- Messages
- 21
[FONT=&]Hello guys, my first post, so go easy on me haha [/FONT]
KEY INFO:
ABOUT ME: DIYer who doesn't know much about plumbing
BOILER: Potterton Combi 28 HE, installed 2012
PROPERTY: Ground floor mid-terrace flat approx. 80 sq m / 860 sq ft
TOTAL NUMBER OF NEW RADS: 9
[FONT=&]I'm self refurbing a ground floor flat in a mid-terrace property (built 1880). Renovation is extensive, stripped back to bricks / joists. [/FONT][FONT=&]After destroying it, I've began to build it back up.
I've taken accurate measurements of each room, inputted these into 3 different online BTU calculators and am repeatedly coming to a figure of 30,000 BTU, or so for the whole flat.[/FONT]
[FONT=&]The boiler is a Potterton Combi, rated at 28kW DHW / 26kW CH Pnc (condensing)...whatever that means. By my maths, 28kW = 95,000 BTU[/FONT]
[FONT=&]I have 2 questions:[/FONT]
[FONT=&](1) Is there any harm / negative effect in over speccing and get radiators equivalent to, say, 40,000 BTU in total, if not a little more (boiler has a max of 95kBTU, as mentioned)?[/FONT]
[FONT=&](2) I don't know whether my system is delta 50 or delta 60 as all the pipework has been ripped out, so I don't know what the inlet / outlet water temperatures would have been...what should I assume, as this has an effect on BTU values?
Thanks very much!
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[/FONT]
KEY INFO:
ABOUT ME: DIYer who doesn't know much about plumbing
BOILER: Potterton Combi 28 HE, installed 2012
PROPERTY: Ground floor mid-terrace flat approx. 80 sq m / 860 sq ft
TOTAL NUMBER OF NEW RADS: 9
[FONT=&]I'm self refurbing a ground floor flat in a mid-terrace property (built 1880). Renovation is extensive, stripped back to bricks / joists. [/FONT][FONT=&]After destroying it, I've began to build it back up.
I've taken accurate measurements of each room, inputted these into 3 different online BTU calculators and am repeatedly coming to a figure of 30,000 BTU, or so for the whole flat.[/FONT]
[FONT=&]The boiler is a Potterton Combi, rated at 28kW DHW / 26kW CH Pnc (condensing)...whatever that means. By my maths, 28kW = 95,000 BTU[/FONT]
[FONT=&]I have 2 questions:[/FONT]
[FONT=&](1) Is there any harm / negative effect in over speccing and get radiators equivalent to, say, 40,000 BTU in total, if not a little more (boiler has a max of 95kBTU, as mentioned)?[/FONT]
[FONT=&](2) I don't know whether my system is delta 50 or delta 60 as all the pipework has been ripped out, so I don't know what the inlet / outlet water temperatures would have been...what should I assume, as this has an effect on BTU values?
Thanks very much!
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