Start Without Prepurging (As Per En 676) - Siemens LMV36.520A1 Basic Documentation

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Infrastructure & Citiies Sector
7.5.5.5.

Start without prepurging (as per EN 676)

When using valve proving and 2 fuel valves of class A, prepurging is not required
(conforming to EN 676).
Prepurging can be deactivated via parameter.
No. Parameter
Gas: Prepurging
222 0 = inactive
1 = active
Fuel 1 gas: Prepurging
322 0 = inactive
1 = active
When prepurging is activated, it is performed in accordance with the adjusted prepurge
time.
If not activated, it is nevertheless performed of the following conditions apply:

Alterable lockout position

After an off time of >24 hours

In the event of a power failure (power-on)

In the event of shutdown due to an interruption of gas supply (safety shutdown)
No. Parameter
225 Gas: Prepurge time
325 Fuel 1 gas: Prepurge time
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CC1P7544en
25.09.2013