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zaubermaus8415 Apr 2020 20:25Hello everyone, maybe you can help us. We have received our screed, which we ventilated continuously for over three weeks. Now we have received a device for substrate and functional heating. Our heating installer told us that our heating system only goes up to 35°C (95°F). The device ran for a few days trying to reach 55°C (131°F), but it only managed to reach about 40°C (104°F). How is it supposed to reach 55°C (131°F) if the internal heating cannot heat beyond 35°C (95°F)? Do we need a portable device that we move from room to room repeatedly? Thanks for the help.
You should actually ask all these questions to your heating installer, since you are buying a house and paying for the proper execution of the work.
Depending on the type of screed, there are regulations on how it should be heated up and cooled down. In other words, arbitrary temperature fluctuations are counterproductive.
For example:
Depending on the type of screed, there are regulations on how it should be heated up and cooled down. In other words, arbitrary temperature fluctuations are counterproductive.
For example:
I would send the heating technician back to trade school... When he mentioned a max supply temperature of 35°C (95°F), he probably meant that in the context of it being a heat pump system.
However, 99.99% of all heat pumps have an electric heating element specifically to reach higher temperatures than 35°C (95°F) when the ambient energy is not sufficient.
Otherwise, hot water production would be impossible, as it usually needs to reach temperatures higher than 35°C (95°F).
Overall, I would watch the heating technician very closely; he doesn’t seem to have much knowledge about what he is installing.
Otherwise, he wouldn’t have brought a mobile electric heater that raises the supply temperature to 55°C (131°F).
In our case, the heating was done entirely by the heat pump’s internal heating element because temperature fluctuations are generally unwanted during heating-up.
Some manufacturers only allow heating up via the heat pump if it can be guaranteed that the outside temperature will not fall below, for example, 0°C (32°F).
But test him and ask how the system is supposed to heat domestic hot water to 55°C–60°C (131°F–140°F) to prevent Legionella when the maximum supply temperature is supposedly only 35°C (95°F).
However, 99.99% of all heat pumps have an electric heating element specifically to reach higher temperatures than 35°C (95°F) when the ambient energy is not sufficient.
Otherwise, hot water production would be impossible, as it usually needs to reach temperatures higher than 35°C (95°F).
Overall, I would watch the heating technician very closely; he doesn’t seem to have much knowledge about what he is installing.
Otherwise, he wouldn’t have brought a mobile electric heater that raises the supply temperature to 55°C (131°F).
In our case, the heating was done entirely by the heat pump’s internal heating element because temperature fluctuations are generally unwanted during heating-up.
Some manufacturers only allow heating up via the heat pump if it can be guaranteed that the outside temperature will not fall below, for example, 0°C (32°F).
But test him and ask how the system is supposed to heat domestic hot water to 55°C–60°C (131°F–140°F) to prevent Legionella when the maximum supply temperature is supposedly only 35°C (95°F).
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zaubermaus8415 Apr 2020 21:34This device is already installed on the underfloor heating system. As shown in the diagram above, the program is also recorded, but it does not reach 55 degrees Celsius (131°F). He also mentioned that a heating element in the device is broken. Additionally, the kWh had to be reduced to 18 throttled instead of 32 kWh because the temporary power supply box—or we—cannot get more; a special permit from the utility company is required for that.
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