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Bentone
3.13 Electric function test
When connecting from the mains, make sure that phase and neutral
are not reversed. The gas tap must be closed. Temporarily link the gas
pressure switch so that it does not block.
The prepurging time (30-35 sec.) begins after switching on the main
switch and setting the maximum and control thermostats. After this
time, the preignition comes into operation (0.5-2.5 sec. depending on
the design of the gas burner control).
The ignition spark must be able to operate flawlessly at the amount
of air required for combustion. The gas valve is energized and opens.
After the end of the safety period (2-3 sec.), the gas burner control
goes into blockage. Solenoid valve and motor become de-energized.
Remove the link after testing.
3.11 De-aerating
De-aerating the gas line by closing the tap for the gas connection and
unscrewing the screw on the measuring nipple for the connection
pressure. Connect a plastic hose, open the tap and discharge the gas
to a safe place. When de-aerating is complete, do not forget to screw
the screw back into the measuring nipple.
3.12 Leakage control
When testing for leaks, the solenoid valve must be closed. Connect a
pressure gauge to the test nipple ”Pa”, see figure. The test pressure
in the system must not be higher than max. connection pressure, see
type plate. If leaks are found during measurement, locate the leaky
spot using soapy water or leak detection spray. After sealing, the
system is tested for leaks again.
!
Check the gas tightness.
Pa
Summary of Contents for STG 146i/2
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