Bedienungsanleitung Charnwood LA45 (Seite 12 von 18) (Englisch)

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HEARTH AND FIRE SURROUND

The appliance must be installed on a fireproof hearth and must

be situated at least 300 mm (12 inches) from any combustible

material. The positioning of the appliance and the size of the

hearth are governed by building regulations for Class 1

appliances. These building regulations state that the hearth

must extend in front of the appliance by at least 300 mm (12

inches) and to the sides by at least 150 mm (6 inches). If in

doubt as to the positioning of the appliance expert advice

should be sought either from the supplier or the local building

inspector.

The fire surround area shown in Fig. 7 must be of non -

combustible material such as tile or brick. If marble is used it

must be slabbed on concrete. Resin based conglomerate

marble is NOT suitable: the resin may not stand the

temperature.

PREPARATION OF FIREPLACE

Before fitting the appliance into an existing fireplace remove

the fireback and any loose in-fill material.

The hearth, surround and opening for the appliance must

conform with Figs. 6 and 7. The flat area around the opening

must be a minimum of 750mm wide and 660mm high. Ensure

that the hearth and the base in the opening are flat, level, and

at right angles to the surround.

Make two holes in the chimney breast, one in the front to give

access for infilling and fixing the flue pipe, and one in the side

to give access for the pipework.

CENTRAL HEATING SYSTEM

The central heating system must comply with BSEN

12828:2003, BSEN 12831:2003, and BSEN 14336:2004. If

the system is to be a combined heating and domestic hot

water system then a double feed indirect hot water storage

cylinder to BS:1566-1:2002 should be used. In order to

prevent the build up of scale and corrosion a suitable inhibitor

should be used. The system must be correctly vented as

shown in Figs. 8 and 9. The height differential between the

header tank and the appliance must not exceed 15.2 metres

(50 feet).

If all four boiler tappings are used then, if possible, diagonal

pairs should be connected for domestic hot water and central

INSTALLATION INSTRUCTIONS charnwood

Central Heating Flow

Central Heating Return

Drain Cock at Lowest Point

Drain Cock

GravIty Return 28mm

Gravity F low 28mm

Indirect Hot Water Cylinder

Cold Water Tank

Overflow

Feed and Expansion Tank

22mm Open Vents

Gravity Radiator

Circulating Pump

Minimum Return

Thermostat

Overflow

Domestic Hot Water Draw Off

Fig. 8. Typical Central Heating & Hot

Water System Using 4 Boiler Tappings

Central Heating Return

Drain Cock at Lowest Point

Drain Cock

Gravity Return 28mm

Gravity F low 28mm

Indirect Hot Water Cylinder

Domestic Hot Water Draw Off

Cold Water Tank

Overflow

Feed and Expansion Tank

22mm Open Vents

Gravity Radiator

Circulating Pump

Injector Tee

Minimum Return Thermostat

Central Heating Flow

Fig. 9. Typical Central Heating & Hot

Water System Using 3 Tappings

Gravity Return

(28mm Pipe)

Central Heating Return Common Return to Boiler

(28mm Pipe)

Fig. 10. Injector Tee.

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Charnwood LA45 Seite 12

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