Daikin H-Series, Engineering Data

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EDUS04-924A Installation Manual
Room Air Conditioners H-Series 25
parts other than those specified by Daikin are used,
fire or explosion may occur.
• Do not touch the switch with wet fingers. Touching a
switch with wet fingers can cause electric shock.
• Do not allow children to play on or around the unit to
prevent injury.
• The heat exchanger fins are sharp enough to cut. To
avoid injury wear gloves or cover the fins while
working around them.
• Do not touch the refrigerant pipes during and
immediately after operation as the refrigerant pipes
may be hot or cold, depending on the condition of the
refrigerant flowing through the refrigerant piping,
compressor, and other refrigerant cycle parts. Your
hands may suffer burns or frostbite if you touch the
refrigerant pipes. To avoid injury, give the pipes time
to return to normal temperature or, if you must touch
them, be sure to wear proper gloves.
• Install drain piping to proper drainage. Improper drain
piping may result in water leakage and property
damage.
• Insulate piping to prevent condensation.
• Be careful when transporting the product.
• Do not turn off the power immediately after stopping
operation. Always wait for at least 5 minutes before
turning off the power. Otherwise, water leakage may
occur.
• Do not use a charging cylinder. Using a charging
cylinder may cause the refrigerant to deteriorate.
• Refrigerant R-410A in the system must be kept clean,
dry, and tight.
(a) Clean and Dry -- Foreign materials (including
mineral oils such as SUNISO oil or moisture)
should be prevented from getting into the system.
(b) Tight -- R-410A does not contain any chlorine,
does not destroy the ozone layer, and does not
reduce the earth’s protection again harmful
ultraviolet radiation. R-410A can contribute to the
greenhouse effect if it is released. Therefore take
proper measures to check for the tightness of the
refrigerant piping installation. Read the chapter
Refrigerant Piping and follow the procedures.
• Since R-410A is a blend, the required additional
refrigerant must be charged in its liquid state. If the
refrigerant is charged in a state of gas, its
composition can change and the system will not work
properly.
• The indoor unit is for R-410A. See the catalog for
indoor models that can be connected. Normal
operation is not possible when connected to other
units.
• Remote controller (wireless kit) transmitting distance
can be shorter than expected in rooms with electronic
fluorescent lamps (inverter or rapid start types).
Install the indoor unit far away from fluorescent lamps
as much as possible.
• Indoor units are for indoor installation only. Outdoor
units can be installed either outdoors or indoors. This
unit is for indoor use.
• Do not install the air conditioner or heat pump in the
following locations:
(a) Where a mineral oil mist or oil spray or vapor is
produced, for example, in a kitchen.
Plastic parts may deteriorate and fall off or result in
water leakage.
(b) Where corrosive gas, such as sulfurous acid gas, is
produced.
Corroding copper pipes or soldered parts may result
in refrigerant leakage.
(c) Near machinery emitting electromagnetic waves.
Electromagnetic waves may disturb the operation of
the control system and cause the unit to
malfunction.
(d) Where flammable gas may leak, where there is
carbon fiber, or ignitable dust suspension in the air,
or where volatile flammables such as thinner or
gasoline are handled. Operating the unit in such
conditions can cause a fire.
• Take adequate measures to prevent the outside unit
from being used as a shelter by small animals. Small
animals making contact with electrical parts can
cause malfunctions, smoke, or fire. Instruct the
customer to keep the area around the unit clean.
• Install the power supply and control wires for the indoor
and outdoor units at least 3.5 feet away from televisions
or radios to prevent image interference or noise.
Depending on the radio waves, a distance of 3.5 feet may
not be sufficient to eliminate the noise.
• Dismantling the unit, treatment of the refrigerant, oil
and additional parts must be done in accordance with
the relevant local, state, and national regulations.
• Do not use the following tools that are used with
conventional refrigerants: gauge manifold, charge
hose, gas leak detector, reverse flow check valve,
refrigerant charge base, vacuum gauge, or refrigerant
recovery equipment.
• If the conventional refrigerant and refrigerator oil are
mixed in R-410A, the refrigerant may deteriorate.
• This air conditioner or heat pump is an appliance that
should not be accessible to the general public.
• As design pressure is 478 psi, the wall thickness of
field-installed pipes should be selected in accordance
with the relevant local, state, and national regulations.