joule DHW 160 Instruction Manual

UK Manufactured Unvented Hot Water Cylinder Installation Guide 1
Joule DHW 160L, 200L, 260L
Installation & Maintenance Manual
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COMMISSIONING
UNITED KINGDOM / IRELAND
https://register-products.joule.ie JG-INS-DHW-002

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Safety Information
This appliance can be used by children aged from 8 years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe way and understand the hazards involved. Children
shall not play with the appliance. Cleaning and user maintenance shall not be made by children without
supervision.
• Hot water may drip from the discharge pipe of the pressure-relief device, this discharge pipe must be le
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.
• Drain valves are located on the hot water tank to allow draining of the water from the primary and
secondary.
• This appliance is intended to be permanently connected to the water mains and not connected by a hose-
set.
• A discharge pipe connected to the pressure relief device must be installed in a downwards direction and
in a frost-free environment.
• The Appliance power cable is to be connected to a suitably sized isolator which disconnects all poles with
a contact gap of at least 3mm.
• The maximum hot water temperature achievable by the Joule DHW Hot Water Heat Pump is 65°C. The
Heat Pump has been tested to EN 16147 :2017+A1:2022 and the function of all Safety devices has been
verified.
• WARNING, CAUTION, DANGER removing the front cover of the appliance will give access to live parts!
Please read maintenance section in this manual before use

UK Manufactured Unvented Hot Water Cylinder Installation Guide 3
Preface
Dear installer,
You are about to install a Joule Ecohet hot water heat pump. This system shall only be commissioned by a
qualified installer. You the installer must have been trained by Joule. Systems installed by untrained installers will
have no warranty guarantee.
Before you start installing the Joule JDHW, please ensure that you have fully read and understood this installation
manual. Use the table of contents on the next page to quickly find information.
The warranty terms are 2 years parts and labour on the Joule DHW and all heat pump system accessories
supplied by Joule, with 10 years warranty on the unit body. To maintain these warranty guarantees a once yearly
service must be carried out by a competent engineer. For further details on the terms and conditions please
consult the warranty section of this manual.
The Joule DHW complies with European directives and additional national regulations which are indicated in a
CE marking. The corresponding declaration of conformity can be requested from Joule.
The Joule DHW complies with protection class IPX2.
For more information, please contact:
Joule UK:
Unit 3, Lefield Park, Park Road,
Pontefract,
West Yorkshire,
WF8 4PS, UK
e: [email protected]
t: 0330 808 8488
f: O 1513 568 336
Joule IE:
Unit 407 NW Business Park,
Cappagh Road, Ballycoolin,
Blanchardstown, Dublin,
D11 HD36, IE
e: [email protected]
t: 353 (1) 6237080
f: 353 (1) 626 9337

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Third Party Certification
Third Party Certification - Documents handover to the customer
Third Party Certification - Components check
Confirm availability of operation and maintenance document, handover document for client
Is the system safe to operate?
Is there adequate access and free space to the system for the purposes of operation and
maintenance?
Has the system been le in reasonably clean condition?
Are all components in good condition?
Y
Y
Y
Y
Y
N
N
N
N
N

UK Manufactured Unvented Hot Water Cylinder Installation Guide 5
Installation Checklist
General
Is the installation complete with no obvious defects present?
Has all protection/packaging been removed such that the system is fully
functional?
Is the ductwork fitted to the correct connections on the heat pump?
Has the heat pump and all its ductwork been effectively insulated?
Is all pipework connected correctly?
Is flow and return pipework connected correctly?
See Page 20 for cable requirements
Has the correct size electrical circuit breaker been installed?
Has an electrical isolation switch been installed?
Has the correct size power cable been used for exhaust air heat pump?
For ducted systems, has ductwork been installed in such a manner that air
resistance and leakage is kept to a minimum?

