Dimplex SCx175sd, SCx215sd, SCx255sd, SCx175si, SCx305sd Installation And Operation Manual

SOLAR

UNVENTED WATER HEATERS

Installation and Operation Manual

Important -This Manual Should Be Left With The Cylinder After Installation

2

Contents

Section Page

1 Introduction 3
2 Technical specifications 3
3 Check list 5
4 General requirements 5

5 Primary circuit installation 6
6 Secondary circuit installation 6
7 Discharge arrangement 8
8 Electrical installation 10
9 Filling and commissioning 11
10 Servicing and maintenance 12
11 Fault finding 13
12 User instructions 13
13 Warranty 14
14 Part Numbers 15
15 Service Record 16

3

1. Introduction

The SCX Solar cylinder is a high quality stainless steel unvented cylinder designed for use with all
solar systems to provide hot water from a cold mains water supply of between 3bar and 12bar.
Reduced performance is available at lower pressures but the units are not suitable for pressures
lower than 1.5bar and flow rate of less than 20 litres per minute. The indirect heat exchange surfaces
are designed to provide a rapid heat up time. The unit comes complete with all the necessary safety
equipment to comply with legislation governing the installation of such systems.

1.1 Cylinder Suitability:

The

SCX Solar cylinder should only be used as part of a solar installation and configured as shown in

figure 1.2. Additional safety devices may be required if the cylinder is operated with other heat sources.

2. Technical Specifications

Model Number SCx175sd SCx215sd SCx255sd SCx305sd SCx175si SCx215si SCx255si SCx305si

Storage capacity (litres)

175 215 255 305 175 215 255 305

Cylinder diameter (mm)

574 574 574 574 574 574 574 574

Aux Water volume (l)

90 130 170 215 105 140 180 230

Overall height (mm)

1300 1542 1809 2085 1300 1542 1809 2085

T&P Valve (mm)

1080 1322 1589 1865 1080 1322 1589 1865

Lower Immersion (mm)

593 593 593 593 593 593 593 593

Top Immersion (mm)

908 1150 1417 1693 - - - -

Solar Flow (mm)

542 542 542 542 542 542 542 542

Solar Return (mm)

380 380 380 380 380 380 380 380

Cold Inlet (mm)

300 300 300 300 300 300 300 300

solar Coil size sqm

1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1

Aux Coil size sqm

- - - - 0.75 0.75 0.75 0.75

Auxiliary Flow (mm)

- - - - 904 904 904 904

Auxiliary Re turn (mm)

- - - - 742 742 742 742

Weight when full (kg)

219 267 314 374 223 271 318 378

Heat-up time* (m)

20 24 28.5 34 18 21.5 25 30

Re-heat time* (m)

14 17 20 24 13 16 19 22

Heat Loss in 24hr (kw)

1.78 2.19 2.31 2.51 1.78 2.19 2.31 2.51

Secondary Return •• ••••• •
Primary flow/return connections (mm)

22 22 22 22 22 22 22 22

Cold feed/hot draw off connections (mm)

22 22 22 22 22 22 22 22

Maximum water supply pressure (bar)

12 12 12 12 12 12 12 12

System operating pressure (pre-set) (bar)

33 333333

Expansion vessel charge pressure (bar)

33 333333

Maximum primary working pressure (bar)

33 333333

Package includes:

Expansion vessel ltr 18 18 25 25 18 18 25 25
Inlet Valve Group (pressure reducing valve, non
return valve, 6 bar expansion relief valve, line

•• ••••• •

T/P valve 7bar 90degC (factory fitted) •

•••

•

••

•

15mm to 22mm Tundish •

•••

•

••

•

22mm motorised valve −

−−−

•

••

•

Control/limit thermostat box

•

•••

•

••

•

Immersion heater 2

222

1

11

1

2.1 Heat-up & Reheat Times*

*Heat-up and reheat times are for a guide only and are based on a primary flow temperature of 60oC
and heating water from 15

o

C to 60oC. The immersion of the cylinder or external boiler must be used

to raise the temperature to 60

o

C from the maximum temperature achieved at any time by the solar
system,.
Reheat times are those to heat 70% of the cylinder from cold.

