REMKO EFS 25 - Manual (Page 11)

4.2 Design of the storage tank
You can use the following table to calculate the approximate required volume of the buffer tank.
Temperature in buffer tank [°C] HW temperature [°C]
set in controller
Reqd. Storage tank volume per
litre of HW [Litre]
50 45 1.5
60
45 0.9
50 1.2
55 1.6
70
45 0.7
50 0.9
55 1.0
80
45 0.6
50 0.7
55 0.8
Sample calculation for the design of the buffer tank:
Temperature of buffer tank: 60 °C, required dispensing medium flow rate at water valve: 20 l/min
DHW temperature set on the controller: 45 °C
How large must the Storage tank be if a 20-minute dispensing operation is to take place without reheating?
20 l/min x 20 min = 400 l
400 l x 0,9 = 360 l ð The heated part of the buffer tank must be 360 litres in size.
The hot water volume depends on the position of the installed S 08 probe (Smart Control hot water
probe). The higher this is installed on the buffer tank, the lower the hot water volume.
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