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Table Of Contents
Introduction ............................................................................................................................... 7
Joule DHW Dimensions................................................................................................................ 15
Technical Specification ................................................................................................................ 16
Pre-Installation Notes................................................................................................................... 18
First Fix Notes............................................................................................................................. 20
Instalation Location ..................................................................................................................... 21
Ventilation Connection ................................................................................................................ 24
Joule DHW Schematic.................................................................................................................. 25
General Pipework ....................................................................................................................... 26
Joule DHW Electrical Connections................................................................................................. 27
Joule DHW Electrical Schematic .................................................................................................... 29
Commissioning the Joule DHW Unit .............................................................................................. 30
Commissioning Controller ........................................................................................................... 31
Maintenance of the Joule DHW ..................................................................................................... 43
Spare Parts................................................................................................................................. 45
Warranty.................................................................................................................................... 49
Benchmark Checklist................................................................................................................... 52
Service Record ........................................................................................................................... 54
Notes........................................................................................................................................ 56

UK Manufactured Unvented Hot Water Cylinder Installation Guide 7
Introduction
General Product Description:
In a similar way to a standard air source heat pump (ASHP) the Joule DHW extracts energy from external
outdoor air for the purpose of domestic hot water (DHW) production. Aer the air runs through the heat
pumps evaporator, cooler air is exhausted back outside.
Who is this manual for?
This manual is intended for the professional installer. The installer must be certified by Joule and have
successfully completed the Joule DHW training. The installer does not need to be in possession of a STEK or
F-gas certification.
The instructions are an integral part of the appliance and must be given to the end user on completion of the
installation in order to comply with the current regulation.
It is important to carefully read the manual to understand all the information to enable safe installation, use
and servicing. These instructions consist of details for installation, servicing, fault finding and replacement
of parts for the unit purchased.
JOULE will not accept any liability in the event of damage for not complying with the guidance in this
instruction manual.
The instructions for this installation manual apply to the range of Joule DHW.
Safety is paramount when installing unvented hot water systems and the following instructions must be
adhered to:
• Only certified competant installers can install, commission and service the equipment supplied.
• The unit must be used for potable hot water only. Any other applications will be considered incorrect
use and JOULE will not be held liable for any losses resulting from such use.
• All installation and maintenance instructions must be observed to ensure the correct operation of the
equipment.
• The electric immersion must not be switched on unless the is completely full of water.
• Domestic hot water may be stored at temperatures exceeding 60°C. Preventative measures should be
put in place to negate the possibility of scalding.
• A maintenance schedule should be put in place with a competent person to service the equipment
annually to comply with the warranty conditions.

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• When servicing the system the mains supply to the unit should be isolated.
• Only genuine spare parts should be used. A full list of items with relevant codes can be found on page
XX.
All current Building Regulations issued by the Department of the Environment, i.e. 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). The installation should also be
in accordance with the following British Standard Codes of Practice:
BS 5449:1990 Forced circulation hot water systems
BS 5546:2000 Installation of hot water supplies for domestic purposes BS 5918:1989 Solar heating systems
for domestic hot water
BS 6700:2006 Design, installation, testing and maintenance of services supplying water.
Failure to install this appliance correctly could lead to prosecution and will invalidate the guarantee. It is in
your own interest and that of safety to ensure that the law is complied with.
Handling
Care must be taken when transporting, storing and installing the equipment:
• At least two people should li the unit to prevent injuries.
• The unit must be stored in a dry area and must never be dropped during handling.
• Packaging should only be removed at the installation location.
• The unit must be installed on a level floor with the required load bearing capability. Installation,
servicing, maintenance and repair must be carried out by a competent person.
• All electrical wiring must be carried out by a qualified electrician and be installed in accordance with
current I.E.E Wiring Regulations.
• A lack of safety devices can lead to potentially fatal injuries, all necessary safety devices must be
installed correctly in the system. The use of an electric immersion may lead to the build up of electrical
potential in the water. This can in turn cause corrosion of the immersion. To prevent this, ensure the
immersion heater, and the hot and cold pipework are correctly bonded and connected to the earth
line.
• If plastic pipes are used they must be approved temperature resistant to 95°C at a pressure of 10bar.
A thermostatic mixer should be installed in the system to prevent the risk of scalding. If there are leaks found
in the system, shut off the cold water stop valve from the main supply and contact a competent person
immediately.

