PFD refrigerant flow branch control.
-Easy installation, New PFD design means the connection of the indoor unit liquid pipe is made directly to the liquid line - bypassing the PFD. This means (x2) less pipe connections per indoor unit, reducing installation time and cost.
-Optional PFD box extension cable that has a connector at ends makes it possible to separate the indoor unit and PFD box further, enable the PFD box to be located away from the indoor unit help reducing the influence of sound caused by PFD box and refrigerant flow.
Mitsubishi Heavy Industries