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10. Heating side installation
10. Heating side installation
heating side installation
The relevant laws, regulations and standards for ma-
chine room piping and for heat pump systems must
be observed.
- It is essential that a dirt trap is fi tted in the heating
return pipe.
- Safety devices and expansion devices for closed
heating systems according to EN 12828 must be
fi tted.
- Pipe dimensions must conform to the required fl ow
volumes (see section technical data).
- The supplied connecting hoses for heat pump fl ow
and return as well as for the HGL connection must
be installed. The connecting hoses can be shor-
tened to the desired length, but not shorter than 60
cm. Furthermore, the hoses must not be kinked!
- Venting options should be fi tted at the highest
points of the connection lines, and draining options
at the lowest points.
- To avoid heat loss, connection lines should be in-
sulated using suitable material.
In case an electrical heating element will
be installed in the thermal storage tank, an
additional safety device must be installed
at the thermal storage tank!
Incorrect fl ow rates due to incorrect piping,
incorrect valves and accessories or impro-
per pump operation can cause damages!
The system must only be connected to
the mains and put into operation if the
entire heating system has been fi lled
and bled, as otherwise the circulating
pumps may run dry.
44
Installation instructions AERO SLM
Oxygen diff usion
With plastic pipe underfl oor heating or open heating
systems which are not diff usion-tight, corrosion may
occur on steel parts when using steel pipes, steel
radiators or storage tanks due to oxygen diff usion.
Corrosion products can be deposited in the conden-
ser and may cause heating losses to the heat pump
or high-pressure faults.
For this reason, open heating systems or steel pipe
installations in combination with plastic pipe under-
fl oor heating which is not diff usion-tight should be
avoided.
Heating water quality
Depending on the quality of the heating water, lime
scale may occur (adherent coating primarily consis-
ting of calcium carbonate), i.e. with a high proportion
of calcium hydrogen carbonate there is an increased
risk of lime scale forming.
For fi lling heating systems, very clear guidelines ap-
ply relating to the heating water quality. Specifi cally,
European standard EN 12 828, ÖNORM H 5195 and
in particular VDI Guideline no. 2035 must be obser-
ved and represent the current state of the art.
Also the pH-value of the heating water must be che-
cked. It should be in a range between 8 and 9.5.
Maximum temperature limitation for underfl oor
heating circuits
For underfl oor heating circuits, an additional contact
thermostat must be installed and the corresponding
heating circuit pump supply must be connected in
series.
(C) IDM ENERGIESYSTEME GMBH
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