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Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Venting Options - Stainless Steel/PP(s)
Individual Burner Intake Ducting
The combustion air intake ducting equivalent length must be
calculated based on the single combustion air intake pipe with
the longest equivalent length (as shown in the illustration with
grey fill).
Refer to pages 66, 68, 70 and 71 to determine maximum
equivalent lengths.
For roof and vent spacing refer to page 69.
For combustion air intake duct connection to the
boiler, refer to the “Combustion Air Intake Kit”
Installation Instructions.
