49
5773 597 - 04
Vitocrossal 200, CM2 400, 500 and 620 Installation
Venting Options - Stainless Steel / PP
Single Pipe System - Vertical / Horizontal Installations
Maximum allowable equivalent length - Stainless steel / PP
Multiple Boiler Installations
Boiler Models CM2 400, 500 and 620
Flue gas in. (mm)
combustion air in. (mm)
10 (250)
8 (200)
10 (250)
10 (250)
12 (305)
12 (305)
Max. equivalent length
a+b [ft. (m)]
200 (60)
Contact Viessmann for vent length calculation
Note:
If flexible vent or air-intake pipe are used, the total max. equivalent length will be reduced by 25% [150 ft. (45 m)].
Horizontal vent termination
Vertical vent termination
4 in. min.
(100 mm min.)
6 in. min. (150 mm min.)
36 in. min.
(915 mm min.)
Note:
36 in. (915 mm) minimum distance apart for
vent
terminations.
Top view
