Nordyne 903428 Conversion Kit

Optimizing your next installation requires high-performance components like the AC Pro MMUL-H-024BMB, a multi-position mini-split indoor unit designed for versatility in ducted air handler applications. This 24,000 BTU/h nominal capacity unit features a constant airflow fan capable of maintaining static pressure up to 0.8 in WC, ensuring consistent performance across upflow, downflow, or horizontal configurations. Engineered for the industry-wide shift toward low-GWP alternatives, this unit is fully compatible with R-454B (A2L) refrigerant, providing a future-proof solution for residential and light commercial projects. The 208-230 VAC system integrates seamlessly with standard 24 VAC controls or a factory wall controller with WIFI for enhanced system management. For contractors managing tight mechanical spaces, the powder-coated galvanized steel cabinet and flared refrigerant line connections streamline the HVAC installation process while maintaining rugged durability in the field.

• Multi-Position Flexibility: Ready for immediate deployment in upflow, downflow, or horizontal left/right orientations without complex modifications.
• A2L Refrigerant Ready: Designed to meet the latest environmental mandates with native support for R-454B refrigerant circuits.
• Variable Blower Control: The constant airflow fan adjusts automatically to static pressure changes, optimizing SEER and AFUE ratings during matched system operation.
• Enhanced Heating Support: Accommodates optional field-installed electric strip heaters up to 20 kW for supplemental heating capacity.
• Smart Control Integration: Built-in WIFI support and compatibility with standard 24V controls allow for high-precision 4H/2C staging and superheat monitoring.

• Is a factory controller required for this air handler? While it is compatible with standard 24 VAC thermostats, a factory wall controller is recommended for full variable-speed capability and technical diagnostic access.
• Can this unit be used in a multi-zone system? Yes, the AC Pro MMUL series identifies as a versatile indoor head that can be matched with various outdoor multi-zone condensers.
• What tools are needed for the flare connections? Standard A2L-rated torque wrenches and flaring tools are required to ensure leak-free performance with the newer mildly flammable refrigerants.

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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.