Two Pipe System-Vertical Exhaust/Horizontal Air Intake; Two Pipe System-Vertical/Horizontal Installations - Viessmann Vitocrossal 200 CM2 Series Installation Instructions Manual

Venting Options - Stainless Steel / PP
Two Pipe System - Vertical Exhaust / Horizontal Air Intake
Two Pipe System - Vertical / Horizontal Installations
Maximum allowable equivalent length - Stainless steel / PP
Boiler Models CM2-186, -246, -311
Flue gas in. (mm)
combustion air in. (mm)
Max. equivalent length
a+b [ft. (m)]
Note: If flexible vent or air-intake pipe are used, the total
max. equivalent length will be reduced by 25%
[150 ft. (45 m)]
42
Flue
8 (200) 8 (200)
6 (150) 8 (200)
200 (60)
Vitocrossal 200 CM2 Installation Instructions
Air
10 (250) 10 (250)
6 (150) 10 (250)
Contact Viessmann for vent length calculation
a - Equivalent length (exhaust)
b - Equivalent length (air intake)
Note: See table below.
12 (300) 12 (300)
6 (150) 12 (300)