LG PDI Premium PQNUD1S40 Manual Del Propietario Y De Instalación página 8

INSTALLATION METHOD
8
INSTALLATION METHOD
Diagram of overall product configuration
When interlocked to pulse type wattmeter
• When interlocked to EHP product
- Independent Operation of Power Indicator (interlocked to EHP products)
Wattmeter
Power In
single phase
220-240 V~,
50/60 Hz
Power cable for 3 phase 4 wire
Power cable for single phase
Communication cable (2 wire shielded cable): Between outdoor unit and central controller
Communication cable (2 wire shielded cable): Between indoor unit and outdoor unit
Pulse signal wire
Refrigerant pipe
CAUTION
!
• Depending on the electric power, use the wattmeter for remote reading by sending the
pulse signal.
• Use the wattmeter with the pulse width of 50 - 400 ms.
• The wattmeter pulse must be able to sink at least 3 mA or more of current in the power
indicator.
• Use the wattmeter of 1 W/pulse, 2 W/pulse, 4 W/pulse, 6 W/pulse, 8 W/pulse, 10 W/pulse,
100 W/pulse and PT/CT (1-50 000).
• When setting the wattmeter, set it to Master Mode.
• Maximum of 8 wattmeters can be installed.
• The distance between power indicator and wattmeter should be shorter than 50 m in
normal circumstance.
• When electrical or mechanical noise is expected, more shorter wiring is needed.
• For watt-hour meter setting, inquire to the corresponding vendor.
h EHP (Electric Heat Pump): It is an electric air conditioner to drive the compressor by electric power.
POWER WHM
Pulse signal
MENU
SELECT
PQNUD1S40
ODU WHM CHECK
(00) (01) (02)
(70) (71) (72)
Wattmeter
RS485
(LGAP)
Pulse signal
Pulse signal
(03)
(73)
Power In 3
phase 4 wire
380-415 V 3N~,
50/60 Hz