Grant UK ASHP Range Brochure - March 2013

Grant Aerona Air Source
Heat Pump range
Air to water heat pumps with outputs from 6.5kW to 21.5kW
Two ranges available • High COP’s • MCS approved models • Built-in 3kW electric immersion • High quality powder coated paint finish
Simple plumbing and electrical connections • Compact design with common footprint for all units • All models are single phase
Factory fitted weather compensator with dual temperature control

Grant profile
At Grant we have been designing and
manufacturing reliable and easy to install heating
products for over 35 years. From award winning
oil-fired condensing boilers to the latest renewable
technologies, our heating systems have a reputation
for quality that is second to none.
We combine precision engineering, innovation,
performance and value for money to produce
sustainable heating solutions that are trusted
by both installers and householders.
Quality design
There is never a compromise on
quality. We design all of our products
so that you can be sure that the durability
and efficiency are sector leading. We
continually develop new technologies
and use only the best materials to ensure
our products meet all performance and
environmental standards.
Our belief in simple solutions
ensures that, while our technology is
sophisticated, our products are low
maintenance and easy to install. For
a high quality, reliable and sustainable
heating system, trust in Grant.
Heating responsibly
Grant manufacture heating products that
respond to the challenges of rising fuel
costs whilst protecting our environment.
Environmental responsibility is central
to all we do and we continue to develop
and innovate to produce even more
efficient products that make best use of
our natural resources.
We are passionate about developing
sustainable, high-performance and
affordable alternatives for heating
homes into the future.
Our guarantee
The Grant label is a guarantee of
reliability, quality and value. We put our
customers first and our independence
ensures that we can monitor our
standards and processes to deliver
the very best quality and service.
That’s why, when you order your system
from a Grant stockist, you can be sure
of a tailored service and excellent
aftersales support.
02

Heat pump technology
Air source heat pumps
Air source heat pumps use basic thermodynamic
principles to convert latent heat contained within
the air we breathe into heat energy that can be
used to provide heating and hot water.
This ‘ambient heat’ is replenished by the sun making our heat
pumps both effective and environmentally friendly.
Fit for the future
With the recent fluctuations in price and supply of fossil fuels,
air source heat pumps offer both an environmentally and
economically sustainable alternative.
Home heating in the UK accounts for approximately 30% of CO2
emissions. The heat source used by Grant Aerona heat pumps
is entirely renewable which helps reduce the amount of harmful
greenhouse gases being released into the atmosphere and, in
so doing, lowers the carbon footprint of the household.
How it works
There are two basic types of air source heat pump - ‘air to air’
and ‘air to water’. Grant Aerona heat pumps use an air to water
system which utilises heat energy captured from the air in 'wet'
heating system radiators or underfloor heating.
The process uses the same vapour/compression cycle that
extracts heat in a domestic fridge. A refrigerant with a low
boiling point is exposed to external air temperatures in an
evaporator. The liquid boils off to a gas and absorbs the latent
heat energy of the air. This gas is then compressed increasing
the heat content in the refrigerant, before passing through a
heat exchanger where it condenses back to a liquid state while
transferring the heat to the water of the heating system. The
liquid refrigerant is then re-circulated through the evaporator and
the cycle is repeated.
01380 736920 | www.grantuk.com
03

Heat pump installation
Typical system layout
The house below shows a Grant Aerona
incorporated into a standard heating system,
comprising heat pump, cylinder, underfloor
heating and radiator circuit.
Grant Solar Thermal is also a good match for air source heat
pumps and when combined using one of Grant’s high efficiency
heat pump cylinders and solar thermal system, can reduce
home heating bills even further.
Grant Solar Thermal
Collectors (optional)
Grant Aerona air to
water heat pump
Grant DuoWave Twin-coil
Heat Pump cylinder
04

