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you must use a Q179 adapter to provide the necessary impedance matching
Integrated Supercapacitor: Provides a mechanical-spring-equivalent fail-safe without the bulk or wear
Key Benefits: Optimized Contaminant Filtration: The high-capacity molded porous core removes solid debris down to microscopic levels to protect sensitive expansion valves
Versatile Voltage Compatibility: Supports dual 50Hz/60Hz operations
this harness is specific to certain model series
Siemens Combustion LDU11.523A17 Valve 340155-7024 you must use a Q179The Siemens LDU11. 523A17 Valve Proving System is a critical safety controller engineered for automatic gas valve leak testing in double block valve configurations. Operating on a 110 volt AC supply, this unit utilizes a rigorous two stage pressure proving principle to verify the integrity of shut off valves before burner startup or following a controlled shutdown. During Test1, the device evacuates the test space and monitors for atmospheric pressure
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