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27. Valve proving
(leakage test)
Menu level 1
Menu level 2
Params & Display
BurnerControl
Example of fuel train
Legend
8.1.4 Extra functions of the LMV5...
Menu level 3
ValveProving
The gas volume contained in the piping between the valves (including the valve vol-
ume) must be calculated in accordance with the gas train.
G
Program
SV
Determination of the test time with predefined leakage rate to be detected during
valve proving:
(P G - P w )
t Test =
P atm
Determination of the detected leakage rate during valve proving:
(P G - P w )
Q Leck =
P atm
Q Leck
in l / h
Leakage rate in liters per hour
P G
in mbar
Overpressure between the valves at the beginning of the test phase
P W
in mbar
Overpressure set on the pressure switch (normally 50 % of the
gas inlet pressure)
P atm
in mbar
Absolute air pressure (1,013 mbar normal pressure)
V
in l
Volume between the valves (test volume)
including valve volume and pilot path (Gp1) if present
t Test
in s
Test time
Menu level 4
Menu level 5
ValveProvingType
Config_PM-VP/CPI
VP_EvacTme
VP_TmeAtmPress
VP_FillTme
VP_Tme_GasPress
Direct ignition
V1
V2
PS
PS
min
VP
•
V
•
3600
Q Leck
•
V
3600
•
•
t Test
•
45
Menu level 6
PS
ACT
max
7550s01E/0202
5921
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