ESP 400-200Ltr, 400-250Ltr, 400-300Ltr User Manual
©ESP Ltd. Sept 2008
Operation &Installation
Manual
The ESP Ecocent
Model:
ESP 400-200Ltr
ESP 400-250Ltr
ESP 400-300Ltr
Please keep this manual safely and read
it carefully before installation or operation
2 ©ESP Ltd. Sept 2008
Contents
Warning!!!!
READ THIS BEFORE INSTALLING THE
UNIT.
All un-vented water heating systems above 15 litre (this includes the ESP Hot Water ASHP‟s) MUST be installed to
meet the requirements of the Building Regulations. It is a
legal requirement that the local Building Control Officer be
notified of any proposed installation of un-vented water
heating systems over 15 litre capacity.
Furthermore, it must be fitted by an installer who has successfully completed a recognised course in the installation
of un-vented heating systems such as CITB. Failure to properly fit the unit may affect its efficiency and invalidate any
guarantee.
Safety requirements in the UK call for an expansion space
(internal or external), safety devices to prevent the stored
water exceeding 100°C, and pipework to convey discharged
hot water safely away from the safety devices.
Preface………………………………………………………………..3
General Requirements………………………………………………..4
Specs…………………………………………………………………6
Function Presentation………………………………………………..8
Installation…………………………………………………………...9
Commissioning……………………………………………………...18
Maintenance…………………………………………………………19
User Instructions…………………………………………………….22
Safety Precautions…………………………………………………...24
Guarantee……………………………………………………………26
Spare Parts…………………………………………………………...27
Appendix 1…………………………………………………………..27
Appendix 2…………………………………………………………..36
3 ©ESP Ltd. Sept 2008
Preface Hot water air source heat pump
PLEASE NOTE FOR TRANSPORT AND STORAGE!!!:
Storage
The unit must be stored and/or transported in its shipping container in an
upright position and kept dry. For transport over short distance, and provided
due care is exercised, an inclination angle of up to 60 degree is permitted.
Both during transport and storage, ambient temperatures of - 20 to +70 are
the limits.
Transport using a forklift
When transporting by fork lift, the unit must remain mounted on the pallet.
The lifting height should be kept to a minimum. Due to its top-heaviness, the
unit must be secured against tipping over. To prevent any damage, the unit
must be placed on a level surface!
Manual transportation
For the moving the unit by hand, the wooden pallet can be used for bottom
lifting. Using ropes or carrying straps is permissible with great care being
taken not to damage the unit.
With all manual handling, care must be taken that the max. permissible inclination angle of 60 degree is not exceeded. If transport in an inclined position
cannot be avoided, the unit MUST be left upright for at least 90 mins. in the
planned installation position before being installed. Failure to do this may
cause serious damage to the unit during and following installation.
This manual includes the necessary information about installation, and
maintenance of the Ecocent. Please read this manual carefully before
you install or carry out maintenance on the unit.
When installing the unit , please carry it out strictly according to the man-
ual.
Please do not switch the unit on until you are sure that it has been properly installed.
The installer should explain to the end user how to operate and maintain
the unit before handing over the unit to the end user. Also, the installer
should advise the end user to read the manual fully before operating the
unit.
The supplier and/or manufacturer of the unit will not be responsible if
someone is injured or the unit is damaged, as a result of installation, operation and/or maintenance that is not in line with this manual. Further,
improper installation, operation and/or maintenance, and failure to maintain the unit as per this manual will invalidate any unit warranty or guarantee.
The manual may be altered and/or updated in any way at the sole discretion of the supplier and/or ESP without notice.
4 ©ESP Ltd. Sept 2008
1. General Requirements
IMPORTANT : PLEASE READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE INSTALLING THE ESP Ecocent (“DHW ASHP” or “unit”).
INCORRECT INSTALLATION WILL INVALIDATE ANY GUARANTEE.
THIS UNIT IS NOT INTENDED FOR USE BY PERSONS (INCLUDING
CHILDREN) WITH REDUCED PHYSICAL, SENSORY OR MENTAL CAPABILITIES, OR LACK OF KNOWLEDGE AND EXPERIENCE, UNLESS
THEY HAVE BEEN GIVEN SUPERVISION OR INSTRUCTION CONCERNING THE USE OF THE UNIT BY A PERSON RESPONSIBLE FOR
THEIR SAFETY.
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.
