Carrier 42CN, Инструкции по установке, эксплуатации и обслуживанию, Страница: 6 / 15

—
4
—
Electrical connections
IMPORTANT:
DO NOT connect units of two or more different models into one switch. Verify the
switch capacity before proceeding connections of multiple same model units into
one switch.

Make earth connection prior to any other electrical connections.

Disconnect the power supply to all circuits prior to handling any electrical components.

Before proceeding with the unit connection to the mains supply locate live (L) and neutral
(N). Follow the diagram (Fig 3) in the wiring box when connect the wiring.
（
Fig 2
） （
Fig 3
）

Follow wiring diagrams and comply with the national and local standards (Fig 8 for single
motor unit, Fig 9 for dual motor unit).

Ensure the jumper is set correctly, before running the unit. Jumper DIP1&DIP2 following
setting table 1&3 for single motor and setting table 1&4 for dual motor.

For unit with electric heater, the heater’s power supply should be connected individually;
directly connection with the power leads L&N should be forbidden.

Connect communication line to terminal block V, G, A, B, according to the wiring diagram.
Connect hydraulic valve control line to 1&2 for two pipes or to 1~4 for four pipes.

Before power supply, ensure that unit installation OK, water valve connection right, fan
no jammed, fan duct no blocked, power supply cable OK, no things cover the electric
heater. Eliminate all risk factors.

Voltage at the unit operation must be 220V
±
10%, frequency 50
Hz±1Hz
.Check power
input before operation to avoid damage to motor.

Ensure that the mains supply connection is made through a switch that disconnects all
poles, with contact gap of a least 3 mm.

After the unit installation, do the protections to make sure the control box waterproof,
dustproof and anti-static and check the ground connection is correct.

For the unit power supply, it is recommended to use cables with a minimum size of
1.5mm2.

After making all electrical connections the cover panel of the control box should be fixed.
Jumper
According to service condition, user jump drive board DIP1&DIP2 under power-down,
DIP3 doesn’t need to set for normal driver board.
1. DIP1
setting
DIP1-1, DIP1-2, DIP1-3 have been set as the unit type in the factory; any change in the
field application should follow Table 1 for reset. DIP1-6, DIP1-7, DIP1-8 is used for setting