Daikin AWV026 Manuals

Manuals and User Guides for Daikin AWV026. We have 1 Daikin AWV026 manual available for free PDF download: Installation, Operation And Maintenance Manual

Daikin AWV026 Installation, Operation And Maintenance Manual (93 pages)

Air-cooled Screw Chillers 100 to 565 Tons (350 to 1985 kW) HFC-134a Refrigerant 60/50 Hz

Brand: Daikin | Category: Chiller | Size: 7.51 MB

Table of Contents
2
Pre-Start Checklist – Screw Chillers
3
Introduction
5
- General Description
  6
- Nomenclature
  6
- Operating Limits for AWV Chillers
  6
- Nameplates
  7
- Receiving and Handling
  7
- Unit Placement
  7
- AWV Unit Rigging
  7
Installation and Application Considerations
7
Dimensions - Remote Evaporators
32
Pressure Drop Data
39
- Operator Responsibilities
  42
- Operator Schools
  42
- Software Version
  42
- Controller Features
  42
Controller Operation
42
- System Architecture
  43
- Modbus Communication - Unit
  43
- Microtech III Inputs/Outputs
  44
- Economizer EXV Module
  45
- Alarm/Limit Module
  45
- Compressor Vfds
  45
- Rapidrestore Module
  45
- Set Points
  46
- Unit Level Set Points
  46
- Set Point Default and Range
  46
- Dynamic Set Point Ranges
  48
- Unit Test Mode Set Points
  48
- Administration and Service Support
  48
- Cool LWT Set Point Ranges
  48
- Fan VFD Configuration
  49
- Fan Staging Deadbands
  49
- Circuit Level Set Points
  49
- Circuit Test Mode Set Points
  50
- Calculations
  51
- Evaporator
  51
- Unit Enable
  51
Unit Functions
51
- Unit Control States
  52
- Unit Status
  52
- Unit Status Conditions
  52
- Ice Mode Start Delay
  53
- Low Ambient Lockout
  53
- Lockout and Stop Operation
  53
- Lockout Only Operation
  53
- Leaving Water Temp (LWT) Reset
  54
- Pump Selection
  54
- Primary/Standby Pump Staging
  54
- Freeze Protection
  54
- Unit Capacity Control
  55
- Maximum Circuits Running
  55
- Cool Mode Operation
  55
- Staging Sequence
  55
- Unit Capacity Limits
  56
- Demand Limit
  56
- Network Limit
  56
- Load Balancing
  56
- Operation Following Cycling of Power
  57
- Unit Level Changes
  57
- Circuit Level Changes
  57
- Feedback Capacity
  58
- Approach Values
  58
- Superheat Values
  58
Circuit Functions
58
- Circuit Availability
  59
- Circuit States
  59
- Oil Sump Check
  59
- Circuit Status
  60
- Compressor Control
  60
- Run Command Output
  60
- Cycle Timers
  60
- Condenser Fan Control
  61
- VR Solenoid Valve Control
  61
- Physical Fan Layout
  61
- Manual Speed Control
  61
- Saturated Condenser Temp Target
  62
- Minimum Target Value
  62
- Condenser Fan Control State
  62
- Fan Control – no VFD or 1St Fan VFD
  62
- Fan Outputs Per Fan Stage
  63
- Staging Concept
  63
- Staging up
  63
- Digital Outputs Energized for each Stage
  63
- VFD on 1St Fan of each Circuit
  64
- Fan Control - All Fans with VFD
  64
- Normal Control
  64
- Stage up Compensation
  64
- Evaporator EXV Control
  65
- Closed State
  65
- Preopen Operation
  65
- Pressure Control State
  65
- Operation – Closed State
  66
- Superheat Control State
  66
- Economizer EXV Control
  66
- MOP Control State
  66
- Liquid Line Solenoid Valve
  67
- High Water Temperature Capacity Limit
  67
- Circuit Capacity Overrides
  67
- Alarm Logging
  68
- Signaling Alarms
  68
- Clearing Alarms/Faults
  68
- Description of Alarms
  68
Alarms and Events
68
- Evaporator Water Temperatures Inverted
  69
- Evaporator LWT Sensor Fault
  69
- Evaporator Water Freeze Protect
  69
- Evaporator Flow Loss
  69
- OAT Sensor Fault
  70
- External Alarm
  70
- Emergency Stop
  70
- Evaporator EWT Sensor Fault
  70
- Circuit Alarms
  71
- Evaporator Pump #1 Failure
  71
- Economizer EXV Module Comm Failure
  71
- Bad Demand Limit Input
  71
- High Condenser Pressure
  72
- Low Pressure Difference or Ratio
  72
- Mechanical Low Pressure Switch
  72
- Mechanical High Pressure Switch
  72
- High Motor Temperature
  73
- Compressor Multiple Start Failure
  73
- High Oil Pressure Difference
  73
- High Discharge Temperature
  73
- Low Discharge Superheat
  74
- High Motor Current
  74
- High Compressor VFD Current
  74
- Compressor VFD Temperature High
  74
- CC Module Comm Failure
  75
- EEXV Module Comm Failure
  75
- Evaporator Pressure Sensor Fault
  75
- Condenser Pressure Sensor Fault
  75
- Discharge Temperature Sensor Fault
  76
- Evaporator EXV Motor Error
  76
- Power Loss While Running
  76
- Failed Pumpdown
  76
- Low Evaporator Pressure - Unload
  77
- Low Evaporator Pressure - Hold
  77
- DC Fan Motor Fault
  77
- Events
  77
- Low Pressure Difference or Ratio Shutdown
  78
- High Motor Current – Hold
  78
- High Motor Current - Unload
  78
- High VFD Line Current Hold
  78
- High VFD Temperature Hold
  79
- High VFD Temperature Unload
  79
- Compressor Start Failure
  79
- Unit Controller Operation
  80
- Navigating
  80
- Passwords
  80
- Typical Screen
  80
Using the Controller
80
- Example of Screen Menu
  81
- Navigation Mode
  81
- Edit Mode
  81
- HMI Keypad Navigation
  82
- Pre-Startup
  83
- Temporary Shutdown
  83
- Startup after Temporary Shutdown
  83
Startup and Shutdown
83
System Maintenance
85
- Oil Filter Housing Cover Plate
  86
- Fitting a New Oil Filter Element – Reassembly
  86
- All-Aluminum Condenser Coils
  86
- Electrical Terminals
  86
- Cleaning Microchannel Aluminum Coils
  87
- Remove Surface Loaded Fibers
  87
- Cleaning Epoxy Coated Coils
  87
- Routine Quarterly Cleaning of Epoxy Coil
  87
- Liquid Line Sight Glass
  88
- Lead-Lag
  88
- Pump Operation
  88
- Harsh Chemical and Acid Cleaners
  88
- Preventative Maintenance Schedule
  89
- Definitions
  90
- Active Set Point
  90
- Active Capacity Limit
  90
- Deadband
  90
Appendix
90

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