completely hermetically sealed and remain so after any cleaning. Make sure everything is put
together correctly again and check the condition of the seal.
Figure 2. Cleaning piece
The connection between the pipes should always be with the male connection facing down(-
Figure 4).
It is advisable to avoid prolonged horizontal pipe connections to the chimney. If this is not pos-
sible, the pipes should not be placed at a downward angle, but at an upward slope of at least
5%.(Figure 5). The horizontal placement of the pipe should not exceed 2m in length.
It is not recommended to run the pipes from the pellet boiler directly to the chimney with a
horizontal pipe longer than 1m.
Figure 3. Figure 4.
5.3. INSULATION AND DIAMETER OF HOLES IN THE ROOF
When the position for installing the boiler is known, it is necessary to make a hole for the pas-
sage of the ue pipes. This varies depending on the type of installation, the diameter of the
chimneys and the type of wall or roof through which it must be led. The insulation must be of
mineral origin (rock wool), with a nominal density of more than 80 kg/m2.
The perfect draft depends mainly on the chimney, which must be free of obstacles such as
bottlenecks and / or various corner connectors. The elbows should be at an angle of 30 °, 45 °
or 90 °. The 90 ° elbows should be in three parts(Picture 6).
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