Dimplex SCxn175sd Manuel utilisateur

Page 1 of 28

ST0109 – C 05/09

WATER

Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si

Installation and operating instructions

Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si

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ST0109 – C 05/09

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0 Overall view

Figure 1 – Overall view of proposed installation sequence SCxn…d/i

SCxn80/130/150/175/215/255/305d

SCxn80/130/150/175/215/255/305i

Standard SCxn cylinder

Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si

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ST0109 – C 05/09

WATER

Figure 2 – Overall view of proposed installation sequence SCxn…sd/si

SCxn175/215/255/305sd

SCxn175/215/255/305si

Solar SCxn cylinder

Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si

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1 Contents

0 OVERALL VIEW 2

1 CONTENTS 4

2 BEFORE YOU START 5

GENERAL 5

COMPETENCE 5

HEALTH AND SAFETY 5

RISK ASSESSMENT 6

3 SCOPE OF DELIVERY 6

4 PRODUCT FEATURES AND DESCRIPTIONS 7

5 INSTALLATION 9

5.1 GENERAL ADVICE 9

5.2 SITING CONSIDERATIONS 10

5.3 COLD WATER SUPPLY AND DISCHARGE PIPE WORK 10

5.4 HOT WATER OUTLET 12

5.5 IMMERSION HEATER 12

5.6 INDIRECT HEATING LOOP 13

5.7 SOLAR LOOP 14

5.8 SECONDARY RETURN 15

5.10 INSTALLATION EXPANSION VESSEL 15

5.11 WIRING SCHEMATIC AUXILIARY LOOP 16

5.12 WIRING SCHEMATIC SOLAR LOOP 19

5.13 SOLAR SENSOR INSTALLATION 19

6 COMMISSIONING 21

6.1 SCXN …D/I RANGE 21

6.2 SCXN …SD/SI RANGE 21

7 OPERATION 22

7.1 WATER TEMPERATURE DIRECT ELECTRIC HEATING 22

7.2 WATER TEMPERATURE AUXILIARY HEATING 23

8 MAINTENANCE 23

9 TROUBLESHOOTING 24

10 TECHNICAL DATA 25

10.1 SCXN …D/I25

10.2 SCXN …SD/SI 26

Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si

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2 Before you start

General

Thank you for choosing a Dimplex product. We ensure you that every effort was made

at design, manufacture and delivery stages of this product to meet your expectations.

We ensure you of our best possible support throughout the product’s lifespan.

As part of ongoing product development and improvement Dimplex reserves the right to

undertake changes to the product without prior notice. Great care has been taken to

ensure this manual was correct at the time of print. Should you however discover any

issues with the information contained therein please do not hesitate to contact your

vendor.

We strongly recommend you read the whole contents of this manual before commenc-

ing the work.

Competence

Dimplex products have been designed and manufactured to the current relevant stan-

dards and under stringent quality control. It is therefore imperative that the product is

only installed by a:

- trained and

- competent

person as defined in the relevant regulations. Dimplex does not accept any liability for

damage done to persons or property resulting from undue handling and usage of this

product.

All regulations current at the time of installation are to be considered alongside the con-

tent of this manual as they form the code of best practice.

The guarantee of this product is linked to the ability of proving that the product was

installed, commissioned and maintained:

- by a competent person

- in accordance with Dimplex instructions and the current relevant regulations and leg-

islation

- the product being registered with Dimplex at the time of installation using the form in

the Dimplex On Site Guide

- records showing the date of maintenance in accordance with the maintenance sched-

ule as detailed in the On Site Guide

Health and Safety

The installation of this product is subject to the Health and Safety at Work Act. It is

your responsibility to ensure that the transport, storage, installation and operation of

the product is carried out in a safe manner.

Dimplex will not accept any liability due to damage caused to people or property result-

ing from negligence or not adhering to the relevant Health and Safety practises.

Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si

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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 informa-

tion 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

- 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 compe-

tent 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 Practise

L8.

- the user preference must be considered when commissioning the system, in particular

when adjusting the solar and auxiliary system temperature and timer settings.

3 Scope of delivery

Please check the contents and condition of your delivery before signing the delivery

documentation. Contact your supplier immediately for any missing or damaged compo-

nents. Claims for missing or damaged parts after signing for the delivery will not be

accepted.

SCxn

175/215/255/305

SCxn

80/150/175/215/255/305

d i sd si

Unvented stainless steel

cylinder including:

- cold water inlet

- hot water outlet

- ½” sensor pockets

- ½” secondary return

- auxiliary heating coil

- solar coil

- twin thermostat

- 3kW immersion

- T&P Valve

x1(SCxn80)/x2

Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si

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Figure 3 – Scope of delivery

4 Product features and descriptions

The Dimplex®unvented stainless steel cylinder range incorporates many features to

ensure the highest level of comfort in providing hot water while minimising energy re-

quirements and environmental impact during manufacturing, operation and disposal.

