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Flow chart: Valve Test, Variant with Two Pressure Monitors

Gas Burner: Flame Monitoring with Ignition Flame (Gas Valve 1 Opens Before Ignition Valves)

A ... B

Valve test successful

C … D

The pressure cannot be relieved within the relief time

D … E

Acknowledge the error

E … F

The pressure rises during the 1st monitoring time

F ... G

Acknowledge the error

G ... H

The pressure cannot be built up within the charge time

H ... I

Acknowledge the error

I ... J

The pressure drops during the 2nd monitoring time

Any state

Any signal state. Running time monitoring enabled

No control or signal must not be present

Control or signal present

t1 F [1 - 3]: VPS: Relief time
t2 F [1 - 3]: VPS: Fuel valve 1: Proof time
t3 F [1 - 3]: VPS: Load time
t4 F [1 - 3]: VPS: Fuel valve 2: Proof time

DOC-719480141