Lamtec BurnerTronic BT300 - Valve Leakage Test Venting Over the Roof; Roof Purge Wiring

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6 Leakage Test for Main Gas Valves
6.3 Valve Leakage Test Venting Over the Roof
NOTICE
Consider diameter of gas line in the roof purge. For purge, plug X02 is activated for 3 s.
Make sure that this period is sufficient even for smallest purge line diameter!
Fig. 6-3 Wiring proposition for purge of gas line via roof in combination with BurnerTronic