Boiler Connections
19
Connections
(continued)
Heating water connections
Legend
AV
Air Vent (inside boiler)
BD
Boiler Drain
BF
Boiler Fill
PRV Pressure Relief Valve
BWS Boiler Water Supply
BWR Boiler Water Return
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.
5
3
6
9
2
9
7
v
1
.6
5
3
6
9
2
9
7
v
1
.6
AV
PRV
BD
BF
Fig. 14
BWR
BWS
IMPORTANT
Содержание Vitodens 200-W 19 WB2B Series
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