Installation of heat pump and domestic hot water tank
21.11.2015
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Z20469
Copyright
2013 by: WATERKOTTE GmbH. Subject to changes.
8.5.2
Heat pump with underfloor heating
The use of steel pipes and other steel components is not permitted in the
heating circuit of underfloor heating systems. Use stainless steel, copper,
brass or plastic - such as PE - for instance.
In case of single room control, a buffer tank (corrosion-free) and a differential
pressure overflow valve must be installed in the heating system (see dia-
grams). 200 litre buffer tank (enamelled or stainless steel) should be sufficient
for this series.
When the living space controlled by single room control is less than 1/3, a
buffer tank is not required if the remaining 2/3 floor circuits remain open.
8.5.3
Heat pump with radiators (natural cooling not possible)
On systems with steel radiators an effective corrosion inhibitor must be added
and a dirt trap (0.8 mm mesh) connected before entry into the unit. The sys-
tem must then be marked accordingly and the maintenance instructions of the
supplier must be followed strictly.
Heating systems with radiators require the installation of a buffer tank (con-
nected in parallel) (see diagrams). The size of the tank must be calculated. The
heat pump control regulates the temperature of the buffer tank. After the tank,
the components (circulation pump, mixing valve ...) must be controlled with an
optional WATERKOTTE mixing control.
If the formation of deposits is to be expected (e.g. strong contamination)
based on water quality, cleaning must be performed in regular intervals.
Cleaning can be performed by flushing.
Procedure:
The plate heat exchanger is to be flushed with a suitable cleaning agent in
counter-flow direction. If chemicals are used for cleaning, please ensure that
they are compatible to stainless steel, copper or nickel. Failure to comply can
result in destruction of plate heat exchanger!
8.5.4
Heat pump with swimming pool
(to operate with additional electrical module)
The following components are required for heating a swimming pool:)
1x 3-way motor ball valve (F10454)
1 x swimming pool sensor with immersion sleeve (Z14783 and Z13344)
swimming pool upgrade kit:
- P11108 only pool
- P1159 pool, mixer and solar)
