Reznor 37752 Disc

The Reznor 37752 Disc is a specialized LP Gas Burner Air Restrictor engineered for precision fuel-to-air ratio management in liquid propane fired heating systems. As a critical component for Reznor gas conversion and maintenance, this disc ensures high-efficiency combustion by regulating the secondary air intake at the burner rack manifold. Designed specifically for compatibility with Reznor unit heaters including FT and SFT series models (specifically sizes 250 and 300), the 37752 disc is essential for maintaining the correct manifold pressure—typically 10" w.c. for propane applications. This OEM-spec component prevents incomplete combustion and carbon monoxide production by stabilizing the burner flame pattern.

For field technicians, the Reznor 37752 provides a direct fit for the burner assembly, mounting securely via four #10-32 screws. Utilizing this liquid propane burner disc is vital during natural gas to propane conversions to meet manufacturer engineering standards for thermal output and safety. Its high-durability construction is built to withstand the intense heat cycles of commercial and industrial HVAC environments, ensuring long-term system reliability without compromising the burner's structural integrity.

• Ensures optimal propane fuel regulation for clean, efficient combustion cycles.
• Direct OEM replacement part for Reznor FT250, FT300, SFT250, and SFT300 models.
• Critical for Reznor LP conversion kits to maintain safe manifold pressure levels.
• Helps prevent soot accumulation and heat exchanger stress by stabilizing the flame.
• Constructed from heavy-duty materials to resist thermal warping in the burner box.

Is the Reznor 37752 disc required for all propane heaters?
This specific disc is required for Reznor FT and SFT models 250 and 300 when operating on liquid propane to properly restrict air intake. Always verify your specific model's conversion instructions before installation.

What symptom indicates a failing or missing burner disc?
A missing or improperly seated LP gas disc often results in an unstable, lifting flame or "flame rollout" due to excessive air velocity, which can trigger safety limit switches.

How is the Reznor 37752 installed?
The disc installs directly onto the burner/manifold assembly. You must align the four mounting holes and secure it using the manufacturer-specified sheet metal screws to ensure a proper seal.

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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.