Electrical Wiring - Carrier XCT7 Installations- Und Bedienungsanleitung

Electrical Wiring

• Electrical connections should be made with specific main circuits by the qualified personnel
according to the installation instruction. Electric shock and fire may be caused if the capacity of
power supply is not sufficient.
• While arranging the wiring layout, specified cables should be used as the main line, which
conforms to the local regulations on wiring. Connecting and fastening should be performed reliably
to avoid the external force of the cables from transmitting to the terminals. Improper connection or
fastening may lead to burning or fire accidents.
• Ground connection should match specifications. Unreliable grounding may cause electrical shocks.
Do not connect the grounding line to the gas pipe, water pipe, lightening rod, or telephone line.
• Only copper wires can be used. Breaker for electric leakage must be provided or electric shock
may occur.
• The wiring of the main line is of Y type. The L terminal should be connected to the live wire and
N terminal should be connected to the null wire and the ground terminal should while should be
connected to the ground wire. For the type with auxiliary electrical heating function, the live wire
and the null wire should not be misconnected, or the surface of the electrical heating body will be
electrified.
• If the power line is damaged, professional personnel from the manufacturer or the service centre
should replace it.
• The power line of indoor units should be arranged according to the installation instruction for indoor
units.
• The electrical wiring should be away from high-temperature sections of tubing so as to avoid the
melting of the insulating layer of the cables, which may cause accidents.
• After connecting 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.
• Maintenance should be done while the power is shut down.
• Seal the thread hole with heat insulating materials to avoid condensation.
• The signal and power lines are independent and cannot share one line. [Note: the power and
signal lines are provided by users. Parameters for power lines are shown as below: 3×(1.0-1.5)mm
parameters for signal line: 2×(0.75-1.25)mm
• The machine is equipped with 5 butt lines (1.5mm) before delivery, which are used for connections
between the valve box and the electrical system of the machine. A detailed diagram of the
connection is displayed in the circuit diagram.
• The machine must be connected to the ground according to EN 60364.
Periodically check and ensure to tighten the pressure lugs.
Supply Wiring Drawing
• Indoor and outdoor units should be connected to the power source separately. Indoor units can
share one single electrical source, but their capacity and specifications should be calculated
Indoor and outdoor units should be equipped with power leakage and overflow breakers.
Warning
Attention
( shielded line)].
2
Sub Unit 1 of Outdoor
Main Unit of Outdoor
Unit
Unit
G
Breaker for Breaker for
Electricity Leakage Electricity Leakage
Overflow Breaker Overflow Breaker
Supply:3N~,38O-4OOV,5O/6OHz Supply:3N~,38O-4OOV,5O/6OHz
Indoor Unit 1 wall mounted type Indoor Unit 2 wall mounted type
Breaker for
Electricity Leakage
Overflow Breaker
Supply:1PH,22O-24OV~,5O/6OHz Supply:1PH,22O-24OV~,5O/6OHz
16
Sub Unit 2 of Outdoor
Unit
G G
Breaker for
Electricity Leakage
Overflow Breaker
Supply:3N~,38O-4OOV,5O/6OHz
Indoor Unit 2
except wall mounted type
Breaker for
Breaker for
Electricity Leakage
Electricity Leakage
Overflow Breaker
Overflow Breaker
Supply:1PH,22O-24OV~,5O/6OHz
2