Mareli Systems PS 24, Assembly And Exploitation Manual

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Mareli Systems

3.3 Assembly of the duct components.

Duct components and pipes

For the assembly of the duct pipes the use of non-flammable materials, resistant to the flammable 

products and condensation is obligatory. The assembly must be performed in such a manner so 

it guarantees the airtight sealing and prevents condensation. If possible, avoid adding horizontal 

sections. Direction shift is done by using knee joints with a max angle of 45˚.

For heating devices equipped with a smoke ventilator, i.e all of the “MARELI” stoves, the follow-

ing instructions must be observed:
• 

Horizontal sections must have a minimum incline of 3° upwards;

• 

The length of the horizontal sections must be as short as possible, but without exceeding 3 

m; 

• 

More than four direction shifts are forbidden, including the cases where a T-shaped element 

is used;

• 

The duct components must be airtight and to be insulated if extending outside the premises 

in which the fireplace is installed;

• 

The duct components must allow a soot cleaning;

• 

The duct components must have a constant section. A section change is allowed only in the 

chimney joint;

Chimney

The chimney or the duct component must conform with the following requirements: to be air-

tight, waterproof and properly insulated, to be constructed with materials resistant to the normal 

mechanical wear and to the heat coming from the combustion products and condensation. 
• 

To be kept away from flammable materials. 

The recommended chimney draft at work - from 12-20 Pa.
Attention!!!  In case of a fire hazard turn off the product from the display. This will stop the oxy-

gen flow to the product.

3.4 Types of connection to the chimney