Service Manual

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5. Electrical wiring diagrams
LGH-F300RVX2-E, LGH-F380RVX2-E, LGH-F470RVX2-E, LGH-F600RVX2-E
* Wiring for TM1, TM2, TM3, TM4, and TB5 shown in dotted lines are field work.
* Be sure to connect the earth wire.
* An all pole electric leakage isolator must be installed.
* Always use an isolator for the main power connection.
9
10
S
A
B
1
2
1
2
NL
NL
CN12
CN119
CN114
CN10
CN9
LED6
TAB1 TAB2
TM1
Power supply terminal
SW5
SW6
SW2
TM2
TB5
TM4
TM3
PZ-62DR-EA
LED3
LED2
LED1
Y
Z
Supply fan motor
Exhaust fan motor
Monitor output
12 V or 24 V DC
Mr. Slim (non-polar)
Volt-free contact
M-NET transmission cable
2nd remote controller
(Max. 2 controllers)
2nd Lossnay unit
(Max. 15 units)
Isolator (Field supply)
POWER SUPPLY
208–230 V/60 Hz
LINE FILTER
Shielded Wire
X11
Power circuit boardControl circuit board
CN113
REACTOR
M
1
M
2
GM
LED4
CN19
CN14
CN35 CN5 CN7CN34
SW12 SW11
LINE FILTER
Lossnay unit
LED5
CN23
LINE FILTER
(For LGH-F300RVX2-E,
LGH-F380RVX2-E)
TH1
(OA)
TH2
(RA)
CN32
CN105
CN50 CN26 CN17
Definition of symbols
M1: Motor for exhaust fan
M2: Motor for supply fan
GM: Motor for Bypass damper
TH1: Thermistor for outdoor air
TH2: Thermistor for return air
SW2, 5: Switch (Function selection)
SW6: Switch (Model selection)
TM1: Terminal block (Power supply)
TM2: Terminal block (External control input)
TM3: Terminal block (Monitor output)
TM4:
Terminal block (Remote controller transmission cable)
TB5: Terminal block (M-NET transmission cable)
TAB1, TAB2: Connector (Power supply)
X11: Relay contact
CN5: Connector (Thermistor RA)
CN7: Connector (Thermistor OA)
CN9: Connector (Fan motor)
CN10: Connector (Fan motor)
CN12: Connector (Damper motor)
CN17: Connector (Fan speed 1/2/3/4)
CN14: Connector
CN113: Connector
CN114: Connector
CN19: Connector
CN119: Connector
CN23: Connector (CO2 sensor power supply)
CN26: Connector (Bypass switching/CO2 sensor input)
CN32: Connector (Remote control selection)
CN34: Connector (CO2 sensor output)
CN35: Connector (CO2 sensor input)
CN50: Connector (Optional components: External
monitor output)
CN105: Connector (For IT communication)
SW11: Address setting rotary switch (ones digit)
SW12: Address setting rotary switch (tens digit)
LED1: Inspection indicator lamp
LED2: M-NET indicator lamp
LED3:
Remote controller power supply indicator lamp
LED4, LED6: Power supply indicator lamp
LED5: CO2 sensor power supply indicator lamp
(When the CO
2 sensor is connected)
SYMBOL : Terminal block, : Connector on PCB
Select proper isolator according to the electrical current information in the chart below.
Model LGH-F300RVX2-E LGH-F380RVX2-E LGH-F470RVX2-E LGH-F600RVX2-E
Maximum current when operating [A] 3.40 3.10 4.05 4.15
Inrush current after power
supply ON [A]
10 ms 6.1
100 ms 3.6