InTroduCTIon
www.DaikinApplied.com 7 ED 15062-7 • MICROTECH II CHILLER CONTROLLER
This document contains the necessary information to
incorporate a MicroTech II Chiller Unit Controller from Daikin
Applied into your Building Automation System (BAS). It
includes all necessary BACnet properties, LONWORKS
variables, and corresponding MicroTech II Chiller Unit
Controller data points. It also contains the BACnet Protocol
Implementation and Conformance Statement. BACnet and
LONWORKS terms are not dened. Refer to the appropriate
specications and functional prole for denitions and details.
Chiller Models
The following table lists the model designators of Daikin
Applied Chiller units and the corresponding description.
Unit Model Number Description
WSC Water-Cooled Centrifugal, Single-Compressor
WDC Water-Cooled Centrifugal, Dual-Compressor
WPV Water-Cooled Centrifugal, Packaged Unit
HSC
Water-Cooled Single-Compressor Centrifugal, Heat
Recovery
HDC
Water-Cooled Dual-Compressor Centrifugal, Heat
Recovery
TSC
Water-Cooled Single-Compressor Centrifugal,
Templier
WMC Water-Cooled Centrifugal, Magnetic Bearing
WCC
Water-Cooled Centrifugal, Dual Compressor Series
Counterow
AGZ Air-Cooled Global Scroll
ACZ Air-Cooled Scroll, Condensing Unit
WGZ Water-Cooled Global Scroll
AGS Air-Cooled Global Screw
WGS Water-Cooled Global Screw
TGZ Templier Water Heater
Controller Data Points
The MicroTech II Chiller Unit Controller contains data points or
unit variables that are accessible from as many as four user
interfaces: the unit keypad/display, the Operator Interface
Touch Screen, a BACnet MS/TP network, or a LONWORKS
network. Not all points are accessible from each interface. This
manual lists all important data points and the corresponding
path for each network interface. Refer to the applicable
Operation Manual for keypad/display and Operator Interface
Touch Screen detail (see Reference Documents section for
literature part numbers.)
Protocol Denitions
The MicroTech II Chiller Unit Controller can be congured
in either an interoperable BACnet MS/TP or LONWORKS
network. The controller must have the corresponding network
Communication Module installed. There are two network
Communication Modules discussed in this document: BACnet
and LONWORKS. The BACnet Communication Module
accommodates the BACnet MS/TP protocol. The LONWORKS
module functions in accordance with the LONMARK Chiller
Controller functional prole.
BACnet Protocol
The BACnet protocol is a standard communication protocol for
Building Automation and Control Networks developed by the
American National Standards Institute and American Society
of Heating, Refrigerating and Air-conditioning Engineers
(ASHRAE) specied in ANSI/ASHRAE Standard 135-2004.
It addresses all aspects of the various systems that are
applied to building control systems. BACnet provides the
communication infrastructure necessary to integrate products
manufactured by different vendors and to integrate building
services that are now independent.
LONWORKS Network
A control network specication for information exchange
built upon the use of LonTaLk
®
for transmitting data. The
LonTaLk Protocol was developed and is owned by the
Echelon Corporation. It describes how information should be
transmitted between devices on a control network.