Boiler Connections
18
Connections
(continued)
Heating water connections
AV Air vent
BD Boiler Drain
BWR Boiler water return
BWS Boiler water supply
DR Boiler heating return for
domestic hot water production
DS Boiler heating supply for
domestic hot water production
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
3 bar/
. . . . .
45 psig
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test pressure
4 bar/
. . . . . . . . . . . . . . . . . . . . . . . . . . .
60 psig
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Damage resulting from pressure
exceeding those values stated is not
covered by Viessmann warranty.
5285
960
v1
.2
5285
960
v1
.2
SVL
PRV
AV
BWR
BWS
DS
GC
DR
BD
IMPORTANT
Summary of Contents for Vitodens 200 WB2 11-44
Page 51: ...51 5285 960 v1 2...
