Dimplex ECS150HP40A-580, ECS210HP40A-580, ECS250HP40A-580 Installation And User Instructions Manual
Important - This Manual Must Be Left With The User After
Installation!
EC-Eau Cylinder Range
Installation and User Instructions
A Class Heat Pump Cylinders
Up to 250L
A Class HP Installation a
nd User Instructions R02583
-13 05/17
Page
2
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’
All Glen Dimplex cylinders are certified by KIWA, for further information on this regulation body please refer
to the KIWA website www.kiwa.co.uk’
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.
Overall View
A Class HP Installation a
nd User
Instructions R02583
-13 05/17
Page
3
0 Overall View
Figure 1: Overall View of A Class Heat Pump Cylinder Installation Process
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02
03
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Contents
A Class HP Installation a
nd User Instructions R02583
-13 05/17
Page
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1 Contents
0 Overall View ............................................................................................................. 3
1 Contents ................................................................................................................... 4
2 Introduction ............................................................................................................. 7
3 Scope of Delivery ..................................................................................................... 7
4 Pre-Installation Advice ............................................................................................. 8
4.1 Risk Assessment ..................................................................................................8
4.2 Siting Considerations ............................................................................................8
4.3 Cold Water Supply ................................................................................................9
4.4 Building Regulation G3 Discharge Requirements .......................................................9
4.4.1 Discharge Pipe D2 ..........................................................................................9
4.4.2 Worked Example .......................................................................................... 11
4.4.3 Termination of Discharge Pipe ....................................................................... 11
4.5 Limitations ........................................................................................................ 11
5 Installation ............................................................................................................ 12
5.1 Cold Water Inlet with Inlet Control Group .............................................................. 12
5.1.1 Correctly Site the Cylinder ............................................................................ 12
5.1.2 Install the Inlet Group .................................................................................. 12
5.1.3 Expansion Vessel ......................................................................................... 12
5.1.4 Balanced Cold Water Supply .......................................................................... 12
5.1.5 Drain Valve ................................................................................................. 12
5.2 Hot Water Outlet ................................................................................................ 13
5.2.1 Thermostatic Mixing Valve ............................................................................ 13
5.2.2 Pipe Insulation ............................................................................................ 13
5.3 Discharge Pipes from Safety Devices ..................................................................... 13
5.3.1 Discharge Pipe D1 ........................................................................................ 13
5.3.2 Discharge Pipe D2 ........................................................................................ 13
5.3.3 Tundish ...................................................................................................... 13
5.4 HP Flow to Buffer Connection ............................................................................... 13
5.5 Buffer Flow to HP Connection ............................................................................... 13
5.6 Coil Return Connections ...................................................................................... 14
5.7 Coil Flow Connections ......................................................................................... 14
5.8.1 Temperature Sensor Connection .................................................................... 16
5.9 Water Module Wiring ........................................................................................... 19
5.9.1 Primary Electrical Connections ....................................................................... 19
5.9.2 Modbus Connection ...................................................................................... 20
5.9.3 Zone Connections ........................................................................................ 20
5.9.4 Digital Inputs & Temperature Sensors ............................................................ 21
5.10 Bivalent System ................................................................................................. 23
5.11 Connection of Secondary Return ........................................................................... 23
6 Commissioning ....................................................................................................... 24
Contents
A Class HP Installation a
nd User Instructions R02583
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7 Maintenance ........................................................................................................... 25
8 Spare Parts ............................................................................................................ 26
9 Technical Data and Product Fiche ........................................................................... 27
9.1 A Class Heat Pump Buffer Range .......................................................................... 27
9.2 Cylinder Heat Exchanger Pressure Drop ................................................................. 30
9.3 Cylinder Attainable Temperature .......................................................................... 31
10 User Instructions................................................................................................ 31
10.1 General ............................................................................................................. 31
10.2 Operation .......................................................................................................... 31
10.3 Water Temperature Direct Electric Heating ............................................................ 31
10.4 Maintenance ...................................................................................................... 32
10.5 Troubleshooting ................................................................................................. 32
Scope of Delivery
A Class HP Installation a
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Precaution: 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 understanding the hazards
involved. Children shall not play with the
appliance. Cleaning and user
maintenance shall not be made by
children without supervision.
Note: Between the inlet group and
the cold water inlet on the cylinder
NO isolating device may be fitted, as
by doing so important safety devices
could be isolated!
It is important to check the precharge pressure of the expansion
vessel membrane before filling the
cylinder. This has been factory set
to 3 bar. The pre-charge should be
greater than or equal to 3 bar.
It is important that the tundish is
positioned away from any electrical
components.
Note: Means for electrical
disconnection must be incorporated
in the fixed wiring in accordance
with the wiring rules.
