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Vitocrossal 200, CM2 400, 500 and 620 Installation
Venting Options - Stainless Steel / PP
Two Pipe System - Vertical Exhaust / Horizontal Air Intake
Flue
Air
Boiler Models CM2 400, 500 and 620
Flue gas in. (mm)
combustion air in. (mm)
10 (250)
8 (200)
10 (250)
10 (250)
12 (300)
8 (200)
12 (300)
12 (300)
Max. equivalent length
a+b [ft. (m)]
200 (60)
Contact Viessmann for vent length calculation
Maximum allowable equivalent length - Stainless steel / PP
Two Pipe System - Vertical / Horizontal Installations
Note:
If flexible vent or air-intake pipe are used, the total
max. equivalent length will be reduced by 25%
[150 ft. (45 m)]
a - Equivalent length (exhaust)
b - Equivalent length (air intake)
Note:
See table below.