PLEASE NOTE THAT THERE ARE ESSENTIALLY 2 UNITS COMBINED
INTO ONE IN THE ESP DHW ASHP AND YOU MUST BE SURE TO UNDERSTAND BOTH ELEMENTS—THE INDIRECT PRESSURIZED CYLINDER AND THE AIR SOURCE HEAT PUMP.
1.1 COMPONENT CHECK LIST
Before commencing installation check that all the components for your unit
are contained in the package. The following components are supplied as standard with the unit :
• Factory fitted immersion heater (s) and thermal controls
• Cold Water Combination Valve (comprises Pressure Reducing Valve,
Strainer, and Check Valve)
• Expansion Core Unit (comprises Check Valve and Expansion Valve)
• Temperature/Pressure Relief Valve (set at 90 - 95°C/1 Mpa (7bar))
• Tundish (included in Cold Water Combination Valve pack)
• Factory fitted Indirect Thermostat and Thermal Cut-out
Further detail is provided on the above at Appendix 1 and you should make
sure that you read the Appendix thoroughly before undertaking any installation or other work on the unit.
1.2 SITING THE UNIT
The unit must be vertically floor mounted. It can be placed anywhere convenient provided the discharge pipe(s) from its safety valves can be correctly
installed. Areas that are subject to freezing must be avoided. Ensure that the
floor is of sufficient strength to support the weight of the unit when full with
water. Pipe run lengths should be kept as short as possible for maximum
economy and efficiency. Access to associated controls, immersion heaters
and indirect controls must be possible for servicing and maintenance of the
unit. Please do not install valves or pipework (except discharge pipe) within
50mm (2”) of the T&P relief valve to allow insulation to be fitted. The insu-
lation is important to ensure heat and energy conservation.
IMPORTANT NOTE: DO NOT SITE THE UNIT IN THE SAME ROOM
AS AN OPEN FLUED APPLIANCE OR A ROOM WHERE AN OPEN
FLUED APPLIANCE TAKES ITS COMBUSTION AIR FROM UNLESS
THE MATTER HAS BEEN CAREFULLY CONSIDERED AND ADEQUATE DUCTING AND VENTILATION HAS BEEN PROVIDED FOR
THE UNIT (THE DHW ASHP).
.
1. General Requirements
Hot water air source heat pump Hot water air source heat pump
5 ©ESP Ltd. Sept 2008
Please be sure to use appropriate lifting equipment when moving the unit.
1.3 WATER SUPPLY
Bare in mind that the mains water supply to the property will be supplying both
the hot and cold water requirements simultaneously. Therefore, it is important
that the maximum water demand be assessed and the water supply checked to
ensure this demand can be met.
NOTE: A high mains water pressure will not always guarantee high flow rates.
Wherever possible the main supply pipe to the unit should be in 22mm. The
minimum mains water supply requirements should be 0.15 MPa (1.5 bar)
working pressure and 20 litres per minute flow-rate. At these values outlet flow
-rates may be poor if several outlets are used simultaneously, the higher the
available pressure and flow-rate the better the system performance will be.
The unit has a design operating pressure of 3 bar which is controlled by the
Cold Water Combination Valve. The Cold Water Combination Valve can be
connected to a maximum mains supply pressure of 1.6 MPa (16 bar). The water
supply must be of wholesome water quality (Fluid Category 1 as defined by the
Water Supply Regulations 1999).
The unit MUST be sited on a level surface, otherwise this could cause problems with condensate draining from the heat pump section of the unit in to the
condensate drain.
An inline strainer and scale inhibitor (WRAS approved) must be fitted “in line”
on the water supply to the unit. Failure to fit these will invalidate the unit warranty/guarantee. All fittings must be WRAS approved.
1.General Requirements
Hot water air source heat pump Hot water air source heat pump
1.General Requirements
1.4 OUTLET/TERMINAL FITTINGS (TAPS, ETC.)
The unit can be used in conjunction with most types of terminal fittings. It is
helpful in many mixer showers to have balanced hot and cold water supplies;
in these instances the balanced cold water supply should be tee‟d off the sup-
ply to the unit immediately after the Cold Water Combination Valve (see Figures 4 and 5). Branches to cold drinking water outlets should be taken before
the valve.
NOTE: Accessories should have a rated operating pressure of at least 0.8 MPa (8 bar).
