Assembly; General; Connection On Heating And Hot Water Side; Connection On Heat Source Side - Dimplex SI 130TUR+ Installation And Operating Instructions Manual

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
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 recommended that the water circuit side be equipped with the flow
rate switch included.
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-
rect assembly of hydraulics. Non-observance of this will lead to
restrictions in the operation of the heat pump.
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Total
hardness in dH
≤
2.0 11.2
≤
1.5 8.4
< 0.11
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 heating water minimum flow rate through the heat pump
(see "Device Information" on page 8.) must be assured in all op-
erating states of the heating system. This can be accomplished,
for example, by installing a differential pressure-free manifold.
Frost protection for installations prone to frost
Provided the controller and heating circulating pumps are ready
for operation, the frost protection feature of the controller 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 line to the flow and return pipe 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
E-5