Daikin EWYD-BZ Manuals

Daikin EWYD-BZ Manuals

Manuals and User Guides for Daikin EWYD-BZ. We have 1 Daikin EWYD-BZ manual available for free PDF download: Operating Manual

Daikin EWYD-BZ Operating Manual

Daikin EWYD-BZ Operating Manual (35 pages)

Air Cooled chiller/heat pump with screw compressors

Brand: Daikin | Category: Chiller | Size: 1.55 MB

Table of Contents

Table of Contents
2
1 Safety Considerations

4
- General
  4
- Before Switching the Unit
  4
- Avoid Electrocution
  4
2 About this Document

5
- Contents
  5
- Revision History
  5
- Abbreviations Used
  5
- References
  5
3 Control System Description

6
- Architecture
  6
- Main Components
  7
- Components Operating Limits
  8
4 Using the Controller

9
- Mask Tree
  10
- Measure Units
  11
- Default Passwords
  11
5 Working with this Unit

12
- Controller Purpose
  12
- Unit Enabling
  12
- Unit Modes
  12
- Setpoints Management
  13
  - 4-20Ma Setpoint Override
    13
  - OAT Setpoint Override
    13
  - Return Setpoint Override
    14
- Compressors Capacity Control
  14
  - Automatic Control
    14
  - Manual Control
    16
- Compressors Timing
  19
- Compressors Protection
  19
- Compressors Startup Procedure
  19
- Fan Pre-Starting in Heating Mode
  19
- Prepurge Procedure with Electronic Expansion
  19
- Prepurge Procedure with Thermostatic Expansion
  19
- Oil Heating
  19
- Energy Saving Mode
  20
- Pumpdown
  20
- Low Ambient Temperature Start
  20
- Economizer Valve
  20
- Switch between Cooling and Heating Mode
  20
- Defrost Procedure
  21
- Liquid Injection
  21
- Heat Recovery Procedure
  21
  - Recovery Pump
    21
  - Recovery Control
    22
  - Compressor Limiting
    22
- Unit Limiting
  23
- Evaporator Pumps
  23
- Fans Control
  23
  - Fantroll
    23
    
    Fantroll in Cooling Mode
    24
    
    Fantroll in Heating Mode
    24
  - Variable Speed Driver
    25
    
    VSD in Cooling, Cooling Glycol or Ice Mode
    25
    
    VSD in Heating Mode
    26
  - Speedtroll
    26
  - Fans Control at Startup in Heating Mode
    26
- Other Functions
  26
  - Hot Chilled Water Start
    26
  - Fan Silent Mode
    26
- Unit and Compressors Status
  26
- Start-Up Sequence
  28
  - Unit Start-Up and Shut-Down Flowcharts
    28
  - Heat Recovery Start-Up and Shut-Down Flowcharts
    30
6 Alarms and Troubleshooting

32
- Unit Trips
  32
- Compressors Trip
  32
- Other Trips
  33
- Unit and Compressors Alarms and Corresponding Codes
  33

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