Green savings
Lower heating costs
Compared with other domestic heating methods, a
Grant Aerona heat pump can benefit homeowners
by creating annual savings on fuel bills.
The units can deliver around four times the amount of energy for
every 1kW of electricity used (depending on the model, at 7°C
air temperature/35°C water temperature).
Homes utilising this type of heat generator will obviously have a
lower dependency on fossil fuels, making them less susceptible
to rising fuel costs.
About ‘Coefficient of Performance’ (COP)
The COP is the ratio of electrical power required to run the heat
pump, compared with the output being produced to heat the
water of the heating system.
Testing is carried out to European and British Standard BSEN14511
and establishes the output and COP at a specific ambient air and
circuit water temperature. This is 7°C for ambient air and 35°C for
water flow temperature. For example, the Grant Aerona ASHE65
model produces 6.5kW at a COP of 4.1, when tested to this level.
This means for every kilowatt (kW) of energy used to run the Aerona,
4.1kW of energy is being given to the heating system in return.
It is important to note that as the outside air gets colder, the output
and COP of an air source heat pump falls, due to the reduced
amount of heat energy available from the air. Conversely, when
outside air temperature rises above 7°C the output and COP will
increase (see performance graphs on pages 7 and 9).
Comparison of CO2 emissions for domestic home heating
0.4kg
Estimated CO2 released per kWh
0.3kg
0.2kg
0.1kg
Electricity LPG Oil
(Condensing)
Gas
(Condensing)
ASHP (COP 3.0)
Renewable
technology
ASHP (COP 3.5)
Renewable
technology
ASHP (COP 4.0)
Renewable
technology
Comparison of kWh costs for domestic home heating
£0.14
Estimated cost per kWh used
£0.12
£0.10
£0.08
£0.06
£0.04
£0.02
Electricity LPG Oil
(Condensing)
Gas
(Condensing)
ASHP (COP 3.0)
Renewable
technology
ASHP (COP 3.5)
Renewable
technology
ASHP (COP 4.0)
Renewable
technology
01380 736920 | www.grantuk.com
05

Grant Aerona range
The Aerona
Our original range of single phase air to water
heat pumps, feature weather compensation, dual
temperature controls and a 3kW immersion backup.
The integration of weather compensation with these controls
allows the unit to perform very efficiently, giving a reliable heat
output and using less power, resulting in lower running costs.
The design also makes installation straightforward into either
a new or existing S-plan type system configuration.
The Aerona is available in outputs of 6.5kW, 8.5kW, 11kW and
13kW (Note: this output does not include the immersion back up).
Design
Grant has combined tried and tested technology with
sophisticated control equipment to give customers the benefit
of efficient and reliable renewable heating with every Aerona air
source heat pump.
The performance of a heat pump is affected by outside air
temperature. Grant’s factory fitted weather compensating device
enables Aerona heat pumps to accurately monitor outside
temperature conditions and precisely control its operation,
maximising efficiency.
The units are pre-plumbed and pre-wired with an independent
heating element that automatically provides a boost on the
rare occasion when the air temperature falls to very low levels.
It is also possible to incorporate and control a secondary heat
source with this arrangement e.g. gas, oil-fired, biomass boiler
(Bivalent system).
The Grant Aerona is very compact, requires no additional
storage space for fuel and being sited externally, leaves more
valuable space inside the home. The units come complete
with a galvanised steel casing, featuring a proven high quality
external powder coated paint finish, which protects the internal
components and case from weathering.
Technical specifications
Model HPAW65 HPAW85 HPAW110 HPAW130
Height (mm) 820 1065 1165 1165
Width (mm) 1120 1120 1120 1120
Depth (mm) 430 430 430 430
Weight (kg)
Empty
Full
100
111
119
134
139
156
144
170
Water proof level IPX4 IPX4 IPX4 IPX4
Refrigerant R407C R407C R407C R407C
Operating voltage (v) 230 (1 phase) 230 (1 phase) 230 (1 phase) 230 (1 phase)
Flow/return tappings (BSPF) 3/4" 3/4" 1" 1"
Integrated heating element (kW) 3 3 3 3
Min/max operating temperatures - Air (°C) -15 to +25 -15 to +25 -15 to +25 -15 to +25
Max flow temperatures - Water (°C) 55 55 55 55
Compressor Rotary Rotary Scroll Scroll
Base tray trace element Yes Yes Yes Yes
Sound power level at 1 metre (dB(A)) * 64 65 71.5 73.3
Sound pressure level at 1 metre (dB(A)) * 49.2 50 57 58.5
Starting current (A) rms 25 24 28 36
Nominal running current (A) 9.1 10.7 14 16.1
* In accordance with BSENISO3744:1995
06

