A6 duct uses two wires without polarity connection way, which almost has no mistake during the
installation.
2.3.4.5. Easy Clean
With a larger window design, once the motor and the blower wheels have been detached, heat
exchanger and water receiver tray in behind can be seen very clearly. Dust can be easily removed
from the inside by vacuum
2.3.4.6. Fresh air intake function(Optional)
Install one duct from the reserved fresh-air intake to outdoor.
Continually inhale the fresh air to improve the quality of the indoor air, fulfills air quality more
healthy and comfortable.
A ventilation motor (provided by the installer) can be installed inside the fresh air duct to improve
the fresh air volume. There are reserved ports for this motor on main PCB (Standard for 3D
inverter units, and only optional for DC inverter 53~160 units).
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