Dimplex ECSd125-580 Guide

Important - This manual must be left with the user after Installation!
EC-Eau Cylinder Range
Installation and User Instructions
Direct Electric and
Indirect Cylinders
Up to 300L

Installation and User Instructions R01127-10 01/16 Page 2
Dimplex is a licensed member of the Benchmark Scheme which aims to improve
the standards of installation and commissioning of domestic heating and hot
water systems in the UK and to encourage regular servicing to optimise safety,
efficiency and performance.
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 for more information.
The HWA Charter requires that all members adhere to the following:
supply fit for purpose products clearly and honestly described
supply products that meet, or exceed appropriate standards and
building and water regulations
provide pre and post sales technical support
provide clear and concise warranty details to customers
For further information on the HWA Charter Membership, please refer to the
HWA website www.hotwater.org.uk’

Overall View
Installation and User Instructions R01127-10 01/16 Page 3
0Overall View
Figure 1: Overall view of Direct Electric Cylinder Installation Process
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Overall View
Installation and User Instructions R01127-10 01/16 Page 4
Figure 2: Overall view of Indirect Cylinder Installation Process
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Installation and User Instructions R01127-10 01/16 Page 5
Contents
1Contents
0Overall View ...............................................................................................3
1Contents ....................................................................................................5
2Introduction ...............................................................................................7
3Scope of delivery ........................................................................................7
4Pre-Installation Advice .................................................................................9
4.1 Risk assessment ......................................................................................9
4.2 Siting considerations ................................................................................9
4.3 Cold water supply ..................................................................................10
4.4 Building regulation G3 Discharge requirements ..........................................11
4.4.1 Discharge pipe D2............................................................................12
4.4.2 Worked example..............................................................................13
4.4.3 Termination of discharge pipe ...........................................................14
4.5 Limitations ............................................................................................15
5Installation...............................................................................................15
5.1 Cold Water Inlet with Inlet Control Group..................................................15
5.1.1 Correctly site the cylinder .................................................................15
5.1.2 Install the inlet group.......................................................................15
5.1.3 Expansion vessel .............................................................................15
5.1.4 Balanced cold water supply ...............................................................16
5.1.5 Drain valve .....................................................................................16
5.2 Hot Water Outlet....................................................................................16
5.2.1 Thermostatic mixing valve ................................................................16
5.2.2 Pipe insulation.................................................................................16
5.3 Discharge pipes from safety devices .........................................................16
5.3.1 Discharge pipe D1............................................................................16
5.3.2 Discharge pipe D2............................................................................17
5.3.3 Tundish ..........................................................................................17
5.4 Immersion heater ..................................................................................18
5.5 Coil flow connections (indirect models only) ..............................................18
5.6 Coil return connections (indirect models only) ...........................................18
5.7 Thermostat connection (indirect models only)............................................19
5.8 Connection of Secondary Return ..............................................................22
6Commissioning .........................................................................................23
7Maintenance .............................................................................................24
8Spare Parts ..............................................................................................26
9Technical Data and Product Fiche ................................................................27
9.1 Cylinder heat exchanger pressure drop .....................................................33

Installation and User Instructions R01127-10 01/16 Page 6
Contents
10 User Instructions.......................................................................................34
10.1 General .............................................................................................34
10.2 Operation ..........................................................................................35
10.2.1Water temperature direct electric heating ...........................................35
10.2.2Water temperature auxiliary heating ..................................................36
10.3 Maintenance.......................................................................................36
10.4 Troubleshooting..................................................................................37

Scope of Delivery
Installation and User Instructions R01127-10 01/16 Page 7
2Introduction
Thank you for choosing a Dimplex
product. The EC-Eau direct electric and
indirect cylinders are specified with
high quality, long-life immersion
heaters and large surface area coils for
fast reheat times. They boast 60mm of
low GWP insulation foam, together with
100% recyclable stainless steel inner
components and a sleek black, hard
wearing outer shell manufactured from
completely recycled materials. For
more detailed information on product
features, please see the Technical Data
section in this manual.
NOTE: This product has been designed
specifically for the purpose of
delivering heated, domestic and
sanitary hot water as part of a
pressurised water heating system. The
package is provided with fittings that
comply with Section G3 of Building
Regulations.
WARNING: Dimplex cannot take
responsibility for ensuring safe
operation of the appliance outside
of the scope of intended use.ly
3Scope of delivery
Please ensure you check the scope of
delivery below before signing any
delivery documentation. Claims for
missing or damaged parts after signing
for the delivery will not be accepted.
* These items are supplied factory
fitted
Table 1: Scope of Delivery for Direct
Electric Cylinders
Table 2: Scope of Delivery Direct Cylinders