UK Manufactured Unvented Hot Water Cylinder Installation Guide 9
What Is Benchmark?
Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that
customers are provided with the correct equipment for their needs, that it is installed, commissioned and
serviced in accordance with the manufacturer’s instructions by competent persons and that it meets the
requirements of the appropriate Building Regulations.
The Benchmark Checklist can be used to demonstrate compliance with Building Regulations and should be
provided to the customer for future reference. Installers are required to carry out installation, commissioning
and servicing work in accordance with the Benchmark Code of Practice which is available from the Heating
and Hot Water Industry Council who manage and promote the scheme. Visit www.centralheating.co.uk
HWA Charter Member
Joule are proud to be a charter member of the the Hot Water Association (HWA), that has been formed
through the union of the two UK industry trade bodies, WMA (Water Heater Manufacturers Association) and
MODUS (Manufacturers Of Domestic Unvented Systems).
The objectives of the HWA are “To be recognised as the leading body in domestic hot water storage
and, through cooperation and partnerships, to support, drive and promote the sustained growth and
improvement of standards within the entire domestic hot water industry”.
The HWA operate a Charter that all members of the association observe.
The HWA Charter Statement requires that all members adhere to the following:
To supply fit for purpose products clearly and honestly described
• To supply products that meet or exceed appropriate standards and Building And Water Regulations
• To provide pre and post technical support
• To provide clear and concise warranty details to customers

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Water Supply
The performance of any unvented system is only as good as the mains water supply available. To this effect
the maximum possible water demand should be assessed, with the knowledge that the mains supplies both
hot and cold services simultaneously. The water heater itself operates at a pressure of 3bar, controlled by the
inlet control set, and is capable of delivering over 50 litres per minute. The high quality inlet control set has
been designed to make the most of the low rates available.
The water supply should be checked to ensure it can meet these requirements. If necessary, consult the local
water authority regarding the likely pressure and flow rate availability.
Consideration should be given to upgrading existing 1⁄2” (15mm) cold mains pipework to a larger size if
the recommended minimum pressure / flow rate is not being achieved. JOULE recommend that primary
pipework used has a minimum diameter of 22mm to ensure low pressure loss.
Change Of Water Supply
The changing or alternating from one water supply to another can have a detrimental effect on the
operation and/or life expectation of the water heater storage unit, pressure temperature relief valve and
heating unit.
Where there is a changeover from one water supply to another, e.g. a rainwater tank supply, bore water
supply, desalinated water supply, public reticulated water supply or water brought in from another supply,
then water chemistry information should be sought from the supplier or it should be tested to ensure the
water supply meets the requirements given in these guidelines for the Joule warranty to apply.
A high static (no flow) mains pressure is no guarantee of good
flow availability. In a domestic installation 1.5bar and 25ltr/
min should be regarded as the minimum. The maximum mains
pressure that the inlet control set can cope with is 10bar.

UK Manufactured Unvented Hot Water Cylinder Installation Guide 11
Water Chemistry
This water heater must be installed in accordance with this advice to be covered by the Joule warranty.
This water heater is manufactured to suit the water conditions of most public reticulated water supplies.
However, there are some known water chemistries which can have detrimental effects on the water heater
and its operation and/or life expectancy. If you are unsure of your water chemistry, you may be able to obtain
information from your local water supply authority. We recommend not to use water soener, however if it is
used the water is required to be kept at potable standards. This water heater should only be connected to a
water supply which complies with these guidelines for the JOULE warranty to apply.
Water Chemistry Levels Affecting Warranty
The JOULE warranty of this water heater will not cover resultant faults on components including the storage
unit where water stored in the storage unit exceeds at any time any of the following levels:
Components Maximum Permitted Levels
Total Dissolved Solids 600 mg/litre
Total Hardness 200 mg/litre
Chloride 300 mg/litre
Magnesium 10 mg/litre
Calcium 20 mg/litre
Sodium 150 mg/litre
Iron 1 mg/litre
Maximum pH 9.5
Minimum pH 6.5

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Total Dissolved Solids (TDS)
Some water analysis reports may state the conductivity of the water rather than the level of total dissolved
solids. Conductivity, measured in microsiemens per centimetre (μS/cm), is directly proportional to the TDS
con- tent of the water. TDS, in mg/L, is approximately 70% of the conductivity in μS/cm.
The JOULE warranty will not cover resultant faults to the storage unit if this water heater is connected at
anytime to a water supply where the TDS content of the water exceeds 600 mg/L. 16 In locations where TDS
approaches 600 mg/L, e.g. due to sediment, we strongly recommend fitting an appropriate filter to ensure
water entering or in the water heater does not exceed this level at any time i.e. due to sediment build up.
Features Of The Joule DHW
Made from Duplex Stainless Steel for excellent corrosion resistance.
• Strong rust-proofed steel case.
• Insulation is by means of an approved CFC/HCFC free polyurethane foam with an ozone depletion
factor of zero.
• Available in a variety of sizes to suit - 90L, 120L, 150L, 180L, 210L, 250L and 300 litres.
• All models including Solar models are available in Twin coil versions supplied complete with all the
necessary safety and control devices needed to connect to cold water mains
• All safety and control devices are pre-set.
• High quality controls selected that combine high flow rate performance with minimum pressure drop
which gives fantastic performance in all areas, with great improvements in areas with poor water pres-
sure.
Nameplate and symbols on the product
Important information about your unit can be found on a rating plate as well as other symbols located on
the product.

