Reznor 90204 Spring Kit

The Reznor 90204 Spring Kit is an essential OEM replacement component designed for Natural Gas unit heater applications. This Honeywell 391936 cross-referenced regulator spring is engineered specifically for technicians performing maintenance or conversions on compatible gas valves within the Reznor product line. As a veteran contractor knows, maintaining precise manifold pressure is critical for combustion efficiency and appliance safety. This Natural Gas spring kit allows for the fine-tuning of the regulator to ensure your heating equipment operates according to factory specifications.

Installation of the Reznor 90204 should be handled by a qualified technician. When replacing a regulator spring, it is mandatory to verify that the spring manufacturer matches the gas valve manufacturer—in this case, Honeywell—as these components are not interchangeable across different valve brands. After the gas valve spring replacement, always use a manometer to adjust the manifold pressure while the heater is in operation to confirm optimal performance at the burner. Using genuine Reznor replacement parts ensures seamless compatibility with your existing HVACR systems and helps maintain the integrity of the safety shutoff system.

• OEM Compatibility: Precision-engineered for exact fitment in specified Reznor Natural Gas units.
• Honeywell Integration: Direct functional replacement for Honeywell #391936 regulator springs.
• Combustion Accuracy: Facilitates exact manifold pressure adjustments for peak heater efficiency.
• Field Reliability: High-grade materials designed to withstand the thermal demands of industrial unit heaters.

• Can I use this kit for a Propane (LP) conversion? No, the Reznor 90204 is specifically calibrated for Natural Gas. Propane conversions require a different spring rate and orifice set.
• Does this spring work with White Rodgers valves? No. This spring kit is designed for Honeywell valves. Mixing manufacturers on gas regulator components is a safety hazard and will prevent proper pressure regulation.
• Should the spring be adjusted before or after installation? The spring is installed first, but terminal adjustment of the manifold pressure must be performed while the heater is firing using a calibrated manometer.

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.