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Installation and Maintenance Manual
MicroTech
®
Modbus
Communication Module
®
ACZ
Air-Cooled Scroll Condensing Unit
AGS
Air-Cooled Global Screw
AGZ
Air-Cooled Global Scroll
HDC
Water-Cooled Dual-Compressor Centrifugal, Heat Recovery
HSC
Water-Cooled Single-Compressor Centrifugal, Heat Recovery
TGZ
Templifier
TSC
Water-Cooled Single-Compressor Centrifugal, Templifier
WCC
Water-Cooled Centrifugal, Dual Compressor Series Counterflow
WDC
Water-Cooled Centrifugal, Dual-Compressor
WGS
Water-Cooled Global Screw
WGZ
Water-Cooled Global Scroll
WMC
Water-Cooled Centrifugal, Magnetic Bearing
WPV
Water-Cooled Centrifugal, Single-Compressor
WSC
Water-Cooled Centrifugal, Single-Compressor
II Chiller
Water Heater
®
IM 743-7
Group: Controls
Part Number: IM 743
Date: June 2022
®
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Related Manuals for Daikin ACZ
Summary of Contents for Daikin ACZ
- Page 1 Installation and Maintenance Manual IM 743-7 Group: Controls Part Number: IM 743 Date: June 2022 MicroTech II Chiller ® Modbus Communication Module ® Air-Cooled Scroll Condensing Unit Air-Cooled Global Screw Air-Cooled Global Scroll Water-Cooled Dual-Compressor Centrifugal, Heat Recovery Water-Cooled Single-Compressor Centrifugal, Heat Recovery Templifier Water Heater ®...
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Page 2: Table Of Contents
© 2022 Daikin Applied, Minneapolis MN. All rights reserved throughout the world Daikin Applied reserves the right to change any information contained herein without prior notice. The user is responsible for determining whether this product is appropriate for his or her application. -
Page 3: Introduction
II unit controllers on ® Consult your local Daikin Applied representative for warranty Daikin Applied chillers. It describes how to install or replace details. To find your local Daikin Applied representative, go to a Modbus communication module on a MicroTech II chiller ®... -
Page 4: Hazardous Information Messages
Agency Listings - Unit Controller to correct the interference at his or her own expense. Daikin disclaims any UL 873 liability resulting from any interference or for the correction thereof. -
Page 5: Component Data
Introduction Component Data The Modbus communication module is a printed circuit board that inserts directly into the serial card slot of the MicroTech II chiller unit controller as shown in Figure Figure 1: Modbus Communication Module Attached to Unit Controller Modbus Network Connector Figure 2 shows the two important features of the... -
Page 6: Installation
Installation Installation and Mounting Installation The following section describes how to field install a new Figure 4: Remove Serial Card Slot Cover Modbus communication module or replace an existing module on the MicroTech II chiller unit controller. CAUTION Electrostatic discharge hazard. Can cause equipment damage. - Page 7 Installation Figure 7: Serial Card Slot Connectors NOTE: This operation relies more on fitting the 8. Mount the plastic cover on the serial card slot. Slip the communication module into the connector than cover over the network connector plug (Figure seeing the connectors mate.
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Page 8: Replacing A Communication Module
Installation 9. Insert the plug-in connector to the communication Figure 9: Modbus Communication Module Cover module. 10. Replace the cover on the serial card slot. Slip the cover over the network connector plug (Figure 11. Insert the network cable connector into the communication module. -
Page 9: Network Configuration
WGZ/TGZ 2001 Modbus. Note: Chiller models AGZ-A/B, ACZ-A/B, WGZ, and TGZ have a single unit NOTE: If using the OITS panel, in the SETPOINTS/MODE controller. Models AGS-B/C and WGS have one unit controller with multiple circuit controllers. Unit settings for AGS-B/C and WGS models are adjusted screen, set the #9 setpoint = to Modbus. -
Page 10: Additional Modbus Configuration Parameters
Network Configuration Additional Modbus Configuration Follow these steps to configure the required parameters for the communication module. Refer to Table 2 for default values and Parameters acceptable ranges. The communication module and unit controller support a NOTE: The Network Address (ID or Ident Number), number of Modbus setpoints. -
Page 11: Parts And Service
→ Verify the unit controller is set up to communicate Modbus using the keypad/display. Refer to the Network Contact the Daikin Applied Controls Customer Support group Configuration section or the MicroTech II Chiller Unit at 866-462-7829 for additional assistance, if necessary. - Page 12 Daikin Applied Training and Development Now that you have made an investment in modern, efficient Daikin equipment, its care should be a high priority. For training information on all Daikin HVAC products, please visit us at www.DaikinApplied.com and click on Training, or call 540-248-9646 and ask for the Training Department.
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