Introduction; Combination - Daikin ERQ Service Manual

■
Make certain that all electrical work is carried out by qualified
personnel according to the local laws and regulations and this
installation manual, using a separate circuit.
Insufficient capacity of the power supply circuit or improper
electrical construction may lead to electric shocks or fire.
■
Make sure that all wiring is secure, using the specified wires and
ensuring that external forces do not act on the terminal
connections or wires.
Incomplete connection or fixing may cause a fire.
■ When wiring between the air handling units and control box, and
wiring the power supply, form the wires so that the frontside
panel can be securely fastened.
If the frontside panel is not in place, overheat of the terminals,
electric shocks or a fire may be caused.
■ If refrigerant gas leaks during installation work, ventilate the area
immediately.
Toxic gas may be produced if refrigerant gas comes into contact
with fire.
■
After completing the installation work, check to make sure that
there is no leakage of refrigerant gas.
Toxic gas may be produced if refrigerant gas leaks into the room
and comes into contact with a source of fire, such as a fan
heater, stove or cooker.
■
Before touching electric terminal parts, turn off power switch.
Caution
■
Ground the air conditioner.
Grounding resistance should
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 or 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
furniture get wet.
■ Install the air handling 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 rinse the outdoor unit.
This may cause electric shocks or fire.
■
Do not install the air conditioner in places such as the following:
■ Where there is mist of mineral oil, oil spray or vapour 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.
Installation manual
122
be according to national
■ 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.
■ Do not touch any refrigerant which has leaked out of refrigerant
piping connections.
This may result in frostbite.
■ Do NOT connect the system to DIII-net devices:
This could result in malfunction or breakdown of the total
system.
2. I
NTRODUCTION
2.1.

Combination

The air handling units can be installed in the following range.
■ Always use appropriate air handling units compatible with
R410A.
To learn which models of air handling units are compatible with
R410A, refer to the product catalogs.
■
The manufacturer of this outdoor unit has limited responsibility
for total capacity of the system because performance is
determined by the total system. The discharge air may fluctuate
depending on selected air handling unit and depending on the
installation configuration.
■
Both air handling unit and digital controller software and
hardware are field supply and are to be selected by the installer.
Refer to the manual "Option kit for combination of Daikin
condensing units with field supplied evaporators" for more
details.
Recommended temperature setting on the field supplied
controller is between 16°C and 25°C.
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ERQ100~140A7V1B
Inverter condensing unit
4PW51321-1