1.5 LIMITATIONS
The unit should not be used in any of the following instances:
Solid fuel boilers or any other boiler in which the energy input is not under
effective thermostatic control, unless additional and appropriate safety
measures are installed.
Gravity circulation primaries.
Steam heating plant unless additional and appropriate safety devices are
installed.
Ascending spray type bidets or any other Class 5 back syphonage risk re-
quiring that a appropriate air gap be employed.
Water supplies that have either inadequate pressure or where the supply
may be intermittent.
Situations where it is not possible to safely pipe away any discharge from
the safety valves.
Areas where the water contains a high proportion of solids, eg. suspended
matter that could block the strainer, unless adequate filtration can be ensured.
Where another appliance in the room is vented by way of an open flu.
The installation must be carried out in accordance with the relevant re-
quirements of:
6 ©ESP Ltd. Sept 2008
2.1 APPEARANCE
2.2 CHARACTERISTICS
Good looking and efficient
The attractive design allows the unit to be placed in the open in finished
utility spaces and basements; depending on ambient conditions, the cost
of operation can be 25% of that of an electric water heater, and can be
used in locations unsuitable for solar hot water heating.
Environmentally friendly and safer
Produces no harmful emissions locally; there is no combustion of oil,
coal, or natural gas. No carbon monoxide is produced and there is no
open flame.
Easy to operate and multiple heat sources
Contains a timer for start and stop and an adjustment dial for easy setting
of the water temperature; the unit can take heat from a number of sources
- the outside environment, from an attic space, or from hot areas in light
industrial environments.
2.Specs
A) The appropriate Building Regulations: either The Building Regula-
tion (England), The Building Regulations (Scotland) or Building
Regulations (Northern Ireland).
B) The Water Fittings Regulations (England and Wales) or Water Bye
laws (Scotland).
C) Any other applicable Regulations.
Failure to observe any of the above conditions will invalidate the warranty/gurantee.
1.6 HOT WATER AIR SOURCE HEAT PUMP PACKAGE
The unit will be supplied with the fittings detailed in section 1.1 above.
Hot water air source heat pump
1.General Requirements
Hot water air source heat pump
7 ©ESP Ltd. Sept 2008
2.3 DIMENSIONS
ESP 400 SERIES—150L/200L/250L/300LD
Unit/mm
2.4 PERFORMANCE PARAMETER
Measuring conditions
Instant heating: Ambient temperature 20/19,Water outlet 55°C
Operating range
(1).Ambient temperature range is 0-40°C
(2). The max water temperature is 60°C
2. Specs
2. Specs
Hot water air source heat pump
Hot water air source heat pump
Please note - Stabbings may vary by model.
Model
ESP400 010-150L(D) 010-200L(D) 010-250L(D) 010-300L(D)
Heating capacity
kW 2.6 2.6 2.6 2.6
Water tank capacity
L 150 200 250 300
Power input
W 810 810 810 810
Running current
A 3.7 3.7 3.7 3.7
Power supply
V/PH/ 220/1/50 220/1/50 220/1/50 220/1/50
Compressor Number
1 1 1 1
Compressor
Rotary Rotary Rotary Rotary
Rated outlet water tempera-
°C 55 55 55 55
Max. outlet water tempera-
°C 60 60 60 60
Air volume
M³/h 450 450 450 450
Air pressure
Pa 60 60 60 60
Duct diameter
Mm Φ200 Φ200 Φ200 Φ200
Noise
dB(A) 49 49 49 49
Water inlet size/outlet size
Inch ¾" ¾" ¾" ¾"
Auxiliary electrical heating
kW 1.5 1.5 1.5 1.5
Net dimensions
mm φ470≠1830 φ560≠1700 φ560≠1950 φ640≠1750
Net weight
Kg 63 81 81 88
Shipping weight
kg 68 78 86 93
8 ©ESP Ltd. Sept 2008
3.Function presentation
3.1 PLEASE NOTE:
Heating capacity
The unit absorbs energy from the air inlet location ambient conditions. If the
air inlet temperature is low, heating capacity will show variation from standard
conditions.
3 minutes protection
When the unit stops, if you restart the unit or turn on the manual switch, the
unit will not run for 3 minutes. This is built in protection for the compressor.
Heating mode running
If the ambient temperature is too high, to protect the unit, the fan motor will
stop running.
Defrosting
When in heating mode, the unit will defrost automatically. The fan motor will
stop running when the unit is defrosting.
