Bentone STG 146, Installation And Maintenance Instructions Manual

MEASURES AND CHECKS BEFORE START-UP

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Leakage control

General rules

Care should be taken by the installer 

to ensure that no electrical cables or 

fuel/gas pipes are trapped or damaged 

during installation or service/mainte

-

nance.

Inner assembly

Ensure that the  ignition and ionisation 

electrodes are correctly adjusted. The 

sketch shows the correct measure-

ments.

Gas quality

Ensure that the burner head is meant 

for the gas quality to be used (see 

fig.).

Venting

The gas line is vented by loosening the 

screw on the test nipple for the inlet 

pressure. Connect a plastic hose and 

conduct the gas into the open. After 

having vented the gas line tighten the 

screw again.

Leakage control

When making a leakage control of the 

gas supply system the solenoid valve 

should be closed. Connect a pressure 

gauge to the test nipple Pa, see fig. 

The test pressure in the system should 

be 1,5x max. inlet pressure or min. 

150 mbar. If any leakage, locate  the  

source  by means of soapy water or 

a leak location spray. After tightening 

repeat the test.

Electric function test:

Ensure that phase and neutral are 

not reversed. The gas shut-off cock 

should be closed.To prevent the gas 

pressure switch from locking out it 

should be linked temporarily.

After the main switch has been 

switched on and the thermostats have 

been adjusted the pre-purging period 

begins (30-50 sec.). At the end of this 

period the pre-ignition period starts 

(0,5-3 sec. dependent on the design 

of the gas control). The gas valve is 

energized and opens. At the end of the 

safety time (2-3 sec.) the gas control 

locks out. The solenoid valve and the 

motor will be "dead". Remove the link 

from the gas pressure switch after the 

test is finished.

Inner assembly

Town gas

Inner assembly

Natural,  LPG