Unit installation

IM 736-4 11
Figure 4. Serial Card Slot in Unit Controller
®
Air Conditioning
S
erial
C
ard
S
lot
Figure 5. Serial Card Slot Detail
J4
J5
VG VG0 Y1 Y2 Y3 Y4 ID1 ID2 ID3 ID4 ID5 ID6 ID7
ID15H ID15 IDC15
J19
8-Pin Connector
for Serial Card
Unit Setup for BACnet Network Control
Setup for MicroTech II Centrifugal Chiller Network Control:
1. Disable the chiller. The chiller should not be operating while performing this setup.
2. At the chiller touchscreen interface panel:
a. In the SETPOINTS MODE screen, set the #9 setpoint, BAS Protocol to BACnet. Use the
Operator Password of “2001.”
b. In the SETPOINTS MODE screen, set the #3 setpoint, Control Source to Local.
3. Verify with the chiller/control company technician that the chiller is operational on BAS.
4. In the SETPOINTS MODE screen, set the #3 setpoint, Control Source to BAS.
Setup for all Other MicroTech II Chillers Network Control:
1. Set the Set Unit Setpoint screen 1 initially to Source = Keypad.
2. Change the Protocol to BACnet in the applicable menu screen shown in the table below.