Enertech Bentone BFG1, Installation And Maintenance Instruction

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16 Bentone BFG1
3.8 Control measures
3.8.1 Gas quality
Check that the combustion head is intended for the gas quality to be used
(refer to Technical data).
3.8.2 Bleeding
Bleeding of the gas pipe can be achieved by removing the screw on the test
nipple for the inlet pressure. Connect a plastic hose and lead out the gas into
nature. When the bleeding in completed,
don’t forget to install the screw in the test nipple again.
3.8.3 Function test
The electric function test can be done as follows:
When connecting to the mains, check that the phase and zero are not
switched. The gas tap should be closed. To prevent the gas pressure switch
from blocking, it should be bridged temporarily.
After the main switch has been turned on and the max. and control
thermostats have been set, the prepurging period lasts for 30-35 secs. After
this, the pre-ignition is started (0.5-2.5 secs. depending on the design of
the gas burner control). The ignition spark should then be able to operate
faultlessly at the required quantity of air for combustion. The gas valve is
energized and opens. After the end of the safety period (2-3 secs.), the gas
burner control blocks.
The solenoid valve and motor become de-energized. Remove the bridge
after completed testing.
Check that no safety functions are disconnected before placing the burner
into service.
3.8.4 Leakage testing
When leakage testing the gas fittings with test points between the valves, the
solenoid valve should be closed. A pressure gauge should be connected to
the test nipple Pa. The test pressure in the fittings should be 1.5 x max inlet
pressure or min. 150 mbar. If leakage is observed when measuring, localise
the leaking site with soapy water or leak detection spray. After sealing, leak
test the fittings again. After completed trimming, all joints, branching points
and outlets on the gas line should be tested for leaks.