Air-Cooled Scroll Compressor Units ACZ010BS – ACZ 039BS Condensing Units AGZ010BS – AGZ 034BS Chillers AGZ010BM – AGZ 034BM Chillers with Remote Evaporators 10 to 40 Tons (35 to 140 kW) 60 Hertz R-407C

Manufactured in an ISO certified facility Document Number: Initial Issue: Revision Date: Replaces: Catalog ACZ-AGZB1-1 October 2007 March 2012 June 2011 © 2013 Daikin Applied. Illustrations and data cover the Daikin product at the time of publication and we reserve the right to make changes in design and construction at anytime without notice. ™® The following are trademarks or registered trademarks of their respective companies: BACnet from ASHRAE; LONMARK, LonTalk, LONWORKS, and the LONMARK logo are managed, granted and used by LONMARK International under a license granted by Echelon Corporation;...

Introduction This catalog covers air-cooled, single circuit, R-407C, scroll compressor chillers and condensing units as follows: ACZ 010BS – ACZ 039BS condensing units, 10 to 39 tons AGZ 010BS – AGZ 034BS packaged chillers, 10 to 34 tons AGZ 010BM – AGZ 034BM chiller with remote, 10 to 34 tons, matching water cooler, shipped separately for field installation, usually indoors These units utilize a single refrigerant circuit using a set of tandem scroll compressors. They continue Daikin’s legacy of high quality, high efficiency, latest technology and quiet operation. These features make the ACZ...

Features and Benefits ACZ-AGZ, Single Circuit Units Great values also come in small packages. The ACZ and AGZ units have a single refrigerant circuit with capacities from 10 to over 34 tons. Customer benefits include high efficiency operation, low sound levels, efficient and reliable scroll compressor technology, and MicroTech II controls. High Efficiency Operation These units operate at high efficiency with IPLVs up to 14.6 EER. Through the use of tandem scroll compressors and the latest control technology, excellent part load performance occurs. With a single compressor running, the entire...

Design Features The Daikin air-cooled, scroll compressor units are a product of Daikin’s commitment to offer quiet, reliable, energy efficient equipment. These units incorporate high quality compressors, state-of-the-art coil design, and innovative packaging. Construction Factory assembled and mounted on a heavy-gauge steel channel base. The base rails, supports and cabinetry are powder-coat painted. The base distributes the unit weight for roof loading. Varied and convenient installation is possible by virtue of the unit's small footprint. Compressors Copeland’s Compliant Scroll tandem compressors...

Electrical Control Center Operating and equipment protection controls and motor starting components are separately housed in a centrally located, weather-resistant control panel with hinged and tool-locked doors. In addition to the MicroTech II controller described in the next sections, the following components are housed in the panel: Standard single-point, terminal block connection Control, input, and output terminal block Control transformer Phase voltage monitor with under/over voltage and phase reversal protection Fan contactors with short circuit protective devices The standard FanTrol...

cause of the shutdown will be retained in memory and can be easily displayed in English or metric units for operator review. The MicroTech II unit controller can also retain and display the time that the fault occurred and the operating conditions that were present at the time of the fault, an extremely useful feature for troubleshooting. In addition to displaying alarm diagnostics, the MicroTech II controller also provides the operator with a warning of pre-alarm conditions. Alarm notification data can also be passed on to your BAS through an optional communications module. Staging On ACZ condensing...

The MicroTech II™ controller provides control of condenser fans. The controller stages condenser fans based Building Automation System (BAS) Interface The following BAS standard protocols are supported through Daikin's Open Choices™ option: • BACnet MS/TP® • BACnet Ethernet® The following functions are generally available depending on the application and protocol in use: • Enable/disable operation • Select operating mode • Set the network limit variable • Read all digital and analog inputs and outputs • Read operating mode and status • Send a description of each alarm when it occurs A 4-line...

Figure 3, ACZ/AGZ-B Control Panel Optional Remote Interface Panel The ACZ/AGZ units can be individually equipped with a remote user interface. It provides convenient access to unit diagnostics and control adjustments, remote from the condensing unit panel. A separate panel is required for each chiller on a job site. Each remote user interface is similar to its unit-mounted counterpart and offers the same functionality, including: Touch-sensitive keypad with a 4 line by 20-character display format Digital display of messages in English language All operating conditions, system alarms, control...

Figure 5, Remote User Interface Wiring Diagram pLAN p cable D pLAN phone style cable to J10 of chiller Unit control Chiller Terminal Board Display Terminal Board Note: Maximum distance between terminal blocks is 1640 feet (500 m) A Power is supplied through AWG22 twisted pair cable Power Common RX+/Tx+ Rx-/TxShield Communications cable is Belden 9841 or equivalent AWG22 twisted pair

ACZ Condensing Unit Performance Selection Procedure ACZ condensing units are selected in conjunction with some kind of evaporator equipment. The ACZ ratings are based on saturated suction temperature at the compressor inlet and on ambient air dry-bulb temperature. For a system selection, the ACZ condensing unit is usually selected first, and then the line loss added to the condensing unit saturated suction temperature to determine the saturated evaporating temperature. This temperature is then used for the selection of the evaporator, whether it is a DX cooling coil or water heat exchanger. The...