4

2.2 Connection

2.2.1 SOLAR Indirect

2.2.2 Single Coil Direct Electric

5

3. Check List

• Cylinder

• 18 litre Expansion Vessel

• 25litre Expansion vessel

• Expansion vessel bracket

• 22mm Inlet group (Pressure reducing valve, Expansion relief valve, non-return valve, line

strainer

• ½” T/P valve, 7bar/90

o

C factory fitted

• 15/22mm Tundish

• 2 x Twin Thermostat (Indirect cylinders only)

• Immersion heater

• 1x 22mm two-port Motorised Valve (Indirect cylinders only)

4. General requirements

4.1. The solar domestic hot water cylinder MUST be installed by a competent person in accordance

with section G3 of the current Building Regulations and any other regulations in force at the time of
installation.

4.2. It is essential to read and understand these instructions, unpack and familiarise yourself with the
equipment before commencing the installation. Failure to observe these installation instructions could
invalidate the warranty.

4.3. Water supply – The water supply to the cylinder should be potable water direct from a public
mains water supply with any water treatment equipment functioning correctly.

The unit, should be fed via a 22mm diameter supply pipe direct from the mains water entry point to
the property. It requires a supply pressure of 1.5bar with a flow rate of at least 20litres per minute as a
minimum for it to function, but flow from the outlets will be low if several outlets are used
simultaneously. Correct performance is achieved with supplies between 3bar and 12bar. The cylinder
control equipment is factory set to limit the system operating pressure to 3bar. The maximum supply
pressure into the pressure-reducing valve is 12bar.

4.4. Taps and fittings - All taps and fittings incorporated in the unvented system should have a rated
operating pressure of 7bar or above.

4.5. Location – The cylinder is designed to be floor standing, vertically mounted, indoors, in a frost­free environment. When choosing a suitable location for the cylinder, consideration should be given to
the routing of the discharge pipe to a convenient safe and visible point and also the location of the
solar system.

The cylinder may stand on any flat and level surface, provided that it is sufficiently robust to support
the weight of the cylinder when full of water. (See Technical specifications for weights).

The position of the cylinder should be such that easy access is provided for servicing the controls and
replacing the immersion heater should the need arise.

Pipe runs should be made as short as possible and lagged according to current building
recommendations to prevent heat loss.

4.6. Storage and handling – If the cylinder is not being installed immediately, it should remain in its
carton with all pipe end protective caps in place to prevent damage.

6

4.7. Pipework connections – All Pipework connections to the cylinder MUST be made in accordance
with Fig 4.1, the secondary return being optional.

4.7.1 The SCX Solar unvented cylinder must be installed by a competent person with appropriate

qualifications and registration for the installation of unvented water storage heaters.

4.7.2 The cold water feed to the cylinder must be fed through the pressure reducing valve, take care

to install this in the correct direction (see arrow on side of valve) and then the pressure relief
valve, with the expansion vessel Tee’d off between the pressure relief valve and the cylinder.

4.7.3 For the single coil cylinder the immersion must be connected and suitably controlled to bring

the temperature of water to 60

o

C following heating by the solar source.

4.8 Hard Water Areas – In hard water areas it is advisable to use a water softening device to
minimise scale build-up. Periodically the immersion should be removed and scale scraped way from
the bottom of the cylinder to avoid scale surrounding the immersion and causing failure.

5. Primary circuit installation

5.1. Dimplex Solar cylinders are suitable for connecting to a solar collector system and where a twin

coil is present, to a gas or oil central heating boiler.

! Solid fuel or wood burning boilers, and gravity circulation systems MUST NOT be used on
the primary circuit of an unvented hot water system!

5.2. Systems design – The cylinder must be installed in accordance with the solar installation

instructions for connection to the primary flow and return.

