Siemens Combustion LDU11.523A17 Valve
The 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 stability to check the upstream valve; during Test2, it pressurizes the space to verify the downstream valve. If any inadmissible leakage is detected by the required pressure switches, the LDU11.523A17 immediately initiates a lockout, preventing hazardous burner ignition. Designed for seamless integration into industrial gas trains, this compact plug-in unit features a built-in program indicator for rapid fault diagnostics, making it an essential component for high-output combustion plants requiring compliance with EN 1643 standards.
Key Benefits- Dual-Stage Leak Detection: Sequentially tests both upstream and downstream safety shut-off valves for comprehensive gas train safety.
- Precise Fault Diagnostics: Features a visual program indicator and lockout reset button to quickly identify whether a leak occurred during the evacuation or pressurization phase.
- Versatile Compatibility: Designed to work with Siemens QP pressure switches and LFL burner controls for standard industrial configurations.
- Flexible Timing: Supports valve proving prior to burner startup, during prepurge, or immediately after a shutdown to fit specific application requirements.
- Hardened Design: Housed in impact-proof, heat-resistant plastic to withstand demanding mechanical and climatic conditions in a boiler room or control cabinet.
What is the difference between the LDU11.523A17 and standard gas valve proving units?
This specific model is calibrated for 100-110V AC operation and features 5-second filling and evacuation times (t3 and t4), which are critical for matching the pressure dynamics of specific industrial valve sizes.
Which pressure switches should be used with this system?
The unit requires one or two single-pole, double-throw (SPDT) automatic reset pressure switches. For modular systems, the Siemens QP series is the standard recommendation to ensure signal accuracy.
Can this unit be reset from a remote location?
Yes, the LDU11.523A17 supports remote lockout reset via terminal 18, allowing technicians to clear faults from a centralized control panel without accessing the unit directly.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Siemens Combustion LDU11.523A17 Valve
The 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 stability to check the upstream valve; during Test2, it pressurizes the space to verify the downstream valve. If any inadmissible leakage is detected by the required pressure switches, the LDU11.523A17 immediately initiates a lockout, preventing hazardous burner ignition. Designed for seamless integration into industrial gas trains, this compact plug-in unit features a built-in program indicator for rapid fault diagnostics, making it an essential component for high-output combustion plants requiring compliance with EN 1643 standards.
Key Benefits- Dual-Stage Leak Detection: Sequentially tests both upstream and downstream safety shut-off valves for comprehensive gas train safety.
- Precise Fault Diagnostics: Features a visual program indicator and lockout reset button to quickly identify whether a leak occurred during the evacuation or pressurization phase.
- Versatile Compatibility: Designed to work with Siemens QP pressure switches and LFL burner controls for standard industrial configurations.
- Flexible Timing: Supports valve proving prior to burner startup, during prepurge, or immediately after a shutdown to fit specific application requirements.
- Hardened Design: Housed in impact-proof, heat-resistant plastic to withstand demanding mechanical and climatic conditions in a boiler room or control cabinet.
What is the difference between the LDU11.523A17 and standard gas valve proving units?
This specific model is calibrated for 100-110V AC operation and features 5-second filling and evacuation times (t3 and t4), which are critical for matching the pressure dynamics of specific industrial valve sizes.
Which pressure switches should be used with this system?
The unit requires one or two single-pole, double-throw (SPDT) automatic reset pressure switches. For modular systems, the Siemens QP series is the standard recommendation to ensure signal accuracy.
Can this unit be reset from a remote location?
Yes, the LDU11.523A17 supports remote lockout reset via terminal 18, allowing technicians to clear faults from a centralized control panel without accessing the unit directly.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The 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 stability to check the upstream valve; during Test2, it pressurizes the space to verify the downstream valve. If any inadmissible leakage is detected by the required pressure switches, the LDU11.523A17 immediately initiates a lockout, preventing hazardous burner ignition. Designed for seamless integration into industrial gas trains, this compact plug-in unit features a built-in program indicator for rapid fault diagnostics, making it an essential component for high-output combustion plants requiring compliance with EN 1643 standards.
Key Benefits- Dual-Stage Leak Detection: Sequentially tests both upstream and downstream safety shut-off valves for comprehensive gas train safety.
- Precise Fault Diagnostics: Features a visual program indicator and lockout reset button to quickly identify whether a leak occurred during the evacuation or pressurization phase.
- Versatile Compatibility: Designed to work with Siemens QP pressure switches and LFL burner controls for standard industrial configurations.
- Flexible Timing: Supports valve proving prior to burner startup, during prepurge, or immediately after a shutdown to fit specific application requirements.
- Hardened Design: Housed in impact-proof, heat-resistant plastic to withstand demanding mechanical and climatic conditions in a boiler room or control cabinet.
What is the difference between the LDU11.523A17 and standard gas valve proving units?
This specific model is calibrated for 100-110V AC operation and features 5-second filling and evacuation times (t3 and t4), which are critical for matching the pressure dynamics of specific industrial valve sizes.
Which pressure switches should be used with this system?
The unit requires one or two single-pole, double-throw (SPDT) automatic reset pressure switches. For modular systems, the Siemens QP series is the standard recommendation to ensure signal accuracy.
Can this unit be reset from a remote location?
Yes, the LDU11.523A17 supports remote lockout reset via terminal 18, allowing technicians to clear faults from a centralized control panel without accessing the unit directly.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
