Reznor 177396 Valve

The Reznor 177396 is a Honeywell VR8204Q2418 intermittent pilot combination gas control, specifically engineered for 2-stage heating applications. This 1/2 inch NPT valve regulates natural gas flow in Reznor unit heaters and makeup air units, providing precise manifold pressure control across two stages of operation. Operating on a 24V HVAC control circuit, this assembly integrates a manual valve, two automatic operators, and a pressure regulator into a compact, straight-through body pattern. It serves as a direct OEM replacement for legacy part numbers including Reznor 51357, 60609, and 87430, as well as the White-Rodgers 36D13-208. The 2-stage design ensures smoother modulation, reducing short-cycling and improving thermal comfort in commercial environments. Built for reliability in demanding conditions, the unit is rated for ambient temperatures from -40°F to 175°F and features standard 1/4" male quick-connect terminals for seamless electrical integration during field installation or repair.

• Dual-Stage Modulation: Regulates gas flow between low and high fire to maximize combustion efficiency and maintain consistent discharge air temperatures.
• OEM Compatibility: Engineered as a drop-in replacement for Reznor HVAC gas valves, ensuring proper alignment with existing burner manifolds and pilot lines.
• Reliable Ignition: Designed for use with intermittent pilot systems, featuring a 1/4" compression fitting for secure pilot gas connection.
• Field-Adjustable: Includes top-accessible pressure taps and adjustment screws for precise manifold pressure setting at 0.9" and 3.5" WC.
• Durable Construction: Features a fine-mesh inlet screen to protect the internal valve seat from debris and pipe scale.

Is the Reznor 177396 compatible with LP gas conversion?
Standard models are set for natural gas. For Liquid Propane (LP) applications, a specific Honeywell conversion kit (typically including a red regulator spring) must be installed to handle the higher pressure requirements of propane systems.

What are the symptoms of a failing VR8204Q2418 valve?
Standard failure modes include the main burner failing to ignite despite a spark or hot surface igniter being active, or the valve failing to transition from low to high stage. Always verify 24V signal at the solenoids before replacing the hardware.

Can this valve be mounted in any orientation?
This gas control can be mounted from 0 to 90 degrees in any direction from the upright position of the gas control knob, including vertical installations.

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.