5.4
Venting the gas pipe
§
Comply with the necessary regulations when
venting the gas pipe.
• Open the gas cut-off valve.
• Vent the gas pipe up to the gas valve.
5.5
Switch on
• Switch on blocking switch to release the burner.
WARNING
The heat generator is live when it has been
connected to the mains.
5.6
Gas inlet pressure
The gas quantity and thus commissioning of
the heating are only allowed to be performed
if the values for the flow pressure have been
achieved (see point 5.8 Setting the gas quan-
tity).
The flow pressure in the connection line must
achieve the values specified in chapter 3.2.
5.7
Functional check of combustion cylinder
pressure monitoring
!
WARNING
Lack of combustion air and flue gas accumu
-
lation can result in serious injury and proper-
ty damage.
• Before commissioning, check the pressure
switch settings:
- Measure and compare the measured
values with those in the table with the
factory settings.
- Correct settings if necessary.
• Ensure that combustion air is supplied and
flue gas is discharged.
In order to ensure safety, the Hoval UltraGas
®
is equipped
with a pressure monitoring device on the combustion cyl-
inder. The combustion cylinder pressure monitoring de-
vice records the pressure in the combustion cylinder dur-
ing the boiler pre-aeration time. If the pressure is outside
the set tolerance range, the Hoval UltraGas
®
will not com-
plete the starting phase and will trigger a shut down. This
prevents the boiler from operating in a dangerous state.
The permitted pressure tolerance range is set at the fac-
tory. Since the pressure in the combustion cylinder de-
pends on various parameters (e.g. the chimney height or
the height of the boiler location), it may be necessary to
adjust the tolerance range settings.
Criteria for pressure switch B17 and B18 settings
• The boiler only starts if there is no danger caused by
lack of combustion air or flue gas accumulation. This
means:
- Pressure switch B17 (min. pressure) is set so that the
gas burner is prevented from starting if too little com-
bustion air is supplied.
- Pressure switch B18 (max. pressure) is set so that
the gas burner is also prevented from starting if flue
gas is not discharged in sufficient volumes.
•
Gas burner operation is not impaired by normal fluc
-
tuations in the blower pressure (caused by weather or
the like).
36
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COMMISSIONING
Summary of Contents for UltraGas 1000
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