Working condition
The unit should be run at ambient temperatures of 0-40 deg. The unit includes
sophisticated electronic devices - do not fill the heating system with water
from lake, river water or groundwater and be sure to put an inline strainer and
scale inhibitor in the cold water feed - failure to do so will invalidate the warranty/guarantee.
Power off
If the power supply is off, the unit will stop running. If operation is disturbed
by lightning, power grid fluctuations or similar, please turn the power supply
off manually and then power on again to reset.
3.Function presentation
Hot water air source heat pump
Hot water air source heat pump
Earthing
The unit MUST be earthed and facility is provided for this in the unit design
- be sure to have the unit properly earthed during installation. You must have
the unit fitted by a suitably qualified installer - we accept no responsibility for units that are not fitted by fully qualified installers. Also, failure
to have the unit fitted by a suitably qualified installer will invalidate the
warranty/guarantee of the unit.
9 ©ESP Ltd. Sept 2008
4.1 INSTALLATION DIAGRAM
Please note: Circulation of the hot water, solar and heat reclaims is optional.
Please contact Earth Save Products before using the primary coil.
ATTENTION
The one-way safety valve attached with the unit must be installed or it will
cause damage to the unit and can cause injury in certain circumstances.
Ensure that any damage to the unit caused prior to delivery is notified to the
Supplier within 5 days of delivery. Failure to notify the Supplier within this
time period will mean that any claims relating to damage will be rejected.
4.2 PIPE FITTINGS
All pipe connections to the unit are 22mm. The fittings are also threaded
3/4” BSP male should threaded pipe connections be required.
Air ducts must be at least in 6 inch rigid pipe.
4.3 COLD WATER SUPPLY
A 22mm cold water supply is recommended, however, if a 15mm (1/2”) sup-
ply exists which provides sufficient flow (see section 2.3) this may be used.
More flow noise may be experienced from small bore pipes due to the increased water velocity through them.
The Cold Water Combination Valve supplied with the unit incorporates a
full flow isolating valve which will enable the unit to be isolated from the
mains supply for maintenance or servicing. To close the valve the black handle should be turned so that it lies at 90°C to the direction of flow. To open
turn the handle so that it lies parallel to the direction of flow.
An inline filter and an effective scale prevention device must be fitted to the
cold feed.
4.4 COLD WATER COMBINATION VALVE (see Figure 2)
The Cold Water Combination Valve must be sited close to the unit to allow
the safety discharge pipe to run in to the tundish, in line with appropriate
Regulations. The Expansion Valve connection must not be used for any
other purpose.
The Cold Water Combination Valve can be installed as a complete one-piece
unit. The valve incorporates a factory set, non-adjustable Pressure Reducer/
Strainer, an Expansion Valve connection and a single Check Valve. The
valve can be fitted in any orientation to suit the installation, however, ensure
that the Valve is installed with the direction of flow arrows (stamped on the
side of the brass body) pointing towards the unit.
4. Installation 4. Installation
Hot water air source heat pump
Hot water air source heat pump
10 ©ESP Ltd. Sept 2008
4 . Installation 4 . Installation
Should you wish to site the Expansion Valve on the Cold Water Combination
Valve this can be done by unscrewing the connection nut beneath the Expansion Valve on the Expansion Core Unit and removing the Expansion Valve.
The connecting nut and blanking plug should then be unscrewed from the Cold
Water Combination Valve and replaced with the Expansion Valve. Note: if the
Expansion Valve is fitted to the Cold Water Combination Valve the Expansion
Core Unit should not be used as the Check Valve within it will prevent free
passage of expanded water to the Expansion Valve. Ensure the discharge from
the Expansion Valve can be correctly installed.
If a balanced pressure cold water supply is required to a thermostatic shower
mixer valve this may be tee‟d off the supply to the unit immediately after the
Cold Water Combination Valve (see Figure 4). Branches to drinking water outlets should be taken before the valve to avoid the possibility of warm expanded
water being drawn from the tap.
4.5 EXPANSION CORE UNIT (see Figure 3)
Should a balanced pressure cold water supply be required for other cold water
outlets the Expansion Core Unit supplied should be used. The Core Unit should
be fitted into the pipework between the Cold Water Combination Valve and the
unit (note direction of flow arrows). The cold water balanced draw off connection should be taken from between the Cold Water Combination Valve and the
Expansion Core Unit (see Figure 5). The Expansion Valve connection on the
Cold Water Combination Valve should remain blanked off using a blanking nut
and seal. Ensure the discharge from the Expansion Valve can be correctly installed.