Before removing the cover from the
immersion heater isolate appliance
using isolating switch! Danger of
electrical shock! Only use suitable
electrically insulated equipment
when working inside immersion
housing.
The maintenance of this
appliance must be carried out by
a suitably qualified person only.
It is recommended to maintain
the unit on an annual basis.
Isolate all electrical supplies
from the unit before commencing
work. Danger of electrical shock!
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.
Temperature setting: A high level
cutout is fitted to the product for
each heat source. This should never
activate under normal operation.
The maximum possible cylinder
temperature attainable by the heat
pump is 65°C as set on the User
Interface. The back-up immersion
heater can produce up to 72°C at its
maximum setting, i.e. 5. For
convenience the immersion heater
is preset to produce 60°C.
If an electronic copy of this manual
should be required, please contact the
manufacturer at the address at the back
of this manual.
Scope of Delivery
A Class HP Installation a
nd User Instructions R02583
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2 Introduction
Thank you for choosing a Dimplex product.
The EC-Eau heat pump cylinders are
specified with large, high surface area
heat exchangers, specifically sized to
match the requirements of Dimplex “A”
Class Heat Pumps. 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.
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.
For more detailed information on product
features, please see the Technical Data
section in this manual.
3 Scope 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.
Table 1: Scope of Delivery for A Class Heat Pump Cylinders
* These items are supplied factory fitted
** Supplied with Dimplex heat pump hydraulic pack
Pre-Installation
A Class HP Installation a
nd User Instructions R02583
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4 Pre-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 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 system
frost protection
The heat pump cylinder range is 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.
Pre-Installation
A Class HP Installation a
nd User Instructions R02583
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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.
Dimplex recommend an annual maintenance
inspection is carried out on the domestic hot
water cylinder. In hard water areas this should
include inspection of the heat exchanger and
immersion heater, [above 120ppm or 120mg/l].
A local water treatment company should be able
to offer free water quality testing. The heating
elements may require periodic de-scaling. The
installer should do this as part of a maintenance
agreement.
If required, precautions can be taken to minimise
effects of water hardness, i.e. installation of
water conditioner or water softener. These
devices should be installed in hard water areas
where high water storage temperatures are
required, i.e. greater than 60°C storage
temperatures, particularly when water hardness
exceeds 200ppm. Should the water cylinder
require de-scaling, this must be performed by a
qualified technician.
4.4 Building Regulation G3 Discharge
Requirements
As part of the requirements of Building
Regulation G3 any discharge from an unvented
system should be conveyed to where it is visible,
but will not cause danger to persons in or about
the building. The tundish and the discharge pipes
should be fitted in accordance with the
requirements of Building Regulation approved
document G3, (England and Wales), Part P of
Northern Ireland and Standard 4.9 of Scotland.
4.4.1 Discharge Pipe D2
The discharge pipe (D2) from the Tundish
should:
“have a vertical section of pipe at least
300mm long below the tundish before any
elbows or bends in the pipework and be
installed with a continuous fall of at least 1
in 200 thereafter.”
The discharge pipe (D2) should be made of:
“metal; or other material that has been
demonstrated to be capable of safely
withstanding temperatures of the water
discharged and is clearly and permanently
marked to identify the product and
performance standard.”
Dimplex strongly recommends the use of metal
pipework only and Dimplex does not take
responsibility for any damage caused from
discharges.
The discharge pipe d2 should be at least one pipe
size larger than the nominal outlet size of the
safety device unless its total equivalent hydraulic
resistance exceeds that of a straight pipe 9m
long, i.e. For discharge pipes between 9m and
18m the equivalent resistance length should be
at least two sizes larger than the nominal outlet
size of the safety device; between 18 and 27m
at least 3 sizes larger, and so on; bends must be
taken into account in calculating the flow
resistance. See Figure 2: Typical Discharge Pipe
ArrangementFigure 2, Table 2 and the worked
example.
Note: An alternative approach for sizing
discharge pipes would be to follow Annex D,
section D.2 of BS 6700:2006 + A1:2009).
Pre-Installation
HP Installation and User Instructions R00918
-6 01/13
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Figure 2: Typical Discharge Pipe Arrangement
Table 2: Sizing of Copper Discharge Pipe “D2” for Common Temperature Relief Valve Outlet Sizes
Pre-Installation
A Class HP
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nd User Instructions R02583
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4.4.2 Worked Example
This example is for a G½ temperature relief valve
with a discharge pipe (D2) (as fitted on 125 to
300L cylinders) having 4 No. 22mm elbows and
length of 7m from the tundish to the point of
discharge.
From Table 2, the maximum resistance allowed
for a straight length of 22mm copper discharge
pipe
(D2) from a G½ temperature relief valve is 9.0m.
