Purpose Of The Heat Pump; Application; Principle Of Operation; Baseline Unit - Dimplex SIH 20TE Installation And Operating Instructions Manual

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. The mixture of water and frost protection
(brine) acts as a heat transfer medium in the heat source system.
Ground probes, ground heat collectors or similar systems can be
used as heat source systems.

2.2 Principle of Operation

The heat generated by the sun, wind and rain is stored in the
ground. This heat stored in the ground is collected at low temper-
ature by the brine circulating in the ground collector, ground coil
or similar device.
A circulating pump then conveys the warmed brine to the evapo-
rator of the heat pump. There, the heat is given off to the refrig-
erant in the refrigeration cycle. When so doing, the brine cools so
that it can again take up heat energy in the brine circuit.
The refrigerant is drawn in by the electrically driven compressor,
is compressed and "pumped" to a higher temperature level. The
electrical power needed to run the compressor is not lost in this
process, but most of the generated heat is transferred to the re-
frigerant.
Subsequently, the refrigerant is passed through the condenser
where it transfers its heat energy to the heating water. Based on
the thermostat setting, the heating water is thus heated to up to
70 °C.
www.dimplex.de
3

Baseline Unit

The basic device consists of a ready-to-use heat pump for indoor
installation, complete with sheet metal casing, control panel and
integrated heat pump manager. The refrigerant circuit is hermet-
ically sealed. It contains the Kyoto protocol approved refrigerant
R134a with a GWP value of 1300. 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 in the control box. A sensor for the external temperature
including mounting hardware as well as a strainer are supplied
with the heat pump. The supply for the load current and the con-
trol voltage must be installed by the customer.
The control wire of the brine pump (to be provided by the cus-
tomer) is to be connected to the control box. When so doing, a
motor protecting device is to be installed, if required.
The customer must provide both the heat source system and the
brine circuit manifold.
1) Control
2) Evaporator
3) Condenser
4) Compressor
5) Transport securing devices
6) Filter drier
452234.66.11 · FD 9411
SIH 20TE
EN-3