Beretta POWER PLUS Installation Instruction page 31

MAXIMUM LENGTH OF THE PIPES
The maximum equivalent length of the sum of the 50 mm
intake pipes and flues is 30 metres, with a pressure drop
of 2 metres for each 90° bend.
Installation of a single boiler with flue passing inside
a compartment (open flue operation).
For this type of operation, make sure that the size of the
compartment complies with the standards in force.
The figure on the side shows the minimum dimensions
of the compartment when passing one flue (model 50 M)
or two flues (models 100 M, 100 M DEP, 100 S or 100 S
DEP).
b
Parameter 36 (see page 59) needs to be set based
on the type of gas and the length of the chimney.
model 100 M
model 100 M DEP
Minimum dimensions of the compartment
for the passage of three flues, diameter 50 mm
Square compartment
Ø 160 mm
20 50 20 50 20
Rectangular compartment
160 mm
50 20 50 20
20
model 50 M
Minimum inside dimensions of the compartment
for the passage of 1 flue, diameter 50 mm
Circular compartment
71 mm
50mm
models 50 M + 100 S
models 50 M + 100 S DEP
Minimum dimensions of the compartment
for the passage of three flues, diameter 50 mm
Square compartment
20 50 20 50 20
20
20
160 mm
Square compartment
63 mm
50mm
Rectangular compartment
230 mm
50 20 50 20
20 50 20
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