Mounting; General Information; Connection On Heating Side; Connection On Heat Source Side - Dimplex SI 50TE Instructions D'installation Et D'utilisation

7

Mounting

7.1 General Information

The following connections need to be estab-lished on the heat
pump:
 supply/return flow of the brine system
 supply/return flow of the heating system
 power supply

7.2 Connection on Heating Side

ATTENTION!
The heating system must be flushed prior to connecting the heat pump.
Before completing the heat pump connections on the heating
water side, the heating installation must be flushed in order to re-
move any impurities that may be present, as well as residues of
sealing material, and the like. Any accumulation of deposits in
the condenser may result in a total failure of the heat pump.
Once the installation on the heating side has been completed,
the heating system must be filled, de-aerated and pressure-
tested.
Consideration must be given to the following when filling the sys-
tem:
 Untreated filling water and make-up water must be of drink-
ing water quality
(colourless, clear, free from sediments)
 Filling water and make-up water must be pre-filtered (pore
size max. 5µm).
Scale formation in hot water heating systems cannot be com-
pletely avoided, but in systems with flow temperatures below
60°C the problem can be disregarded.
With medium and high-temperature heat pumps, temperatures
above 60°C can be reached.
The following standard values should therefore be adhered to
concerning the filling water and make-up water (according to VDI
2035 Sheet 1):
Total alkaline earths
Total heat
in mol/m³ and/or
output in [kW]
mmol/l

up to 200

200 to 600
> 600 < 0.02
Heating water minimum flow rate
The heating water minimum flow rate through the heat pump
must be assured in all operating states of the heating system.
This can be accomplished, for example, by installing a dual dif-
ferential pressure-free manifold.
NOTE
The use of an overflow valve is only recommended for panel heating and
a max. heating water flow of 1.3 m³/h.
System faults may result if this is not observed.
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Total
hardness in dH

2.0 11.2

1.5 8.4
< 0.11
Frost protection for installations prone to frost
Provided the manager and heating circulating pumps are ready
for operation, the frost protection feature of the manager is ac-
tive. If the heat pump is taken out of service or in the event of a
power failure, the system has to be drained. In heat pump instal-
lations where a power failure cannot be readily detected (holiday
house), the heating circuit must contain a suitable antifreeze
product.
7.3 Connection on Heat Source
Side
The following procedure must be observed when making the
connection:
Connect the brine pipe to the heat source flow and return of the
heat pump.
The hydraulic plumbing diagram must be observed here.
ATTENTION!
The supplied strainer must be fitted in the heat source inlet of the heat
pump in order to protect the evaporator against the ingress of impurities.
ATTENTION!
It is recommended that the brine circuit side be equipped with the flow
rate switch available as an option.
In addition, a microbubble deaerator must be installed in the heat
source system.
The brine liquid must be produced prior to charging the system.
The brine concentration must be at least 25 %. Freeze protection
down to approx. -14 °C can thus be ensured.
Only antifreeze products on the basis of mono-ethylene glycol or
propylene glycol may be used.
The heat source system must be vented (de-aerated) and
checked for leaks.
ATTENTION!
The brine solution must contain at least 25 % of an antifreeze agent on a
mono-ethylene glycol or propylene glycol basis and must be mixed prior
to filling.
7.3
EN-5