ESP HT 9 KW User manual

www.esavep.com
Air source heat pumps
Installation and user
manual
ESP HT 9kW
ESP HT 12kW
ESP HT 15kW

2 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
1.0 Preface
2.0 System Overview
2.1 General Information
2.2 Specification Table
2.3 Dimensions and Scale
2.4 Performance Graph (COP)
3.0 Installation & Maintenance
3.1 Cautions & Warnings
3.2 Transit
3.3 Installation Position
3.4 Securing the Unit
3.5 Water Loop Connection
3.6 Water Pump
3.7 Power Supply Connection
3.8 Power Cable and Switch
3.9 Normal Heating and Cooling
3.10 Unit Commissioning Checks
3.11 General Maintenance
3.12 Operating notes for end user
3.13 After sales service & Information
4.0 Controls and Operation
4.1 The Unit controller display
4.2 Functions and associated buttons
4.3 Saving Controller Parameters
4.4 Installing a remote control
4.5 Symbol meanings
4.6 Parameters
4.7 Weather Compensation Data
5.0 FAQ & Troubleshooting
5.1 Support
6.0 Appendices
Appendix 1 Wiring Diagrams
Appendix 2 Installation Engineer’s Details.
Appendix 3 Installation and Commissioning Certificate

3 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
WARNING!
READTHIS BEFORE
INSTALLING THE UNIT.
The installation of all un-vented water heating systems above 15
litres (this includes the ESP Hot Water ASHP’s) MUST
comply with local area Building Regulations. It is a legal
requirement that the local Building Control Officer be notified
of any proposed installation.
UK regulations require an appropriately sized expansion vessel
(internal or external) to be incorporated, safety devices to prevent
the stored water exceeding 100°C, and pipe work to convey
discharged hot water safely away from the safety devices.
Furthermore, the installation must be carried out in
accordance with this manual and by an engineer who has
successfully completed a recognised course in the
installation of un-vented heating systems such as CITB. The
guidance contained in the Good Practice Guide should be
followed. Failure to fit the unit correctly and in accordance
with regulations may affect its safety, efficiency and WILL
invalidate any guarantee.
THE UNIT MUST BE INSTALLED, COMMISSIONED AND
MAINTAINED BY A COMPETENT INSTALLER IN ACCORDANCE
WITH BUILDING REGULATION G3 (ENGLAND AND WALES),
TECHNICAL STANDARD P3 (SCOTLAND) OR BUILDING
REGULATION P5 (NORTHERN IRELAND) AND THE WATER FITTING
REGULATIONS (ENGLAND AND WALES) OR WATER BYELAWS
(SCOTLAND). FOLLOWING INSTALLATION AND COMMISSIONING,
THE OPERATION OF THE UNIT SHOULD BE EXPLAINED TO THE
USER AND THESE INSTRUCTIONS LEFT WITH THEM FOR FUTURE
REFERENCE.

4 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
1.0 Preface
Congratulations on purchasing your ESP air source heat pump (ASHP). It will
give you years of trouble free heating and help reduce your carbon footprint.
ESP ASHP units are built using the highest quality components and the latest
design and technology.
Please read this manual:
It is important that you read this manual and familiarise yourself with the
technology and controls so that you can get the best out of your unit. You
should keep this manual safe and ensure that it is available to engineers that
perform any installation works or maintenance.
Installation:
Please make sure that your ASHP is only installed by a suitably qualified
engineer and in accordance with this manual. If this is not done, it may
invalidate your warranty.
Warranty:
All ESP ASHPs are covered by the warranty contained in the ESP Terms and conditions
of Business a copy of which will have been provided to you prior to your purchase.
YOUR INSTALLATION ENGINEER MUST COMPLETE THE TABLE IN APPENDIX 2
–PLEASE ENSURE THAT THIS IS DONE AND THAT CONTACT DETAILS ARE
CORRECT AND CLEAR.
YOUR INSTALLATION ENGINEER SHOULD ALSO COMPLETE AND SIGN
APPENDIX 3 AND THIS INSTALLATION AND COMMISSIONING CERTIFICATE
SHOULD BE PROVIDED BY THE INSTALLATION ENGINEER AS PART OF THE
HANDOVER PACKAGE. THE CERTIFICATE SHOULD BE KEPT WITH THE UNIT
DOCUMENTATION AND ALWAYS HANDED TO ANY NEW OWNER OR
OCCUPIER OF THE INSTALLATION ADDRESS.

