Immergas MINI NIKE X 24 3 E, Instructions Manual

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1.8  TABLES OF RESISTANCE FACTORS AND EQUIVALENT LENGTHS.

TYPE OF DUCT

Resistance

Factor

(R)

Equivalent length  

in m of concentric pipe 

Ø 60/100

Equivalent length  

in m of concentric pipe 

Ø 80/125

Equivalent length  

in m of pipe

Ø 80

Concentric pipe Ø 60/100 m 1

Intake and

Exhaust 16.5

m 1

m 2.8

Intake m 7.1

Exhaust m 5.5

Concentric bend 90° Ø 60/100

Intake and

Exhaust 21

m 1.3

m 3.5

Intake m 9..1

Exhaust m 7.0

Concentric bend 45° Ø 60/100

Intake and

Exhaust 16.5

m 1

m 2.8

Intake m 7.1

Exhaust m 5.5

Terminal complete with intake-exhaust 

horizontal concentric Ø 60/100

Intake and

Exhaust 46

m 2.8

m 7.6

Intake m 20

Exhaust m 15

Intake-exhaust terminal 

horizontal concentric Ø 60/100

Intake and

Exhaust 32

m 1.9

m 5.3

Intake m 14

Exhaust m 10.6

Intake-exhaust terminal 

vertical concentric Ø 60/100

Intake and

Exhaust 41.7

m 2.5

m 7

Intake m 18

Exhaust 14

Concentric pipe Ø 80/125 m 1

Intake and

Exhaust 6

m 0.4

m 1.0

Intake m 2.6

Exhaust m 2.0

Concentric bend 90° Ø 80/125

Intake and

Exhaust 7.5

m 0.5

m 1.3

Intake m 3.3

Exhaust m 2.5

Concentric bend 45° Ø 80/125

Intake and

Exhaust 6

m 0.4

m 1.0

Intake m 2.6

Exhaust m 2.0

Terminal complete with intake-exhaust 

vertical concentric Ø 80/125

Intake and

Exhaust 33

m 2.0

m 5.5

Intake m 14.3

Exhaust m 11.0

Intake-exhaust terminal 

vertical concentric Ø 80/125

Intake and

Exhaust 26.5

m 1.6

m 4.4

Intake m 11.5

Exhaust m 8.8

Terminal complete with intake-exhaust 

horizontal concentric Ø 80/125

Intake and 

Exhaust 39

m 2.3

m 6.5

Intake m 16.9

Exhaust m 13

Intake-exhaust terminal 

horizontal concentric Ø 80/125

Intake and

Exhaust 34

m 2.0

m 5.6

Intake m 14.8

Exhaust m 11.3

Concentric adapter from Ø 60/100 

to Ø 80/125 with condensate trap

Intake and

Exhaust 13

m 0.8

m 2.2

Intake m 5.6

Exhaust m 4.3

Concentric adapter from  

Ø 60/100 to Ø 80/125

Intake and

Exhaust 2

m 0.1

m 0.3

Intake m 0.8

Exhaust m 0.6

Pipe Ø 80 m 1 (with and without insulation)

Intake 2.3

m 0.1

m 0.4

Intake m 1.0

Exhaust 3

m 0.2

m 0.5

Exhaust m 1.0

Complete intake terminal Ø 80, 1 m 

(with or without insulation)

Intake 5

m 0.3

m 0.8

Intake m 2.2

Intake terminal Ø 80 

Exhaust terminal Ø 80

Intake 3

m 0.2

m 0.5

Intake m 1.3

Exhaust 2.5

m 0.1

m 0.4

Exhaust m 0.8

Bend 90° Ø 80

Intake 5

m 0.3

m 0.8

Intake m 2.2

Exhaust 6.5

m 0.4

m 1.1

Exhaust m 2.1

Bend 45° Ø 80

Intake 3

m 0.2

m 0.5

Intake m 1.3

Exhaust 4

m 0.2

m 0.6

Exhaust m 1.3

Divided parallel Ø 80 

from Ø 60/100 to Ø 80/80

Intake and

Exhaust 8.8

m 0.5

m 1.5

Intake m 3.8

Exhaust m 2.9