Midea LRSJ-120/NYN1, Technical Manual

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1. Precautions
To prevent injury to the user or other people and property damage, the following instructions must be
followed. Incorrect operation due to ignoring of instructions may cause harm or damage.
The safety precautions listed here are divided into two categories. In either case, important safety
instructions are listed to which close attention must be paid.
WARNING
Failure to observe a warning may result in death.
CAUTION
Failure to observe a caution may result in injury or damage to the equipment.
WARNING
■ The water heating unit must be earthed effectively.
■ A creepage breaker must be installed near the power supply.
■ Ask your supplier for installation of the air source heat pump water heating units. Incomplete installation
performed by yourself may result in water leakage, electric shock, or fire.
■ Ask your supplier for the repair and maintenance. Incomplete repair and maintenance may result in
water leakage, electric shock or fire.
■ In order to avoid electric shock, fire or injury, if any abnormality is detected, such as smell of fire, turn off
the power supply and call your supplier for instructions.
■ Never replace a fuse with that of wrong rated current or other wires when a fuse blows out. Use of
wrong wire or copper wire may cause the unit to break down or a fire.
■ Do not insert fingers, rods or other objects into the air inlet or outlet. When the fan is rotating at high
speed, it will cause injury.
■ Never use a flammable spray such as hair spray, lacquer paint near the unit. It may cause a fire.
■ Never touch the air outlet or the horizontal blades while the swing flap is in operation. Fingers may
become caught or the unit may break down.
■ Never put any objects into the air inlet or outlet. Objects touching the fan of high speed can be
dangerous.
■ Do not dispose this product as unsorted municipal waste. Collection of such waste separately for
special treatment is necessary.
■ The appliance shall be installed in accordance with national wiring regulations.
CAUTION
■ Do not use the air-source water heater for other purposes.
■ Before cleaning, be sure to stop the operation and turn the breaker off or pull out the power cord.
Otherwise, an electric shock and injury may be caused.
■ In order to avoid injury, do not remove the fan guard on the outdoor unit.
■ Do not operate the air-source water heater with a wet hand. An electric shock may be caused.
■ In the place and the wall where water may be spattered, the installation height must be more than 1.8m.
■ At the water inlet, the One Way valve must be installed.
■ It’s normal if some water drips from the hole of PT valve in operation. But, if the water is in a great
amount, call your supplier for instructions.
■ After a long use, check the unit stand and fittings. If damaged, the unit may fall and result in injury.
■ Arrange the drain hose to ensure smooth drainpipe. Incomplete drainpipe may cause wetting of the
building, furniture etc.
■ Never touch the internal parts of the controller.