Viessmann VITOCAL 300-G PRO Installation And Service Instructions Manual page 46

Installation sequence
Hydraulically connecting the primary/secondary...
Use of the 2½" or 3" connection set (accessory)
D
C
A Victaulic 2½" (secondary circuit) or
3" (primary circuit) couplings
B Flexible connecting pipes with anti-
vibration elements
46
800
B A
C Optional: Flange with 2½" (secon-
dary circuit) or 3" (primary circuit)
thread
D Hydraulic line fixings
(cont.)