Mcquay Daikin 049751102 Valve

The McQuay Daikin 049751102 Valve is a critical 24V combination gas valve engineered for precision fuel regulation in commercial HVACR systems. Designed specifically for natural gas applications, this 3/4" gas valve features a factory-set 3.5" WC manifold pressure to ensure optimal burner performance and consistent heat output. As a high-performance Daikin replacement part, it provides a reliable interface for modern ignition systems, facilitating both safety and efficiency in high-demand environments. Built to handle a flow capacity of approximately 290 CFH, this HVAC gas control valve is a direct replacement for legacy part numbers such as 049751101 and 300037302. Its dual-stage capability allows for more nuanced temperature control, while the rugged construction ensures long-term direct OEM replacement reliability. When retrofitting certain older units, technicians should verify if field-supplied reducing bushings are required for the inlet side to match specific manifold configurations.

• Precise Fuel Regulation: Factory calibrated to 3.5" WC for natural gas, ensuring stable manifold pressure across various firing rates.
• Standardized Connectivity: Features 3/4" inlet and outlet NPT connections for a secure, leak-proof integration into the gas train.
• Universal Compatibility: Works seamlessly with 24V control circuits used in Daikin, McQuay, and integrated Rebel rooftop systems.
• Enhanced Safety: Built-in redundant safety shutoff mechanisms prevent gas flow in the event of flame failure or loss of power.
• Service Efficiency: Compact swing radius design allows for easier installation in tight burner compartments and equipment cabinets.

Can this valve be field-converted for Propane (LP) use?
While primarily configured for natural gas at 3.5" WC, this valve structure is often compatible with manufacturer-approved LP conversion kits. Always verify the specific regulator spring requirements before adjusting for liquid propane.

What are the wiring requirements for the 049751102?
The unit operates on 24V AC, 60Hz. Technicians should utilize standard NEMA terminals or the provided spade/screw connections, ensuring polarity matches the ignition control board specifications.

Is this a direct swap for the 049751101 model?
Yes, it replaces the 049751101; however, since the 049751101 used a 1/2" inlet and 3/4" outlet, you will need a 3/4" male to 1/2" female NPT reducing bushing for the inlet side when upgrading to the 049751102.

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.