docherty SEVERN CORNER Manuale di installazione - Pagina 5

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3.2 Floor protection

Unless the fireplace is installed on a 100% non-flammable floor it will be necessary to stand

the appliance on a non-combustible base of at least 12mm thick and able to withstand the

weight of the appliance and finished construction. It should extend 800mm in front of the

appliance and 400mm to sides and rear of the appliance. However if the floor area is larger

than this it would be good practice to cover the entire internal floor area of the enclosure.

The surface temperature of the finished floor should not exceed 85 deg. C when in normal

operation, otherwise a constructional hearth of 125mm thick will be required. There is a risk

of increased temperatures if correct levels of ventilation are not achieved.

3.3 Chimney fire prevention measures:

Ordinary operation, especially with humid fuel, leads to the settling of ash and tar in the

chimney. Neglecting regular checking and cleaning of the chimney in accordance with Building

Regulations increases the danger of fire. We recommend that the chimney should be swept

twice a year.

In case of ash or tar catching fire in the chimney, please follow this procedure:

• do not under any circumstances extinguish the fire with water as it would create an

abnormal amount of steam and subsequently rip the chimney open

•

if possible, the combustion chamber should be covered with dry sand, which will extinguish

the fire

• close all intakes of air for combustion; if possible, cover the chimney. However, the smoke

must not accumulate back in the house

• contact your nearest fire fighting brigade to assess the situation and the necessity to

report it as a fire fighting emergency

• do not leave the house until the chimney is burned up; regularly check the chimney

temperature and the course of combustion

• contact a chimney service engineer before starting a new fire in the stove to assess the

state of the chimney and also contact the manufacturer of the fireplace stove for inspection.

4. Assembly regulations

4.1 General

The fireplace insert must be installed on the appropriate stand supplied by the manufacturer

or on a brick pedestal on floors with an appropriate load capacity. In case of fireplace inserts

with an enclosure, it is necessary to also consider the weight of the enclosure! If the existing

arrangement does not meet this basic requirement, necessary steps must be taken (e.g.

using a floor plinth/hearh for distributing the load). Make sure that there is enough space for

cleaning the fireplace insert, connecting flue pipes and the chimney unless the chimney can

be cleaned from other method, e.g. cleaning access door designed for this purpose.

4.2 Chimney connection

Before assembling the closed fireplace insert it is necessary to calculate that the chimney

construction will be suitable for the installed fireplace insert nominal output as far as design,

vent size and effective height are concerned.

A suitable chimney (minimum profile, chimney draft, tightness, etc.) is a basic condition for

the proper functioning of the fireplace inserts. You should therefore contact an approved

installer before installing the fireplace insert. Chimney values are included in the attached

technical sheet. A smoke shutter or a draft regulator should be installed for chimneys with

too strong a draft. Such a draft can cause problems during operation, e.g. intensive burning,

high fuel consumption and can also lead to permanent damage of the fireplace insert.

The minimum effective height of the chimney for exhaust gas from the insert is 5m.