5 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
Pictures and Drawing:
The pictures and drawings in this manual are for information only. The
manufacturer reserves the right to make modifications to the product
without prior notification to the end users.
Children:
You should not let children operate the unit or play close to it when in
operation. The unit has a fast moving fan and, whilst every effort has been
made to ensure that it is not accessible, children may try to put objects in to
it –this can cause injury and seriously damage the unit.
Check on delivery:
On taking delivery of your ASHP, please check for any signs of damage. If you
are not happy with the condition of the unit on delivery, please advise Earth
Save Products (ESP) immediately and point out any damage to the delivery
driver and request that he take notes of your concerns.
Storage:
If put in to storage, the unit must be covered to keep it free from dust build
up and away from direct sunlight.
2.0 System Overview
2.1 General Information
Air source heat pumps are similar in operation to ground source heat pumps,
except that heat is extracted from the air rather than the ground. Air source
heat pumps are classified as either air to air or air to water depending on
whether the heat distribution system in the building uses air or water.
The main advantage of air source heat pumps over ground source heat
pumps is their lower installation cost. A ground source heat pump requires a
network of underground coils that is used to extract heat from the ground. By
comparison, air source heat pumps extract the heat directly from outside air
and so avoid these potential problems.

6 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
Benefits of air source heat pumps over conventional boilers include the fact
there is no combustion and no explosive gases within the building, no need
for flues or ventilation, no local pollution, long life expectancy with minimal /
no annual maintenance, simple engineering/fitting and lower running costs.
Depending on the comparison fuel and heating system being compared to
the ASHP, savings can be up to 75% and the units are designed to have a life
span of 20 years with no substantial annual required or recommended
maintenance.
Component parts of ESP ASHP units are from industry leading manufacturers
such as the Danfoss heat exchanger, Wilo water pump, Copeland compressor
and Carel controller, so reliability and longevity is ensured.

7 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
2.2 Specification Table.
Units
9kW
12kW
15kW
Heating Capacity1
kW
9.2
12.0
14.5
BTU/h
31409
40968
49503
COP1
W/W
3.58
3.6
3.6
Heating Capacity2
kW
9.5
12.9
15.0
BTU/h
32300
43800
51000
COP2
W/W
2.4
2.6
2.6
Power Supply
V/Ph/Hz
230/1/50
230/1/50
230/1/50
Electrical Heater
kW
1.5
3.0
3.0
Electrical Heater
Running Current
A
6.8
13
13.5
Max Running
Current
A
27
42.9
45.2
Number of
Compressors
1
1
1
Compressor Type
Scroll
Scroll
Scroll
Number of Fans
1
2
2
Fan power input
W
120
2X120
2X120
Fan Direction
Horizontal
Horizontal
Horizontal
Water Pump Power
kW
0.2
0.6
0.6
Water Head
M
8
22
22
Water Connection
Inch
1
1
1
Water Flow Rate
m3/h
1.5
2.1
2.6
Water Pressure
Drop
kPa
17
34
34
Noise
dB(A)
46
48
50
Net Dimensions
See Diagrams Below
Shipping
Dimensions
See Shipping Label
Notes:
1. Flow temp 45°C, return temp 40°C
2. Flow temp 60°C, return temp 55°C

8 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
Dimensions and Scale
ESP HT 9KW
ESP HT 12KW/15KW

9 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
2.4 Performance Graphs
15kW HT Heat Output Curve
15Kw HT COP Curve

