Assembly; General; Connection On Heating And Hot Water Side; Connection On Heat Source Side - Dimplex 452234.66.36 Montageanweisung

7
7

Assembly

7.1 General

The following connections need to be established on the heat
pump:
 supply/return flow of the brine system
 Flow / return of additional heat exchanger
 supply/return flow of the heating system
 power supply
 temperature sensor
7.2 Connection on heating and hot
water 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.
ATTENTION!
It is recommendet that the water circuit side be equipped with the flow
rate switch available as an option.
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
Use of the optionally available four-way reversing valve is recom-
mended. A detailed installation description can be found in the in-
structions included with the valve.
Note:
For operation of the heat pump with the four-way reversing valve,
it is essential to set up the hydraulic connections according to the
instructions included in the scope of supply of the valve. The in-
structions give a description of the precise procedure for the cor-
EN-6
Total
hardness in °dH

2.0 11.2

1.5 8.4
< 0.11
rect assembly of hydraulics. Non-observance of this will lead to
restrictions in the operation of the heat pump.
Important:
The notes/settings in the instructions of the heat pump manager
must always be observed and carried out accordingly; not doing
so will lead to malfunctions.
Heating water minimum flow rate
The minimum heating water flow rate through the heat pump
must be assured in all operating states of the heating sys-
tem. This can be accomplished, for example, by installing a dual
differential pressureless 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.
Frost protection for installations prone to frost
Provided the heat pump manager and heating circulating pumps
are ready for operation, the frost protection feature of the heat
pump manager is active. 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 installations where a power failure cannot be read-
ily 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.