I have just bought with my partner a huge old georgeon house and I am coming to the stage of needing to source a boiler.
The house is 6 bedroom with tall ceilings and single pain glass which I cant afford to replace for the moment. It also has a cellar which needs heating. Cavity wall insulation and will have the recommended wall and floor insulation
I have calculated that I need 32Kw of heat to heat all rooms (i.e the sum of the heat rejection needed for each room). But this doesn't include and heat loss through pipes. Of which there will be 2 runs of at least 15m to the last radiator on top and bottom floor from the boiler. So I am thinking I will need something like 35 Kw total.
Ideally we would like a combination boiler capable of this output but I cant find any, even those stating 40Kw output seem to be 40Kw of peak hot water output and approx 28 Kw CH output. We use power showers and have no need for a huge amount of stored water hence looking for combination boilers.
So my option as I see it are 2 pipe system:-
1. To ask on here if anyone can recommend a combination boiler capable of 34Kw CH output.
2. Use 2 smaller 30 Kw boilers which could be used in two different ways (we have plenty of room for them)
i. Split system top and bottom floor
ii. Twined together to feed both top and bottom floors.
I prefer option 2ii as it has several advantages (in my mechanical engineer head), 1 the whole system could still operate at 50% capacity if one of the boilers were turned off or failed (which seems to happen often with my experience so far of combination boiler with Pro instal). The plumbing would be simpler, I think the waterflow would also be higher. The hot water could also be run just from one of the boilers as we dont have a high demand so that CH output from both boilers is not interrupted by the need for hot water.
I have asked advice from a local plumber but I an not convinced he is right hence my question on here.
I will be plumbing it myself so any advise/ critism is welcome.
3rd question. Will the gas flow through the meter be sufficient to allow two boilers to start together of is this something else that will need looking at?
The house is 6 bedroom with tall ceilings and single pain glass which I cant afford to replace for the moment. It also has a cellar which needs heating. Cavity wall insulation and will have the recommended wall and floor insulation
I have calculated that I need 32Kw of heat to heat all rooms (i.e the sum of the heat rejection needed for each room). But this doesn't include and heat loss through pipes. Of which there will be 2 runs of at least 15m to the last radiator on top and bottom floor from the boiler. So I am thinking I will need something like 35 Kw total.
Ideally we would like a combination boiler capable of this output but I cant find any, even those stating 40Kw output seem to be 40Kw of peak hot water output and approx 28 Kw CH output. We use power showers and have no need for a huge amount of stored water hence looking for combination boilers.
So my option as I see it are 2 pipe system:-
1. To ask on here if anyone can recommend a combination boiler capable of 34Kw CH output.
2. Use 2 smaller 30 Kw boilers which could be used in two different ways (we have plenty of room for them)
i. Split system top and bottom floor
ii. Twined together to feed both top and bottom floors.
I prefer option 2ii as it has several advantages (in my mechanical engineer head), 1 the whole system could still operate at 50% capacity if one of the boilers were turned off or failed (which seems to happen often with my experience so far of combination boiler with Pro instal). The plumbing would be simpler, I think the waterflow would also be higher. The hot water could also be run just from one of the boilers as we dont have a high demand so that CH output from both boilers is not interrupted by the need for hot water.
I have asked advice from a local plumber but I an not convinced he is right hence my question on here.
I will be plumbing it myself so any advise/ critism is welcome.
3rd question. Will the gas flow through the meter be sufficient to allow two boilers to start together of is this something else that will need looking at?