User Manuals: Daikin EKEXV250 Air Handling Kit

Manuals and User Guides for Daikin EKEXV250 Air Handling Kit. We have 1 Daikin EKEXV250 Air Handling Kit manual available for free PDF download: Service Manual

Daikin EKEXV250 Service Manual

Daikin EKEXV250 Service Manual (153 pages)

Condensing Unit Three Phase

Brand: Daikin | Category: Air Conditioner | Size: 7 MB

Table of Contents

Table of Contents

3
- Introduction
  7
- Safety Cautions
  7
Model Names of Outdoor Unit, Control Box and Expansion Valve Kit/Combination Table

11
- Model Names of Outdoor Unit, Control Box and Expansion Valve Kit
  12
- Outdoor Units
  12
- Control Box
  13
- Expansion Valve Kit
  14
- Combination Table
  15
- Outdoor Units
  18
- Specifications
  18
Refrigerant Circuit/Functional Parts Layout

21
- Erq 125 A7W1B
  22
- Refrigerant Circuit
  22
- Erq 200 A7W1B
  24
- Erq 250 A7W1B
  26
- Erq 125 A7W1B
  28
- Functional Parts Layout
  28
- Erq 200 A7W1B
  29
- Erq 250 A7W1B
  30
Table of Contents

31
- Function General
  32
- Symbol
  32
- Operation Mode
  33
- Basic Control
  34
- Normal Operation
  34
- Compressor PI Control
  35
- Step Control of Outdoor Unit Fans
  37
- Outdoor Unit Fan Control in Cooling Operation
  38
- Special Control
  39
- Startup Control
  39
- Oil Return Operation
  40
- Defrosting Operation
  42
- Pump-Down Residual Operation
  43
- Standby
  44
- Stopping Operation
  45
- High Pressure Protection Control
  46
- Protection Control
  46
- Low Pressure Protection Control
  47
- Discharge Pipe Protection Control
  48
- Inverter Protection Control
  49
- Injection Control (Only for ERQ 125 A7W1B)
  50
- STD Compressor Overload Protection
  50
- Emergency Operation (Only for ERQ 250 A7W1B)
  51
- Other Control
  51
- Demand Operation
  53
- Heating Operation Prohibition
  53
- Outline of Control
  54
- Thermostat Sensor in Remote Control (Only for Z-Control)
  54
- Hot Start Control (in Heating Operation Only)
  55
- Freeze Prevention
  56
- Low Outdoor Air Temperature Protection Control
  57
Table of Contents

59
- Different Systems with Their Control Boxes
  60
- System A: PAIR
  60
- System B: MULTI
  62
- W-, X-, Y-, Z-Control
  65
- W-Control
  65
- X-Control
  67
- Y-Control
  68
- Z-Control
  68
- D-Box
  70
- Wiring Diagram of Control Box
  70
- F-Box
  71
- Attention Points
  72
- System A: EKEQF & EKEQD-Box: Installation and Operation Manual
  73
Installation and

77
- Accessories
  78
- Before Installation
  78
- Installation
  78
- Name and Function of Parts
  78
- Piping Installation
  80
- Refrigerant Piping Work
  80
- Selecting the Installation Site
  80
- Valve Kit Installation
  80
- Installation of the Electrical Control Box
  82
- Electric Wiring Work
  83
- Installation of Thermistors
  86
- Operation and Maintenance
  87
- Test Operation
  87
- What to Do before Operation
  87
- Operation and Display Signals
  89
- Disposal Requirements
  90
- Maintenance
  90
- Troubleshooting
  90
- System B: EKEQM-Box: Installation and Operation Manual
  93
Installation and

96
- Accessories
  97
- Before Installation
  97
- Installation
  97
- Name and Function of Parts
  97
- Piping Installation
  98
- Selecting the Installation Site
  98
- Valve Kit Installation
  100
- Electric Wiring Work
  101
- Installation of the Electrical Control Box
  101
- Installation of Thermistors
  103
- Operation and Display Signals
  104
- Operation and Maintenance
  104
- Refrigerant Piping Work
  104
- Test Operation
  104
- What to Do before Operation
  104
- Disposal Requirements
  105
- Maintenance
  105
- Troubleshooting
  105
Table of Contents

106
- Installation Process
  107
- Test Operation
  107
- Procedure and Outline
  108
- Operation When Power Is Turned on
  121
- Outdoor Unit PC Board Layout
  122
- Field Setting
  123
- Field Setting from Remote Controller
  123
- Field Setting
  124
- Field Setting from Remote Controller
  124
- Field Setting from Outdoor Unit
  132
- Field Setting from Outdoor Unit
  133

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