Filed Wiring - Midea LRSJF-V120 Technical Manual

5 Filed wiring

CAUTION:
 Please select power source for indoor unit and outdoor unit respectively.
 The power supply has specified branch circuit with leakage protector and manual switch.
 For LRSJF-V120/SN1-610 and LRSJF-V140/SN1-610，indoor unit and outdoor unit both
connect with power supply which is 380-415V 50Hz.
 Use 3-core screened wire as indoor and outdoor control wire.
 The installation should comply with relevant national electric standard.
 Power wiring should be engaged by specialized electrician
5.1 Outdoor unit wiring
■ Field wiring guidelines
 Most field wiring on the indoor unit side is to be made on the terminal block inside the control
box. To gain access to the terminal block, remove the indoor unit cover and control box
service panel.
 Cable tie mountings are provided at the bottom of the control box. Fix all cables using cable
ties (field supply).
 A dedicated power circuit is required for the auxiliary heater.
 Installations equipped with a sanitary hot water tank (optional), require a dedicated power
circuit for the electric heater. Please refer to the sanitary hot water installation manual.
1) The Specification of Power
Model
Outdoor Unit Power
Circuit Breaker (A)
Indoor unit/Outdoor unit Signal wire (mm2) (Weak
electric signal)
Caution:
 Equipment complying with IEC 61000-3-12.
 A disconnection device having an air gap contact separation in all active conductors should be
incorporated in the fixed wiring according to the National Wiring Regulation.
2) Outdoor unit wiring diagram
Phase
Voltage and Frequency
Power Wiring (mm2)
LRSJF-V120/SN1-610
LRSJF-V140/SN1-610
3 Phase
380-415V~ 50Hz
5X2.5
25
3-core shielded wire
3 X 0.5