10 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
12kW HT Heat Output Curve
12kW HT COP Curve

11 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
9 kW HT COP Curve
9kW HT Heat Output Curve

12 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
3.0 Installation and Maintenance
3.1 Cautions and Warnings.
It is of the highest importance that you read and understand this manual and
that the unit is installed in accordance with it. The manual is here to help
with installation and to ensure that damage to people or property is avoided.
INCORRECT INSTALLATION WILL INVALIDATE ANY GUARANTEE.
THE UNIT MUST BE INSTALLED, COMMISSIONED AND MAINTAINED BY
A COMPETENT INSTALLER/ENGINEER IN ACCORDANCE WITH LOCAL
REGULATIONS AND BY-LAWS. FOLLOWING INSTALLATION AND
COMMISSIONING, THE OPERATION OF THE UNIT SHOULD BE
EXPLAINED TO THE END USER BY THE INSTALLER/ENGINEER AND THESE
INSTRUCTIONS LEFT WITH THEM FOR FUTURE REFERENCE.
All plumbing works and electrical works must be carried out by a suitably
qualified plumber and electrician respectively. This is mandated by English
law and there are severe penalties if works are carried out by unqualified, or
not suitably qualified, engineers and tradesmen.
IMPORTANT NOTES:
Belowyou will find information that is critical for the safe and proper installation
and use of the unit. Please make sure that youunderstand the contents as itis
written to help avoid injury toend users,installer and the unit itself.
Professional
installer
is required
The heat pump must be installed by a suitably qualified engineer.
Failure to ensure this can cause damage to the unit and may
cause serious injury. The unit’s warranty will also be invalidated if
a suitably qualified engineer is not engaged to install it.
Earthing
required
Please make sure that the unit and power supply are soundly
earthed.

13 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
Refrigerant
Please give full considerationto adequate ventilation being
available in the eventof a refrigerantleak- this unit must be
installed outdoors.
Installation
Site
Do notinstall the unit near toa gas installation.
Anchor the
Unit
Make sure that the unit is secured a base thatis capable oftaking
the weight of the unit.
Circuit
Breaker
Make sure that the unit is connected to the power supply via a
suitably sized type C MCB.
Unit Upright
The unit must be installed level acrossthe whole width. See
section 3.4 for further details.
OPERATING NOTES:
Do NOT
Do not push anythingthrough the grills protecting the unit,orinto
the fan blades when they are running and make sure that children
cannot access the unit or play close to the unit.
Shut off the
power supply
If there isan unusual sound or smell coming fromthe unit,
immediately shut off the power supplyand call your installation
engineer.
MOVE AND REPAIR NOTES:
Suitably
qualified
engineer
The unit should onlybe moved and/or repaired by a suitably
qualified engineer.
Do NOT
Do NOTtry toinstall, move or repair the unit yourself –it is NOT
worthwhile running the risk ofinjury.
Transporting
the Unit
The unit must be transported in the vertical position.
OPERATION NOTES:
Where to site
the unit
The unit must onlybeinstalled outdoors –the unit is not
designed, nor suitable for, installation ANYWHERE inside the
house. The Unit needs to be sited whereit canreceive and expel
large volumes of ambient air and condensate from the unit must
be drained away to a suitable point to avoid water running from
the unit on to walkways where ice may form. If the unit is to be
left unusedfor any significant period of time, it should be drained

