Operating instructions

The interface kits on the MicroTech II™ controller are as follows:
• BACnet Kit P/N 350147404: BACnet/IP, BACnet MS/TP, or BACnet Ethernet
• L
ONWORKS Kit P/N 350147401: LonTalk (FTT-10A)
• Modbus RTU
The following functions are available through the BAS where possible. Exact capabilities can vary
depending on the protocol in use.
• Enable/Disable chiller operation by setting the Unit Enable setpoint.
• Select the operating mode by setting the Unit Mode setpoint.
• Set the Cool LWT and Ice LWT setpoints.
• Read all digital and analog I/O values.
• Read Enable status of chiller.
• Read current operating mode and status (state) of chiller.
• Send a description of each alarm when it occurs.
Reference documents ED 15057, ED 15062 and ED 15063 can be obtained from the local McQuay
sales office, or they can also be found on
www.mcquay.com under Product Information > (chiller
type) > Control Integration.
®™ The following are trademarks or registered trademarks of their respective companies: BACnet
from the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., LonTalk,
LONMARK and LONWORKS from Echelon Corporation, and Modbus from Schneider Electric.
Unit
Vibration Isolators
Spring or neoprene-in-shear vibration isolators are available for field installation to reduce vibration
transmission through the unit base. See page
12 for detailed information on their installation.
Protective Base Guards
Optional factory installed vinyl-coated welded wire base guards provide all-around lower unit
protection on ground level installations. Coil guards are standard.
Copper Fin Condenser Coils
Copper fin condenser coils are available as an option on all models.
Black Fin Coils
Aluminum fin stock precoated with a phenolic coating with 1000 hour salt spray resistance (ASTM
B117-90).
Coated Fins
Copper or aluminum fins coated with ElectroFin® baked epoxy protective coating with 3000+ hour
salt spray resistance (ASTM B117-90).
Evaporator Insulation (AGZ-BM only)
Double insulation thickness (total of 1 ½ inch) for high humidity areas or low fluid temperatures.
Sound Reduction
Acoustical blankets are factory-installed on each compressor.
Hail and Wind Guards
A field-mounted option shipped as a kit including panels, fasteners, and instructions. See page 26 for
further information.
IMM ACZ/AGZ-4 ACZ / AGZ-BM 57