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Post by blustnmtn on Sept 29, 2021 13:51:37 GMT
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Post by missouriboy on Sept 30, 2021 3:15:49 GMT
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Post by blustnmtn on Oct 7, 2021 13:41:25 GMT
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Post by missouriboy on Oct 10, 2021 1:11:41 GMT
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Post by acidohm on Oct 10, 2021 10:28:41 GMT
Sorry Blu, never saw this request! Yes it's correct. Heat source operates on lower flow temps so where a gas boiler pushes out central heating water at 75°c or so, heat source will be 55-60°c. It's not only the pipework tho, it's the radiators too. A properly designed system uses Hest loss calculations for each room which accounts for aspect, insulation, windows/sizes, how many external walls etc etc. This produces a value in btu and you instal radiators to provide that energy. It's all calculated for gas flow temps....the lower flow temp results in a larger radiator to reach the btu requirement. Worst case, there's 22mm (¾") pipework going to a manifold from which the 10mm routes around the house to each rad. This is an awful system which blocks over time. Haven't seen too much tho. When I install its 22mm reducing to 15mm (½") to 2 rads with 10mm the final 2-3m. This system would retro fit heat source with larger rads. The Contractor I sub too has done a few sites with air source over the years, speaking to contract managers, they get alot of unsatisfaction reports from customers.
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Post by acidohm on Oct 14, 2021 18:47:22 GMT
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Post by missouriboy on Oct 14, 2021 19:48:36 GMT
And we all know WHY it was leaked.
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Post by missouriboy on Oct 14, 2021 19:54:55 GMT
Sorry Blu, never saw this request! Yes it's correct. Heat source operates on lower flow temps so where a gas boiler pushes out central heating water at 75°c or so, heat source will be 55-60°c. It's not only the pipework tho, it's the radiators too. A properly designed system uses Hest loss calculations for each room which accounts for aspect, insulation, windows/sizes, how many external walls etc etc. This produces a value in btu and you instal radiators to provide that energy. It's all calculated for gas flow temps....the lower flow temp results in a larger radiator to reach the btu requirement. Worst case, there's 22mm (¾") pipework going to a manifold from which the 10mm routes around the house to each rad. This is an awful system which blocks over time. Haven't seen too much tho. When I install its 22mm reducing to 15mm (½") to 2 rads with 10mm the final 2-3m. This system would retro fit heat source with larger rads. The Contractor I sub too has done a few sites with air source over the years, speaking to contract managers, they get alot of unsatisfaction reports from customers. Most all of our space heating systems here in the Mid-USA are gas furnace - forced hot air via large ductwork. Many are combined with an outdoor heatpump for summer cooling and winter heating assist down to about 32 F.
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Post by missouriboy on Oct 16, 2021 0:52:39 GMT
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Post by missouriboy on Oct 20, 2021 3:27:46 GMT
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Post by blustnmtn on Oct 25, 2021 15:37:18 GMT
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Post by missouriboy on Oct 31, 2021 4:18:54 GMT
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Post by ratty on Oct 31, 2021 4:51:19 GMT
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Post by missouriboy on Nov 12, 2021 16:20:17 GMT
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Post by missouriboy on Dec 3, 2021 14:56:25 GMT
Congratulations Ratty. Australians have been pegged the heaviest drinkers in the world after consuming alcohol to the point of insobriety nearly twice as much as people elsewhere during 2020, an annual international survey of drug use has found. www.rt.com/news/542074-drunkest-country-in-world-survey/
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