Engineering specifications, microcomputer Simplicity® diagnostics, refrigerant charging parameters, and certified OEM replacement parts catalogs for commercial packaged rooftop equipment.
Complete engineering reference for York Millennium Z22, Z23, and Z24 (25, 30, and 40 Ton) commercial packaged systems. Includes full 1–14 Simplicity LED fault code directory, subcooling tables, electrical specifications, and certified OEM replacement parts.
Open Field Service Manual & Diagnostics →