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Safety Precautions (Continued)
M ake sure that the refrigerant gas does not leak after completing the installation. If the refrigerant
gas of the indoor unit leaks and comes into contact with the fan heater, space heater or stove,
harmful gas will be generated.
E nsure that the national safety code requirements have been followed for the main supply circuit.
Ensure that a proper ground wire is in place. Do not connect the ground to a gas pipe, water pipe,
lightning rod or telephone grounding. Defective grounding could cause electric shock.
D o not install the unit in a place with direct sunlight, dangerous substances or where it is exposed
to inflammable gas leakage to prevent explosion, fire or personal injury.
P erform the installation securely referring to the installation manual. Incomplete installation could
cause personal injury due to fire, electric shock and water leakage or from the unit falling.
C heck first the following situations before starting the operation during the installation.
- The pipe must be properly connected and make sure there is no leakage.
- Service valves must be open. If compressor is operated with the service valve closed, excessive
pressure may damage parts of the compressor.
I f leakage occurs on any of the connection, air inflow may also cause excessive pressure that could
lead to explosion.
S top the compressor before disconnecting the refrigerant pipe for pump-down operation. If you
disconnect the refrigerant pipe while compressor is operating with service valve open, air inflow will
cause excessive pressure in the refrigerant cycle that could lead to explosion and personal injury.
D o not assemble the power cord on your own, use two cables together to extend the cable length
or tangle the cable. Bad connection, isolation and over voltage may cause fire or electric shock.
M ake sure to turn off the main power when setting up the indoor unit electrical circuit or power
cords. There is a risk of electric shock.
M ake sure that proper circuit breaker and safety switches are installed. Install a ground leakage
breaker depending on the installation place (where it is humid). If not, it may cause electric shock.
D o not install the unit by yourself (owners). Incorrect installation of the unit could cause injury due to
fire, electric shock and water leakage or from the unit falling. Consult a dealer or a qualified installer.
U se the unit on a single outlet circuit. Do not share the power outlet with other appliances. Obtain
the consent by a qualified installer before connecting the unit to the power supply system. An all
pole disconnection from the power supply must be incorporated in the fixed wiring with a contact
opening of >3mm.
M anufacturer is not responsible for accidents due to incorrect installation.
W hen you install the Air to water heat pump in a small room, you consider a proper ventilation to
prevent a leakage level within the maximum permissible limit.
- In that case, you may die from suffocation by some possibility.
Fix the outdoor unit securely to prepare against strong wind or earthquake.
- If the outdoor unit is not properly fixed, it turns over and accidents may occur.
If any gas or impurities except R410A refrigerant come into the refrigerant pipe, serious problem
may occur and it may cause injury.
Install the cables with supplied cables firmly. Fix them securely so that external force is not exerted
to the terminal board.
- If the connection or fixing is incomplete, it can cause trouble with a heat generation, electric
shock or fire and so on.
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