Subtract the resistance for 4 No. 22mm elbows
at 0.8m each = 3.2m.
Therefore the maximum permitted length
equates to 5.8m, which is less than the actual
length of 7m, therefore calculate the next largest
size.
Maximum resistance allowed for a straight length
of 28mm copper discharge pipe (D2) from a G½
temperature relief valve is: 18m
Subtract the resistance for 4 No. 28mm elbows
at 1.0m each = 4m
Therefore the maximum permitted length
equates to 14m.
As the actual length is 7m, a 28mm (D2) copper
pipe will be satisfactory.
Where a single common discharge pipe
serves more than one system, it should be
at least one pipe size larger than the largest
individual discharge pipe (D2) to be
connected.
The discharge pipe should not be connected
to a soil discharge stack unless the soil
discharge stack is capable of safely
withstanding temperatures of the water
discharged, in which case, it should:
contain a mechanical seal, which allows
water into the branch pipe without allowing
foul air from the drain to be ventilated
through the tundish.
there should be a separate branch pipe with
no sanitary appliances connected to it.
if plastic pipes are used as branch pipes
carrying discharge from a safety device,
they should be either polybutalene (PB) or
cross-linked polyethylene (PE-X) complying
with national standards.
be continuously marked with a warning that
no sanitary appliances should be connected
to the pipe.
4.4.3 Termination of Discharge Pipe
“The discharge pipe (D2) from the tundish
should terminate in a safe place where there
is no risk to persons in the vicinity of the
discharge.”
Examples of acceptable discharge arrangements
are:
“to a trapped gully with the end of the pipe
below a fixed grating and above the water
seal;
downward discharges at low level; i.e. up to
100mm above external surfaces such as car
parks, hard standings, grassed areas etc.
are acceptable providing that a wire cage or
similar guard is positioned to prevent
contact, whilst maintaining visibility; and,
discharges at high level: e.g. into a metal
hopper and metal downpipe with the end of
the discharge pipe clearly visible or onto a
roof capable of withstanding high
temperature discharges of water and 3m
from any plastic guttering system that would
collect such discharges.”
Note: As the discharge would consist of
high temperature water and steam, asphalt,
roofing felt and non-metallic rainwater
goods may be damaged by such discharges.
4.5 Limitations
The heat pump must be specified correctly,
to ensure it is compatible with the model of
cylinder installed. This is to prevent the heat
pump malfunctioning when preparing
domestic hot water.
The heat exchangers in this range of
cylinders have been specifically designed for
heat pump applications. Great care must be
taken if using these cylinders with other heat
sources, due to the heat exchange capacity
of the product.
Installation
A Class HP Installation a
nd User Instructions R02583
-13 05/17
Page
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5 Installation
5.1 Cold Water Inlet with Inlet Control
Group
5.1.1 Correctly Site the Cylinder
Install the cylinder in an appropriate location,
ensuring all of the recommendations have been
considered (see chapter 4.2).
5.1.2 Install the Inlet Group
The inlet group regulates the pressure of the
incoming mains water supply to the cylinder and
removes any debris that might be water borne.
Note: Between the inlet group and the cold
water inlet on the cylinder NO isolating
device may be fitted, as by doing so
important safety devices could be isolated!
5.1.3 Expansion Vessel
The expansion vessel is mandatory on all EC-Eau
cylinders and can be connected directly to the
cold water inlet group, utilising the flexible hose
supplied with the vessel. The expansion vessel
should always be fitted in accordance with the
manufacturer’s instructions. Isolating device/s
must not be fitted between the water cylinder,
the expansion vessel and the cold water inlet
group.
Furthermore, it is recommended to mount the
vessel higher than the cylinder to avoid having
to drain the cylinder when maintaining and
replacing the expansion vessel.
Figure 3: Connection Of The Expansion Vessel To The
Inlet Group
It is important to check the pre-charge
pressure of the expansion vessel
membrane before filling the cylinder. This
has been factory set to 3 bar. The precharge should be greater than or equal to
3bar.
Note: The expansion vessel must be
installed to the side of the expansion relief
valve on the inlet group. To do this the
blanking plug must be removed and the
expansion vessel connected, as shown in
Figure 4.
Figure 4: Detail Showing The Connection Of The
Expansion Vessel To The Inlet Group
5.1.4 Balanced Cold Water Supply
If a balanced cold water supply is required
(recommended) a connection can be taken from
the bottom of the inlet group.
5.1.5 Drain Valve
It is also recommended to install a drain valve in
the lowest point of the cold water feed to the
cylinder. This allows the cylinder to be drained in
a controlled manner should this become
necessary.
Expansion
Vessel
Connection
Balanced
Cold Water
Supply
Expansion
Relief
Valve
Cold
Water to
Cylinder
Cold
Water
from
Mains
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