Making The Hydraulic Connections - Viessmann Vitocal 300-G Pro Series Installation And Service Instructions For Contractors

Making the hydraulic connections

Overview of hydraulic connections
271 340 300
Fig. 18 Type BW 302.D090 to BW 302.D180
176
367
368
Fig. 19 Type BW 302.D230
Primary circuit flow (inlet):
A
Victaulic 3 (DN 80)
"
Secondary circuit flow (outlet):
B
Victaulic 2 (DN 65)
½"
Primary circuit return (outlet):
C
Victaulic 3 (DN 80)
"
Secondary circuit return (inlet):
D
Victaulic 2 (DN 65)
½"
Extra low voltage (ELV) < 50 V
E
F Power supply 230 V/50 Hz
Power supply 400 V/50 Hz
G
Installation sequence
25