The range covers storage volumes from 80 litres to 305 litres in various designs from

direct electric heated units, indirect units to a range of units allowing the use of renew-

able energy sources such as solar thermal.

A complete list of features provided by the whole range of cylinders is given in Figure 4.

Expansion vessel:

18 l: 175 l, 215 l

24 l: 255 l, 305 l

Expansion vessel

fixing kit

- - x1

Inlet control

group

2ba

6bar

2ba

6bar

3ba

6bar

3ba

6bar

Tundish

15mm – 22mm

x1 x1 x1

Two port motor-

ised valve 22mm

x1 - x1

Instructions x1

x1 x1 x1

Benchmark card x1

x1 x1 x1

SCxn…d SCxn…i

SCxn…sd SCxn…si

Pres. red.

Pres. rel.

Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si

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Feature

SCxn

305

80 130 150 175 215 255 305

175

305

175

305

Materials

- inner cylinde

- outer cylinder

- inlet/outlet

- coils

- insulation

Duplex stainless steel

Dove grey leather grain coated steel

Stainless steel

Corrugated stainless steel

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

Maximum operating conditions

- potable water temperature

- heating water temperature

- operating pressure

70°C

95°C

6bar

Cold water supply

- minimum dynamic pressure

- maximum pressure

- minimum flow rate

1.5bar

25bar

15 l/min

Connections

- cold water inlet

- hot water outlet

- secondary return

- coil flow and return

- sensor pocket

22mm stainless steel

½”F BSP

22mm stainless steel

½”F BSP

Coil specification

- surface area [m²]

- rating [kW]

0.3

0.5

0.75

0.75/1.1

17/-

Immersion heater 1/

2 1 1 2

Thermostatic control

- direct input

- indirect input

- integral immersion heater thermostat and cut out

- external twin thermostat and cut out

Safety components

- pressure reducing valve and

strainer

- expansion relief valve

- temperature and pressure relief

valve

- factory pressure test

2bar

6bar

7bar / 90°C

10bar

3bar

6bar

7bar /

90°C

10bar

Other features Water inlet diffuser – prevents cold and hot water from mix-

ing

Water outlet sloped – improves stratification during draw off

and reduces heat loss

Light weight – easy handling

No anode – reduced service requirements

Approvals KIWA

BBA

Guarantee

- inner cylinder

- immersion heaters

- other components

25 years

2 years – excluding the effects of lime scale

5 years – excluding expansion vessel membrane pressure

Figure 4 – Product features

Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si

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ST0109 – C 05/09

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5 Installation

5.1 General 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.

Please note: the following instructions are structured in such a way that individual steps

are described. Not all steps will apply to all products. Figure 5 shows which steps apply

to which cylinder types.

Figure 5 – Chapter reference

Handling – depending on the size of the unit and access to its installation location con-

sideration must be given to the handling of the unit. Please note that handling, installa-

tion 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 cyl-

inder 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 6 bar or above.

Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si

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ST0109 – C 05/09

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5.2 Siting considerations

When choosing a suitable location for the cylinder the following aspects should be con-

sidered:

- 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 heat-

ing system

- frost protection

The Dimplex SCxn 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 (see chapter 10).

The position and orientation of the cylinder should be such that easy access is provided

for servicing the controls and replacing the immersion heater should the need arise.

Ensure that no pipe work 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. If required the

occurrence of frost has to be avoided by means of heating the space in which the cylin-

der is located.

5.3 Cold water supply and discharge pipe work

The required operating conditions of the Dimplex SCxn cylinder range are summarised

in Figure 4. The following instructions have to be followed when installing the cold water

mains supply to the cylinder.

1 The cold water supply to the cylinder must come directly from the cold water mains

after the mains stop valve to the property.

2 The inlet group supplied with the cylinder contains a line strainer, pressure reducing

valve, pressure relief valve, check valves, balanced cold water supply port and a

connection point for the expansion vessel (required for SCxn solar only).

3 The cold water inlet pipe work should have at least an inside diameter of 19mm and

meeting the requirements of the water regulations for the supply of wholesome wa-

ter.

4 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 dis-

charge of the temperature and pressure relief valve as illustrated in Figure 6.

When completing the installation of the discharge pipe work ensure the valve itself is

secured by tightening the screw on the side of the assembly. Loosening the screw

allows the best possible orientation of the valve.

Ce manuel convient aux modèles suivants

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