Immergas MAGIS COMBO 4 V2 Instructions And Recommendations page 23

1.18 TABLES OF RESISTANCE FACTORS AND EQUIVALENT LENGTHS OF "GREEN RANGE" FLUE
SYSTEM COMPONENTS
TYPE OF DUCT
Concentric pipe 80/125 Ø m 1
90° concentric bend 80/125 Ø
Concentric bend 45° Ø 80/125
Terminal complete with concentric horizontal intake-exhaust
Ø 80/125
Terminal complete with concentric vertical intake-exhaust
Ø 80/125
90° concentric bend Ø 80/125 with inspection
Stub pipe with inspection Ø 80/125
Equivalent
Resistance
length
factor
in m of concentric
(R)
pipe Ø 80/125
2,1
3,0
2,1
2,8
3,6
3,4
3,4
1
1,4
1
1,3
1,7
1,6
1,6
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