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2
Purpose of the Heat
Pump
2.1 Application
The brine-to-water heat pump is to be used exclusively for the
heating of heating water. It can be used in new or previously ex-
isting heating systems. A mixture of water and antifreeze (brine)
is used as the heat transfer medium in the heat source system.
Borehole heat exchangers, ground heat collectors or similar sys-
tems can be used as the heat source system.
2.2 Operating Principle
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 collector, ground
coil or similar device. 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 refrigerating 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 58 °C.
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3
Basic Device
The basic device consists of a ready-to-use heat pump for indoor
installation, complete with sheet metal casing, control panel and
integrated controller. The refrigerant circuit is hermetically
sealed. It contains the Kyoto protocol approved refrigerant
R407C with a GWP value of 1774. It is CFC-free, does not de-
plete ozone and is non-flammable.
All components required for the operation of the heat pump are
located on the control panel. An external wall temperature sensor
including fixing accessories and a dirt trap are supplied with the
heat pump. The supply for the load current and the control volt-
age must be installed by the customer.
The supply lead of the brine circulating pump (to be provided by
the customer) must be connected to the control panel. If re-
quired, the supply lead of the brine pump is be equipped with a
motor protection device.
The customer must provide both the heat source system and the
brine circuit manifold.
1)
Liquifier
2)
Control panel
3)
Evaporator
4)
Compressor
452232.66.13 · FD 9603
SI 5ME - SI 14ME
EN-3
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