Hot water air source heat pump Hot water air source heat pump
11 ©ESP Ltd. Sept 2008
4.6 DRAIN TAP
A draining tap should be installed in the cold water supply to the unit between the Cold Water Combination Valve (or Expansion Core Unit if being
used) and the heater at as low a level as possible It is recommended that the
outlet point of the drain pipe work be at least 1 metre below the level of the
heater (this can be achieved by attaching a hose pipe to the drain tap outlet
spigot).
4.7 OUTLET PIPEWORK
Ideally the pipework from the unit to the outlet fittings should be in 22mm
pipe with short runs of 15mm pipe to showers and basin taps. Small bore pipe
can also be used to suit some taps, but runs should be of minimum length.
Pipe sizes may vary due to system
4.8 SECONDARY CIRCULATION
If a secondary circulation system is required it should be installed as per Figure 6. The secondary return pipe should be in 15mm pipe and incorporate a
check valve to prevent backflow. A suitable WRAS approved bronze circulation pump will be required with appropriate unions. On large systems, due to
the increase in system water content, it may be necessary to fit additional expansion volume to the system by fitting an external expansion vessel to the
secondary circuit. This should be done if the capacity of the secondary circuit
exceeds 10 litres.
Pipe capacities (copper)
15mm o/d = 0.13 litres per metre run (10 litres = 77m)
22mm o/d = 0.38 litres per metre run (10 litres = 26m)
28mm o/d = 0.55 litres per metre run (10 litres = 18m)
Secondary circulation is NOT recommended for units being used on “Off
Peak” electricity tariffs.
4 . Installation 4 . Installation
Hot water air source heat pump Hot water air source heat pump
12 ©ESP Ltd. Sept 2008
4 . Installation 4 . Installation
4.11 DISCHARGE PIPEWORK
It is a requirement of Building Regulations that any discharge from an unvented system is conveyed to where it is visible, but will not cause danger to
persons in or about the building. The tundish and discharge pipes should be
fitted in accordance with the requirements and guidance notes of Building
Regulations. Building Regulation G3 Requirements and Guidance section
4.10 are reproduced in the following sections.
Information Sheet No. 33 available from the British Board of Agrément gives
further advice on discharge pipe installation. For discharge pipe arrangements
not covered by G3 Guidance or BBA Info Sheet No.33 advice should be
sought from your local Building Control Officer. Any discharge pipe connected to the pressure relief devices (Expansion Valve and Temperature/ Pressure Relief Valve) must be installed in a continuously downward direction
and in a frost free environment.
The water may drip from the discharge pipe of the pressure relief device and
that this pipe must be left open to the atmosphere. The pressure relief device
is to be operated regularly to remove lime deposits and to verify that it is not
blocked.
Please see figure 7 for typical discharge arrangement.
EXPANSION VESSEL
An appropriately sized expansion vessel must be fitted to the system in which
the unit is incorporated and it should discharge in to the tundish. The Expansion vessel can be fitted to the cold feed in to the unit (see Figures 4 and 6).
G3 REQUIREMENT
“...there shall be precautions...to ensure that the hot water discharged from
safety devices is safely conveyed to where it is visible but will not cause danger to persons in or about the building.”
Hot water air source heat pump Hot water air source heat pump
4.9 T&P RELIEF VALVE (“TPRV”)
The TPRV is factory fitted and must not be interfered with in any way and/or
removed - under NO circumstances should the installer or end user tamper
with the TPRV or the warranty/guarantee will be invalidated and serious damage may occur. You will find detailed information on this safety device at Appendix 2.
4.10 WARNINGS
i) Under no circumstances should the factory fitted TPRV be removed other
than by approved, fully trained and experienced fitters. To do so will invalidate any warranty/guarantee or claim.
ii) The Cold Water Combination Valve, in line strainer and scale inhibiting de-
vice must be fitted to the mains water supply to the unit.
iii) No control or safety valves should be tampered with.
iv) Water may drip from the discharge pipe of the pressure relief device
(Expansion Valve) and this pipe must be left open to atmosphere. The dis-
charge pipe should not be blocked or used for any other purpose.
v) For units with primary coil facilities, please discuss use of the coil, and a
suitable configuration for use, with ESP before proceeding to add a heat
source to the primary coil.
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