Performance data
Features
• High COP’s
• MCS approved
• R407C refrigerant
• All models are single phase
• Outputs from 6.5kW-13kW
• Built-in 3kW immersion backup
• Simple plumbing and electrical connections
• Compact design with common footprint for all models
• Weather compensating control
• Base tray heating element
• Extendable condensate deflector
• 2 year product guarantee (extendable to 5 years)
Model
Air temp.
Water temp.
7°C 0°C -3°C Performance curve
35°C * 35°C * 35°C *
Output
kW
7.0 4.3 4.1
COP 3.8 2.4 2.3
Output kW
14
12
10
8
6
4
2
7
6
5
4
3
2
1
COP
HPAW65
HPAW65
0
-15
-12
-7
-3
2
Outside temp °C
7
12
15
0
HPAW65
Output
kW
8.4 5.2 5.0
COP 3.8 2.5 2.4
Output kW
16
14
12
10
8
6
4
7
6
5
4
3
2
COP
2
1
0
-15
-12
-7
-3
2
7
12
15
0
HPAW85
HPAW85
Outside temp °C
HPAW110
HPAW110
Output
kW
10.9 6.8 6.4
COP 3.9 2.5 2.4
Output kW
20
18
16
14
12
10
8
6
4
2
0
-15
HPAW110
-12
-7
-3
2
Outside temp °C
7
12
15
7
6
5
4
3
2
1
0
COP
Output
kW
12.3 7.5 7.3
COP 3.9 2.4 2.3
Output kW
25
20
15
10
5
7
6
5
4
3
2
1
COP
HPAW130
HPAW130
0
-15
HPAW130
-12
-7
-3
2
Outside temp °C
7
12
15
0
* Tested to BSEN14511
Note: When selecting an Air Source heat pump, ensure output is matched with the correct system design temperature (varies by location)
01380 736920 | www.grantuk.com
07

Grant Aerona HE range
The Aerona HE
Following the success of the original Aerona air
to water heat pump models, and in response to
comments and ideas from our customers, Grant
UK has developed the Aerona HE range.
The brief for this was straightforward - bigger single phase models,
higher outputs and COPs at lower air temperatures with quieter
noise levels, whilst maintaining the tried and tested features of
the existing Aerona range. The new Aerona HE is available in
6.5kW, 8.5kW, 12.5kW, 17.5kW and 21.5kW outputs (Note: this
does not include the immersion back up).
Design
To achieve better COP’s, and further reduce running costs, the
Aerona HE range was designed with larger evaporator surface
areas, increasing the amount of air flow through the unit. The
fans run at lower speeds and this coupled with the improved
internal insulation has successfully decreased noise levels. The
HE models also use R410a refrigerant, which allows the unit to
operate at lower ambient temperatures.
As with all products in the Aerona range, the models are designed
to be installer friendly and come complete with factory fitted
weather compensation controls, 3kW electrical backup* and
flexible flow and return connections, so there are no hidden extras.
*Note: to fully comply with MIS3005, the backup heater should not be energised until the
minimum design temperature has been reached (e.g. -3°C).
Features
• High COP’s sustainable at lower temperatures
• R410a refrigerant
• Outputs from 6.5kW-21.5kW
• Built-in 3kW electrical backup
• Improved sound insulation
• Adjustable legs
• All models are single phase
• Weather compensating control
• Base tray heating element
• 2 independently operating compressors
(17.5kW and 21.5kW models only)
• Extendable condensate deflector (all models except 21.5kW)
• Simple plumbing and electrical connections
• 2 year product guarantee (extendable to 5 years)
Technical specifications
Model ASHE65 ASHE85 ASHE125 ASHE175 ASHE215
Height (mm) 1077 1378 1378 1528 1452
Width (mm) 1117 1117 1117 1117 1537
Depth (mm) 427 427 427 679 679
Weight (kg)
Empty
Full
116
121
145
151
173
181
233
245
334
346
Water proof level IPX4 IPX4 IPX4 IPX4 IPX4
Refrigerant R410a R410a R410a R410a R410a
Operating voltage (v) 230 (1 phase) 230 (1 phase) 230 (1 phase) 230 (1 phase) 230 (1 phase)
Flow/return tappings (BSPF) 3/4" 3/4" 1" 1" 1"
Integrated heating element (kW) 3 3 3 3 3
Min/max operating temperatures - Air (°C) -20 to +30 -20 to +30 -20 to +30 -20 to +30 -20 to +30
Max flow temperatures - Water (°C) 60 60 60 60 60
Compressor Rotary Rotary Scroll 2 x Rotary 2 x Scroll
Base tray trace element Yes Yes Yes Yes Yes
Sound power level at 1 metre (dB(A)) * 62.5 63 64 68.5 63
Sound pressure level at 1 metre (dB(A)) * 48 48 49 53 48.5
Starting current (A) (rms) 26 26 45 28/37 50/60
Nominal running current (A) 7.2 9.2 13.3 10.3/20.5 12.3/24.4
* In accordance with BSENISO3744:1995
08

