Midea Vrf | V4 Plus Service Manual !!link!!

Supports complex piping configurations, crucial for large building installations.

The service manual details the robust engineering of the V4 Plus platform. The system supports a total piping length of up to 500 meters with a maximum actual single pipe length of 150 meters and a level difference of up to 70 meters (outdoor unit down). High-reliability features such as cycle duty operation allow any outdoor unit to run as the master to equalize service life, and the back-up function ensures that if one unit fails, the remaining units keep working. midea vrf v4 plus service manual

: Supports extensive vertical and horizontal piping layouts for high-rise buildings. High-reliability features such as cycle duty operation allow

Accommodates a vertical height difference of up to 110 meters between the outdoor and indoor units when the outdoor unit is positioned above. excessive refrigerant charge

Non-polar 2-core shielded PQ cable for indoor-to-outdoor communication; XYE cable for centralized control. Piping Limitations & Requirements

), excessive refrigerant charge, fouled condenser fins, or outdoor fan failure.

The (vertical separation) between indoor and outdoor units is another key parameter. The manual provides clear limits and guidance, noting that an oil return bend should be set every 10 meters in the gas pipe of the main pipe if the outdoor unit is more than 20 meters above the indoor units.