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

Vitocrossal 200 CM2 Installation Instructions
Two Pipe System - Vertical Exhaust / Vertical Air Intake
The vent diameter of CM2 boilers can be reduced to 6" (150 mm) nominal vent size. See the following table for max.
vent length applicable to vent reduction diameter.
Model Reduced Flue
vent
CM2-186 6" (150 mm)
CM2-246 6" (150 mm)
CM2-311 6" (150 mm)
Air-intake
to pipe
7 7
6" (150 mm)
6" (150 mm)
6" (150 mm)
Venting Options - Stainless Steel / PP
a - Equivalent length (exhaust)
b - Equivalent length (air intake)
Max. Flue vent Max. Air-intake
length "a" pipe length "b"
85 ft. (26 m) 65 ft. (20 m)
Can not be reduced (See tables on page 42, 44)
Input derate %
0
45