Honeywell Q313A1055 Thermopile Generator

The Honeywell Q313A1055 Thermopile Generator is a critical millivolt component engineered for self-powered gas control systems in commercial and residential HVACR applications. This 750mV thermopile utilizes a series of internal thermocouples to generate sufficient DC voltage to operate automatic gas valves and Powerpile gas control systems without an external power source. It features a robust 47-inch lead length with a standard spade terminal connection, ensuring compatibility with a wide range of pilot burners, including the Q314, Q324, and Q327 series. With a precise 2.89 Ohms resistance and an open circuit output ranging from 600mV to 750mV, this unit provides the steady electrical signal required for reliable pilot flame sensing and safety shutoff. The package includes a 1/2-inch attaching nut for secure mechanical installation. As a veteran-grade replacement thermopile, this model is functionally identical to the Q313A1055/U universal service part, making it a versatile stock item for technicians servicing boilers, furnaces, and floor heaters.

• Self-Powered Reliability: Generates a consistent 750mV output to power millivolt gas valves independently of grid electricity.
• Maximum Lead Reach: The 47-inch shielded lead wire provides ample slack for large appliance housings and complex burner configurations.
• High-Temperature Durability: Rated for hot junction temperatures up to 1400?F and cold junction stability up to 780?F.
• Simplified Installation: Comes with a 1/2-inch thermopile attaching nut for immediate mounting to existing pilot burner brackets.
• Universal Versatility: Serves as a direct replacement for Honeywell Q313A1055/U and various OEM millivolt generators.

What is the difference between Q313A1055 and Q313A1055/U?
There is no functional difference. The "/U" suffix denotes "Universal" packaging commonly used in the Tradeline retail channel, but the technical specifications and performance are identical.

Can I use this on a 30mV thermocouple system?
No. This is a 750mV Powerpile generator designed for millivolt-specific gas valves. It will not operate correctly in systems designed for 30mV thermocouples.

How do I troubleshoot a low millivolt reading?
Check the resistance across the spade terminals; it should hover near 2.89 ohms. Ensure the pilot flame is fully engulfing the top 1/2 to 1 inch of the thermopile tip and check for carbon buildup.

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.