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This SPST switch is factory-calibrated to a -0
or resistance readings exceeding 1600 ohms while the flame is present
Rugged Durability: Heat-resistant materials prevent the blades from warping or corroding in the presence of acidic flue gas condensates
Manual resets are designed to force a technician to inspect the system before restart after a critical safety event
If the circuit is open and the furnace is cold
Weil McLain 510-218-100 Gauge Els PW 17895 This SPST switch is factory-calibratedThe Weil McLain 510 218 100 Gauge is a critical instrument for monitoring system conditions in low pressure steam heating applications. This combination pressure vacuum gauge features a large, easy to read 4 1 2 inch dial face, providing technicians with clear visibility for precise diagnostics on commercial and residential boiler systems. Engineered with a dual scale range of 0 30 PSIG for positive pressure and 0 30" Hg for vacuum measurement, this
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