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Air-Cooled Scroll Compressor Water Chillers

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Air-Cooled Scroll Compressor Water Chillers Installation, Operation and Maintenance Manual IOMM 1155-1 Group: Chiller Part Number: 331975001 Effective: July 2016 Supersedes: March 2012 Air-Cooled Scroll Compressor Water Chillers AGZ 010BS – AGZ 034BS, Packaged Chiller AGZ 010BM – AGZ 034BM, Remote Evaporator 10 to 34 Tons, 35 to 120 kW R-407C 60 Hertz Software Version AGZSU0102D Table of Contents Lubrication.............................................. 31 Introduction........................................3 Electrical Terminals ................................ 31 General Description...................................3 Condensers.............................................. 31 Inspection ..................................................3 Refrigerant Sight glass............................ 31 Installation.................................................3 Handling ....................................................3 Standard MicroTech II Controller.32 Location.....................................................4 Table of Contents.................................... 32 Service Access...........................................4 Overview................................................. 33 Vibration Isolators .....................................5 General Description ................................ 33 Chilled Water System ................................9 Setpoint Security..................................... 37 Water Connections...................................11 Equipment Protection Alarms................. 37 Refrigerant Charge ..................................11 Control Functions and Definitions.......... 38 Unit Component Location .......................11 Unit Enable ............................................. 39 Glycol Solutions......................................12 Unit Mode............................................... 39 Evaporator Water Flow and Pressure Drop12 Power Up Start Delay ............................. 40 Ice Mode Start Delay .............................. 40 R-407C Units ....................................14 Unit State ................................................ 40 Control Layout and Operation.......16 Evaporator Water Pump State Control.... 41 Control Center .........................................16 Condenser Fans....................................... 43 Low OAT Start........................................ 43 Start-up and Shutdown....................16 Circuit Capacity Overrides ..................... 43 Pre Start-up..............................................16 Maximum LWT Rate .............................. 44 Start-up ....................................................16 Low Ambient Lockout............................ 44 Sequence of Operation ............................17 Compressor Control................................ 44 Physical Data ....................................18 Using the Controller................................ 47 AGZ-BS, R-407C....................................18 Menu Screens.......................................... 48 AGZ-BM, R-407C...................................20 BAS Interface...................................60 Electrical Data..................................22 Service...............................................61 Field Wiring.............................................22 Thermostatic Expansion Valve ............... 61 R-407C ....................................................22 Filter-Driers............................................. 61 Notes for Electrical Data .........................25 Liquid Line Solenoid .............................. 61 Dimensions & Weights.....................27 Optional Controls.................................... 62 Remote Evaporators ................................29 Troubleshooting Chart ............................ 65 ACZ/AGZ Dimensions and Weights.......30 System Maintenance ........................31 General ....................................................31 ©2016 Daikin. 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; Compliant Scroll from Copeland Corporation; ElectroFin from AST ElectroFin Inc.; Modbus from Schneider Electric; FanTrol, MicroTech II, Open Choices, and SpeedTrol from Daikin. 2 AGZ 010B through 034B IOMM 1155-1 Pre-Start Checklist – Scroll Compressor Chillers Must be completed, signed and provided to Daikin Applied at least 2 weeks prior to requested start date. Job Name Installation Location Customer Order Number Model Number(s) G.O. Number(s) Chilled Water Yes No N/A Initials Piping Complete Water strainer : Shell & Tube Evaporators 0.125”(3.175mm) or smaller perforations Brazed Plate Evaporator 0.063” (1.6mm) or smaller perforations Water System filled, flushed and vented Pumps installed and operational (rotation checked, strainers cleaned) Controls operational (3-way valves, face/bypass dampers, bypass valves, etc.) Water system operated and tested; flow meets unit design requirements Flow switch installed and wired Vent installed on evaporator Glycol at design % Electrical Yes No N/A Initials Building controls operational *Power leads connected to power block or optional disconnect Power leads have been checked for proper phasing and voltage All interlock wiring complete and compliant with Daikin specifications Power applied at least 24 hours before startup Oil heaters energized at least 24 hours before startup Chiller components (EXV Sensors Transducers) installed and wired properly. *Wiring complies with National Electrical Code and local codes (See Notes) Remote EXV wired with shielded cable Miscellaneous Yes No N/A Initials Unit control switches all off Remote Evaporator /Condenser Piping factory reviewed All refrigerant components/piping leak tested, evacuated and charged Thermometers, wells, gauges, control, etc., installed Minimum system load of 80% capacity available for testing/adjusting controls Document Attached: Technical Breakdown from Selection Software Document Attached: Final Order Acknowledgement Document Attached: Remote piping approval Notes: The most common problems delaying start-up and affecting unit reliability are: 1. Field installed compressor motor power supply leads too small. Questions: Contact the local Daikin sales representative*. State size, number and type of conductors and conduits installed: a. From Power supply to chiller * Refer to NEC Article 430-22 (a) 2. Remote Evaporator piping incomplete or incorrect. Provide approved piping diagrams. 3. Items on this list incorrectly acknowledged resulting in delayed start and possible extra expenses incurred by return trips. Contractor Representative Daikin Applied Sales Representative Signed: Signed: Name: Name: Company: Company: Date: Date: Phone/Email: Phone/Email: ©2013 Daikin Applied Form SF01017 P/N 331977001 22OCT2013 Introduction General Description Daikin air-cooled water chillers are complete, self-contained automatic refrigerating units. Every unit is completely assembled, factory wired, charged, and tested. Each unit consists of air-cooled condensers, Copeland Compliant Scroll hermetic compressor, brazed plate-to-plate evaporator, and complete refrigerant piping. Liquid line components include sight-glass/moisture indicator, solenoid valve, and thermal expansion valve. Other features include a compressor heater, and evaporator heater for chilled water freeze protection. The electrical control center includes all equipment protection and operating controls necessary for automatic operation. Condenser fan motors are three-phase (except single-phase on No. 1 fan with SpeedTrol option) and started by their own contactors and have inherent overload protection. Each compressor has solid-state motor protection for inherent thermal overload protection except Model AGZ 010 that has internal line breakage. Software Version This manual is based on software version AGZSU0102D. The software version can be displayed by pressing the Enter and Menu keys simultaneously. Exit by pressing Menu. Inspection Check all items carefully against the bill of lading. Inspect all units for damage upon arrival. Report shipping damage and file a claim with the carrier. Check the unit nameplate before unloading to be sure it agrees with the power supply available. Units are shipped FOB factory and Daikin is not responsible for physical damage after unit leaves the factory. Note: Unit shipping and operating weights are listed on pages 18 and 19. Installation Note: Installation must be performed by trained, experienced personnel who are familiar with local codes and regulations, especially concerning refrigerant release to the atmosphere. ! WARNING Sharp edges and coil surfaces can cause personal injury. Avoid contact with them. Handling Be careful to avoid rough handling of the unit. Do not push or pull the unit from anything other than the base. Block the pushing vehicle away from the unit to prevent damage to the sheet-metal cabinet and end frame (see Figure 1). To lift the unit, lifting slots are provided in the base of the unit. Arrange spreader bars and cables to prevent damage to condenser coils or cabinet (see Figure 2). When moving refrigerant to/from the chiller from an auxillary tank, a grounding strap must be used. HAZARD IDENTIFICATION INFORMATION ! WARNING Warnings indicate potentially
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