler. I need to run pipe underground for about 10' to get from greenhouse to house, whats the best way of combining these systems?
If i connect directly into the central heating system I can see pressurised thermal expansion being an issue.. would it be easier to run the heating off a dhw coil in the top of the second cylinder? then having the accumulators and boiler on their own open system? I want to keep costs down, but it obviously has to work! how many kw's can you get from a coil? If i run the whole thing pressurised is there a easy way to make an expansion vessel out of say a hot water cylinder?
as for connecting to the house system I was thinking of just using a small ch pump and plumbing in a bi-pass round the gas boiler with a non return valve..