Opening And Closing Covers; Connection On Heating Side - Dimplex LA 33TPR Montage- Und Gebrauchsanweisungen

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7.2 Opening and closing covers

Each covering panel is secured with two screws. The screw
holes are closed with plastic covers. These plastic covers must
be inserted in the relevant screw holes again once the covering
panels have been mounted again. If the plastic covers are not
inserted, the function of the plate insulation may be impeded
due to rain water entering! Once the screws have been loos-
ened, the covering panels can be tilted (top plates by approx.
20°, bottom plates by approx. 45°). The bottom facade plates
can then be pulled out of the skirt panel, the top facade plates,
which do not have to be removed for transport, can be hung out
of the cover plate. Rehang the top panels by gently pushing
them in an upwards direction.

7.3 Connection on heating side

The connection on the heating side must be carried out by
trained personnel using personal protective equipment. Refer
to the device information for the connection sizes.
A spanner must be used to firmly grip the transitions when con-
necting the heat pump. After the heat pump has been installed,
the ductwork must be sealed so that the connection is gas-
tight.
CAUTION!
Flush the heating system prior to connecting the heat pump.
Before connecting the heating water system to the heat pump,
the heating system must be flushed to remove any impurities,
residue from sealants etc. Any accumulation of deposits in the
liquefier may cause the heat pump to completely break down.
Once the heat pump has been connected to the heating sys-
tem, it must be filled, purged and pressure-tested.
CAUTION!
The leakproofness of the hydraulic circuit must be ensured
and checked regularly.
NOTE
The response pressure of the safety valve in the heat pump is
2.5 bar(g).
The following points must be observed when filling the system:
Untreated filling water and make-up water must be of

drinking water quality
(colourless, clear, free of sediments)
Filling water and make-up water must be pre-filtered (max.

pore size 5 µm).
Scale formation in domestic hot water heating systems cannot
be avoided, but in systems with flow temperatures below 60°C,
the problem can be disregarded. With high-temperature heat
EN-12
pumps and in particular with bivalent systems in the higher per-
formance range (heat pump + boiler combination), flow tem-
peratures of 60°C and more can be achieved. The following
standard values should therefore be adhered to with regard to
the filling and make-up water according to VDI 2035, sheet 1:
the total hardness values can be found in the table.
Overall heat
output in kW
< 50
50 - 200
200 - 600
> 600
1. This value lies outside the permissible value for heat exchangers in heat
pumps.
Fig. 7.1:Guideline values for filling and make-up water in accordance with
VDI 2035
For systems with an above-average specific system volume of
50 l/kW, VDI 2035 recommends the use of fully demineralised
water and a pH stabiliser to minimise the risk of corrosion in the
heat pump and heating system.
CAUTION!
With fully demineralised water, it is important to ensure that
the minimum permissible pH value of 7.5 (minimum
permissible value for copper) is complied with. Failure to
comply with this value can result in the heat pump being
destroyed.
Important!
The notes/settings in the instructions of the heat pump man-
ager must always be observed and carried out accordingly; not
doing so will lead to malfunctions. The maximum water outlet
temperature must not exceed 64°C and must be secured on
the system side so that, if the temperature is exceeded, all addi-
tional heat sources are switched off safely.
452166.66.14 · FD 0008
Specific system volume
Total
(VDI 2035) in l/kW
Alkaline earths in
< 20
mol/m³ and/or
mmol
Total hardness in dGH
2.0 16.8
2.0  11.2
1.5 8.4
1
< 0.02
< 0.11
www.glendimplex.de
LA 33TPR
20 < 50 50
11.2
8.4
1
< 0.11
1
< 0.11