Electrical Connection - Carrier 42VQV050 Installation Manual

42VQV
Electrical connections
Jumper positioning (J18):
Units are equipped with a jumper inside the electric control box, to
make them suitable for the two installation typologies:
Wall vertical installation: jumper inserted.
Ceiling horizontal installation: jumper removed.
To reset incorrect jumper positioning, proceed as follows:
• Disconnect the power supply.
• Reposition the jumper correctly.
• Connect the power supply.
IMPORTANT:
• Make refrigerant connections before electrical
connections.
When disconnecting, disconnect electrical connections before
refrigerant connections.
Connection of the system to the mains power supply is to be
carried out in compliance with the wiring diagram shown in the
installation instructions of the external section.
• Make electrical connections between units prior to proceeding to
mains supply unit connection.
• Before proceeding with the unit connection to the mains supply
locate live L and neutral N, then make connections as shown in
the wiring diagram.
• Ensure that mains supply connection is made through a switch
that disconnects all poles, with contact gap of a least 3 mm.
• The indoor - outdoor unit connecting wires must be A07 RN-F
type (245 IEC 57) or higher, with synthetic rubber insulation with
Neoprene coating, according to EN 60335-2-40.
• Ground connection between indoor and outdoor unit is made via
the refrigerant pipes.
• With the cable clamp supplied, secure the connecting cable
between the two units.
• Fasten the electric connecting wires with refrigerant tubes
together.
Allow an additional length to the electric wires for easy
connection to the unit connectors.
Notes:
• For sizing of power supply wires and delay type fuses, refer
to the outdoor unit installation instructions.
• All field electrical connections are the responsibility of the
installer.
IMPORTANT:
The units are provided with electronic control.
A time-delay device provides a 3 minute starting delay of the
compressor every time the unit is stopped or when it is initially
switched on.
Control and safety devices
The following control and safety devices are built into the
indoor units (see wiring diagrams):
• Room air thermostat adjustable from 18°C to 32°C.
• Motor with overheat/overcurrent protection.
E N G L I S H
GB - 9