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INSTALLATION METHOD
Diagram of overall product configuration
When interlocked to pulse type wattmeter
• Interlocked Operation with Central Controller (interlocked to EHP product)
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 ms ~ 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, PT/CT(1 ~ 50 000).
• When setting the wattmeter, set it to Slave Mode.
• Maximum of 2 wattmeters can be installed.
• The distance between power indicator and wattmeter should be shorter than 10 m in
normal circumstance.
• When electrical or mechanical noise is expected, more shorter wiring is needed.
h EHP (Electric Heat Pump): It is an electric air conditioner to drive the compressor by electric power.
POWER
WHM
MENU
SELECT
PPWRDB000
ODU
WHM CHECK
(00)
(01)
(02)
(10)
(11)
(12)
INSTALLATION METHOD
Pulse signal
Wattmeter
Pulse signal
RS-485
(03)
RS-485
(13)
(LGAP)
11
Power In 3
phase 4 wire
380-415 V 3N~,
50/60 Hz
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