Viessmann Vitoligno 250-S Installation And Service Instructions For Contractors page 12

Installation sequence
Installing the fan, capacity 40 to 75 kW
Fig. 1
Note
Fan and casing are supplied ready assembled.
Installing the fan, capacity 85 to 170 kW
Fig. 2
Note
Position the intake connector such that female connec-
tions are pointing towards plugs
A
1. Push the fan onto the casing and loosely secure
with nuts.
12
Secure the fan to the projecting flue outlet using
screws.
1.
1.
A
B
2. Secure the cable conduit with a screw.
. 3. Tighten the nuts.
B
2.