14 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
down. Make sure that the flowand return pipework from/to the
unit have a full flowlevel valvefittedin-line so that the unitmay be
isolated fromthe complete systembefore draining itdown –this
avoids the waste of glycol ifthe wholesystemwere to be drained
down. Make sure that pipework outside is properly laggedso that
it will not freeze in cold weather when theunitis not in use.
Shut off the
power
When cleaningor working on the unit,shut off the power supply.
You MUST
You must use a suitable power supply thatis appropriately fused.
IMPORTANT SAFETY INFORMATION FOR THE END USER
− Installation of the heat pump must only be carried out by persons with
suitable engineering qualifications and experience.
− Do not attempt to modify, repair or service the heat pump yourself,
unless you have been appropriately trained and are suitably
qualified.
− Do not insert body parts or any other items into the air inlet or air outlet;
the fans are provided with a guard for good reason!
− Save in emergencies, do not start or stop the unit by switching the power to
the unit on or off; always use the controls provided on the unit/controller.
Starting/stopping the heat pump using mains power is dangerous for you and
may damage the unit.
− Ensure that the heat pump is protected from prolonged exposure to
large quantities of water (e.g. leaking gutters). Failure to do so may
damage the unit.
− Do not operate the unit or the programmer with wet hands/fingers.
− Upon replacement of any fuse in any part of the power feed to the unit,
ensure a correct replacement is used. Do not, under any circumstances,
use a fuse that is too large or bridge the fuse with silver paper, nails,
wire, or anything similar.
− Keep the programmer for the unit out of reach of children.

15 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
− The electrical supply must be isolated during a heightened risk of lightning
strikes.
− Do not attempt to move the appliance once installed; this must be carried
out by a qualified engineer.
− Isolate the electrical supply to the appliance if you detect an odor from
the unit, or scorching is detected anywhere in or on the unit.
− Only use the unit for the purpose intended and in accordance with this
manual.
− Ensure the area around the unit is clean, well-ventilated and kept free of all
obstructions.
− Do not keep items on top of the unit or use it to support other appliances.
− Do not under any circumstances stand on the unit - it is dangerous for you
and will damage the unit.
− Isolate the electrical supply to the unit if it is to be switched off for a period
of more than a week.
− Drain the water from the water circuit if power to the unit is to be switched
off during very cold weather.
− Periodically check the condition of any supports or wall brackets for
deterioration - have these replaced immediately if any deterioration is
evident.
− Do not wash the unit with water, alcohol, benzene, thinners, glass cleaner,
polish or powders.
− Before cleaning, isolate the electrical supply to the unit. If cleaning of any
internal part of the unit is required, this should only be done by an
appropriately qualified engineer.
- If you have any questions about the operation and maintenance of the
unit that are not addressed in this manual, or if you feel that
something in the manual is unclear, please call the seller, distributor or
ESP.

16 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
3.2 Transit
The unit must be kept upright during transit and securely fastened so that it
does not rock, slide or fall over.
Ensure suitable lifting equipment is available to move the unit around the site
and into position, whilst maintaining a vertical position. Using unsuitable
lifting gear or equipment to move the unit around can cause significant
damage to the unit externally and internally.
When using lifting gear, an 8m cable is needed and the cable should not
touch the surface of the unit –use soft packing between the lifting gear and
the unit to prevent damage to the unit.
3.3 Installation Position
Please note the following important points:
The unit can be installed in any outside location that can support
heavy machinery i.e. balcony, roof terrace or on the ground.
If possible, the unit should be sited on a south facing wall to maximise
solar gain.
Circulation of air around the unit must not be impeded and the
minimum recommended clearances are shown in the diagram below.

17 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
However, PLEASE NOTE that the unit should be positioned away from
strong winds blowing directly on to/through the unit as this can also
impair unit performance.
The unit must be kept a good distance from other heat sources and
any fuel storage.
A cover is needed in the winter to protect the unit from heavy
snowfall.
The unit should be positioned so that it is easily accessible for
maintenance and servicing.
The unit needs to be sited near a water drainage facility to allow the
safe drainage of condensing water that is produced during normal
unit operation.
3.4 Securing the Unit
The unit must be placed upon a level and firm base that is suitable to carry
the weight of the unit e.g. a 100mm concrete base. The base must provide
for the unit to be sitting at least 150mm above the surrounding ground. Allow
for a slight tilt of the unit (3mm across the width running from right to left as

