Air Conditioner

Installation Instructions

Safety Precautions

  • Read the following “SAFETY PRECAUTIONS” carefully before installation.
  • Confirm the type of gas used before installation.
  • Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model to be installed.
  • The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below. Incorrect installation due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.
WARNING
 This indication shows the possibility of causing death or serious injury.
CAUTION
 This indication shows the possibility of causing injury or damage to properties only.

The items to be followed are classified by the symbols:

 Symbol with white background denotes item that is PROHIBITED.
Symbol with dark background denotes item that must be carried out.
  • Carry out test running to confirm that no abnormality occurs after the installation. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

WARNING

Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. Any unfit method or using incompatible material may cause product damage, burst and serious injury.

Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit on veranda of a high rise building, child may climb up to outdoor unit and cross over the handrail causing an accident.

Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.

Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.

  • For R32/R410A model, use piping, flare nut and tools which is specified for R32/R410A refrigerant. Using of existing (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury. For R32 and R410A, the same flare nut on the outdoor unit side and pipe can be used.
  • Since the working pressure for R32/R410A is higher than that of refrigerant R22 model, replacing conventional piping and flare nuts on the outdoor unit side are recommended.
  • If reuse piping is unavoidable, refer to instruction “IN CASE OF REUSING EXISTING REFRIGERANT PIPING”.
  • Thickness of copper pipes used with R32/R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm.
  • It is desirable that the amount of residual oil less than 40 mg/10 m.

Do not use joint cable for indoor / outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force will have impact on the terminal. If connection or fixing is not perfect, it will cause heat up or fire at the connection.

This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone. Otherwise, it may cause electrical shock in case of equipment breakdown or insulation breakdown.

CAUTION

Handle the unit surface with care to avoid scratching the surface by sharp or rough items (e.g. fingernails, tools, rings, etc). Wear hand gloves when performing installation work.

Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

Select an installation location which is easy for maintenance.
Incorrect installation, service or repair of this air conditioner may increase the risk of rupture and this may result in loss damage or injury and/or property.

Power supply connection to the room air conditioner.

Use power supply cord 3 x 1.5 mm² (3/4 ~ 1.75HP), 3 x 2.5 mm² (2.0 ~ 2.5HP) type designation 60245 IEC 57 or heavier cord.

Connect the power supply cord of the air conditioner to the mains using one of the following method.

Power supply point should be in easily accessible place for power disconnection in case of emergency.

In some countries, permanent connection of this air conditioner to the power supply is prohibited.

  1. Power supply connection to the receptacle using power plug.
    Use an approved 15/16 A (3/4 ~ 1.75HP), 16 A (2.0HP), 20 A (2.5HP) power plug with earth pin for the connection to the socket.
  2. Power supply connection to a circuit breaker for the permanent connection.
    Use an approved 16 A (3/4 ~ 2.0HP), 20 A (2.5HP) circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.0 mm contact gap.