Viessmann WB2B 45 - Heating Water Connections

Boiler Connections
19
Connections (continued)
Heating water connections
Legend
AV Air Vent (inside boiler)
BD Boiler Drain
BF Boiler Fill
BWS Boiler Water Supply
BWR Boiler Water Return
PRV Pressure Relief Valve
1. Thoroughly flush heating system
(particularly before connecting the
boiler to an existing system).
2. Connect boiler to the heating
system.
Max. operating
pressure 4 bar / 60 psig
. . . . . . . . . . . . . . . . . . . . . . . .
Test pressure 6 bar / 90 psig . . . . . . . . . . . . . .
Damage resulting from pressure
exceeding those values stated is not
covered by Viessmann warranty.
5418 909 v1.65418 909 v1.6
AV
PRV
BWR
BWS
BD
BF
Fig. 14
IMPORTANT