ecoGEO C Installation and User Manual (Version 1.0)
page 41
5.5
DHW circuit connection
To connect the DHW circuit piping, take into account the note in
Figure 5.3
and the following
recommendations.
•
To facilitate future maintenance work on the heat pump, install shut-off valves in the mains water inlet
and DHW outlet
•
Install a check valve at the cold water inlet to avoid hot water returning from the accumulator to the
main network.
•
Install a safety valve (8 bar) at the inlet of the water mains to prevent excessive pressure in the DHW
tank.
•
Because of the legionella protection (see section 3.2) water temperature in the DHW tank can reach
70°C. If the DHW installation in the dwelling does not have thermostatic taps we recommend fitting a
thermostatic mixing valve on the DHW outlet to avoid risk of scalding.
•
If the maximum system pressure can exceed 5 bar, we recommend installing a pressure reducing valve
in the mains input to prevent overpressure in the tank.
•
Thermally insulate the DHW outlet pipes to prevent unnecessary heat loss.
NOTE
Bear in mind that the mains water pressure is reduced during periods of high water consumption.
Check that under these conditions the minimum operating pressure of the installation is ensured.
Make sure the pipe connections are not subject to stress as leaks may occur.
Thermally insulate the DHW pipes to prevent unnecessary heat loss.
DANGER!
Do not install components that may clog the inlet or outlet of the safety valve of the DHW tank.
There may be risk of breaking the tank and causing injury, damage to property or both.
The DHW tank can reach temperatures of 70°C due to the anti-legionellosis protection, so scalding
injuries can occur.
When installing the DHW circuit, special care must be taken to avoid getting water on the electrical
panel. This could result in personal injury from electrical shock and cause equipment malfunction or
both.
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