Bedienungsanleitung Worcester-Bosch GB162-50 (Seite 9 von 72) (Englisch)

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Regulations and directives

6720813171 (2016/05) 9

Hand over

Please complete the appropriate sections on completion of the

installation and commissioning in the relevant log book an hand it over to

the end user.

3 Regulations and directives

3.1 Designated use

The boiler may only be used to heat up water for heating systems and/or

domestic hot water (DHW) systems.

The boiler can be installed either as a single system or as part of a

multiple system (cascade system). A cascade system enables several

boilers of this type to be connected together, where a maximum of

8 boilers with a total capacity of 800 kW can be connected together on a

floor surface of approximately. 2 m².

Special cascade units (accessories) have been developed to enable this

boiler to be installed in a cascade system. Every cascade unit includes an

installation frame, horizontal headers, connection pipes for the boiler,

main gas pipe and vertical low loss header.

Cascade units are available for installing the boilers in line or back-to-

back. These cascade units make installing a cascade system easier and

less labour intensive. Please contact your dealer or the manufacturer for

further information about cascade systems.

The construction and operating behaviour of the boiler are in

accordance with the requirements listed:

3.2 Boiler room

▶ Observe all statutory building regulations applying to the place of

installation.

The boiler can only be mounted to the wall or installed in a cascade

system. When installed in a room with thin walls or a thin floor,

resonating noise may occur. Install noise reducing parts if required.

3.3 Combustion air flue gas connection

If the boiler is operated dependent on room air, the installation room

must have the required air vents. Do not obstruct these vents. The air

vents must always be free.

3.4 Quality of the heating system water

Thoroughly clean and flush the system before filling it. Use only

unsoftened mains tap water when filling or topping up the system. The

use of dirty water will lead to build-ups of sludge and corrosion, which

can in turn result in malfunctioning of the boiler and damage to the heat

exchanger.

Inhibit the system with the correct dosage of an approved product.

Do not treat the water with antifreeze or water softeners.

The pH of the heating system water must be between 7 and 8.5. If this is

not the case, please contact Worcester Customer Service before

proceeding.

3.5 Quality of the pipework

When using plastic pipework in the heating system, e. g. for floor

heating, it has to be oxygen-tight according to relevant UK-Standards. If

the plastic pipes do not comply with these standards, the system parts

must be isolated using heat exchangers.

3.6 Maintenance schedule

The activities to be included in an annual inspection and maintenance

contract can be found in the service section of this manual ( pages 48

and 52).

If inspection reveals a situation which makes maintenance activities

necessary, these activities have to be carried out ( chapter 13

“Maintenance”, page 48).

3.7 Applicability of regulations

Changes or amendments to the regulations also apply at the time of

installation and have to be complied with.

The appliance complies with the basic requirements of

the relevant European directives.

Conformity has been substantiated by the proper

documents which - together with the declaration of

conformity - are filed with the manufacturer.

CAUTION:

Damage to the installation due to frost.

▶ Install the heating system in a room which is free from

frost.

WARNING:

Fire hazard due to flammable materials or liquids.

▶ Do not store any flammable materials or liquids in the

direct vicinity of the boiler.

CAUTION:

Boiler damage due to contaminated combustion air or

contaminated air in the boiler room.

▶ Never use the boiler in an environment which

contains lots of dust or aggressive chemicals. Such

as spray shops, hairdresser's shops, agricultural

enterprises (manure) or locations where

trichloroethylene or hydrogen halides (e.g.

contained in aerosols, certain adhesives, solvents or

detergents, paints) and other aggressive chemicals

are used or stored.

▶ In such situations you must opt for a room sealed

installation.

CAUTION:

Boiler damage due to corrosion.

▶ If the boiler is used in systems with gravitation

circulation or in open systems, the boiler circuit must

be isolated from the rest of the system by means of a

(plate-type) heat exchanger.

NOTICE:

Damage to the installation due to insufficient or

improper cleaning and maintenance.

▶ Inspect and clean the heating system as required

once a year.

▶ Carry out maintenance as required. Immediately

remedy faults. This will avoid further damage to the

system.

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