Outdoor unit for air to water heat pump ERLQ018BAVJU ; ERLQ024BAVJU ; ERLQ030BAVJU

This Installation Manual is for
Outdoor unit for air to water heat pump:

MODELS: ERLQ018BAVJU ; ERLQ024BAVJU ; ERLQ030BAVJU
 

CONTENTS:

  • 1. Definitions … page 1
  • 2. Introduction … page 2
  • 2.1. General information … page 2
  • 2.2. Model identification … page 2
  • 2.3. Combination and options … page 2
  • 2.4. Operation range … page 2
  • In cooling mode … page 2
  • In heating mode … page 2
  • In domestic water heating mode … page 2
  • 3. Accessories … page 3
  • 4. General safety precautions … page 3
  • 5. Overview of unit … page 3
  • 5.1. Opening the uni … page 3
  • 5.2. Main components … page 3
  • Unit … page 3
  • Switchbox … page 4
  • 5.3. Functional diagram … page 4
  • 6. Precautions on installation location … page 4
  • 6.1. General precautions … page 4
  • 6.2. Weather dependent precautions … page 5
  • 6.3. Selecting a location in cold climates … page 5
  • 6.4. Installing near a wall or obstacle … page 5
  • Wall facing one side … page 5
  • Walls facing two sides … page 5
  • Walls facing three sides … page 6
  • 6.5. Additional precautions … page 6
  • 7. Installation of the unit … page 6
  • 7.1. Unpacking the unit … page 6
  • 7.2. Inspection … page 6
  • 7.3. Handling the unit … page 6
  • 7.4. Installation instructions … page 6
  • Mounting the outdoor unit … page 6
  • Outdoor installation drawing … page 6
  • Drain work … page 7
  • 8. Refrigerant pipe size and allowable pipe
    length … page 7
  • 8.1. Refrigerant piping material … page 7
  • 8.2. Piping material selection … page 7
  • 8.3. Refrigerant piping specifications … page 7
  • 9. Precautions on refrigerant piping … page 7
  • 9.1. Guidelines for brazing … page 7
  • 9.2. Guidelines for flare connection … page 8
  • 9.3. Guidelines for handling the stop valve …page 8
  • Cautions for handling the stop valve … page 8
  • How to use the stop valve … page 8
  • Cautions for handling the stop valve cover … page 9
  • Cautions for handling the service port … page 9
  • Tightening torques … page 9
  • 10. Piping connection work … page 9
  • 10.1. Preventing foreign objects from
    entering … page 9
  • 10.2. Leak test and vacuum drying … page 9
  • General guidelines … page 9
  • Setup … page 9
  • Leak test … page 10
  • Vacuum drying …page 10
  • 10.3. Pipe insulation … page 10
  • Selection of heat insulation materials … page 10
  • 11. Charging refrigerant … page 10
  • 11.1. Additional refrigerant charging … page 11
  • 11.2. Precautions when adding R410A … page 11
  • 11.3. Charging amount … page 11
  • 12. Pump down operation … page 11
  • 12.1. Procedure … page 11
  • 13. Electric wiring work … page 11
  • 13.1. Switch box component list … page 12
  • 13.2. Field wiring … page 12
  • Procedure … page 12
  • Notes to observe … page 13
  • 14. Start-up and configuration … page 14