Construction
2) Embedded in the ceiling high static pressure type and air processing unit with direct expansion coil.
a) Bus cable 10m respectively
b) Bus cabling 15m respectively
● The value within ( ) for the minimum cable size is the maximum
length (m).
● If the power to one indoor unit is not switched on, then other indoor units
will sound a warning. Therefore, indoor units should take the power from
one location that is separate from the outdoor units.
● When the indoor unit power supply is from a bus system, the power
cabling system should be grouped according to the refrigerant piping
system.
● The number of indoor units in one power supply system is limited by the
capacity of the cabling.
● Please note that the terminal board capacity and the maximum cable size
that can be connected are as shown in the table below.
3. Points regarding electrical construction (indoor unit)
E - 11
Indoor unit
Indoor unit
Earth leakage
breaker
Main cable
Bus cable