Carrier XCT 7 40VD H-7S Series - Electrical Wiring

Electrical Wiring
• Electrical connections should be made with specic main circuits by the qualied personnel according to the
installation instruction. Electric shock and re may be caused if the capacity of power supply is not su󰀩cient.
• While arranging the wiring layout, specied 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 re accidents.
• Ground connection should match specications. 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 electried.
• 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 xed 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
2
parameters for signal line:
2×(0.75-1.25)mm
2
( shielded line)].
• 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.
• Indoor and outdoor units should be connected to the power source separately. Indoor units can share one single
electrical source, but their capacity and specications should be calculated Indoor and outdoor units should be
equipped with power leakage and overow breakers.
Warning
Attention
Main Unit of Outdoor
Unit
Indoor Unit 1 wall mounted type Indoor Unit 2 wall mounted type
Indoor Unit 2
except wall mounted type
Sub Unit 1 of Outdoor
Unit
Sub Unit 2 of Outdoor
Unit
Breaker for
Electricity Leakage
Overow Breaker
Breaker for
Electricity Leakage
Overow Breaker
Supply:3N~,38O-4OOV,5O/6OHz
Supply:1PH,22O-24OV~,5O/6OHz
Supply:3N~,38O-4OOV,5O/6OHz
Supply:1PH,22O-24OV~,5O/6OHz
Supply:3N~,38O-4OOV,5O/6OHz
Supply:1PH,22O-24OV~,5O/6OHz
G
G G
Breaker for
Electricity Leakage
Overow Breaker
Breaker for
Electricity Leakage
Overow Breaker
Breaker for
Electricity Leakage
Overow Breaker
Breaker for
Electricity Leakage
Overow Breaker
Supply Wiring Drawing
16
ENGLISH