Siemens (Pyro) ZN-34UA-RC
Siemens (Pyro) ZN-34UA-RC
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The Siemens ZN-34UA is a two-circuit sprinkler valve supervision module that monitors gate valves and related sprinkler system equipment for tamper conditions in accordance with NFPA 72. It's the latching version of the module: once a supervisory or trouble condition is detected, the yellow LED indication for that circuit stays lit until the system is manually reset, rather than clearing automatically when the condition goes away.
Key Features
- Two independent supervisory circuits per module
- Separate yellow LEDs per circuit for supervisory condition and circuit trouble
- Latching operation - condition clears only on system reset (unlike the non-latching ZN-34US)
- End-of-line resistor wired in parallel with normally open switches for circuit supervision
Technical Specifications
- Wire Size: 18 AWG minimum to 12 AWG maximum
- Ground Fault Threshold: ≤ 40K ohms, positive and negative
- Terminals 1-12 are power-limited
Certifications
- ULC S527 compliant latching operation
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