Dimplex A Class Air Source Heat Pump User Manual
A Class Air Source Heat Pump
User Guide
I
MPORTANT
– T
HIS MANUAL MUST BE LEFT WITH THE USER AFTER INSTALLATION
8/60476/0
Issue 1.03
ii
Contents
1: Introduction 1
2: How the Heat Pump Works 1
2.1 Tips and advice to follow when using your new heat pump 1
3: Heating System Controller 2
4: Operating the User Interface 2
4.1 Temperature
2
4.2 Home Screen
3
4.3 Space Heating
3
4.3.1 Comfort Levels
4
4.3.2 Operating Modes
5
4.3.4 Setting Time Periods
5
4.4 Domestic Hot Water (DHW)
6
4.5 Information
7
4.5.1 Adjusting Time and Date
8
4.5.2 Information - Message List
8
4.5.3 Changing Outside Off Temperature
8
4.6 Temporary Modes
9
4.6.1 Going Out
9
4.6.2 Home Early
9
4.6.3 Holiday Mode
9
5: Safety 10
6: Defrost 10
7: Maintenance 10
1
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 2040% generated by the electricity used to power
the heat pump.
2.1 Tips and advice to follow when
using your new heat pump
• 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
2
3 Heating System Controller
(User Interface)
The controller/user interface that is supplied
with the Dimplex A-Class heat pump is used as
a heat pump controller as well as a heating and
domestic hot water (DHW) controller. It is also
the preferred option for use as a temperature
control device. The functions available for each
of these applications are explained in section 4.
When your heat pump system was installed, the
installer would have discussed with you the
different temperature control device options
available. While only one user interface is
currently available per system, there are
additional options of either temperature probes
or mechanical thermostats, which can be used
to control the temperature in up to four zones.
Mechanical thermostats provide less control
over the heating system, while the temperature
probe option allows the heat pump to sense
changes in demand and adjust accordingly. The
temperature probe option is generally
recommended over the mechanical thermostat
option.
A zone is defined as the physical area of your
home in which temperatures are controlled by
each individual device. For example, you might
have the user interface installed in your living
area, in which case this may be referred to as
zone 1. You may also install a temperature
probe upstairs in the sleeping/bedroom area,
which would then be designated as zone 2, and
so on. Extra zones are an additional, optional
feature of the heating system. The standard
package comes with one User Interface and the
possibility of four separate zones.
4 Operating the User Interface
• Select – click middle of dial (Enter/
Confirm)
• Change selected value – turn dial to
desired value
• Confirm change – click middle of dial
(Enter/Confirm)
• Back up one level – click small ’Esc’ button
(Escape)
4.1 Temperature
If the UI is not in use, the screen will switch to
screensaver mode after ten seconds, which
displays the current and set point temperature,
as shown in figure 3. When using a
mechanical thermosta t to cont rol
temperature in zone 1, the screensaver
feature will not be available. Turning the dial
left or right will decrease or increase the
temperature. Clicking the middle of the dial
confirms the new set point temperature for
zone 1.
Figure 3: Main User Interface (UI)
(Esc)
Temperature
Display
Screensaver
Figure 4(a): Increasing zone temperature
Figure 4(b): Decreasing zone temperature
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