Daikin REQ71B8V3B, Installation Manual

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REQ71+10 REQ7 REQ71~12 REQ71B2W1B
Split System air conditioners
4PW23690-1C Installation manual
2
Caution
■
Ground the air conditioner.
Grounding resistance should be according to national
regulations
Do not connect the earth wire to gas or water pipes,
lightning conductor or telephone earth wire.
Incomplete grounding may cause electric shocks.
■
Gas pipe.
Ignition or explosion may occur if the gas leaks.
■
Water pipe.
Hard vinyl tubes are not effective grounds.
■
Lightning conductor or telephone ground wire.
Electric potential may rise abnormally if struck by a lightning
bolt.
■
Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may cause electric
shocks and fire.
■
Install drain piping according to this installation manual to
ensure good drainage, and insulate the pipe to prevent
condensation.
Improper drain piping may cause water leakage, and make the
furnitures get wet.
■
Install the indoor and outdoor units, power wire and connecting
wire at least 1 meter away from televisions or radios to prevent
image interference or noise.
(Depending on the radio waves, a distance of 1 meter may not
be sufficient to eliminate the noise.)
■
Do not install the air conditioner in places such as the following:
■
Where there is mist of mineral oil, oil spray or vapor for
example a kitchen.
Plastic parts may deteriorate, and cause them to fall out or
water to leak.
■
Where corrosive gas, such as sulfurous acid gas, is
produced.
Corrosion of copper pipes or soldered parts may cause the
refrigerant to leak.
■
Where there is machinery which emits electromagnetic
waves.
Electromagnetic waves may disturb the control system, and
cause malfunction of the equipment.
■
Where flammable gases may leak, where carbon fiber or
ignitable dust is suspended in the air or where volatile
flammables, such as thinner or gasoline, are handled.
Such gases may cause a fire.
■
Where the air contains high levels of salt such as that near
the ocean.
■
Where voltage fluctuates a lot, such as that in factories.
■
In vehicles or vessels.
■
Where acidic or alkaline vapour is present.
B
EFORE INSTALLATION
Precautions for R410A
■
The refrigerant requires strict cautions for keeping the system
clean, dry and tight.
-
Clean and dry
Foreign materials (including mineral oils or moisture) should be
prevented from getting mixed into the system.
-
Tight
Read "Precautions on refrigerant piping" on page 5 carefully and
follow these procedures correctly.
■
Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state. (If the refrigerant
is in state of gas, its composition changes and the system will
not work properly).
■
The connected indoor units must be indoor units designed
exclusively for R410A.
Installation
■
For installation of the indoor unit, refer to the installation manual
of the indoor unit.
■
Illustrations show a class 125 outdoor unit type. Other types also
follow this installation manual.
■
Never operate the unit without the thermistor (R3T), burning of
the compressor may result.
■
Be sure to confirm the model name and the serial no. of the
outer (front) plates when attaching/detaching the plates to avoid
mistakes.
■
When closing the service panels, take care that the tightening
torque does not exceed 4.1 N•m.
Accessories
Check if the following accessories are included with the unit
Handling
As shown in the figure, bring the unit slowly by grabbing the left and
right grips.
Place your hands on the corner instead of holding the suction inlet in
the side of the casing, otherwise the casing could be deformed.
Since design pressure is 4.15 MPa or 41.5 bar, pipes of
larger wall thickness may be required. Refer to
"Selection
of piping material" on page 4
Fluorinated greenhouse gases
label
1
Multilingual fluorinated
greenhouse gases label
1
NOTE Take care not to let hands or objects come in contact with
rear fins.