Viessmann Vitocrossal Installation Instructions Manual page 11

Fitting the gas supply pipe (accessories)
Fig. 8 Boilers up to 80 kW
Fig. 9 Boilers up to 80 kW
(cont.)
Fig. 10 Boilers from 120 kW
Fig. 11 Boilers from 120 kW
a = Height between top edge of gas pipe and top edge
of base rail of the boiler max. 60 mm
Gas supply pipe and room sealed operation
When routing the gas supply pipe for room sealed
operation take into account the position of the air hose.
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