Discharge Of Combustion Products - Desa BG Series Technical Information, Installation And Operating Instructions

The flue ducts and the connection to the chimney must be built in conformity with current applicable Norms and
legislation, using rigid ducting, being resistant to high temperature and to mechanical loads, and gas tight. The correct
position for the flue sampling take-off is shown in the drawing.
DIMENSIONS
1
Ø
120
H 1175
The chimney must ensure the minimum depression foreseen by current Technical Standards, considering zero
pressure at the connection between ducting and chimney (see table page 8).
Non insulated flue ducts are a potential source of danger.
Chimneys or flue ducts that are inadequately or badly dimensioned can amplify combustion noise levels and have
a negative influence on combustion parameters.
Joint seals must be made with materials that withstand temperatures of at least 350°C (for example sealants,
mastics, silicone products).
Avoid or at least limit horizontal ducts that must in all cases be sloped upwards.
Use ducts with smooth internal surfaces, in materials that can withstand high temperatures and chemical
corrosion by combustion products, of diameter equal to or greater than the flange on the heater.
Avoid sharp bends and section reductions.
Provide for a stub pipe to allow flue sampling.

DISCHARGE OF COMBUSTION PRODUCTS

COMBUSTION PRODUCTS
Punto di prelievo
SAMPLING POINT
prodotti combustione
1
Ø
120
H 1175
Ø
2 Ø
H
TYPE
1
Ø
120
H 1175
18
1
Ø
120
H 1175