Contents
Part 1. Overview .......................................................................................................................................... 6
1. DCM014A51 iTM BACnet® Server Gateway ......................................................................................... 6
1.1 Features: ....................................................................................................................................... 6
1.2 BACnet Compatibility .................................................................................................................... 7
1.3 System Outline .............................................................................................................................. 7
2. VRV System Overview ........................................................................................................................... 8
2.1 Types of Daikin VRV Systems ........................................................................................................ 8
2.2 DIII-Net System and Group Addresses ......................................................................................... 9
2.3 Remote Controller Group and Group Address ............................................................................. 9
2.4 Commanding Mode Change for Heat Recovery and Heat Pump Systems ................................. 11
2.5 Changeover Master and Secondary (Non-Master) Indoor Units................................................ 12
2.6 Indoor Unit Logic ........................................................................................................................ 12
3. iTM Overview ...................................................................................................................................... 14
3.1 Indoor Unit Management Point ................................................................................................. 14
3.2 Automatic Control ...................................................................................................................... 16
Part 2. Functional Specifications ............................................................................................................... 21
1. Introduction ........................................................................................................................................ 21
2. Network Topology .............................................................................................................................. 21
2.1 Visualization of Each Device on the BACnet Network ................................................................ 21
2.2 BACnet Network Number ........................................................................................................... 22
2.3 Device ID (Device Instance Number) .......................................................................................... 22
2.4 What is a MAC Address? ............................................................................................................. 22
2.5 MAC Address of a Virtual BACnet Device ................................................................................... 22
3. iTM and BACnet® Server Gateway Logic ............................................................................................ 23
3.1 BACnet Virtual Router Function .................................................................................................. 23
3.2 iTM BACnet Server Gateway Point Logic in the iTM ................................................................... 23
4. VRV System Monitor/Control Objects ................................................................................................ 24
4.1 Member Objects ......................................................................................................................... 24
4.2 Indoor Unit Device ...................................................................................................................... 24
4.3 System Control Device ................................................................................................................ 27
4.4 Restrictions ................................................................................................................................. 27
4.5. Outdoor Unit Device .................................................................................................................... 30
5. Properties ........................................................................................................................................... 24