Converting To Operation With Lpg; Checking The Static And Supply Pressure - Viessmann Vitodens 050-W Installation And Service Instructions Manual

Further details regarding the individual steps

Converting to operation with LPG

In the delivered condition, the boiler is
set up for operation with natural gas. For
operation with LPG, change the gas noz-
zle and switch to the correct gas type in
the control unit.

Checking the static and supply pressure

Danger
CO formation as a result of incor-
rect burner adjustment can have
serious health implications.
Carry out a CO test before and
after work on gas appliances.
Commissioning, inspection, maintenance
(cont.)
5. Fill and vent the heating system using
the on-site valve. System pressure
0.8 to 1.2 bar (0.08 to 0.1 MPa).
The system can be filled using a sep-
arate filling point fitted at a convenient
position on the heating circuit. The
connection must be removed when
filling is complete. Where local Water
Authority regulation does not allow
temporary connection, a sealed sys-
tem filler pump with break tank must
be used. The heating system will not
be filled automatically from the
domestic hot water side. Alternative
methods for filling sealed systems are
given in BS 5449.
Separate installation instructions
Conversion from LPG to natural gas, see
page 60.
Operation with LPG
Purge the LPG tank twice during com-
missioning or replacement. Vent the tank
and gas connection line thoroughly after
purging.
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