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Unit installation
SPLIT RACK AIR CONDITIONER USER MANUAL
UM.ICUBE2.0-SRAC.SG.0822 August 2022 www.eaton.com
Figure 2.23
After the power line of the unit is connected to the tube terminal, it can be directly inserted into the circular hole
of the power terminal.
The method of disconnecting the power terminal is as follows:
Figure 2.24
Step 1: Use a small screwdriver to press down the yellow part of the terminal.
Step 2: Press down the yellow part of the terminal until the black power cord is loose, then pull out the power cord.
Selection of circuit breaker
The most important point of unit wiring is the selection of circuit breaker. The circuit breaker, also known as the
air switch, is mainly used to turn on and break the circuit infrequently under normal conditions, and to break the
circuit when overload or short circuit occurs in the circuit.
The selection principles for installing circuit breakers in air conditioners are as follows:
1. Generally choose plastic shell type circuit breaker.
2. The rated voltage of the circuit breaker is not lower than the rated voltage of the circuit; the rated current of
the circuit breaker is not lower than the calculated current passing through it.
3. The circuit breakers of air conditioners should be installed separately and should not be shared.
Selection of power supply wire
1. When passing through the calculated current, the heating temperature of the wire should not exceed the
allowable maximum temperature, and the voltage loss caused by it should not exceed the normal allowable
loss value.
2. The conductor section is selected according to the prescribed economic current density in order to save
non-ferrous met- als and reduce power loss, and at the same time to meet the requirements of mechanical
strength.
3. The insulation level of the wire must meet the requirements of normal working voltage.
4. Recommended cable table for indoor units is as follows:
