Fujitsu General America’s two larger refrigerant branch units simply installations and expand the heat recovery capability of its VR-II series Airstage VRF systems, the company explains. The new RBUs, which manage simultaneous heating and cooling in heat-recovery systems, can serve between eight and 12 zones. Previously, only four zones could be served by a single RBU. This advancement permits engineers, architects and installers to use fewer RBUs, and also expands the flexibility of heat-recovery systems, providing the opportunity to share thermal energy across more zones. WWW.FUJITSUGENERAL.COM