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5. The tank is leaking.
6. Non-existent or inadequate insulation on the hot water pipe.
7. Leaks on hot water conduction from the system to the taps of the house.
8. Blockage or breakage of the check valve that remains open.
9. The equipment receives shadow from some nearby obstruction.
Also must be considered:
Hot water consumption is higher than hot water production of the equipment
Weather conditions
Large water consumption overnight
The client did not understand how ues the electrical heater
The expectations that the client could have regarding the equipment's
benefits
Frost resistance
Frost resistance of the system depends on the concentration of pure Propilene
glycol. So, you might to check the instruction in product labels.
Glycol proportion
Temp. protection
Proportion higher than 50% is not allowed
Attention
The DHW output should be insulated with a thickness according to regu-
lations and UV protection in outer sections.
In frost risk areas is highly recommended to isolate the cold water pipe and
use plastic pipes.
It is important to pay attention to the input of the pipes in the house. It is
necessary to seal properly the entry and make a siphon with a hole to drain
the water driven.
The equipment structures are calculated taking into account current
legislation concerning structural safety and
UNE-EN 1991-1-4:2018.
It is established a resistance to wind loads up 0.9 kN/m² and to stand a
snow load up to 0.35 kN/m². It is compulsory to revise the historical values of
wind and snow loads in the area where the equipment is going to be located.
You can only install the equipment if the values are lower than indicated.
15%
5%
10%
-5ºC
-1.5ºC
-3ºC
20%
25%
30%
-8ºC
-11ºC
-15ºC
rules UNE-EN 1991-1-3:2018 y
25
35%
40%
45%
-18ºC
-23ºC
-28ºC
50%
-33ºC
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