Performance data
Model
Air temp.
Water temp.
7°C 0°C -3°C
35°C * 35°C * 35°C *
Performance curve
14.0
9.0
Output
kW
6.7 4.4 4.3
COP 4.1 2.9 2.7
Output kW
12.0
10.0
8.0
6.0
4.0
2.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
COP
ASHE65
ASHE65
0.0
-20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 0.0
Outside temp °C
Output
kW
8.8 6.7 6.0
COP 4.3 3.1 2.8
Output kW
16.0
14.0
12.0
10.0
8.0
6.0
4.0
9.0
6.0
5.0
4.0
3.0
2.0
COP
2.0
1.0
ASHE85
ASHE85
0.0
-20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 0.0
Outside temp °C
Output
kW
12.3 8.5 8.0
COP 4.0 2.9 2.6
Output kW
25.0
20.0
15.0
10.0
8.0
7.0
6.0
5.0
4.0
3.0
COP
5.0
2.0
1.0
ASHE125
ASHE125
0.0
-20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 0.0
Outside temp °C
25.0
9.0
Output
kW
17.8 12.0 11.7
COP 4.0 2.8 2.6
Output kW
20.0
15.0
10.0
Compressor (1+2)
Compressor (1)
8.0
7.0
6.0
5.0
4.0
3.0
COP
5.0
2.0
ASHE175
ASHE175
1.0
0.0
-20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 0.0
Outside temp °C
30.0
7.0
Output
kW
21.2 15.5 15
25.0
20.0
Compressor (1+2)
6.0
5.0
COP 3.9 2.9 2.7
Output kW
15.0
10.0
Compressor (1)
4.0
3.0
2.0
COP
5.0
1.0
ASHE215
ASHE215
0.0
-20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 0.0
Outside temp °C
* Tested to BSEN14511
Note: When selecting an Air Source heat pump, ensure output is matched with the correct system design temperature (varies by location)
01380 736920 | www.grantuk.com
09

General information
Installation and maintenance
The installation of a Grant Aerona heat pump should be
carried out by a Grant G-One accredited heat pump installer.
More information on this scheme is available from the Grant
UK website.
Servicing should be carried out annually by a qualified heating
engineer. During servicing it is important for the engineer to
ensure that the evaporator matrix is clear of debris as any build
up could significantly affect the performance of the heat pump.
Guarantees
Grant Aerona heat pumps are guaranteed for 2 years from the
date of purchase (excluding consumable items), subject to
being serviced annually and installed in accordance with the
manufacturer’s instructions. This warranty can also be extended
to 5 years for an additional fee. See the Aerona installation
manual for further details.
On completion of the installation all Grant Aerona heat pumps
must be commissioned and registered online at:
www.grantuk.com
Renewable Heat Incentive
Currently in the UK, just under half of our carbon emissions
are created by heating buildings and water. Over 99% of this
is predominantly supplied by fossil fuels and less than 1% by
renewable energy. The proposed Renewable Heat Incentive
(RHI) has been designed by the Department of Energy & Climate
Change (DECC) to alter this way of living, so that by 2020, 12%
of heat is generated by renewable technology, thereby cutting
carbon emissions and allowing the UK to hit its binding EU targets.
From October 2012, the RHI guarantees long-term payments
for the end user on specified renewable installations. It includes
all types of heating, from households to factories and public
sector buildings. The tariffs, which will be annually adjusted
with inflation, will be paid for a number of years to eligible
technologies installed since 15th July 2009 with payments being
made for each kWh of renewable heat produced.
It is important to remember that the end user can only claim
cash-back through the RHI if the product and installer are
both MCS approved. MCS is an independent scheme for the
certification of microgeneration products and installers. It is
designed to assess these products and installers against robust
criteria, which provides greater protection for consumers when
fitting renewable technologies to their property.
Approvals
Grant Aerona heat pumps are manufactured using CE approved
components and include a BEAB certified 3kW immersion
element. To ensure performance standards, the units have been
tested and approved in a UK test house to BSEN14511.
All heat pump cylinders are manufactured in accordance with
BS EN12897 the specification for unvented hot water storage
vessels. They all comply with Building Regulations G3 and
Water Regulations. Cylinder performance complies with the
requirements BSEN806, BS1566 and BS7206 and meets the
NHBC criteria.
Aftersales service
For peace of mind, all Grant Aerona heat pumps are backed
by Grant’s comprehensive service operation and in the unlikely
event of a problem occurring, your installer should telephone
our Customer Service Department on: 01380 736920
10

