3-Pipe FSV-EX MF3 Series

Redesigned components in the body provide improved performance, especially in the rated cooling condition and COP performance. First, two independently controlled compressors achieve high efficiency (for more than 14 HP). Then, twin rotary compressors offer both low vibration and high COP.

The new heat exchanger features a triple-surface construction. Compared to the divided dual-surface construction in current models, there is no division of space and the area for heat exchange is larger. Also, a highly efficient piping pattern increases heat exchange performance by 5%*. The condenser’s 3-row design improves the heat exchange efficiency by increasing the surface area.**

Note: For 8/10 HP units, the heat exchanger is 2-row design. *Based on Panasonic in-house report. **For 12/14/16 HP units.

If it takes time to recover the oil moved to the IDU side, the cooling capability will be reduced. Panasonic VRF systems minimize the time and frequency of oil recovery by managing oil recovery in three stages, equipping units with sensors to detect oil levels, and using accumulators. This reduces energy consumption and maintains comfort without sacrificing cooling capability.

The indoor and outdoor units work in tandem to control evaporation temperature, refrigerant volume, and airflow. This enables optimal air conditioning according to the number of people in the room and the indoor temperature, as well as energy savings and comfort.

Note: When fan speed is set to Auto.

Featuring inverter control technology, MF3 series systems are Demand Response Management (DRM) ready. With this control, power consumption at times of peak load can be set in three steps to deliver optimum performance. This helps to correspond with the local power management for reducing peak power consumption, and to reduce annual power consumption with minimal loss in comfort.

*Demand controller. Relay contact point: No voltage relay.
**Current input is DC 24V 10mA Use a very small electric current contact point for the relay.

It is possible to limit the operating current of MF3 series system to 3 stages (75%/50%/0%) according to the demand control signal sent from the building.

The total run-time of compressors is monitored by a built-in microcomputer, which ensures that the operation times of all compressors within the same refrigerant circuit are balanced.* Compressors with histories showing shorter run times are selected first, ensuring equal wear and tear across all units and extending the working life of the system.**

*Depend on the accumulated operation time of each compressor. **Compressor priority can be changed. (e.g.) Case1: A->C->B->D, Case2: C->A->D->B, Case3: A->C->D->B, Case4: C->A->B->D

Automatic backup operation works in the case of compressor failure or outdoor unit malfunction. Even if a whole outdoor unit fails, the other outdoor unit keeps running, and even if a compressor in a single system fails, the other compressor keeps running.

Note: Except for 8, 10 & 12 HP single unit installation. The backup operation allows uninterrupted cooling or heating to continue whilst waiting for service. Users should contact their authorised service centre as soon as a fault occurs.