5.3 Two-port Motorised valves – The SCx Solar range of cylinders must only be connected to solar
installations containing a hydraulic station with two non return valves (one in the flow to the collector
and one in the return), that will prevent thermal siphoning of the heat transfer fluid when the pump is
switched off. Where two non-return valves are not present or a hydraulic station is not used a second
twin port valve must be installed into the flow of the solar coil and wired to the lower twin-port valve.
The SCx cylinder comes with one two-port motorised valve, which should be connected in the flow to
the auxiliary coil and wired to the upper twin thermostat of the cylinder.

5.4 Solar Pump – The lower twin thermostat should be connected in-line with the solar pump power
supply.

6. Secondary circuit installation.

6.1. Connections. Secondary circuit connections MUST be made to the cylinder in accordance with

Fig 4.1/4.2. A drain cock (not supplied) should be fitted in the cold water inlet to facilitate draining of
the cylinder.

6.2. Cold water supply – Where possible, for best results, the cylinder should be fed by an
uninterrupted 22mm supply pipe into the pressure reducing valve (PR valve) with a supply pressure of
between 3 and 12bar maximum. The cylinder should not be used on any system with a supply
pressure below 1.5 bar and a flow rate of less than 20litres per minute.

6.3. Temperature and pressure relief valve – The temperature and pressure relief valve (T&P
valve) is supplied factory fitted to the cylinder. The TPV must not be removed from the cylinder or

7

tampered with in any way. The valve is pre calibrated to lift at 7bar or 90 degrees centigrade and any
attempt to adjust it will invalidate the warranty and could affect the safety performance of the unit.

6.4. Inlet Group – The inlet valve group (consisting of non-return valve; line strainer; pressure
reducing valve; and pressure relief valve) should be installed in the cold water supply to the cylinder
with the arrow pointing in the direction of water flow in accordance with Fig 4.1. This can be
connected to a supply pressure of between 1.5 and 12bar. No other valve should be fitted between
this group and the cylinder.

6.5. Expansion vessel – A suitable expansion vessel with a pre-charge pressure of 3bar is supplied
for fitting to all cylinders. The expansion vessel MUST be fitted between the expansion relief valve
and the cylinder. The expansion vessel MUST be positioned with the entry point at the bottom. The
expansion vessel should be installed using a standard t-connector ensuring no other valve is between
this and the cylinder. Adjust the pressure to 3bar

IMPORTANT: Regular checks must be carried out to ensure that the expansion vessel is correctly
pressurised to 3.5 bar at all times.

6.6. Secondary circulation – If the solar cylinder installation requires a secondary circulation circuit,
a 15mm return leg, which incorporates a check valve should be connected to the secondary return of
the cylinder See fig 4.1/4.2.

IMPORTANT: If a secondary circulation circuit is installed then a larger expansion vessel may be
required to handle the increase in water volume. Calculate the additional water volume and contact
the Dimplex customer services department regarding suitable vessel sizes.

6.7. Tundish – The tundish must not be positioned above or in close proximity of any electrical
current carrying devices or wiring. The installation should conform with the requirements of item 7
below. The Tundish must be situated within 500mm of the T&P valve outlet.

6.8 Balanced Take-off – The inlet group contains a 22mm cold wat er take off that is of the same
pressure as that of the hot water. This outlet may connected to a mixer shower for improved mixing
performance. Do not connect this balanced cold water outlet to standard cold water taps as this
reduces the water supply to the cylinder creating poor hot water flows. A check valve should be
inserted into all Balanced take off supply lines.

6.9 Safety valves – the pressure relief valve and temperature & pressure relief valve of the
unvented system are safety devices and should only be connected as described in section 7 and fig

4.1 and not be used for any other purpose.