Grant Heat Pump cylinders
Duplex stainless steel unvented indirect mains
pressure cylinders for either the Grant Aerona or
combining heat pumps with solar thermal systems.
Heat pump cylinders
Grant has introduced a range of
stainless steel cylinders specifically
matched to the Aerona, which
incorporate a larger primary coil for
quicker heat transference.
The new cylinders are available in
seven indirect single coil versions,
ranging from 125-400 litres and five
indirect twin coil versions ranging
from 170-400 litres.
Grant heat pump cylinders feature
compression fittings which are
conveniently located to make
installation quicker and easier.
For more information and sizes, visit our website: www.grantuk.com
Domestic Hot Water
(DHW) Boost kit
Whilst it is possible to raise the DHW to 60°C with
an Aerona heat pump, it can be more efficient to
set the hot water temperature between 45°C and
50°C and utilise Grant’s Domestic Hot Water Boost
kit to take the cylinder up to the desired higher
temperature. This unit comprises an enclosure
with 20A rated contactor, an override switch and relay, which
works with the immersion element fitted in all Grant cylinders.
Sealed system kits
Sealed system kits are available to
suit all heat pump models. The kits
come in either a 12ltr or 18ltr size
for standard systems and a 50ltr
size for use with the ThermaWave
thermal store.
For further information, see the
Grant product price list.
Grant MonoWave Heat Pump cylinders unvented indirect single coil duplex stainless steel
Model
Capacity
(ltrs)
Pressure
regulator
(bar)
Immersion
fitted
(kW)
Expansion
vessel
(ltrs)
Coil rating
primary
(kW)
Standing
heat loss
(kW/24hrs)
Dimensions
height
(mm)
Dimensions
diameter
(mm)
HPMONO/IND125 125 3 3 12 24.0 1.70 800 580 30 155
HPMONO/IND150 150 3 3 12 27.8 1.92 890 580 32 182
HPMONO/IND170 170 3 3 19 27.8 2.04 1075 580 45 215
HPMONO/IND200 200 3 3 19 47.0 2.45 1230 580 49 249
HPMONO/IND250 250 3 3 24 47.0 2.69 1480 580 59 309
HPMONO/IND300 300 3 3 24 56.6 2.71 1745 580 68 368
HPMONO/IND400 400 3 3 35 56.6 2.94 2110 580 76 476
Weight
empty
(kg)
Weight
full
(kg)
Grant MonoWave Heat Pump cylinders unvented indirect solar twin coil duplex stainless steel
Model
Capacity
(ltrs)
Solar
(kW)
Pressure
regulator
(bar)
Immersion
fitted
(kW)
Expansion
vessel
(ltrs)
Note: Grant MonoWave and DuoWave Heat Pump cylinders include a factory-fitted temperature
and pressure relief valve, set to operate at 7 bar and 90°C.
Coil rating
primary
(kW)
Standing
heat loss
(kW/24hrs)
Dimensions
height
(mm)
Dimensions
diameter
(mm)
HPDUO/IND170 170 3 3 19 32 8.5 2.04 1075 580 57 227
HPDUO/IND200 200 3 3 19 47 10 2.45 1230 580 61 261
HPDUO/IND250 250 3 3 24 47 16 2.69 1480 580 71 321
HPDUO/IND300 300 3 3 24 55.6 16 2.71 1745 580 80 380
HPDUO/IND400 400 3 3 35 55.6 23 2.94 2110 580 100 500
Weight
empty
(kg)
Weight
full
(kg)
01380 736920 | www.grantuk.com
11

This leaflet is accurate at the time of printing but as Grant UK has a policy of continual
improvement it may be superseded. We reserve the right to amend specifications
without prior notice. The statutory rights of the consumer are not affected.
All products manufactured under I.S. EN ISO 9001 and ISO 14001.
THE GRANT ‘EZ-FIT FLUE’ SYSTEM is a trade mark of Grant Engineering Limited.
®Grant Aerona, Grant Spira, Grant Vecta, Grant Vortex, Grant Solar, Grant Aurora,
Grant Sahara, Grant CombiSOL, Grant WinterSOL, Grant MonoWave, Grant
DuoWave, Grant ThermaWave, Euroflame and Multi Pass are registered trade
marks of Grant Engineering Limited. The contents of this leaflet are fully protected
by copyright and nothing may be reproduced without permission from Grant UK.
Grant Engineering (UK) Ltd
Hopton House, Hopton Industrial Estate,
Devizes, Wiltshire, SN10 2EU
T: 01380 736920 F: 01380 736991
E: sales@grantuk.com w: www.grantuk.com
GHPB 02/13 UK