Installation method (continued)
Wire connection diagram ----- Models LGH-250RVXT-E
* TM1, TM2, TM3, TM4, TB5 shown in dotted lines are field work.
* Be sure to connect the ground wire.
* A power supply isolator must be installed.
* Always use an isolator for the main switch power connection.
* Select proper circuit breaker according to the electrical current information in the chart below.
Model
Maximum current when operating [A]
Inrush current after power
10 ms
supply ON [A]
100 ms
M
4
EXHAUST
FAN MOTOR
(Outside)
M
2
SUPPLY
FAN MOTOR
(Inside)
M
1
SUPPLY
FAN MOTOR
(Outside)
GM
GM
M1:
Motor for supply fan (outside)
M2:
Motor for supply fan (inside)
M3:
Motor for exhaust fan (inside)
M4:
Motor for exhaust fan (outside)
GM:
Motor for By-pass damper
TH1:
Thermistor for outside air
TH2:
Thermistor for return air
SW2, 5: Switch (Function selection)
TM1:
Terminal block (Power supply)
TM2:
Terminal block (External control input)
TM3:
Terminal block (Monitor output)
TM4:
Terminal block (Transmission cable)
TB5:
Terminal block (M-NET Transmission cable)
Eng-8
LGH-250RVXT-E
10.8
21.8
11.9
Top Right Printed
Circuit Board
M
(EA Inside)
3
CN9
LED6
EXHAUST
FAN MOTOR
CN118
(Inside)
TAB2 TAB1
TAB5
LED6
CN121
CN9
Top Left Printed
Circuit Board
(EA Outside)
TAB2
TAB1
LED6
CN10
Bottom Right
Printed Circuit
Board
(SA Inside)
CN121
TAB1
TAB2
LED6
CN121
CN10
Bottom Left Printed
Circuit Board
(SA Outside)
TAB1
CN7
TAB2
TAB1, TAB2, TAB5: Connector (Power supply)
TAB3, TAB4: Connector (Reactor)
X13:
Relay contact
X14:
Relay contact
X15:
Relay contact
CN5:
Connector (Thermistor RA)
CN7:
Connector (Motor for By-pass damper)
CN9:
Connector (Fan motor)
CN10: Connector (Fan motor)
CN17: Connector (Fan speed 1/2/3/4)
CN18: Connector
CN118: Connector
CN19: Connector
(*1)
MAX 240 VAC 1 A MIN 220 VAC 100 mA
Bypass monitor or Pre-
heater signal output (*1)
Malfunction monitor
output (*1)
CN119
Operation monitor
output (*1)
COM
PZ-
61DR-E
2nd remote controller
(Max. 2 controllers)
2nd Lossnay unit
(Max. 15 units)
M-NET-
transmission cable
Shielded Wire
12V or
Volt-free
24VDC
contact
Mr .Slim
(non-polar)
REACTOR
LINE
FILTER
REACTOR
Definition of symbols
24 VDC 1 A
5 VDC
100 mA
TM3
7
CN20(GR)
8
CN26(WH)
9
CN32(WH)
10
X15
X14
X13
CN17(RE)
1
TM4
LED3
2
CN17 (Red)
Printed Circuit
A
Board for Control
B
TB5
LED4
S
LED2
LED1
TM2
1
2
SW2
3
SA1
SA2
SW5
CN21
CN19
CN18
CN5
CN22
TH1(OA)
TH2(RA)
Isolator
(Field supply)
L
L
N
N
POWER SUPPLY
PE
TM1
CN119: Connector
CN20: Unused
CN21: Connector
CN121: Connector
CN22: Connector (Thermistor OA)
CN26: Connector (By-pass, 0 - 10 VDC Fan speed control)
CN32: Connector (Remote control selection)
SA1:
Address setting rotary switch (tens digit)
SA2:
Address setting rotary switch (ones digit)
LED1 to LED3: Inspection indicator lamp
LED4, LED6: Power supply indicator lamp
SYMBOL
: Terminal block
: Connector on PCB