UK Manufactured Unvented Hot Water Cylinder Installation Guide 13
The Type Plate
The Type Plate provides information about the unit. The Type Plate is located in two places on and in the
Joule DHW unit shown:
Joule DHW Type Plate:
Article Number
Indicates the exact model version of that specific unit

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CE MARKING
ThisistheCE logowithwhichJouleindicatesthattheproductmeets the legalrequirements.
FOR INDOOR USE ONLY
This symbol indicates that the Joule DHW may only be used indoors.
READ THE MANUAL
This symbol indicates to the user that the manual should be consulted.
WEEE MARKING
This symbol indicates that the product must not be disposed of with household waste.
The product must be collected separately.
LOGO MATERIAL CODE PP
This logo is applied to the housing and indicates the use of polypropylene.
LOGO MATERIAL CODE ABS
This logo is applied to the housing and indicates the use of ABS.
Serial Number
This is a unique number specific to the unit that can be used to identify the Joule DHW during installation or
maintenance.
QR Code
A QR code is placed on the inside of the Joule DHW. The digital warranty card can be filled in by scanning
the QR code. This is then automatically sent to Joule and the installer.
Version
The design/manufacturing version
Symbols
The symbols on the Type Plate and on the Joule DHW mean the following:

UK Manufactured Unvented Hot Water Cylinder Installation Guide 15
Joule DHW Dimensions
The dimensions covering the Joule
DHW configuration is shown below:
DIMENSIONS AND WEIGHT
Height (x) mm 1375 1605 1860
Width mm 584 584 584
Depth mm 624 6124 624
Weight kg 55 58 63
CONNECTIONS
Air inlet/outlet mm 150/160/200 150/160/200 150/160/200
Hot water outlet Inch ¾” ¾” ¾”
T&P Inch ½” ½” ½”
Cold water inlet Inch ¾” ¾” ¾”
Coil connections Inch - - ¾”
Condensate drain Inch ¾” ¾” ¾”
JOULE SOLUTIONS
ECOHEAT STANDARD
FOOTPRINT DRAWING
584mm
624mm
1000mm
1000mm
624mm
100mm
Xmm
X
JOULE SOLUTIONS
ECOHEAT STANDARD
FOOTPRINT DRAWING
584mm
624mm
1000mm
1000mm
624mm
100mm
Xmm
X

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Technical Specification
SPECIFICATIONS UNIT Model Type
Joule DHW 160 Joule DHW 200 Joule DHW 260
PRODUCT CODE HHEH-
ECOH-H160
HHEH-
ECOH-H200
HHEH-
ECOH-H260
Mains connection
P+N230V
~50Hz
±6%”
P+N230V
~50Hz
±6%”
P+N230V
~50Hz
±6%”
Fuse A16 16 16
Max. power consumption heat
pump W496 - 600 496 - 600 496 - 600
Max. output heat pump W1100 - 1841 1100 - 1841 1100 - 1841
Outdoor Air Temp Range °C -5/35 -5/35 -5/35
Max. power consumption DHW
Tank element W1500 1500 1500X
Average electrical consumption
power heat pump W496 - 600 496 - 600 496 - 600
IP Class X2 X2 X2
Max. working pressure bar 666
Cord type 3 core cableflex
(1.5 m)
3 core cableflex
(1.5 m)
3 core cableflex
(1.5 m)
PERFORMANCE
Max. water temp. HP/
HP+Immersion °C 55/70 55/70 55/70
Energy Efficiency Class AAA
Load Profile L L XL
SCOP(14°C) 2.8 3.1 3.0
REFRIGERANT
Refrigerant Type R134a R134a R134a
Refrigerant content g580 580 580
GWP Value 1430 1430 1430
C02 equivalent kg 830 830 830

