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SIEMENS LDU11.523A17 gas valve proving control unit
SIEMENS LDU11.523A17 is an automatic gas valve proving control unit used in burner systems. It performs leak tests on gas shutoff valves either before burner startup and/or immediately after shutdown. It complies with EN 1643 and EN 161 standards and is designed for integration into OEM systems.
SpecificationValueModelLDU11.523A17Voltage100–110 V AC, 50/60 HzTest Type2-stage pressure proving principleCompatible Pressure SwitchesCommercial double-throw pressure switchesTest TimingAutomatically before burner startup and/or after shutdownHousingVALVEGYR series, panel mountableIndicatorsFront panel test progress and fault indicatorResetManual or remote electrical resetCertificationsCE, UL, FMComplianceEN 1643 (valve proving), EN 161 (automatic shutoff valves)