Outdoor Unit Multi-Zone Ductless Heat Pump Standard R-454B 42,000 BTU 5-Port 208/230 V 1-Phase 60 Hz MIT-MXZ5D42NL

The Outdoor Unit Multi-Zone Ductless Heat Pump Standard R-454B 42,000 BTU 5-Port 208/230 V 1-Phase 60 Hz (MIT-MXZ5D42NL) is a high-capacity inverter outdoor condenser from Mitsubishi Electric designed to support up to five indoor zones with balanced cooling and standard heating performance. Using R-454B refrigerant and variable-speed inverter modulation, the unit dynamically allocates capacity across connected indoor units to maintain efficient part-load operation and stable zone control. Electrical requirements are 208/230 V single-phase at 60 Hz. For proper job fit, technicians must verify approved indoor unit combinations and total connected capacity remain within Mitsubishi-published limits, confirm refrigerant line sizes, maximum run lengths, and elevation differences, and ensure the electrical service meets the unit’s MCA and MOCP requirements. Correct application helps prevent capacity overload, communication faults, and unnecessary callbacks in larger multi-zone layouts.