Electrical Wiring - Carrier XCT7 Installations- Und Benutzerhandbuch

Electrical Wiring

• Electrical construction should be made with specific mains circuit by the qualified personnel according to the instal-
lation instruction. Electric shock and fire maybe caused if the capacity of power supply is not sufficient.
• While arranging the wiring layout, specified cables should be used as the mains line, according to the local
regulations on wiring. Connecting and fastening should be performed reliably to avoid the external force of cables
from transmitting to the terminals. Improper connection or could be hazardous.
• Grounding must be appropriate. . Unreliable earthing may cause electrical shocks. Do not connect the grounding
line to the gas pipe, water pipe, lightening rod and telephone line.
• Only copper wire can be used. Breaker for electric leakage should be provided, or electric shock may occur.
• The wiring of the mains line is of Y type. The power plug L should be connected to the live wire and plug N con-
nected to null wire according EN 60364. For the type with auxiliary electrically heating function, the live wire and
the null wire should not be misconnected, or the surface of electrical heating body will be electrified. If the power
line is damaged, report to the manufacturer or service center.
• The power line of indoor units should be arranged according to the installation instruction of indoor units.
• The electrical wiring should not be in contact with the high-temperature sections of tubing as to avoid melting the
insulating layer of cables, which may cause accidents.
• After connected to the terminal tier, the tubing should be curved into be a U-type elbow and fastened with the
pressing clip.
• Controller wiring and refrigerant tubing can be arranged and fixed together.
• The machine must not be turned on before electrical operation. Maintenance should be done while the power is
off.
• Seal the thread hole with heat insulating materials to avoid condensation.
• Signal line and power line are separately independent, and can't share one line. [Note: the power line, signal line
are provided by users. Parameters for power lines are shown as below: 3x(1.0-1.5) mm2; parameters for signal
line: 2x(0.75-1.25)mm2( shielded line)]
• 5 butt lines (1.5mm) are provided in the machine before delivery, which are used in connection between the valve
box and the electrical system of the machine. The detailed connection is displayed in the circuit diagram.
Supply Wiring Drawing
Main Unit of Outdoor
Unit
Breaker for
Electricity Leakage
Overflow Breaker
Indoor Unit 1 wall mounted type
• Indoor units and outdoor units should be connected to the power source separately. Indoor units must share one
single electrical source, but its capacity and specifications should be calculated. Indoor & outdoor units should be
equipped with the power leakage breaker and the overflow breaker.
WARNING
ATTENTION
Sub Unit 1 of Outdoor
Unit
Breaker for
Electricity Leakage
Overflow Breaker
Indoor Unit 2 wall mounted type
Breaker for
Electricity Leakage
Overflow Breaker
14
Sub Unit 2 of Outdoor
Unit
Breaker for
Electricity Leakage
Overflow Breaker
Indoor Unit 2
except wall mounted type
Breaker for
Electricity Leakage
Overflow Breaker
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Breaker for
Electricity Leakage
Overflow Breaker