Manual Charnwood C Five Duo (page 11 of 21) (English)

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INSTALLATION INSTRUCTIONS

CHIMNEY

In order for the appliance to perform satisfactorily the chimney

must give sufficient draw when warm (minimum of 12pa/0.05”

wg). The height of the chimney must comply with local

building regulation requirements. The internal dimensions

of the chimney MUST NOT BE LESS THAN 125mm (5”)

If an existing chimney is to be used it must be swept and checked,

it must be in good condition, free from cracks and blockages, and

should not have an excessive cross sectional area. If it was previously

used by an open fire then the chimney should be swept one month

after installation to clear any soot falls which may have occurred due

to the difference in combustion between the stove and the open fire.

If you find that the chimney is in poor condition then expert advice

should be sought regarding the necessity of having the chimney lined.

If it is found necessary to line the chimney then a lining suitable for

Solid Fuel must be used.

If there is no existing chimney then a prefabricated block chimney

or a twin walled insulated stainless steel flue to BSEN 15287-1:2007

can be used either internally or externally. These chimneys must be

fitted in accordance with the manufacturers instructions and Building

Regulations.

Single wall flue pipe is suitable for connecting the stove to the chimney

but is not suitable for using for the complete chimney. If it is found

that there is excessive draw in the chimney then a draught stabiliser

should be fitted.

It is important that there is sufficient draw in the chimney and that the

chimney does not suffer from down-draught. When the chimney is

warm the draw should be not less than 1.25mm (0.05”) water gauge

(12 Pa). If in doubt about the chimney seek expert advice.

HEARTH AND FIRE SURROUND

The stove must stand on a fireproof hearth and must not be situated

closer than the minimum distance from combustible materials (see

specification table) to the sides or rear above hearth level unless

adequately fireproofed in accordance with local building regulations.

The hearth must be of fireproof material and at least 12mm (1/2in.)

thick if the stove is attached to a store stand or high legs. If the store

stand or high leg option is fitted then the hearth temperature will not

exceed 100°C and so a 12mm thick fireproof hearth is adequate.

If the standard leg option is used then the hearth temperature can

exceed 100°C and therefore a 12mm thick hearth is not suitable and

a constructional fireproof hearth is required. The positioning of the

stove 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 stove by at least 225mm (9 in.)

and to the sides of the stove by at least 150mm (6 in.). When the fire

door is open, it extends beyond the flat front of the stove by 365mm

(C Four duo) and 436mm (C Five Duo).

If in doubt as to the positioning of the stove, expert advice should be

sought either from the supplier or the local building inspector. The

fireplace must allow good circulation of air around the appliance to

ensure that maximum heat is transferred to the room and also to

prevent the fireplace from overheating. A gap of 150mm (6”) each

side and 300mm (12”) above the appliance should give sufficient air

circulation. If a wooden mantelpiece or beam is used in the fireplace

it should be a minimum of 460mm (18”), and preferably 600mm

(24”) from the appliance. In some situations it may be necessary to

shield the beam or mantelpiece to protect it.

The appliance should be installed on a floor with adequate load-

bearing capacity. If an existing construction does not meet this

requirement then please take suitable measures to achieve this. (e.g.

load distributing plate.)

CONNECTIONS TO FLUES

The C Five and C Four Duo must be connected to the flue using flue

pipe of 125mm (5”) diameter.

If using twin wall flue, the flue collar must be shielded to protect

exposed combustible material. This can be done with a shielded

starter length of flue.

The flue spigot can be shielded with starter length flue see fig. 3

Fig. 3 Shielding the flue spigot

There are several ways of connecting the stove to the flue. These are

illustrated in Figs. 5 to 8.

If the top flue connection or optional vertical rear flue connector is

used then the chimney may be swept through the appliance.

Horizontal lengths of flue must be kept to a minimum and should not

be more in length than the flue diameter.

Shielded starter length of flue

Flue collar

Twin wall flue

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Charnwood C Five Duo Manual

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