ᐅ Specified supply temperature of the underfloor heating system not maintained
Created on: 24 Jul 2024 01:15
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mman182
Hello,
we have purchased a newly built terraced house, and part of the purchase agreement included a contract with a local heat supplier. The technical connection conditions attached to the contract specify that the supply temperature for the underfloor heating should be 35°C (95°F). We have now been informed that the builder was unable to meet these parameters, and the supply temperature for the underfloor heating is actually 42°C (108°F).
My question to you is: Can I hold them accountable for this?
Best regards, mman
we have purchased a newly built terraced house, and part of the purchase agreement included a contract with a local heat supplier. The technical connection conditions attached to the contract specify that the supply temperature for the underfloor heating should be 35°C (95°F). We have now been informed that the builder was unable to meet these parameters, and the supply temperature for the underfloor heating is actually 42°C (108°F).
My question to you is: Can I hold them accountable for this?
Best regards, mman
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nordanney24 Jul 2024 10:06Buchsbaum066 schrieb:
Which heat pump (HP)? District heating provider,Right, I answered too quickly. Buchsbaum066 schrieb:
If my supply temperature is 60 degrees and I turn my thermostat down to 2, then the radiator won’t get 60 degrees either.No, if the supply temperature is 60°C (140°F), the pipes will always carry 60°C (140°F). The thermostat does not reduce the temperature itself. You should look into how radiator thermostats actually work.B
Buchsbaum06624 Jul 2024 10:54If the supply temperature at the heating system is 60 degrees Celsius (140°F), the water in the pipes will no longer be 60 degrees due to heat loss but maybe only around 50 degrees Celsius (122°F).
Of course, this temperature is what the thermostat detects. This reduces the flow rate, and your radiator will only reach about 25 or 28 degrees Celsius (77 or 82°F).
At the district heating transfer station, the temperature is now 42 instead of 35 degrees Celsius (107.6 instead of 95°F). Why should that be a problem or concerning?
The heating inside the house can still be controlled, either with a thermostat or directly at the transfer station.
During winter, a higher supply temperature is applied and it’s not at the lowest limit. Having reserves is never a bad thing. I don’t see this causing extra energy consumption. Also, the heat meter measures flow rate rather than supply temperature. And I can reduce the flow if necessary.
Of course, this temperature is what the thermostat detects. This reduces the flow rate, and your radiator will only reach about 25 or 28 degrees Celsius (77 or 82°F).
At the district heating transfer station, the temperature is now 42 instead of 35 degrees Celsius (107.6 instead of 95°F). Why should that be a problem or concerning?
The heating inside the house can still be controlled, either with a thermostat or directly at the transfer station.
During winter, a higher supply temperature is applied and it’s not at the lowest limit. Having reserves is never a bad thing. I don’t see this causing extra energy consumption. Also, the heat meter measures flow rate rather than supply temperature. And I can reduce the flow if necessary.
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nordanney24 Jul 2024 11:00Buchsbaum066 schrieb:
If my supply temperature is 60°C (140°F) and I turn my thermostat down to 2, then no 60°C (140°F) water flows through the radiator. Buchsbaum066 schrieb:
If the supply temperature at the heater is 60°C (140°F), then due to pipe losses, you probably no longer have 60°C (140°F) in the pipes, but maybe only about 50°C (122°F). Just read your own words...
If the heating system is delivering 60°C (140°F) and the water is being pumped through the (insulated) pipes, then roughly 60°C (140°F) will reach the thermostats and flow into the radiator accordingly. It is undisputed that the water cools down as heat is transferred.
Buchsbaum066 schrieb:
Of course, the temperature is present at the thermostat. That reduces the flow rate, and your radiator is then only 25 or 28°C (77 or 82°F) warm. Just read the first quote again. Supply temperature 60°C (140°F), turning down the thermostat = cooler water flows through the radiator.
No, it is always 60°C (140°F) water (or at most about 58°C (136°F)) flowing into the radiator.
If you are making incorrect statements, don’t try to argue about how warm the radiator becomes. The thermostat regulates the flow rate of 60°C (140°F) hot water to achieve the desired room temperature.
In your next post, you will probably divert again, blaming the government with its building regulations that the thermostat simply cannot cool. Or you will confuse things with other nonsense. But what you wrote in post #5 is simply wrong. Nothing more, nothing less.
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