6.10 Programmable Time Clock - A programmable time clock must be installed to turn on either
the cylinder immersion or a separate boiler at times when the solar system is ineffective (early
mornings, evenings or night time) to ensure that the water is heated to 60oC each day

8

7. Discharge arrangement.

The T&P valve may be discharged vertically into the tundish, with the pressure relief valve T’d in from
the side (see Fig 7.1 below). The Tundish must be installed in a position so that it is clearly visible by
the user. In addition, the discharge pipe from the Tundish should terminate in a safe place where
there is no risk to persons in the vicinity of the discharge, be of metal and:

Fig 7.1

(a) Be at least one pipe size larger than the normal outlet size of the safety device unless its total
equivalent hydraulic resistance exceeds that of a straight pipe 9m long, i.e. discharge pipes between
9m and 18m equivalent resistance length should be at least two sizes larger then the normal outlet
size of the safety device, between 18m and 27m at least three sizes larger and so on. Bends must be
taken into account in calculating the flow resistance. Refer to the diagram, tables and worked
example detailed in Fig 7.3.
(b) Have a vertical section of pipe at least 300mm long below the Tundish before any elbows or bends
in the Pipework.
(c) Be installed with a continuous fall.
(d) Have discharges visible at both Tundish and the final point of discharge, but where this is not
possible or practically difficult, there should be clear visibility at one or other of these locations.
Examples of acceptable discharge arrangements are:

- Ideally below a fixed grating and above the water seal in a trapped gully.

- Downward discharge at low level, i.e. up to 100mm above external surfaces such as car

parks, hard standings, grassed areas, etc. providing that where children play or otherwise
come into contact with discharges, a wire cage or similar guard is positioned to prevent
contact whilst maintaining visibility.

- Discharge at high level, e.g. into a metal hopper and metal down pipe with the end of the
discharge pipe clearly visible (Tundish visible or not) or onto a roof capable of withstanding
high temperature discharges of water and being 3m from any plastic guttering system that
would collect such discharges.

- Where a single pipe serves a number of discharges such as in blocks of flats, the number
served should be limited to not more than six systems so that any installation discharging
can be traced reasonably easily. The single common discharge pipe should be at least
one pipe size larger than the largest individual discharge pipe to be connected. If unvented
hot water stored systems are installed where discharges from safety devices may not be
apparent i.e. in dwellings occupied by blind, or disabled people, consideration should be
given to the installation of an electrically operated device to warn when discharge takes
place.

T&P Valve

Pressure
Relief Valve

15mm

15mm

15mm

22mm

Tundish

9

Warning Notice – The discharge will consist of scalding water and steam. Asphalt, roofing felt and
non-metallic rainwater goods may be damaged by such discharges.

Typical discharge pipe arrangement.

Fig 7.2

Valve outlet size Min. size of Min. size of

Max. length of Resistance created

Diameter Discharge pipe D1 Discharge pipe D2

Straight pipe by each elbow

from Tundish

Or bend

22mm

Up to 9m 0.8m

½” 15mm 28mm

Up to 18m 1.0m

35mm

Up to 27m 1.4m

28mm

Up to 9m -

¾” 22mm 35mm

Up to 18m -

42mm

Up to 27m 1.7m

35mm

Up to 9m 1.4m

1” 28mm 42mm

Up to 18m 1.7m

54mm

Up to 27m 2.3m

Fig 7.3

Worked example

The example below is for a ½”diameter temperature relief valve with a discharge pipe (D2) having 4
elbows and a length of 7m from the tundish to the point of discharge.

From the table above the maximum resistance allowed for a straight length of 22mm copper
discharge pipe (D2) from a ½”diameter 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.

5.8 m is less than the actual length of 7m, therefore, calculate the next largest size.
Maximum resistance allowed for a straight length of 28mm pipe (D2) from a ½”diameter temperature

relief valve equates to: 18m.
Subtract the resistance for 4 No 28mm elbows at 1.0 each = 4m.
Therefore the maximum permitted length equates to 14m.
As the actual length is 7m, a 28mm diameter copper pipe will be satisfactory.

10

8. Electrical installation
WARNING: THIS EQUIPMENT MUST BE EARTHED.

All electrical wiring must be carried out by a competent person and in accordance with the current
I.E.E. Wiring Regulations.

The control equipment supplied will ensure that the cylinder functions safely. It is intended that these
controls operate in conjunction with other control packages as described in the Solar system
installation guide which incorporates a programmable time clock etc.

8.1.The immersion heater - A 3kW 230v 50Hz immersion heater is supplied with the cylinder. It
should be wired in accordance with the instructions given in Fig 8.1. The cable MUST be routed
through the strain relief bush. We recommend that the control thermostat is set at 60°C, the high limit
trip is factory set at 85°C.

8.2 Immersion heater wiring instructions

The immersion should be installed and wired in accordance with the instructions supplied with the
immersion itself, the following should also be observed:

8.2.1 Ensure the mains voltage corresponds to the voltage rating of the immersion heater as shown
on the rating label on the terminal cover.

8.2.2 Insert the immersion into the immersion heater boss at the bottom of the cylinder. Tighten
using an appropriate sized immersion spanner, or as required by the immersion instructions.

8.2.3 Wire the immersion heater through a double pole isolator switch or controller, having contact
separation of at least 3mm, using 1.5mm sq. flexible cable which must be fully earthed. The
live to the immersion should be wired through its thermostat and cut-out as shown in figure

8.1, the Neutral to the Neutral terminal.

8.2.4 In the event of the manual reset cut-out operating, isolate the immersion heater from the
mains supply, investigate and identify the cause of the operation of this cut-out, rectify the fault
before manually resetting the cut-out via the reset button on the cut-out. Finally switch the
mains electricity supply back on.

8.2.5 Do not install an immersion heater without a thermal cut-out.

Fig 8.1

Fig 8.1

WARNING: THIS APPLIANCE MUST BE EARTHED.

11

8.3 Two Port Valve-The two port valve should be wired to the twin thermostat as per Figure 8.2

below:

8.3.1 Connect the Live supply to the thermal-cut-out and connect the brown wire of the two-port
valve to terminal 2 on the thermostat. Earth and Neutral supplies can be connected directly to
the valve.

8.3.2 The orange wire of the two-port valve should be connected to the central heating boiler.

8.3.3 The cylinder thermostat should be set to 60

o

C

Fig 8.2

Fig 8.3

8.4 The Power Supply to the pump station should be connected via the lower

9. Filling and commissioning

9.1. Check that the expansion vessel charge pressure is 3bar.

9.2. Check that all connections are tight and correctly configured.

9.3. Open the main stopcock and fill the secondary system. Open successive hot taps. Leave each

tap open for a few minutes to allow all air and debris from the system to exit. Close all taps.

Thermostat

L
N
E

12

3

4

56

7

8

9

10

X

X

X

X

X

X X

Thermal cut-out

C

E

1

2

Solar Circulating Pump 230 V supply?

Thermostat

Bn

Bl

G/Y

O

G

L
N
E

12

3

4

56

7

8

9

10

X

X

X

X

X

X

X

Thermal cut-out

C

E

1

2

Two-port motorised valve

Boiler switched live

12

9.4 Turn off the mains water supply to the cylinder and drain the system through the drain cock.

9.5 Refill the cylinder with hot taps open and close when water flows freely.

9.6 Manually lift (by rotating the knob) both the expansion relief and the temperature and pressure

relief valve for a short period to remove trapped air from behind the valve seating and to prove the
correct function of the discharge arrangement.

9.7. Check all joints for leaks and rectify as necessary.

9.8. Check that the control thermostat on the immersion is set 60

o

C and the high limit thermostat is

correctly connected to all appropriate safety controls.

9.9. Fill the primary side as per the solar installation instructions, (note:- it will be necessary to check

for leaks and rectify as necessary). Commission the solar system and heating system in accordance
with manufacturers instructions

9.10 Check that while the cylinder is heating up, no water exits from either the expansion relief or the

temperature and pressure relief valve.

9.11 When the solar system reaches its maximum operating temperature the pump should stop

operating. A programmable time clock should ensure that the water is heated to 60

o

C each day by
either an immersion or separate boiler. Adjust the time clock manually to ensure that the immersion or
boiler come on when required. Check that the immersion or boiler switches off when the cylinder
reaches the desired temperature.

10 Servicing and maintenance.

10.1. Servicing and maintenance must only be carried out by a competent unvented hot water

installer or by Dimplex authorised personnel.

10.2. Before any work whatsoever is carried out on the installation, it MUST first be isolated from the
mains electricity supply.

10.3. WARNING: both the primary and secondary systems will contain very hot water that will scald,
therefore care should be taken when opening any joints, seals or valves.

10.4. Only use spare parts authorised by Dimplex. The use of other parts will invalidate the warranty.

10.5. Draining the Cylinder - Having isolated the electricity supply, drain the cylinder. When draining

the cylinder, always switch off the solar system and the immersion heater first. Turn off the water
supply at the stopcock (see Fig 4.1). Connect a hosepipe to the drain cock and route it to a
convenient place. Open the drain cock and all hot taps that are served by the cylinder. The cylinder
may take several minutes to empty completely.

10.6. Remove the cartridge from the pressure reducing valve (PRV). Check the strainer and if
necessary remove any debris from in front of it. Replace the cartridge.

10.7. Check the charge pressure in the expansion vessel and top up as necessary. The charge
pressure should be 3bar.

10.8. Periodically the immersion heater should be removed, and the cylinder flushed out to remove
any debris, sand or limescale particles that may have collected in the bottom.

13

10.9. In hard water areas it may be necessary to remove and de-scale the immersion heater element.
Replace the gasket each time it is removed. If large amounts of scale is present it may be advisable
to fit a water softening device.

10.10. To refill the cylinder, close the drain cock, disconnect the hose, refit the immersion heater with
new gasket and close all hot water taps before reopening the stopcock. Allow the cylinder time to fill
whilst checking for any leaks. Release any air from the system by opening each hot water tap
individually, starting with the one furthest from the cylinder.

10.11. Manually lift the expansion relief and temperature and pressure relief valve one at a time,
every 12 months (more frequently in hard water areas) to prevent debris from building up behind the
valve seat. Whilst carrying out this operation, check that the discharge to waste is unobstructed.
Check that each valve seals correctly when released. As the valves are pre-calibrated, they require
no further maintenance.

10.12. Finally switch on the mains electricity supply to the immersion heater and the solar system.
Turn the system on to heat the water. As the system heats up, check again for any leaks and rectify
as necessary.

11 Fault finding

Notice: Disconnect electrical supply before removing any electrical equipment cover.

Fault Possible cause Remedy
No hot water 1. Mains supply off

2. Strainer blocked

3. Pressure reducing valve(PRV) fitted the
wrong way

1. Open stopcock

2. Turn water supply off, remove strainer
and clean. (see 10.6)

3. Re-fit with arrow pointing in direction of
flow

Water from hot taps is cold 1. Programmer set to heating only or not

switched on for hot water

2. Central heating boiler malfunction

3. High limit thermostat has tripped

4. Pump malfunction

1. Set programmer to call for hot water

2. Check boiler operation if faulty consult
your boiler manufacturers instructions

3. Check and re-set

4. Check wiring and/or plumbing
connections to pump

Intermittent water discharge through
tundish on warm-up

1. Expansion vessel has lost its charge
pressure

1. Turn off stopcock open a hot water tap
check vessel charge pressure and recharge
to 3 bar

2. Replace vessel if necessary

Continuous water discharge 1. Pressure reducing valve (PRV) not

working

2. Pressure relief valve not seating correctly

3. Temperature and pressure relief valve not
seating correctly

1. Check pressure from PRV if greater than
3bar replace cartridge

2. Manually lift the valve once or twice to

clear any debris from the seat otherwise
replace valve

3. Manually lift the valve once or twice to

clear any debris from the seat otherwise
replace valve

12 Users instructions

12.1 Your SCX Solar unvented hot water cylinder has been designed to give many years of trouble

free service and is made from hygienic stainless steel. It includes a 3 kW electric immersion heater
(and an auxiliary coil for boiler connection – indirect models only) which heats the water to 60

o

C once

pre-heating from the solar system is completed.

14

12.2. The flow temperature of the hot water can be set to your requirements on the immersion heater
ideally 60°C. Higher temperatures can cause tripping of the high limit thermostat and introduces more
energy loss from the cylinder.

12.3. When a hot tap is turned on there may be a short surge of water, this is quite normal with
unvented systems and does not mean there is a fault.

