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Idiomas disponibles
Idiomas disponibles
Gas proving system :
Valve proving is dependent on input valve proving ON / OFF (X2-02). When a leak is detected, the gas valve proving function ensures
that the gas valves will not be opened and that ignition will not be switched on. Lockout will be initiated.
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Valve proving with separate pressure switch (P LT)
Step 1: td4 – Evacuation of test space
Gas valve on the burner side is opened to bring the test space to atmospheric pressure.
Step 2: td1 – Test atmospheric pressure
When the gas has closed, the gas pressure in the test space must not exceed a certain level.
Step 3: td3 Filling of test space
Gas valve on the mains side opens to fill the test space.
Step 4: td2 – Test gas pressure
When the gas valve has closed, the gas pressure in the test space must not drop below a certain level.
Keys
td1 Test atmospheric pressure
td2 Test gas pressure
td3 Filling of test space
td4 Evacuation of test space
V... Fuel valve
PLT Pressure switch valve proving
Input / output signal 1 (ON)
Input / output signal 0 (OFF)
Input permissible signal 1 (ON) or 0 (OFF)
No.
Parameter
242
Valve proving evacuation of test space
243
Valve proving time test atmospheric pressure
244
Valve proving filling of test space
245
Valve proving time test gas pressure
Controllo tenuta con pressostati separati
11
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