Connections On The Water Side - Viessmann Vitoligno 300-C Installation And Service Instructions For Contractors

Installation sequence

Connections on the water side

D
Fig. 15
Boiler return Rp 1
A ½
Boiler flow Rp 1
B ½
Safety equipment block connection R 1
C
connections)
Drain
D
Note
Only connect controlled heating circuits with mixer.
Remove the protective caps from the connectors.
Install the safety lines.
Safety equipment block installation instructions
Permiss. operating pressure
Test pressure
22
C B A
(safety
½
Note
Equip boilers with a safety valve that is type-tested to
TRD 721 [or local regulations] and is marked accord-
ing to the system version.
Check the fittings on the heating water and DHW side
for leaks and retighten if required.
3 bar (0.3 MPa)
4 bar (0.4 MPa)