62
Checking the pre-charge pressure and the DHW expansion ves-
sel (if installed)
A
1.
Check the static pressure of the DHW
line downstream of the pressure
reducer and adjust if required. Set
value: max. 3.0 bar (0.3 MPa).
2.
Close the on-site shut-off valve in the
cold water line.
3.
Turn operating lever of valve
A
to
the "front" position.
4.
Check the pre-charge pressure of the
DHW expansion vessel and adjust if
required. Set value: Static pressure
minus 0.2 bar (0.02 MPa).
5.
Turn operating lever of valve
A
back
to the "left" position and open the on-
site shut-off valve in the cold water
line.
Checking all gas equipment for tightness at operating pressure
Danger
Escaping gas leads to a risk of
explosion.
Check all gas equipment for tight-
ness.
Note
Only use suitable and approved leak
detection agents (EN 14291) and devi-
ces for the tightness test. Leak detection
agents with unsuitable constituents
(e.g. nitrites, sulphides) can cause mate-
rial damage.
Remove residues of the leak detection
agent after testing.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5773 216 GB
Summary of Contents for Vitodens 222-F B2TA series
Page 12: ...12 2 5 1 4 2x 3 Installing the boiler Removing the front panels 5773 216 GB...
Page 13: ...13 1 2 SW17 Installing the boiler Siting and levelling the boiler 5773 216 GB Installation...
Page 31: ...31 4 1 5 2 2x 3 Installing the boiler Fitting the front panels 5773 216 GB Installation...
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