Please Read Immediately; Important Information; Legal Regulations And Directives; Energy-Efficient Use Of The Heat Pump - Dimplex SI 8 MR Installation And Operating Instructions Manual

1
1 Please read
immediately

1.1 Important information

ATTENTION!
The heat pump is not secured to the wooden pallet.
ATTENTION!
The heat pump must not be tilted more than 45° (in any direction).
ATTENTION!
Do not use the holes in the panel assemblies for lifting the device!
ATTENTION!
Flush the heating system prior to connecting the heat pump.
ATTENTION!
In the case of large-volume heating circuits, use an additional expansion
vessel to supplement the installed expansion vessel.
ATTENTION!
Insert a dirt trap in the heat source inlet of the heat pump to protect the
evaporator against the ingress of impurities.
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.
ATTENTION!
When there is danger of frost, the circulating pump will also start
immediately in standby mode after connecting the power supply.
ATTENTION!
To prevent the accumulation of deposits (e.g. rust) we recommend using
a suitable corrosion protection system.
ATTENTION!
Any work on the heat pump may only be performed by authorised and
qualified after-sales service technicians.
ATTENTION!
Disconnect all electrical circuits from the power source prior to opening
the device.
1.2 Legal Regulations and
Directives
This heat pump conforms to all relevant DIN/VDE regulations
and EU directives. Refer to the EC Declaration of Conformity in
the appendix for details.
The heat pump must be connected to the power supply in com-
pliance with all relevant VDE, EN and IEC standards. Any further
connection requirements stipulated by local utility companies
must also be observed.
The heat pump is to be connected to the heat source system and
the heating or cooling system in accordance with all applicable
regulations.
E-2
1.3 Energy-Efficient Use of the
Heat Pump
By operating this heat pump you are helping to protect our envi-
ronment. The heating or cooling system and the heat source
must be properly designed and dimensioned to ensure efficient
operation. It is particularly important to keep water flow tempera-
tures as low as possible in heating operation. All connected en-
ergy consumers should therefore be suitable for low flow temper-
atures. Raising the heating water temperature by 1 K
corresponds to an increase in energy consumption of approx.
2.5 %. Low-temperature heating systems with flow temperatures
between 30 °C and 50 °C are optimally suited for energy-efficient
operation.
2 Purpose of the Heat
Pump

2.1 Application

The brine-to-water heat pump is designed for use in existing or
newly built heating systems. Brine is used as the heat transfer
medium in the heat source system. Borehole heat exchangers,
ground heat collectors or similar systems can be used as the
heat source.

2.2 Operating Principle

Heating
The heat generated by the sun, wind and rain is stored in the
ground. This heat stored in the ground is collected at a low tem-
perature by the brine circulating in the ground heat collector, the
borehole heat exchanger or a similar system. A circulating pump
then conveys the "heated" brine to the evaporator of the heat
pump. There the heat is given off to the refrigerant in the refriger-
ating cycle. This cools the brine so that it can once again absorb
thermal energy in the brine circuit.
The refrigerant is drawn in by the electrically driven compressor,
compressed and "pumped" to a higher temperature level. The
electrical power needed to run the compressor is not lost in this
process. Most of it is absorbed by the refrigerant.
Subsequently, the refrigerant is passed through the condenser
where it transfers its heat energy to the heating water. Depend-
ing on the set operating point (thermostat setting), the heating
water is thus heated up to a max. of 60 °C.
Cooling
The functions of the evaporator and the liquifier are reversed in
the "Cooling" operating mode.
The heating water gives up its heat to the refrigerant via the liqui-
fier which is now functioning as an evaporator. The refrigerant is
pumped to a higher temperature level using the compressor.
Heat passes into the brine via the liquifier (evaporator in heating
operation) and consequently into the ground.