Worcester 26CDi Xtra Manual de servicio descargar pdf (Pagina 2)

1.1 Gas Safety (Installation and Use) Regulations 1998,

as amended, all gas appliances must be installed by a

competent person in accordance with the above regulations.

Failure to install appliances correctly could lead to prosecution.

1.2 The manufacturer’s notes must not be taken, in any way, as

overriding statutory obligations.

1.3 The compliance with a British Standard does not, of itself,

confer immunity from legal obligations. In particular the

installation of this appliance must be in accordance with the

relevant requirements of the Gas Safety (Installation and Use)

Regulations 1998 as amended, current IEE Wiring Regulations BS

7671, local Building Regulations, Building Standards (Scotland)

(Consolidation) and bylaws of the local Water Company. Health

and Safety Document No. 635 (Electricity at Work Regulations). It

should be in accordance with the relevant recommendations of

the following British Standards:

BS 6798: Specification for installation of gas fired hot water

boilers of rated input not exceeding 60 kW.

BS 5449: Central Heating for Domestic Premises.

BS 5546: Installation of gas hot water supplies for domestic purposes.

BS 5440:1: Flues and Ventilation for Gas Appliances of Rated

Input Not Exceeding 60 kW: Flues.

BS 5440:2: Flues and Ventilation for Gas Appliances of Rated

Input not Exceeding 60 kW: Air Supply.

BS 6891: Installation of Low Pressure Gas Pipework Installations

up to 28mm (R1).

BS 5482:1 & 2: Installation of LPG appliances.

BS 6700: Domestic Water Supply in Buildings.

BS 7593: Water Treatment in Domestic Heating Systems.

1.4 To ensure that the installation will perform to the highest

standards, the system and components should conform to any

other relevant British Standards in addition to those mentioned

in the instructions.

1.5. The appliance and/or components conform, where

applicable, with the Essential Requirements of the Gas Appliance

Directive, the Boiler Efficiency Directive, the EMC Directive and the

Low Voltage Directive.

1.6. In accordance with the requirements of COSSH the appliance

does not contain any substances which are harmful to health.

1.7. Product Liability regulations indicate that, in certain

circumstances, the installer can be held responsible, not only for

mistakes on his part but also for damage resulting from the use of

faulty materials. We advise that, to avoid any risk, only quality

approved branded fittings are used.

1.8. LPG Installation. The appliance shall not be installed in a room

or internal space below ground level when it is intended for use

with LPG. This does not preclude the installation into rooms which

are basements with respect to one side of the building but open to

the ground on the opposite side.

1.9 The boiler section contained within this appliance is a

condensing boiler. When in use, the boiler will operate at high

efficiency, emitting a white plume of condensation from the flue

terminal.

A condensate drain point is provided on the appliance.

1.10 The advice and instructions given in this document covers,

as far as possible, the foreseeable situations which may arise.

Contact Worcester on 08705 266241 for advice on specific

installations.

The Benchmark initiative is the new code of practice

to encourage the correct installation, commissioning and servicing

of domestic central heating boilers and system equipment.

The 'checklist' is a vital document that must be completed by

the installer at the time of installation. It confirms that the

boiler has been installed and commissioned according to the

manufacturers instructions.

Without the completion of the checklist, manufacturers may refuse

to respond to a call-out from a householder, who will be advised

that he or she must call back the installer, who has not fulfilled his

obligations to record the information required by the initiative.

It is important that:

The services and the system are properly flushed as specified.

The User is clearly instructed on the correct operation of the

appliance.

The benefits of regular servicing are explained - to maintain the

efficiency and extend the life of the appliance.

2.1 This appliance is not suitable for external installation.

2.2 The appliance controls are set to provide a maximum output

of 26.0 kW in the condensing mode and 24.0 kW in the non-

condensing mode for the domestic hot water and central heating load.

2.3 The control circuit provides direct burner ignition. A pilot

light is not used.

2.4 PRINCIPAL APPLIANCE COMPONENTS

See fig. 1.

A low thermal capacity gas to water main heat exchanger

connected to a secondary high efficiency heat exchanger.

A water to water heat exchanger to provide domestic hot water.

Fully modulating controls in the central heating and domestic

hot water modes of operation.

An expansion vessel, pressure gauge and pressure relief valve.

A by-pass for the central heating system.

Temperature safety cut-out controls.

A water flow regulator.

A standard horizontal flue assembly giving flue lengths from

100mm to 1000mm.

Optional extension flue kit to provide for flue lengths of up to

2000mm.

An internal system filling loop assembly.

Optional facia mounted electronic or mechanical programmers

or a radio controlled room thermostat.

An optional wall spacing frame to allow pipe runs behind the

appliance.

2.5 ELECTRICAL SUPPLY

Mains supply: 230V~, 50 Hz. , 180 watts.

External fuse: 3A (BS 1362).

Internal fuses: T 2A (F1), and T 1.25A (F2).

1. Installation Requirements

10. Installation.................................................................... Page 14

11. Commissioning ............................................................ Page 19

12. Handover ...................................................................... Page 22

13. Inspection and Servicing ............................................ Page 23

14. Replacement of Parts .................................................. Page 25

15. Short Parts List ............................................................ Page 34

16. Operational Flow Diagrams........................................ Page 36

17. Fault Finding ................................................................ Page 39

18. Conversion Instructions.............................................. Page 47

1. Installation Regulations .............................................. Page 1

2. Introduction.................................................................. Page 1

3. Technical Data .............................................................. Page 4

4. Siting the Appliance .................................................... Page 6

5. Siting the Flue Terminal .............................................. Page 8

6. Air Supply .................................................................... Page 8

7. Sealed Primary Systems ............................................ Page 9

8. Domestic Hot Water ....................................................Page 10

9. Electrical ........................................................................Page 10

Contents

2. Introduction

1 2 3 4 5 6 7 ... 49 50

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Worcester 26CDi Xtra Manual de servicio Pagina 2

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