Immergas EOLO Mini S Instruction Booklet page 6

• Resistance factors and equivalent lengths. Each fl ue ex-
traction system component is designed with a resistance
factor factor based on preliminary tests and specifi ed in the table factor based on preliminary tests and specifi ed in the table
below.  e resistance factor for individual components
does not depend either on the type of boiler on which
it is installed or the actual dimensions. It is based on the
temperature of fl uids conveyed through the ducts and
therefore varies according to applications for air intake
or fl ue exhaust. Each component has a re sist ance cor re -
spond ing to a specifi c length in metres of pipe with the
same diameter; the so-called equivalent length. All boilers
have a max i mum re sist ance factor based on testing at 100.
 e max i mum admissible re sist ance factor cor re sponds
to the resistance de tect ed with the max i mum ad mis si ble
pipe length with each type of Ter mi nal Kit in stalled.  is
in for ma tion enables cal cu la tions to verify the possibility
of various con fi g u ra tions of fl ue extraction systems.
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