18 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
you face the fan(s)) to allow rain water run-off and any water entering the
unit to drain through the holes in the bottom of the unit.
The unit must be secured to its base using suitable fixings through the unit
feet. The rubber feet supplied with the unit must be used. Alternatively,
there are proprietary unit fixings available that include an adjustable steel
frame and legs with rubber mounting pads. Please consult ESP if you have
any questions on the use of such fixing methods; failure to comply with these
instructions will mean that the unit will not meet certification requirements.
The unit must be fixed, stable and kept vertical during operation.
3.5 Water Loop Connection
Please pay special attention to the following points when installing the unit:
I. Keep pipework as free from bends as possible to keep back pressure
in the system to a minimum. Make sure that fittings, manifolds, water pumps
and valves in the system are designed for full flow as restrictions in the
system from these can materially and adversely impact upon the
performance of the unit and effectiveness of the overall heating system.
II. The piping must be clear and free from debris. Leak testing the heat
distribution system must be carried out before connecting the unit to the
system and repairs made where required.
III. Pressure testing of the distribution and emitter system must be done
BEFORE the unit is connected to the system. If the unit is connected while
pressure testing is carried out, it will damage the unit.
IV. An expansion vessel must be installed where the heating system is
unvented/pressurised. If installing the unit in an unpressurised system, feed
and expansion tanks must be provided and they should be positioned at least
0.5 metre higher than the highest point in the heat distribution system.

19 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
V. The unit is fitted with a water flow switch that will pause the unit
operation if water flow is not continuous (this includes where there is air in
the system). The flow switch is there to protect the unit and the setting
should not be altered. You should check that the switch is working
properly before running the unit for any sustained period. If the flow of
water is insufficient, an error code of “Flow Level” will be displayed on the
controller.
VI. The final connection to the heat pump flow and return must be made
with suitable flexible pipes to prevent vibration in to the system pipework.
Please ensure that two wrenches are employed to take up the torque created
in tightening the fittings to avoid damage to both fittings and heat pump.
VII. These flexible hoses are available from ESP as part of an Installation
Pack or individually.
VIII. Make sure that you fit automatic air vents at high points in the
system. The unit will shut down if air is in the system because the water
flow switch will recognise air in the system as no water flow and a system
alarm/protection code will appear on the unit controller. The Error Message
“Flow Level” will appear on the controller display.
IX. You must fit a pressure gauge and suitable blow off valve at the unit
inlet/outlet where it can be seen from the unit.
X. The unit is supplied with a bung below the flow/return pipes. This
bung must be removed and replaced with a drain-off- cock (DOC). There
must also be a DOC at any lower point in the system, to allow for effective
drain-down of the system as and when required. Please note that, if the
system is to be left idle for a long period in winter, the system should be
drained down. You should fit full flow lever valves on the flow and return to

20 of 52| Earth Save Products-ASHP PASRW030B-D-PS
V 1.8 PASRW040B-D-PS
PASRW050B-D-PS
the unit so that the unit can be quickly and effectively drained down where
required for maintenance.
XI. You must fit a Y-strainer on in-line on the return pipe to the unit. This
is normally fitted in an external location and must have a full flow lever valve
side either side of the strainer to minimise glycol loss during maintenance.
Due to the mix of metals on many systems it is both advisable and preferable
to install a Spirotrap Magnabooster 2 ® rather than the minimum standard Y
strainer. Failure to fit a good quality strainer in the return flow to the unit will
invalidate the warranty on the unit.
XII. Where standard steel radiators are to be fitted, careful consideration
should be given before fitting Thermostatic Radiator Valves (TRVs) because
they are not designed to be used with low temperature systems. If the
decision is taken to use TRVs, one must not be fitted in the same room as a
room thermostat.
3.6 Water Pump
If using a buffer tank in the system, you will need to fit a suitably sized water
pump on the water distribution side of the system. This water pump will
need to be wired to receive an appropriate signal from the heating system.
The ASHP-fitted water pump performance parameters are as follows: