Ec_Eau_Shetland_Cylinder_Instructions_Issue_0

Ec_Eau_Shetland_Cylinder_Instructions_Issue_0

Direct Electric Cylinders for

Demand Side Management

EC-Eau Cylinder Range

Installation and User Instructions

Important - This manual must be left with the user after Installation!

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.

0 Overall View

07

09

02

03

08

06

05

Controlled immersion

04

10

Figure 1: Overall view of Direct Electric Cylinder Installation Process

Overall View

01

1 Contents

0 OVERALL VIEW ...........................................................................................3

1 CONTENTS .................................................................................................4

2 INTRODUCTION ..........................................................................................6

3 SCOPE OF DELIVERY ...................................................................................6

4 PRE-INSTALLATION ADVICE .........................................................................8

4.1

R

ISK ASSESSMENT

.......................................................................................8

4.2

S

ITING CONSIDERATIONS

...............................................................................8

4.3

C

OLD WATER SUPPLY

....................................................................................9

4.4

B

UILDING REGULATION

G3 D

ISCHARGE REQUIREMENTS

......................................... 10

4.4.1

Discharge pipe D2............................................................................ 11

4.4.2

Worked example .............................................................................. 12

4.4.3

Termination of discharge pipe ........................................................... 13

4.5

L

IMITATIONS

............................................................................................ 14

5 INSTALLATION .......................................................................................... 14

5.1

C

OLD

W

ATER

I

NLET WITH

I

NLET

C

ONTROL

G

ROUP

............................................... 14

5.1.1

Correctly site the cylinder ................................................................. 14

5.1.2

Install the inlet group ....................................................................... 14

5.1.3

Expansion vessel ............................................................................. 14

5.1.4

Balanced cold water supply ............................................................... 15

5.1.5

Drain valve ..................................................................................... 15

5.2

H

OT

W

ATER

O

UTLET

.................................................................................. 15

5.2.1

Thermostatic mixing valve ................................................................ 15

5.2.2

Pipe insulation ................................................................................. 15

5.3

D

ISCHARGE PIPES FROM SAFETY DEVICES

.......................................................... 15

5.3.1

Discharge pipe D1............................................................................ 15

5.3.2

Discharge pipe D2............................................................................ 16

5.3.3

Tundish .......................................................................................... 16

5.4

I

MMERSION HEATERS

.................................................................................. 17

5.4.1

Boost Immersion ............................................................................. 17

5.4.2

Controlled immersions ...................................................................... 17

5.5

C

ONNECTION OF

S

ECONDARY

R

ETURN

.............................................................. 21

6 COMMISSIONING ...................................................................................... 22

7 MAINTENANCE .......................................................................................... 23

8 SPARE PARTS ........................................................................................... 25

9 TECHNICAL DATA ...................................................................................... 27

10 USER INSTRUCTIONS ................................................................................ 29

10.1

G

ENERAL

............................................................................................. 29

10.2

O

PERATION

.......................................................................................... 30

10.2.1

Water temperature direct electric heating ........................................... 30

Contents

10.3

M

AINTENANCE

....................................................................................... 31

10.4

T

ROUBLESHOOTING

................................................................................. 32

Contents

2 Introduction

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.

This range of Dimplex cylinders allow the utility to control the charging of the cylinder remotely, thus allowing the matching of energy requirements with the availability of electricity.

The stepped immersion rating approach allows added flexibility without compromising the comfort delivered to the user.

The controlled immersions operate depending on the utilities requirements and the boost immersion remains available to the user to adjust unforeseen hot water demand.

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.

Scope of Delivery

* These items are supplied factory fitted

Table 1: Scope of Delivery for Direct Electric Cylinders

Scope of Delivery

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.

Pre-Installation

- 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. application

The thereof is responsibility of the competent installer. correct the

- 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

- 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

Maximum inlet supply pressure

Minimum flow rate

150 kPa

(1.5 bar)

1200 kPa

(12 bar)

15 l/min

Max. chlorine content

Max. water hardness

250mg/L

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.

Pre-Installation

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 descaling. 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.

Pre-Installation

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, 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).

Figure 2: Typical discharge pipe arrangement

Pre-Installation

Table 2: Sizing of copper discharge pipe “D2” for common temperature relief valve outlet sizes

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.

Pre-Installation

- 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 crosslinked complying polyethylene standards. with

(PE-X) national

- be continuously marked with a warning that no sanitary appliances should be connected to the pipe.

4.4.3 Termination discharge pipe of

- “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.

Pre-Installation

4.5 Limitations

Due to the operating temperatures of direct electric water heaters the water hardness can considerably influence the longevity of the immersion heater element. Please consult local water board for advice on maintenance intervals.

5 Installation

5.1 Cold Water Inlet with

Inlet Control Group

5.1.1 Correctly cylinder site the

Install the cylinder in an appropriate location, ensuring all of the recommendations have

considered (see chapter 4.2).

been

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. No isolating device must be fitted between the water cylinder 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. The pre-charge should be greater than or equal to 3 bar.

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.

Installation

Cold

Water from

Mains

Expansion

Relief

Valve

Cold

Water to

Cylinder

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 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 (not supplied) 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.

5.2 Hot Water Outlet

The hot water pipe work is to be directly connected to the hot water outlet connection on the cylinder, see

Figure 1.

5.2.1 Thermostatic mixing valve

Balanced

Cold Water

Supply

Expansion

Vessel

Connection

A thermostatic mixing valve may be required to limit the outlet temperature. In this case, the valve should be installed following the manufacturer’s instructions, ensuring none of the safety equipment has been isolated, (i.e. make sure the connection to the thermostatic mixing valve is taken after the safety equipment of the inlet group).

5.2.2 Pipe insulation

It is recommended to insulate the hot water pipe work from the cylinder to the outlets, to reduce the energy requirements for providing hot water.

It is also recommended to insulate all other exposed pipework, such as the

T&P to the tundish, the coil flow and return and the cold water inlet pipes.

5.3 Discharge pipes from safety devices

5.3.1 Discharge pipe D1

- The temperature and pressure relief valve must be discharged directly or by way of a manifold via a short length of metal pipe (D1) into a tundish; and the discharge pipe must be installed in a continuously downward direction and in a frost free environment. Water may drip from the discharge pipe of the pressure relief device and this pipe must be left open to the atmosphere.

- The diameter of discharge pipe (D1) should not be less than the nominal outlet size of the safety device, e.g. temperature relief valve.

- Where a manifold is used it should be sized to accept and discharge the total discharge from all the D1 discharge pipes connected to it.

Installation

- The discharge pipe work from the expansion relief valve must be installed constantly falling to an open point of discharge. It is recommended to combine it with the discharge of the temperature and pressure relief valve.

Note: The T&P valve is pre-sealed and if moved the seal will be broken, should this occur, it will need to be resealed with an appropriate sealant (Dimplex part number R00836-1).

5.3.2 Discharge pipe D2

For a detailed description of the discharge pipework D2 see chapter

4.4.1.

5.3.3 Tundish

- The tundish should be vertical, located in the same space as the unvented hot water storage system and be fitted as close as possible to, and lower than, the safety device, with no more than 600mm of pipe between the valve outlet and the

tundish (see Figure 2).

- Discharge should be visible at the tundish, where discharges may not be apparent, e.g. in dwellings occupied by people with impaired vision or mobility, consideration should be given to the installation of a suitable safety device to warn when discharge takes place, e.g. electronically operated.

Note: To comply with the Water

Supply (Water Fittings)

Regulations, the tundish should incorporate a suitable air gap.

It is important that the tundish is positioned away from any components.

electrical

Installation

Figure 5: Wiring diagram for Boost Immersion Heater

5.4 Immersion heaters

The immersion heater has to be connected in accordance with IEE

Wiring Regulations and the installer carrying out the work has to be suitably qualified. It must be connected through a double pole isolating switch or suitable controller which must have a contact separation of at least 3mm in all poles.

Should it be necessary to remove the thermostat from the immersion element, ensure that the contacts are re-fitted correctly into the positions on the element. Failure to do so carries the risk of overheating the contacts and thus damaging the appliance. The immersion heater thermostat must not be opened under any circumstances.

Note: The cylinder must be filled with water before switching on the immersion heater. Failure to do so will damage the element and void any guarantee on the product.

5.4.1 Boost Immersion

This immersion heater incorporates an independent non self-resetting over temperature cut-out and a manually adjustable thermostat (as described in

section 10.2.1). Should the over

temperature cut-out operate, the reset pin will be pushed upwards, and become level or slightly proud of the cover at the position marked “Safety”.

Use a suitable sized implement to reset the pin by pushing it hard into its original position.

The wiring diagram for the boost

immersion can be seen in Figure 5.

For further details please see instructions provided with the immersion heater.

5.4.2 Controlled immersions

Immersions 4, 5 and 6 (see Figure 1)

are pre-wired to the cylinder controller. The operation of the immersions is controlled using NTC sensors.

These immersion heaters incorporate an independent non self-resetting over temperature cut-out and do not

Installation

contain a manually adjustable thermostat. The wiring installation of the controlled immersions is carried out by bringing in a single supply to the connection block behind the bottom immersion cover as shown in

Figure 6.

Live

Neutral

T1

T2

T3

T4

T5

T6

Earth

NOTE: T4, T5 & T6 must be connected with a suitably sized three core cable as shown. T1, T2 & T3 are internal wiring connections.

To access the wire connections remove the bottom cover by taking out the screw as highlighted above.

Figure 6: Wiring for the controlled immersions

Installation

Figure 7: Combined plumbing and wiring schematic

Installation

Figure 8: Internal Cylinder Wiring Schematic

Installation

5.5 Connection

Secondary Return of

For cylinders that do not have a dedicated secondary return connection, it is possible to install a secondary return by connecting a swept - T to the cold water inlet of the

cylinder (see Figure 9).

The secondary return pipe should incorporate a check valve and a WRAS approved circulation pump; timer and thermostat to be provided separately.

Where secondary return circuits are used, then an additional expansion vessel may be required.

The secondary return loop must avoid:

- stagnant water in long pipe runs

- long waiting times at draw off point for hot water

- undue water wastage

To minimise the energy consumption of the secondary return circuit and to ensure reliable operation it is important to consider:

- the control of the circulation pump to be time and temperature controlled

- the secondary return circuit pipe work to be insulated

- the secondary return pump to be of suitable material and specification

HW Outlet

To Taps

From Taps

Swept-T

Figure 9: Secondary return loop

Installation

6 Commissioning

At the time of commissioning, complete all relevant sections of the

Benchmark Checklist located on the inside back pages of this document.

The following commissioning procedures only detail the required steps to be taken for the potable water loop:

1) Before making any mains connections to the inlet control group, flush the mains pipework out to ensure all debris has been removed so as not to damage the strainer within the combination valve.

2) Make final mains connection on combination valve and check all connections and joints to ensure they have been tightened and secured correctly.

3) Before turning on the mains supply to the cylinder a hot water tap should be opened, preferably on the same floor or the floor below where the cylinder is located.

4) Check the pre-charge in the expansion vessel and ensure it is at least 3 bar. Note actual pressure on label on expansion vessel.

5) Turn on the supply to the cylinder and fill until water runs from the open hot water tap. Continue to flush the system until all debris has been removed.

6) Close the hot water tap.

7) Check all joints for leaks, even those not having been altered especially when replacing a vented cylinder.

8) Open temperature and pressure relief valve to ensure proper discharge and check after closing that valve is not dripping.

9) Open expansion relief valve to ensure proper discharge and check after closing that valve is not dripping.

10) Check all shower outlets, toilet cisterns and other draw off points for leaks or dripping (especially when replacing a vented unit).

Open all water outlets to purge air from pipe work and ensure proper operation.

11) Adjust boost thermostat requirements. with immersion client

12) Pair cylinder to hub to enable operation of controlled immersions (if no hub is available, the unit operates in standalone mode).

13) Complete the technical data label on the cylinder with legible and permanent writing.

Commissioning

7 Maintenance

After servicing, complete the relevant

Service Record section of the

Benchmark Checklist located on the inside back pages of this document.

To meet with warranty requirements the cylinder must be serviced annually.

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!

1) Draw some water from cold water tap and retain in container.

2) Isolate cold water mains supply from cylinder.

3) Briefly open temperature and pressure relief valve, assure safe discharge and check that valve is not dripping when closed.

4) Briefly open expansion relief valve, assure safe discharge and check that valve is not dripping when closed. The expansion relief valve should be operated regularly to remove lime deposits and to verify that it is not blocked.

5) Open hot water tap and release remaining pressure from unit.

6) If the system is drained completely for an internal inspection, ensure the hot water tap remains open, connect a hose

Maintenance

to the drain valve and ensure a safe discharge.

7) Note the set pressure of the pressure reducing valve. Remove cartridge and clean strainer in water provided in container. Reassemble pressure reducing valve ensuring the correct pressure is set.

8) Periodically the immersion heaters should be removed cleaned and the unit flushed out.

Check the O-ring seal for damage and replace if necessary. A torque of 40 Nm is recommended when tightening up the immersion after it has been removed and refitted.

9) Check electrical wiring connections and the condition of the cable of the immersion heater and the thermostat.

10) The immersion heater boss can also be used for access to view the internal components of the cylinder.

11) Re-commission unit (see chapter

6).

If the cylinder is not in use for excess of 1 month, it must be drained down by a competent person and recommissioned before use. Note: The immersion must be switched off at the mains before draining the cylinder.

If replacement parts are required,

please see Figure 10 and Figure

11 for part descriptions and part

numbers.

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.

Maintenance

8 Spare Parts

Figure 10: Replacement part numbers for Direct Electric for demand side management range of cylinders

Spare Parts

Figure 11: Replacement part numbers for Direct Electric for demand side management range of cylinders continued

Spare Parts

9 Technical data

Figure 12: Direct Electric Cylinder and Cross-section (for reference only)

Direct Electric Cylinder Range

Reference

Nominal Volume [l]

Weight [kg]

Reheat time [mins]*

Heat Loss [kWh]

Height [mm]

Outer Diameter [mm]

HW Outlet [mm]

T&P valve [mm]

CW Inlet [mm]

Bottom Immersion [mm]

Middle Immersion [mm]

125

125

26.0

131

1.29

945

580

720

720

180

182

352

175 210

175.5 211.5

34.0

202

36.5

243

1.55

1265

580

1040

1040

180

182

352

1.64

1490

580

1265

1265

180

182

352

Top Immersion [mm]

Left Immersion

(Boost Immersion) [mm]

PCB Enclosure [mm]

543

645

543

845

Technical Data

543

1080

760 760 760

Table 3: Direct Electric Cylinder Dimensions

Note: All measurements are taken from the base of the cylinder to the mid-point on the item.

* Determined in accordance with EN160335-2-21.

Direct Electric Cylinder Range

Capacity

Materials

- inner cylinder

- outer cylinder

- inlet/outlet

- insulation

Maximum operating conditions

- potable water temperature

- operating pressure

125

125

175

210

HIPS

Stainless steel

60mm PU foam (GWP=1, ODP=0)

70°C

3 bar

Cold water supply

- minimum dynamic pressure

- maximum pressure

- minimum flow rate

Connections

- cold water inlet

- hot water outlet

Titanium Immersion heater with stat mod (4)*

1.5 bar

12 bar

15 l/min

22mm stainless steel

22mm stainless steel

1 ¾ F BSP 1500W

210

300

Titanium Immersion heater with stat mod (5)*

1 ¾ F BSP 750W

Titanium Immersion heater (6)*

Titanium Immersion heater (7)*

1 ¾

1 ¾

F BSP

F BSP

375W

3000W

Thermostatic control

- direct input

Safety components

integral immersion heater thermostat and cut out

- pressure reducing valve and strainer

3 bar

- expansion relief valve

- temperature and pressure relief

6 bar

7 bar/90°C

Other features

12 bar

Over 60% in volume from recycled materials#

Surface mounted sensor devices for compatibility and ease of maintenance

Approvals

Guarantee

- inner cylinder

- immersion heaters

- other components

KIWA approval number:- 1112713

KIWA

KIWA

25 yrs

2 yrs - excluding the effects of lime scale or other water borne contaminants

2 yrs - excluding expansion vessel membrane pressure

Table 4: Direct Electric Product features

# Not including insulation

* Please refer to the reference numbers in Figure 1, for the location of the specified immersions

Technical Data

10 User Instructions

10.1 General

This appliance is not intended for use

by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning the use of the appliance by person responsible for their safety.”

“Children should be supervised to ensure they do not play with this

appliance.”

Please read the following statements carefully as it affects your warranty:

Please ensure that the installer has fully completed the Benchmark

Checklist on the inside back pages of this document and that you have signed it to say that you have received a full and clear explanation of its operation. The installer is legally required to complete a commissioning checklist as a means of complying with the appropriate Building

Regulations Part G3 (England and

Wales), Part P of Northern Ireland and

Section 6 of Scotland.

All installations must be notified to

Local Area Building Control either directly or through a Competent

Persons Scheme. A Building

Regulations Compliance Certificate will then be issued to the customer who should, on receipt, write the

Notification on the Number

Benchmark Checklist.

This product should be serviced annually to optimise its safety, efficiency and performance. The service engineer should complete the relevant Service Record on the

Benchmark Checklist after each service.

The Benchmark Checklist will be required in the event of any warranty work.

User Instructions

10.2 Operation

Once the system has been fully commissioned, no user intervention should be required to fully enjoy the comfort and benefits of the unvented hot water cylinder.

The hot water temperature of the controlled immersions cannot be adjusted by the user. If the user has no hot water available, the high limit cut out should be checked to see if for some reason the device has tripped.

The only immersion heater on which the temperature can be controlled by the user is the boost immersion which is located off to the left hand side of the cylinder. When adjusting the boost immersion temperature beware of higher temperatures as hot water can cause injury due to scalding.

When turning on a hot tap for the first time after a heat up period there might be a short surge of water. This is normal in unvented systems and does not constitute a fault. Sometimes the water may appear milky – this is due to very fine air bubbles in the water which will clear quickly.

10.2.1 Water temperature direct electric heating

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 hot water temperature achieved by the direct electric heating element can be adjusted by removing the cover from the immersion heater and adjusting the dial up or down as

indicated in Figure 13.

Dial to adjust water temperature

Figure 13: Adjustment water temperature direct electric boost immersion heating element

Operation

10.3 Maintenance

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!

Operation

10.4 Troubleshooting

Fault Cause

A No water from hot

water taps

A.1 Stop valve closed

A.2 Strainer blocked

A.3 Pressure reducing valve fitted against flow

B No hot water

B.1 Timer/Programmer not set correctly

B.2 Direct heating malfunction

C Intermittent water discharge through tundish on warm-up

D Continuous discharge

C.1 Expansion vessel lost charge

E Leakage from casing

F Hot water from cold tap

D.1 Pressure reducing valve not working

D.2 Pressure relief or T&P valve not seating correctly

E.1 Compression/threaded joints not formed correctly

F.1 Hot pipe work being routed adjacent to cold pipe work

F.2 Leaking seal in mixer tap

G Metallic noise from system

H Humming noise from system during re-heat

G.1 Pipe work not sufficiently supported

H.1 Air in system

H.2 Flow rate well in excess of specification

Solution

A.1 Open stop valve

A.2 Turn water supply off, clean strainer and recommission

A.3 Re-fit with arrow showing in direction of flow

B.1 Set timer/programmer correctly

B.2 Call for qualified person to check immersion heater

C.1 Check expansion vessel

(see commissioning/maintena nce), top up or replace

D.1 Check pressure after valve and replace if faulty

D.2 Manually lift valve once or twice to clear debris, otherwise replace

E.1 Re-seal joints with care

F.1 Insulate hot pipe work or re-route

F.2 Replace seals in mixer tap

G.1 Add extra pipe work fixings

H.1 Bleed system thoroughly and re-pressurize

H.2 Reduce pump speed

Troubleshooting

Notes

Notes

Notes

Dimplex a division of GDC Group Ltd

Millbrook House Grange Drive, Hedge End, Southampton SO30 2DF

Tel.: 0845 600 5111 e-mail:

[email protected]

www.dimplex.co.uk

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