Installation and User Instructions R01127-10 01/16 Page 8
Scope of Delivery
* These items are supplied factory fitted
Table 3: Scope of Delivery for Indirect Cylinders

Installation and User Instructions R01127-10 01/16 Page 9
Pre-Installation
4Pre-Installation
Advice
Please read the following section
carefully before commencing
installation. If in any doubt, please call
the appropriate help desk.
Disregarding the instructions given in
this manual in its entirety and any
relevant regulations, standards and
codes of practice will void the
guarantee of this product.
Handling –depending on the size of
the unit and access to its installation
location, consideration must be given
to the handling of the unit. Please note
that handling, installation and use of
this product is subject to the Health
and Safety at Work Act.
If the unit is not installed immediately,
it should remain in its protective
packaging with all pipe protectors/end
caps applied to prevent damage and
dirt deposit inside the cylinder and the
coils.
Pipe work –the pipe runs should be
executed as short as possible, unused
pipe work should be removed and all
remaining pipe work should be lagged
in accordance with regulatory
requirements to prevent heat loss and
the formation of condensation.
Taps and fittings –all taps and
fittings incorporated in the unvented
system should have a rated operating
pressure of 0.6 MPa (6 bar) or above.
4.1 Risk assessment
The compilation of a risk assessment is
strongly recommended before
installing the product. The following
areas require particular consideration
in addition to the information required
by the Health and Safety at Work Act.
- scalding: where appropriate or
required by law a thermostatic
mixing valve is to be fitted to the hot
water outlet of the cylinder (see also
water borne organisms).
- explosion: the unit is fully equipped
with all relevant safety equipment to
comply with current regulations. The
correct design and function has been
verified by independent third party
testing. The correct application
thereof is the responsibility of the
competent installer.
- water borne organisms (i.e.
Legionella): if applicable a risk
assessment should be carried out
following the recommendations
outlined in the Approved Code of
Practice L8.
- the user preference must be
considered when commissioning the
system, in particular when adjusting
the solar and auxiliary system
temperature and timer settings.
4.2 Siting considerations
When choosing a suitable location for
the cylinder the following aspects
should be considered:
- structural integrity
- access for installation, operation,
maintenance and replacement
- routing of discharge pipe work
- access to water mains supply, hot
and cold water distribution pipe work
- access to suitable electricity supply
- location in relation to remaining
system components such as
auxiliary and solar heating system

Installation and User Instructions R01127-10 01/16 Page 10
Pre-Installation
- frost protection
The direct electric and indirect cylinder
ranges are designed to be floor
standing, vertically mounted, indoors
and in a frost free environment. The
cylinder may be located on any flat and
level surface, provided it is sufficiently
robust to support the weight of the
cylinder when full of water (please see
technical data) and suitably accessible
for replacement/maintenance without
specialist tools or lifting equipment as
this will void the warranty conditions.
The position and orientation of the
cylinder should be such that easy
access is provided for servicing the
controls. A minimum distance of
400mm in front of the immersion is
recommended, to allow the
replacement of the immersion heater
should the need arise. When installing
the cylinder all labels should be clearly
visible and ensure that no pipework
hinders any work to be carried out on
the various cylinder components.
Particular care must be taken when
placing the cylinder in a garage or
outbuilding. All exposed pipe work
must be correctly insulated to avoid
frost damage.
CLEANING INSTRUCTIONS:
Clean outer cladding of
cylinder with a soft cloth
dampened with warm water
only. Do not use abrasive or
aggressive cleaning
materials, such as alcohol or
petroleum based solvents, as
this may damage the surface
of the product.
4.3 Cold water supply
For satisfactory and safe performance
of the unvented cylinder the water
supply must meet the following
criteria:
Minimum dynamic
pressure
150 kPa
(1.5 bar)
Maximum inlet supply
pressure
1200 kPa
(12 bar)
Minimum flow rate
15 l/min
Max. chlorine content
250mg/L
Max. water hardness
200mg/L
The following instructions have to be
followed when installing the cold water
mains supply to the cylinder:
- The cold water supply to the cylinder
must come directly from the cold
water mains after the mains stop
valve to the property.
- The cold water inlet pipe work should
have at least an inside diameter of
19mm and should meet the
requirements of the water
regulations for the supply of
wholesome water.