Converting To Operation With Lpg; Checking The Static Pressure 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 nozzle and switch to the correct
gas type at the control unit.

Checking the static pressure and supply pressure

Danger
CO formation as a result of
incorrect burner adjustment can
have serious health implications.
Always 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
separate filling point fitted at a con-
venient position in the heating cir-
cuit. The connection must be
removed when filling is complete.
Where local water authority regula-
tions do not allow temporary con-
nections, a sealed system 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 provided in BS 5449.
Separate installation instructions
For conversion from LPG to natural
gas, see page 67.
Operation with LPG
Purge the LPG tank twice on commis-
sioning or replacement. Vent the tank
and gas connection line thoroughly
after purging.
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