Please note that the article applies also to commissioning the following HVAC brands:
Yanmar
HVAC Communication Terminals HVAC outdoor connection
* For Heat Recovery systems the connection is at outdoor units only. * Polarity is not required on the HVAC communication line. ** Centralized (group) address required.
Connecting to the line plug Secure the cables in the L1 line plug.
Plugging into the CoolMaster Insert the plug into the CoolMaster L1 socket.
Check DIP Switches are set correctly Dip switches setup for VRV HVAC system on L1.