Worcester 28CDI Wartungshandbuch PDF herunterladen (Seite 2)

1.1 Gas Safety (Installation & Use) Regulations 1998: It is the law

that all gas appliances are installed by a competent person in

accordance with the above regulations. Failure to install appliances

correctly could lead to prosecution. It is in your interest, and that of

safety, to ensure compliance with the law.

1.2 The manufacturers notes must not be taken, in any way, as

overriding statutory obligations.

1.3 The compliance with a British Standard or European Norm does

not, of itself, confer immunity from legal obligations.

1.4 The installation of the appliance must be in accordance with the

relevant requirements of the Gas Safety Regulations, current IEE

Regulations, Building Regulations, Building Standards (Scotland)

and local water bye-laws.

1.5 The installation should follow the recommendations of the

following British Standards unless otherwise indicated:

BS6798 - Specification for the installation of gas fired hot water

boilers of rated input not exceeding 60kW (Gross).

BS5449 - Central heating for domestic premises.

BS5546:1 - Installation of gas hot water supplies for domestic

purposes.

BS5440/1 - Flues and ventilation for gas appliances of rated input

not exceeding 60kW (Gross): Flues.

BS5440/2 - Flues and ventilation for gas appliances of rated input

not greater than 60kW (Gross): Air supply.

BS 5482 - Domestic butane and propane gas burning installations -

permanent dwellings.

BS6891 - Installation of low pressure gas pipework installations up

to 28mm (R1).

BS6700 - Domestic water supply in buildings.

BS7593 - Water treatment in domestic heating systems.

1.6. To ensure that the installation will perform to the highest

standards, the system and components should conform to any

other relevant standards.

1.7. 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.

1.8. In accordance with the requirements of COSSH the appliance

does not contain any substances which are harmful to health.

1.9. 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.

1.10. 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.

1.11. The advice and instructions given in this document covers, as

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

Worcester Technical Department, Telephone: 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. General Information

2.1.1. The appliance is set to provide the maximum output for

domestic hot water and a central heating load of 24kW (24/28CDi)

or 27.5kW (35CDi II). The hot water flow rate is limited to a nominal

9 l/min (24CDi) or 10 l/min (28CDi) or 12 l/min (35CDi II) at a

maximum temperature rise of 40°C.

2.1.2. The sanitary water section of the appliance is suitable for

water mains pressures of up to 10bar.

2.1.3. Conversion kits are available to convert the appliance from

Natural Gas to Propane operation and vice versa. The kits include

conversion instructions.

2.2 Electrical Supply

Mains supply: 230V ~ 50 Hz. 180Watts.

External fuse: 3A (BS 1362). Internal fuses: T 2A (F1), and T 1.25A (F2).

2.3 Gas Supply

Check the data plate (located on the inner cover of the appliance) to

ensure the appliance has been set up for the correct gas supply. The

appliance can be set up for either of the following gases: Natural

gas (G20) or Propane (G31). A conversion kit including

instructions is available to change the appliance from one gas to

the other.

The boilers require a gas flow in m

/h of:

NG (G20) LPG (G31)

24CDi 2.9 1.13

28CDi 3.3 1.3

35CDi II 4.16 1.6

The meter governor or regulator should deliver a dynamic pressure

of 20mbar for natural gas or 37mbar for propane at the appliance,

which is about 18.5mb or

35.5 mbar at gas valve inlet pressure test point.

The complete installation, including the gas meter (G20), must be

tested for soundness and purged. Refer to BS 6891.

2.4 Packing

The appliance and flue components are packed in separate cartons.

2.5 Installation

The appliance is suitable for indoor installations only.

A wall-spacing frame to allow pipe runs behind the appliance is

available.

An inlet water filter is fitted to the mains cold water inlet on the

appliance.

The appliance is fitted with a system filling link assembly. See Page 8.

The appliance is suitable for connection to a sealed or open vented

primary system (35CDi II SEALED SYSTEM ONLY).

2. General Information

1. Installation Regulations

11. Electrical ...................................................................... Page 10

12. Installation.................................................................... Page 13

13. Commissioning ............................................................ Page 17

14. Instructions to the User .............................................. Page 19

15. Inspection and Servicing ............................................ Page 20

16. Replacement of Parts .................................................. Page 21

17. Short Parts List ............................................................ Page 27

18. Operational Flow Diagrams........................................ Page 29

19. Fault Finding ................................................................ Page 31

20. Conversion Instructions.............................................. Page 39

1. Installation Regulations .............................................. Page 2

2. General Information .................................................... Page 2

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

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

5. Siting the Flue Terminal .............................................. Page 7

6. Air Supply .................................................................... Page 7

7. Sealed Primary Systems ............................................ Page 8

8. Gas Supply.................................................................... Page 8

9. Open Vent Primary Systems ...................................... Page 9

10. Domestic Hot Water .................................................... Page 9

Contents

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