Section 1: IntroductionPage 4
1.1 General
The Grant Aerona³ range consists of four compact, MCS approved,
monobloc, air-to-water, inverter driven, single-phase air source heat pumps
working with R32 refrigerant.
It is important that these installation and servicing instructions are followed to
ensure correct installation and operation. Failure to do so may result in poor
performance.
It is not within the scope of this manual to design the heating system or provide
any advice regarding the layout of the system or any of the controls required
for any individual heating system.
These instructions do not replace the installation or users manuals for any
additional components used in the design of your system e.g. cylinders,
motorised valves, programmers, solar thermal devices, buffers, etc.
These instructions must be left with the product for future
reference.
1.2 Main Components
Each model incorporates the following main components:
• DC inverter - this responds rapidly to changing conditions to provide
the necessary output to meet heating demands by varying the speed
and output of the compressor, fan and circulating pump. This reduces the
on/off times of the compressor, keeping the water temperature constant
during operation reducing the electricity consumption.
• Compressor - a high-efficiency DC twin-rotary compressor to provide
smooth performance and quiet operation.
• Plate heat exchanger (condenser) - the high-efficiency plate heat
exchanger is used to transfer heat to the heating system primary circuit.
• Fan - a high-efficiency DC fan motor is used for smooth and quiet
operation. A single fan is fitted to the 6kW (5 blade) and 10kW (3
blade) units. Two fans (3 blade) are fitted to the 13 & 17kW unit.
• Circulating pump - high-efficiency DC pump speed controlled from
the ASHP control PCB.
• Base tray heater - factory fitted electric heater prevents condensate
in the base of the heat pump from freezing. When the ambient
temperature reaches 2.5°C, the base tray heater turns on and at 5.5°C
turns off (ΔT of 3k). This cannot be adjusted or turned off. Refer to
Section 2.3.
• Pressure relief valve - a 3 bar pressure relief valve is factory fitted.
• Air purge valve (automatic air vent) - factory fitted to assist in the
removal of air from the heating primary circuit of the heat pump.
1.3 Planning Permission
The installation of a Grant Aerona³ heat pump on domestic premises may
be considered to be permitted development, not needing an application
for planning permission, provided ALL the limits and conditions listed on the
Planning Portal website are met.
For further information contact your local planning department.
1. 4 Important Advice
1. It is essential that the full layout of the system is understood before the
installation of any component is undertaken. If you are in any doubt,
please stop and seek advice from a qualified heating engineer or from
Grant IRL. Please note that Grant IRL will not be able to offer specific
advice about your system unless we designed it. In this case, we will
always refer you to seek the advice of a qualified system designer.
2. The heat pump must be installed and commissioned in accordance with
these installation and servicing instructions. Deviations of any kind will
invalidate the guarantee and may cause an unsafe situation to occur.
Please seek advice from Grant IRL if any of these user, installation and
servicing instructions cannot be followed for whatever reason.
3. The heat pump contains high pressures and high temperatures during
normal working conditions. Care must be taken when accessing the
internal workings of the heat pump.
4. The heat pump contains an electrically driven fan which rotates at high
speed. Disconnect the heat pump from the electrical supply before
removing the top cover.
1.5 Product Contents
The Aerona³ comes supplied on a single pallet. The following items are
included:
1.6 Installation Accessories
The following are available from Grant IRL:
Product code Description
HPIDFOOT/KIT2 Anti-vibration mounts (2 x 600mm and fixing kit)
HPIDINSU/KIT Through wall insulation kit (22 - 28mm flexible hoses)
1.7 Control Parameters
All parameters are listed sequentially in Appendix A.
1 INTRODUCTION
HPID6R32 HPID10R32 HPID13R32 HPID17R32
Aerona³ heat pump 6kW 1
Aerona³ heat pump 10kW 1
Aerona³ heat pump 13kW 1
Aerona³ heat pump 17kW 1
Condensate drain elbow 1 1 1 1
Anti-vibration shoes 4
¾” BSP x 22 mm flexible
hose c/w washer
2
1” BSP x 28 mm flexible
hose c/w washer
2 2 2
1” nipple 2 2
1” x 1¼” reducing socket 0 0 2 2
22 mm isolating valve 2
28 mm isolating valve 2 2 2
Remote controller 1 1 1 1
Remote controller cable
(length: 8 metres)
1 1 1 1
Installation and servicing
instructions
1 1 1 1
User instructions 1 1 1 1
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