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t h e p o w e r f a m i l y
3. 2. H e a ti n g -s i d e i ns tallat io n
The relevant laws, regulations and standards for ma-
chine room piping and for heat pump systems must
also be observed.
- It is essential that a dirt trap is fitted in the heating
return pipe.
- Safety devices and expansion devices for closed
heating systems according to EN 12828 must be
fitted.
- Pipe dimensions must conform to the required flow
volumes (see section technical data).
- The connection hoses supplied for the heat pump
flow and return, and for the HGL connection must
be installed. The connection hoses can be cut to
the required length, but not shorter than 60 cm.
In addition, the connection hoses must not be bent.
- Venting options should be fitted at the highest
points of the connection lines, and draining options
at the lowest points.
nlagenschema N_1.3-0-2-0-3-0
- To avoid heat loss connection lines should be insu-
ERRA HGL + Hygienik + Direktheizkreis
lated using suitable material.
OS
T
B32
B35
TERRA
M16
TERRA SW Complete HGL
Note: This is only a tentative suggestion for installing an IDM heat pump in the heating system. This suggestion replaces no
professional planning of an executing companie! On part of IDM-Energiesysteme can no warrenty be taken concerning the
(C) IDM ENERGIESYSTEME GMBH
RE
B61
FS
B51
T
T
T
B33
M73
B34
T
Mud separator
Hygienik
function of the whole system!
Montážní návod Terra SW
Oxygen diffusion
With plastic pipe underfloor heating or open heating
systems which are not diffusion-tight, corrosion may
occur on steel parts when using steel pipes, steel
radiators or storage tanks due to oxygen diffusion.
Corrosion products can be deposited in the condens-
er 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-
floor heating which is not diffusion-tight should be
avoided.
Heating water quality
Depending on the quality of the heating water, lime
TEK/TSUP--31/03/2011
scale may occur (adherent coating primarily con-
sisting of calcium carbonate) on heat exchanger
surfaces in particular, i.e. with a high proportion of
calcium hydrogen carbonate there is an increased
risk of lime scale forming.
For filling heating systems, very clear guidelines ap-
ply relating to the heating water quality. Specifically,
European standard EN 12 828, ÖNORM H 5195 and
in particular VDI Guideline no. 2034-1 must be obser-
ved and represent the current state of art.
HW
You must also check the pH value of the heating
water. It should be between 8 and 9.5.
M22
B42
T
B41
T
B1
CW
Heating side installation
In heat pumps with process reversal is
already compulsory to install a flow meter
on heating site now!
For brine machines, the flow meter must
be connect on the digital input "Error heat
source circuit" (see wiring diagram).
For groundwater machines, the flow
meter must be connected serial to the
groundwater flow meter.
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