Daikin VRV FXMQ24PBVJU Installation Manual page 3

• Before touching electrical parts, turn off the unit.
• This equipment can be installed with a Ground-Fault Cir-
cuit Interrupter (GFCI). Although this is a recognized mea-
sure for additional protection, with the grounding system
in North America, a dedicated GFCI is not necessary.
• Securely fasten the outdoor unit terminal cover (panel). If
the terminal cover/panel is not installed properly, dust or
water may enter the outdoor unit causing fire or electric
shock.
• When installing or relocating the system, keep the refrig-
erant circuit free from substances other than the specified
refrigerant (R410A) such as air. Any presence of air or oth-
er foreign substance in the refrigerant circuit can cause
an abnormal pressure rise or rupture, resulting in injury.
• Do not change the setting of the protection devices. If the
pressure switch, thermal switch, or other protection de-
vice is shorted and operated forcibly, or parts other than
those specified by Daikin are used, fire or explosion may
occur.
CAUTION
• 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 pre-
vent injury.
• Do not touch the refrigerant pipes during and immediate-
ly after operation as the refrigerant pipes may be hot or
cold, depending on the condition of the refrigerant flow-
ing 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 inju-
ry, give the pipes time to return to normal temperature or,
if you must touch them, be sure to wear proper gloves.
• Heat exchanger fins are sharp enough to cut.
To avoid injury wear glove or cover the fins when working
around them.
• 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 supply immediately after stop-
ping operation. Always wait for at least 5 minutes before
turning off the power supply. Otherwise, water leakage
may occur.
• Do not use a charging cylinder. Using a charging cylinder
may cause the refrigerant to deteriorate.
• Refrigerant R410A 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 pre-
vented from getting into the system.
(b) Tight -- R410A does not contain any chlorine, does
not destroy the ozone layer, and does not reduce the
earth's protection again harmful ultraviolet radiation.
R410A 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 Work and follow
the procedures.
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• Since R410A is a blend, the required additional refriger-
ant 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 R410A. 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.
• Do not install the air conditioner in the following loca-
tions:
(a) Where a mineral oil mist or oil spray or vapor is pro-
duced, 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 car-
bon fiber, or ignitable dust suspension in the air, or
where volatile flammables such as thinner or gaso-
line are handled. Operating the unit in such condi-
tions can cause a fire.
• Take adequate measures to prevent the outdoor unit from
being used as a shelter by small animals. Small animals
making contact with electrical parts can cause malfunc-
tions, smoke, or fire. Instruct the customer to keep the
area around the unit clean.
NOTE
• Install the power supply and transmission wires for the
indoor and outdoor units at least 3.5 feet away from tele-
visions 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 rel-
evant local, state, and national regulations.
• Do not use the following tools that are used with conven-
tional 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 R410A, the refrigerant may deteriorate.
• This air conditioner is an appliance that should not be ac-
cessible to the general public.
• The wall thickness of field-installed pipes should be se-
lected in accordance with the relevant local, state, and
national regulations.
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