Discharge Of Combustion Products - Desa BG SERIES Operating Instructions Manual

Cabinet warm air heater for oil burner

Table of Contents

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

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120

1175

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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).

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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.