McQuay IM 743 User Manual

OM 780-2 Page 9
Introduction
This manual provides information about the MicroTech II Chiller System Manager (CSM) for McQuay MicroTech II
chillers. It specifically describes the CSM’s features, sequences of operation, and configurable options. It also includes
information on how to use the user interface to monitor a running system and configure the CSM.
For information on CSM components, field wiring options and requirements, network wiring, and service procedures, refer
to IM 781, MicroTech II Chiller System Manager Installation Manual. For specific information about the MicroTech II
chiller unit controllers, refer to the appropriate MicroTech II unit controller installation or operation manual (see the
Reference Documents section of this document).
The CSM is capable of communicating with a connected building automation system (BAS) using BACnet® (IP or
Ethernet protocol as standard) or Modbus® (RTU or ASCII available as an option.) For additional information, see the
BACnet or Modbus Protocol Information documents, ED 15075 and ED 15077 respectively.
Figure 2. System Architecture
!
WARNING
Electric shock hazard.
Can cause personal injury or equipment damage.
This equipment must be properly grounded to the MicroTech II control panel. Trained personnel with experience
must perform connections and service with the equipment being controlled.

McQuay IM 743 Specifications

General

Brand	McQuay
Model	IM 743
Category	Controller
Language	English