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Honeywell Q340A1090 36" Thermocouple – 36"
SKU Q340A1090
Price
$16.24

The Honeywell Q340A1090 36″ Thermocouple is a universal flame-sensing device designed for standing pilot gas-fired heating systems. Built to generate a reliable 30 mV signal, it confirms pilot flame presence to the gas safety control and helps maintain safe burner operation. With its extended 36″ lead and included adaptor/clip hardware, this thermocouple simplifies installation on pilot assemblies in boilers, furnaces, and water heaters—giving contractors straightforward serviceability and dependable performance.

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Key Features

  • Universal replacement thermocouple for standing pilot gas burners – suitable for many HVAC applications. 

  • 36″ lead length provides reach for tight or deep pilot assemblies. 

  • Generates dependable 30 mV output (open circuit typically 26–32 mV) to satisfy Pilotstat and similar millivolt controls. 

  • Maximum Copel construction enhances durability and long service life. 

  • Includes adapter and push-in clip for easier mounting to pilot burner assemblies.

Technical Specifications

  • SKU / Model: Q340A1090 (Honeywell/Resideo) 

  • Lead Length: 36 inches 

  • Voltage Rating: ~30 mV generated at flame temperature 

  • Open Circuit Output: ~26 mV to 32 mV 

  • Resistance: ~0.02 ohm 

  • Connection Type: 11/32″-32 male nut 

  • Temperature Ratings: Hot Junction ~1400 °F; Cold Junction ~780 °F 

  • Includes: Adapter assembly and push-in clip for pilot mounting

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