Mcz AirSystem 70 DX User Manual download pdf (Page 8)

Chapter 2

INSTALLATION AND USE MANUAL

page 8

45° max

2.4. CONNECTION TO THE FLUE PIPE

The connection to the flue pipe is a very important element. The

connection must be made with a great deal of care; in the event of

erroneous or anomalous construction, it is extremely difficult to remedy

without damaging the hood liner. In addition, the connection is made in

a part of the stove where temperatures are very high, and for this

reason it is important to use materials that are capable of resisting heat

and also the acidity of the fumes produced by combustion.

Before beginning work, please note the following:

• The connecting pipe must have a maximum slope of 45

degrees. This is to avoid excessive deposit of condensation

produced in the initial phases of lighting the fireplace stove,

and/or the excessive accumulation of creosote. It also keeps

the release of smoke from being slowed down.

• The connections must be made of stainless steel 316

with a minimum thickness of 10/10, or in aluminised

steel, minimum thickness 20/10. It is prohibited to use

stainless steel or aluminium hoses as they compromise

the safety of the connection and are subject to tears

and gaps, causing leakage of smoke.

• The components making up the connecting pipe must be

perfectly sealed.

• The joint to the flue pipe must not be too long (to avoid

obstructions), nor too short (to avoid smoke leakage).

If metal connecting pipes are used, they must be

insulated with suitable material such as ceramic fibre

matting, to avoid deterioration of the masonry and of

the decorative hood liner.

IMPORTANT!

Any increase in the section of the connecting pipe

must start immediately above the hood of the

fireplace and not along the flue pipe section.

2.5. FLUE PIPE

The flue pipe is a fundamental element in discharging smoke and

therefore must have the following requisites:

• It must be waterproof and thermally insulated.

• It must be made with heat resistant materials, resistant to

combustion products and any condensation.

• It must have a vertical slope with axis deviations not over 45°

and without narrowing.

• It must meet the requisites indicated in the technical table for

the internal chimney section and height.

• It must preferably have a circular interior section.

• If pre-existing and previously used, it must be cleaned.

The flue pipe is of primary importance for the correct

functioning and safety of your fireplace stove.

Example of fireplace stove connection

Illustration of a correctly constructed flue

pipe with a chamber and sealed door for

solid combustion product collection and

discharge at the foot of the external

ascending segment.

Smoke

connection

Ceramic fibre

insulation

Flue pipe

Hood grille

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