92
Rev 2.1
5) If the flame signal is higher than 0.5 Vdc and the flame LED does come on, contact your local Ajax Boiler Inc.
representative for more help.
Figure 6.4. Voltmeter Connected to Control Panel
6-4.4 Gas Valve Leak Test
This test is to check the closure tightness of the gas shutoff valve. It should only be performed by trained, experienced,
flame safeguard technicians during the initial start up of the burner system of whenever the valve is to be replaced. This
test should also be included in the scheduled maintenance and inspection procedures. For the test below, refer to figures
6.6 and 6.7 below.
Petcock
Gas ball-valve
Site-glass
White ceramic s
ark rod
Figure 6.2. Atlas Combustion Assembly Without
Burner
Fi
ure 6.3. Pilot Assembl
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General