Install at a strong and ﬁ rm location which is able to withstand weight of the set. If the strength is not enough or installation is not properly done,

the set will drop and cause injury.

This equipment is strongly recommended to be installed with Residual Current Device (RCD) on-site according to the respective national wiring

rules or country–speciﬁ c safety measures in terms of residual current.

Use the attached accessories parts and speciﬁ ed parts for installation. Otherwise, it will cause the set to fall, water leakage, ﬁ re or electrical

shock.

Only use the supplied or speciﬁ ed installation parts. Else, it may cause unit vibrate loose, water leakage, electrical shock or ﬁ re.

The unit is only for use in closed water system. Utilization in an open water circuit may lead to excessive corrosion of water piping and risk of

incubating bacteria colonies, particularly Legionella, in water.

Select a location where in case of water leakage, the leakage will not cause damage to other properties.

When installing electrical equipment at wooden building of metal lath or wire lath, in accordance with electrical facility standard, no electrical

contact between equipment and building is allowed. Insulator must be installed in between.

Any work carried out on the Indoor Unit after removing any panels which is secured by screws, must be carried out under the supervision of

authorized dealer and licensed installation contractor.

This system is multi supply appliance. All circuits must be disconnected before accessing the unit terminals.

The piping installation work must be ﬂ ushed before Indoor Unit is connected to remove contaminants. Contaminants may damage the Indoor

Unit components.

This installation may be subjected to building regulation approval applicable to respective country that may require to notify the local authority

before installation.

Be aware that refrigerant may not contain an odour.

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.

Do not install the Indoor Unit at place where leakage of ﬂ ammable gas may occur. In case gas leaks and accumulates at surrounding of the

unit, it may cause ﬁ re.

Prevent liquid or vapor from entering sumps or sewers since vapor is heavier than air and may form suffocating atmospheres.

Do not install this appliance in a laundry room or other high humidity location. This condition will cause rust and damage to the unit.

Make sure the insulation of power supply cord does not contact hot part (i.e. water piping) to prevent from insulation failure (melt).

Do not apply excessive force to water pipes that may damage the pipes. If water leakage occurs, it will cause ﬂ ooding and damage to other

properties.

Select an installation location which is easy for maintenance.

Incorrect installation, service or repair of this Indoor Unit may increase the risk of rupture and this may result in loss or damage of property or

injury.

Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.

Power supply connection to Indoor Unit.

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

• Must follow local national wiring standard, regulation and this installation instruction.

• Strongly recommended to make permanent connection to a circuit breaker.

8 For Indoor Unit WH-SDC0509L3E5:

- Power Supply 1: Use approved 25A 2-poles circuit breaker with a minimum contact gap of 3.0mm.

- Power Supply 2: Use approved 15/16A 2-poles circuit breaker with a minimum contact gap of 3.0mm.

8 For Indoor Unit WH-SDC0509L6E5:

- Power Supply 1: Use approved 25A 2-poles circuit breaker with a minimum contact gap of 3.0mm.

- Power Supply 2: Use approved 30A 2-poles circuit breaker with a minimum contact gap of 3.0mm.

Ensure the correct polarity is maintained throughout all wiring. Otherwise, it will cause electrical shock or ﬁ re.

After installation, check the water leakage condition in connection area during test run. If leakage occurs, it will cause damage to other properties.

Installation work.

It may need two or more people to carry out the installation work. The weight of Indoor Unit might cause injury if carried by one person.

CAUTION