Daikin D-BACS, Design Manual, Page: 256 / 376

12.1 Introduction 239
Interface for use in LONWORKS
®
12. Control-related Design Keypoints
12.1 Introduction
This document provides a general introduction to the specifications for the Interface for LONWORKS
®
linking Daikin’s A/
C control line (DIII-NET) with the LONWORKS network. The LONWORKS network via the Interface for LONWORKS
®
enables the monitoring and control of Daikin’s VRV system.
12.2 System Configuration
12.2.1 A/C Units to be Monitored and Controlled
- VRV indoor units (H and K types)
- HRV (This refers to systems that are connectable to the DIII-NET. However, only On/Off operation can be monitored.)
-
Sky Air indoor units (Each indoor unit requires an adapter to connect to the SkyAir.
In cases of SkyAir, only main units are monitored and controlled.)
- RA (Adapters for the DIII-NET are necessary. However, only On/Off operation can be monitored.)
- General purpose adapter (DTA103A1: Only On/Off status can be monitored.)
- Centralized control adapter
12.2.2 Number of A/C Units to be Monitored and Controlled
A maximum of 64 groups of indoor units connected to a DIII-NET via one Interface for LONWORKS
®
are monitored and
controlled. The indoor unit addresses from ‘1-00’ to ‘4-15’correspond with the LON A/C numbers from 1 to 64 used in
communications within the LON.
The above illustration was developed to provide a general image. The actual number of items controlled differs with
respect to the number of indoor units connected. (The number increases/decreases according to the items being
controlled.)
<Example> Control items: 20 Number of units connected : 30
Control items: 10 Number of units connected : 60
(20 acknowledged service items per second on a 30-second interval data collection cycle)
Control items: 600 items
The number of units to be connected is determined according to the number of items that must be controlled.