Dimplex A Class Air Source Heat Pump, User Manual

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1 Introduction
Thank you for choosing a Dimplex Heat Pump.
Dimplex A-Class is designed specifically to
maximise year-round heating system efficiency,
no matter the weather conditions. Its high
efficiency means lower running costs and a
faster payback for the homeowner.
2 How the heat pump works
The operation of the heat pump is shown in
figure 1 below. A heat pump works on the same
principle as a fridge using a refrigerant fluid
which boils at a low temperature. Free energy is
take from the air to boil the refrigerant in the
evaporator coil (1), changing it from a liquid to
a vapour. This low grade heat is upgraded by
the compressor (2) increasing its pressure, and
consequently its temperature, to a useful high
temperature. The heat is transferred to your
heating system by the condenser (3), where the
refrigerant becomes liquid once again. The
liquid refrigerant is then expanded using an
expansion valve to a low pressure fluid before
repeating the cycle. 60-80% of the heat
generated by the heat pump comes from the
free energy taken from the air, compared to 20-
40% generated by the electricity used to power
the heat pump.
2.1 Tips and advice to follow when
using your new heat pump
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Glen Dimplex heat pumps are designed
with efficiency in mind. As a result of
using our renewable technology rather
than combustion or fossil fuels, the hot
water used to heat your home is heated
gradually, which allows the system to only
use as much energy as is required.
Because of this however, it will be
necessary to set your new heating system
to heat water/rooms a little while before
you would have had to set a traditional oil
or gas heating system, in order to allow
ample time for the desired temperatures
to be achieved.
•
When using a Glen Dimplex heating
system, it is important to remember that
it is not possible to have the DHW and
space heating switched on at the same
time. If, for example, you require both hot
water and heating in the morning, it is
recommended to use the DHW function
first, followed by the space heating. The
insulation used on our cylinders ensures
that hot water will stay hot for as long as
possible, however it generally takes longer
to initially heat the DHW than for the
space heating to take effect.
When programming timer settings on the
UI, please check that the timer set for the
space heating and DHW do not overlap, as
the DHW function will automatically take
priority.
Figure 2: Inside the Heat Pump
Figure 1: Refrigeration Cycle