Part 1. Overview
8 Design Guide DCM014A51
2. VRV System Overview
The Daikin VRV system consists of outdoor units, indoor units, zone controllers, centralized controllers,
and BMS interfaces. The customizable Daikin control system is built around the VRV system, and does
not require advanced field engineering (i.e., programming) for the control of the VRV system, except for
field settings configurations. The iTM BACnet Server Gateway can be used for monitoring, scheduling,
control, and interlock operation. A BMS can be used in conjunction with the Daikin controllers to share
operation workload to reduce project costs.
2.1 Types of Daikin VRV Systems
The VRV system can consist of either a Heat Recovery system, Heat Pump systems, or system that has
a combination of both.
1. Heat Recovery systems can provide simultaneous cooling and heating to each indoor unit
served by the same outdoor unit with use of Branch Selector Boxes (BS Box).
Figure 3. Heat Recovery System
2. Heat Pump systems only allow each outdoor unit and its connected indoor units to operate in
either cooling or heating mode. Multiple Heat Pumps systems can be installed to operate
independently in either cooling or heating mode.
Figure 4. Heat Pump System
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