Unit installation

6 IM 736-4
Description
The BACnet Communication Module incorporates a MicroTech II Chiller Unit Controller into a
BACnet Local Area Network (LAN). It supports the BACnet MS/TP (EIA 485) data link layer
(physical layer).
The BACnet Communication Module mounts in the MicroTech II Chiller Unit Controller panel. The
BACnet Communication Module is a rectangular metal enclosure with connectors and an indicator on
the front panel.
Application
The BACnet Communication Module connects the MicroTech II Chiller Unit Controller to the
Building Automation System (BAS) on a BACnet Local Area Network. It is the interface adapter for
the exchange of BACnet objects between the network and the unit controller. Figure 1 shows the
BACnet Communication Module and MicroTech II Chiller Unit Controller integrated into a BAS.
Figure 1. Building Automation System
MicroTech II
Ch i l l e r Un i t Co n t r o l l e r
BACnet
Communication
Module
Chiller (RS-232
)
Serial Card
Po rt
RS
-
48
5
BA
C
net
Et h er n et
RS-485
(Iso lat ed )
24
VAC
PW
R