Unit installation

10 IM 736-4
c. Keeping the RS 232 Serial Interface Card level, move it in the slot until you feel the
connectors line up. The correct position seems to be level, toward the left side of the slot,
and down slightly from the top.
d. When you feel the connectors align, press the RS 232 Serial Interface Card into the
connector. Verify that it is firmly seated in the connector.
8. Replace the cover on the Serial Card slot. Slip the cover over the network connector plug.
9. Remove the BACnet Communication Module from the control panel door.
10. Mount the BACnet Communication Module on the studs with the hardware included in the kit.
(see Figure 3.)
11. Connect the BACnet Communication Module to the MicroTech II Chiller Unit Controller.
a. Plug the Serial Cable in both the RS 232 Serial Interface Card and the BACnet
Communication Module.
b. Route the cable across the hinge and over to the BACnet Communication Module.
12. Connect power to the BACnet Communication Module.
a. Plug the power wires into the BACnet Communication Module PWR connector and route
the wires per instructions in paragraph 13 on page 9.
13. Connect the BACnet Communication Module to the network (see Figure 2.)
a. Route the network cable through a knockout and to the appropriate connector on the BACnet
Communication Module.
14. Restore power to the MicroTech II Chiller Unit Controller.
Figure 3. BACnet Communication Module Mounted in a Centrifugal Chiller Control Panel
Network Cable
BCM Serial Cable
Power Cables
Serial Card Connector