Hello everyone,
We have a buffer tank with a capacity of 150 liters (40 gallons) planned, and there will be a total of 3 showers in the building. I would like to be able to run at least 2 of them simultaneously with hot water.
All showers are Raindance overhead rain shower heads with a water flow of about 15 to 17 liters per minute (4 to 4.5 gallons per minute) of mixed water (1 x S300 and 2 x S120).
Hot water is generated by the Cerapurmodul 9000 i model GC9000iWM20/100S23 (maximum nominal heat output for hot water is 30 kW). According to the manufacturer, it should produce up to 15 liters (4 gallons) of hot water per minute.
This all sounds plausible to me. However, since I don’t want to regret it later, it would be great if someone with practical experience could share whether the water actually stays warm when using the showers simultaneously.
We have a buffer tank with a capacity of 150 liters (40 gallons) planned, and there will be a total of 3 showers in the building. I would like to be able to run at least 2 of them simultaneously with hot water.
All showers are Raindance overhead rain shower heads with a water flow of about 15 to 17 liters per minute (4 to 4.5 gallons per minute) of mixed water (1 x S300 and 2 x S120).
Hot water is generated by the Cerapurmodul 9000 i model GC9000iWM20/100S23 (maximum nominal heat output for hot water is 30 kW). According to the manufacturer, it should produce up to 15 liters (4 gallons) of hot water per minute.
This all sounds plausible to me. However, since I don’t want to regret it later, it would be great if someone with practical experience could share whether the water actually stays warm when using the showers simultaneously.
T
toxicmolotof16 May 2016 12:16Why should the result differ in practice from the previous calculation if the given parameters are followed?
Unless, instead of 15 liters per minute (4 gallons per minute), only 10 liters per minute (2.6 gallons per minute) can be produced, or the showerhead suddenly uses 26 liters per minute (7 gallons per minute) instead of 17 liters per minute (4.5 gallons per minute).
Neither the calculation expert nor the practitioner can influence this.
Unless, instead of 15 liters per minute (4 gallons per minute), only 10 liters per minute (2.6 gallons per minute) can be produced, or the showerhead suddenly uses 26 liters per minute (7 gallons per minute) instead of 17 liters per minute (4.5 gallons per minute).
Neither the calculation expert nor the practitioner can influence this.
The CerapurModul 9000i comes with either a 150 or 210-liter buffer tank (40 or 55 gallons) – not 300. Furthermore, the question is how the tank is charged. For example, if you also use solar thermal energy, it might be that only the lower part is charged by solar thermal, meaning: in winter, you effectively have only half the storage capacity.
What does the installer say about this issue?
Good luck
K1300S
What does the installer say about this issue?
Good luck
K1300S
K1300S schrieb:
The CerapurModul 9000i comes with either a 150 or 210-liter buffer tank, not 300. Furthermore, the question is how the tank is charged. For example, if solar thermal is also used, the lower part might only be charged by solar thermal, meaning that in winter you have only half the storage capacity available.
What does the installer say about this issue?
Good luck
K1300S The installer says that according to the manufacturer’s statement, this should be sufficient and that a larger buffer tank is not possible with this model. That’s why I’m asking about practical experience. Is the 210-liter buffer tank only available in combination with solar thermal, or could it still be helpful for me? I do not have a solar thermal system planned.
Yes, it seems that the 210-liter (55 gallons) option necessarily involves using solar. Since you have not planned for that, it will probably stay with the 150 liters (40 gallons). From my experience with a 160-liter (42 gallons) storage tank and only one shower, it can already get tight if someone takes a long shower. Therefore, I assume that 150 liters (40 gallons) with two showers will be even more limited.
Good luck
K1300S
Good luck
K1300S
S
Sebastian7917 May 2016 13:08We have 400 liters (105 gallons) for 3 showers and a bathtub – especially with a heat pump, I would prefer to be on the safe side.
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