UK Manufactured Unvented Hot Water Cylinder Installation Guide 17
INSTALLATION ROOM
Max. permissible air humidity
installation room rH 85% 85% 85%
Max. allowed temperature oC35 35 35
Min. allowed temperature oC10 10 10
CONNECTIONS
Air inlet/outlet mm 150/160/200 150/160/200 150/160/200
Hot water outlet Inch ¾” ¾” ¾”
T&P Inch ½” ½” ½”
Cold water inlet Inch ¾” ¾” ¾”
Coil connections Inch - - ¾”
Condensate drain Inch ¾” ¾” ¾”
VENTILATION
Air flow rate m3/h 350 350 350
Max. pressure drop Pa 70 70 70
Low setting (set value) m3/h 50 - 350 50 - 350 50 - 350

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Pre-Installation Notes
• Always store the Joule DHW vertically
• Store the manual in a safe place in order to be able to use it as reference aer installation. For maximum
safety installers should always read the following warnings carefully.
• Store the provided manual in a safe location with the end user aer installation and remember to hand
it over to the new end user if the Heat Pump & Tank unit is sold or transferred.
• Only remove the device from the box at the installation site. Secure the device against falling.
• The Joule DHW is compliant with the requirements of the Low Voltage Directive (2014/35/ EU), the
EMC Directive (2014/30/EU) and the pressure equipment directive (2014/68/EU).
• The manufacturers shall not be responsible for damage originating from unauthorised changes or the
improper connection of electric and hydraulic lines.
• Do not use units if you see some damage on them and notice something untoward such as loud noise,
smell or burning.
• In order to prevent electric shocks, fires or injuries, always stop the unit, disable the protection switch
and contact Joule’s technical support if the unit produces smoke, if the power cable is hot or damaged,
or if the unit is very noisy.
• Handle electrical appliances with care. Never touch the device with wet hands, never touch the device
when you are barefoot.
• Always remember to inspect the unit, electric connections, refrigerant tubes and protections regularly.
These operations shall be performed by qualified personnel only.
• The unit contains moving parts and electrical parts which should always be kept out of the reach of
children.
• Unauthorised personnel should not attempt to repair, move, alter or reinstall the unit. These operations
may cause product damage, electric shock and fires.
• Do not place containers with liquids or other objects on the unit.
• Under no circumstances must the compressor block be opened or damaged.
• All the materials used for the manufacture and packaging of the Exhaust Air heat pump are recyclable.
The packaging material and exhausted batteries of the remote controller (optional) must be disposed
of in accordance with local regulations.
• The Joule DHW contains a refrigerant and must be disposed in an authorised centre or returned to the
retailer as special waste.

UK Manufactured Unvented Hot Water Cylinder Installation Guide 19
• To avoid your hands being injured by the edge of the parts wear protective gloves to unpack, move,
install, and service the unit. Do not touch the internal parts (water pipes, refrigerant pipes, heat
exchangers, etc) while running the units. If you need to adjust and touch the units, allow sufficient time
for the unit to cool and be sure to wear suitable personal protective equipment.
• In case of a refrigerant leakage, try to avoid contact with the refrigerant as this could result in serious
injury.
• It is only permitted to install the Joule DHW in a room that is free of frost.

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First Fix Notes
Primary Pipework from Heat Pump
• The pipework should be fully insulated and protected from water and moisture.
• The supplied flexible hose should be used for piping the condense outlet only, providing a suitable air
gap to the drain connection.
• The ducting should be adequately insulated to mitigate any moisture build up.
Electrical Supply and Cable Requirements
• The heat pump is supplied with a 1.5 metre supply cord. Ensure the mains supply connection is
made through a suitable isolator switch that can provide disconnection of all poles, with a minimum
separation of 3mm.
• Power supply to heat pump to be terminated with a suitable isolator located next to the unit.
• Tank Immersion maximum allowed output of 3kW, connection of immersion with greater power draw
will cause irreparable damage to Heat Pump controller board.
• When installing the Heat Pump take great care to install as per the detailed notes for installation
locations. The Heat Pump must have minimum clearance of 300mm at the top and 500mm to the front
of the unit.
• The Heat Pump must not be installed in a location without these clearances available.
• Condensation will form inside the Heat Pump during normal operation, this is normal. Ensure the
correct pipework is used and that it has a continuous fall to the drain connection. An adequate air gap
is also required to allow the water to drain correctly.
• The Heat Pump must be installed vertically and be plumb and level.
Tank Immersions connected to the Joule DHW must
have a power input of 3kW or less