Domestic Hot Water System - Gebwell Aries Series Installation And Commissioning Manual

Heating system with an external heating water
circulation pump and buffer tank
If the heating system requires an external water circulation
pump, the pump must be dimensioned to correspond to the
needs of the heating system. If the fluid volume of the
heating system is too low in relation to the power of the
heat pump, a heating buffer tank should be used in the
heating system.
Water-circulating post-heating of ventilation should be
connected with a buffer tank as well as an external heating
water circulation pump to ensure that heat is supplied to
the ventilation device.
Several heating systems
If there are heating systems in the building using different
temperatures, such as radiator heating and underfloor
heating, an additional heating circuit should be used. The
higher-temperature circuit should always be connected as
circuit 1 and the lower-temperature circuit should be
circuit 2.
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Connecting the installation set
Installation sets are available as accessories to make the
installation of the heat pump quicker and easier. Refer to
the connection instructions supplied with the installation
set.
6.3

Domestic hot water system

Before installing the heat pump, rinse the building's
domestic hot water pipe network to remove any impurities
that may remain after installation.
Install shut-off valves in pipe connections as close to the
heat pump as possible.
Water must not be allowed to drip on top of the heat pump
and the electrical equipment during operation.
The domestic hot water system should be equipped with a
safety valve (max. 10 bar) and it should be installed in the
inbound cold water pipe as shown in the diagram. It is
advisable to lead the safety valve overflow pipe to the
nearest floor drain. The overflow pipe should be installed
in such a way that water is able to flow out of the overflow
pipe unobstructed.
The domestic hot water safety valve may leak almost
constantly when domestic hot water is no longer
consumed in large volumes. The overflow is due to the
heat expansion of cold water and pressure shocks. The
safety valve can be prevented from leaking by installing
an expansion tank in the domestic hot water network to
level out pressure fluctuations and prevent pressure
shocks.
The heat pump's domestic hot water tank is equipped with
a domestic hot water circulation connection. The
circulation flow should be precisely regulated to ensure
that the tank functions. If the flow is too high, it will
reduce the temperature layering in the heat pump's
internal tank and weaken the operation of the system.
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