12.4. When you first fill a basin the water may sometimes appear milky. This is due to very tiny air
bubbles in the water which will clear very quickly.

12.5. WARNING: If cold/warm water exits from the temperature and pressure relief valve (TPV) or
from the pressure relief valve call your installer or the Dimplex customer service centre. If very hot
water exits from either valve switch off the heat source immediately and isolate the electricity supply
to the cylinder and separate heat source.

12.6 The solar system is configured to heat the water to its maximum economic temperature which
may vary with outside temperature and weather conditions. The immersion or boiler may be
programmed to operate during fixed periods of the day or night. If the hot water runs cool it may be
necessary to manually switch on the immersion or boiler to heat the water.

13 Warranty

13.1. Dimplex UK Limited guarantee all electrical and mechanical controls supplied with the cylinder,

excluding the immersion, for a period of 5 years from the date of purchase provided that they have
been installed for their intended use by a competent person and have not been modified in any way.
The immersion(s) are guaranteed for a period of 2 years, excluding any failure caused by limescale.

13.2. In addition Dimplex UK Limited guarantees the stainless steel inner hot water cylinder for a
period of 25 years from the date of purchase against faulty material or manufacture provided that:

(a) It has been installed by a competent person in accordance with this installation manual and all

current regulations and codes of practice at the time of installation.

(b) It has been used solely for the purpose of heating potable water that complies with current (at

the time of installation) EU standards and is not fed with water from a private source.
(c) It has not been modified in any way.
(d) It has not been subjected to excessive pressure or electrolytic action from dissimilar materials,

or attack from any salt deposits.
(e) It has been installed indoors in a frost-free environment.
(f) The cylinder is connected to a public water supply maintained by a local water authority.
(g) The warranty card is completed and returned to Dimplex UK Limited within 90 days of

installation.

This warranty is not transferable. This warranty does not include claims due to frost or lime scale
damage. Proof of purchase will be required against any claim. This guarantee does not affect your
statutory rights.

15

14 Spare part numbers

• Expansion vessel 24litre SC07011

18litre

• Expansion vessel bracket 24litre SC07002

18litre

• T/P valve 7bar 90

o

C 230mm SC07004

• 15mm to 22mm straight tundish SC06004

• 3kW Immersion heater SC070011 or SC070012

• 22mm Pressure reducing valve kit SC07015

• 22mm 2-port motorised valve SC06005

• Twin Cylinder Thermostat SC06006

For assistance please contact the Dimplex Customer Services Department:

Dimplex UK Limited, Millbrook House, Grange Drive, Hedge End, Hampshire, SO30 2DF.

Tel: [phone] Fax: [phone]

16

15. Installation, Commissioning and Service Record

CUSTOMER DETAILS

NAME
ADDRESS
TEL No.

INSTALLER DETAILS

COMPANY NAME DATE
ADDRESS
TEL No.
INSTALLER NAME REGISTRATION No.

COMMISSIONING ENGINEER (IF DIFFERENT)

COMPANY NAME DATE
ADDRESS
TEL No.
INSTALLER NAME REGISTRATION No.

CYLINDER DETAILS

MODEL
CAPACITY LITRES SERIAL NO.

SERVICE RECORD DETAILS

Before completing the appropriate Service Interval Record below, please ensure you have carried out the service as
described in the manufacturer’s instructions and in compliance with all relevant codes of practice.
It is recommended that your hot water system is serviced regularly and that your service engineer completes the
appropriate Service Interval Record below.

SERVICE 1 DATE:

SERVICE 2 DATE:

ENGINEER/COMPANY ENGINEER/COMPANY
TEL NO. TEL NO.
COMMENTS COMMENTS

SIGNATURE SIGNATURE

SERVICE 3 DATE:

SERVICE 4 DATE:

ENGINEER/COMPANY ENGINEER/COMPANY
TEL NO. TEL NO.
COMMENTS COMMENTS

SIGNATURE SIGNATURE

SERVICE 5 DATE:

SERVICE 6 DATE:

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