Hello, since July 13th, my heat pump has been in operation. Domestic hot water temperature is set to 46°C (115°F), setback temperature to 36°C (97°F), and hysteresis to 5K.
I am currently testing the hot water production. The day before yesterday, around 5 p.m., I heated the 200-liter (53-gallon) storage tank to 50°C (122°F). The next morning, the temperature had dropped to only 41.5°C (107°F), although only one person had showered so far. A 9-degree drop by 10 a.m. seems too much in my opinion. The circulation pump ran for 3 hours in the evening and 2 hours in the morning. What are your experiences?
Yesterday, I noticed the following in the WEM portal:
2nd Heating Circuit:
Bivalence temperature -5°C (23°F)
Bivalence temperature for domestic hot water 40°C (104°F). Variable output on timer, probably for the domestic hot water circulation pump.
I have never heard of a bivalence point for domestic hot water. What does this mean?
Best regards
I am currently testing the hot water production. The day before yesterday, around 5 p.m., I heated the 200-liter (53-gallon) storage tank to 50°C (122°F). The next morning, the temperature had dropped to only 41.5°C (107°F), although only one person had showered so far. A 9-degree drop by 10 a.m. seems too much in my opinion. The circulation pump ran for 3 hours in the evening and 2 hours in the morning. What are your experiences?
Yesterday, I noticed the following in the WEM portal:
2nd Heating Circuit:
Bivalence temperature -5°C (23°F)
Bivalence temperature for domestic hot water 40°C (104°F). Variable output on timer, probably for the domestic hot water circulation pump.
I have never heard of a bivalence point for domestic hot water. What does this mean?
Best regards
A
Alessandro1 Aug 2023 14:43The topic of legionella bacteria and germs in single-family homes fills entire forums. You can educate yourself and then decide which solution works best for you.
The fact is that a circulation system, with its associated losses, is an energy and cost drain.
The fact is that a circulation system, with its associated losses, is an energy and cost drain.
D
Daniel-Sp1 Aug 2023 23:38Hello
Standing water in a circulation line is still problematic. That is why the circulation pipe should be flushed once a day. Those few minutes do not result in any significant heat loss from the storage tank.
Regards
Standing water in a circulation line is still problematic. That is why the circulation pipe should be flushed once a day. Those few minutes do not result in any significant heat loss from the storage tank.
Regards