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HydroTherm 70
Инструкция по эксплуатации Страница: 13

MCZ HydroTherm 70 Инструкция по эксплуатации онлайн [13/45] 280340

INSTALLATION AND USE MANUAL

Chapter 2

page 13

2.6. COWL

If underestimated, it is a severe impediment to correct "chimney

system" operations.

Flue pipe draught also depends on its cowl.

Therefore, if hand made, its four exhaust sections must correspond to

more than twice the internal section of the flue pipe.

Having to exceed the peak of the roof, the cowl will be

exposed to wind, therefore an industrial type is recommended.

The cowl must meet the following requisites:

 It must have an internal section equal to that of the chimney.

 It must have a useful output section not less that double that

of the internal section of the flue pipe.

 It must be built to prevent rain, snow and any foreign objects

from getting into the flue pipe.

 They must be installed to guarantee adequate smoke

dispersion and out of the reflux area where negative pressure

forms.

For paired flue pipes, the cowl for solid combustion

and the one for the upper floor must be at least 50cm

higher than the other to avoid pressure transfers

between paired flues.

The cowl must not have obstacles within 10 m such as

walls, roof slopes and trees. Otherwise, raise it at least

1 m over the obstacle and, in the event of other

nearby cowls, keep them at least 2 m away. In any

case, the cowl must exceed the peak of the roof by at

least 1m.

An industrial cowl,

with prefabricated

sections fitting

together, allows

optimal disposal of

the flue gases.

A traditional

handmade cowl.

The right exhaust

section must be at

least twice the

internal section of

the flue pipe, 2.5

times is ideal.

Steel cowl for flue pipe

with internal smoke

deflector cone.

MCZ HydroTherm 70 Инструкция по эксплуатации онлайн [13/45] 280340

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