Cola MARY Manual de instalação, utilização e manutenção - Página 7

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2.5 Advice on flues and connections

Flues must be made from suitable materials and perfectly insulated, with characteristics that prevent

temperature decreases.

The inner walls must be perfectly smooth without any narrowing or protrusions along the entire length, so as not

to create friction or vortices in the smoke which could cause a considerable reduction in draught.

Any cleaning and inspection doors must be perfectly closed during operation.

The flue outlets must be 0.5 m higher than any obstacles located less than 10 m away and must end with

chimney caps or cowls having a useful outlet cross section of at least double that of the flue.

The following two figures give the data regarding the distances and positioning of chimney caps in conformity

with the provisions of UNI 10683/98.

fig 2a Chimney cap positioning and

distances

The chimney outlet must be at least

0.5 m higher than any obstacle

within a radius of 10 m.

UNI 10683/98 tables

Roof

(α)

slope

Distance A

15°

30°

More than 1.85 m

45°

60°

Before connecting stove to an existing chimney, in addition to complying with that described above, make sure

there are no openings or cracks

where air could enter and cause a

temperature decrease affecting the

draught.

Also make sure there are no

hindrances

caused

bodies or a build-up of soot.

The first connection section leaving

the

stove

should

whereas the flue connection to the

chimney (which goes to the chimney

cap) must only enter by a few cm,

so as not to reduce the cross

section of the flue.

If the flue is not perpendicular to the

chimney it is advisable to make the connection with special steel

that allow a maximum slope of 45° .

1.00 m

1.30 m

2.00 m

2.60 m

foreign

vertical,

approx. 0.5 m

Min 0.5m

Obstacle

fig 2b Chimney cap positioning and distances

Roof

(α)

slope

15°

30°

45°

60°

N O

Fig. 3 Stove-chimney connection

Min 0.5m

Less than 5 m

Distance B

Less than 1.85 m

M A X 45 °

N O

Y E S

0.50 m

fittings

Mary