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When the length of the ue duct is less than 2m, use the ue duct of φ75mm in diameter.
When the length of the ue duct is between 2m and 5m, use the ue duct of φ100mm in diameter.
When the length of the ue duct is longer than 5m, use the ue duct of φ125mm in diameter.
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Check out that the oor is robust and at inammables such as concrete and the circumference is
also made of inammables.
Check out whether rainwater inltrates into the perforation of the exhaust/inhale pipes.
Check out whether the boiler is connected to the ground.
Check out that the boiler and the pipes is in the good heat insulation in order to prevent freezing.
The example of a standard installation
When extending the aluminum flue duct
Checking points after installation
Front View
Wall
Inflammable material side Inflammable material
Exhaust
inhale pipe
Exhaust /
inhale pipe
30cm or more
60cm or more
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B
O
I
L
E
R
F
insulation
nonflammable
E
F
DC
A
B
Ground
Over 20cm
Ground View
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