Venting the boiler
1.
Close the shut-off valves on the
heating water side.
2.
Connect the drain hose to the boiler
fill & drain valve
B
.
3.
Open valves
A
and
B
, and vent
at mains pressure, until no sound of
escaping air can be heard.
4.
Close valves
A
and
B
, and open
the primary shut-off valves.
Venting the heating system
1.
Close the gas shut-off valve and
start the control unit.
2.
Activate the venting program via
coding address 2F:1.
Note
To call up code 1 and for setting the
coding address, see page 38.
For function and sequence of the
venting program, see page 103.
3.
Check the system pressure.
Further details regarding the individual steps
(cont.)
8
Initial start-up, inspection, maintenance
56
92
550
GB
Summary of Contents for VITODENS 300 WB3A
Page 10: ...Opening the control unit housing 10 5862 570 GB...
Page 14: ...Closing control unit housing and inserting user interface 14 5862 570 GB...
Page 129: ...Parts lists cont 113 Parts lists 5692 550 GB...
Page 130: ...Parts lists cont 114 Parts lists 5692 550 GB...
Page 131: ...Parts lists cont 115 Parts lists 5692 550 GB...
Page 132: ...Parts lists cont 116 Parts lists 5692 550 GB...
Page 133: ...Parts lists cont 117 Parts lists 5692 550 GB...
Page 145: ...129 5692 550 GB...
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