Mitsubishi Electric LOSSNAY PZ-25RF8-E User manual

Warning:
Repair work must be performed by the manufacturer, its service
agent or a similarly qualified person in order to avoid hazards.
LOSSNAY
HANDBOOK
February 2019 No. U155-F
MODELS
LGH-15RX5-E
LGH-25RX5-E
LGH-35RX5-E
LGH-50RX5-E
LGH-65RX5-E
LGH-80RX5-E
LGH-100RX5-E
LGH-150RX5-E
LGH-200RX5-E
Nameplate
Nameplate
Remote controller (Optional)
PZ-60DR-E
Filter (Optional)
PZ-25RF8-E PZ-35RF8-E
PZ-50RF8-E PZ-65RF8-E
PZ-80RF8-E PZ-100RF8-E

Contents
1. Safety precautions....................................................................3
2. Specifications ....................................................................... 4-8
3. Outside dimensions............................................................ 9-18
4. Electrical wiring diagrams ................................................ 19-20
5. Basic circuit diagram ............................................................. 21
6. Fundamentals of operation .............................................. 22-44
7. Troubleshooting ............................................................... 45-65
8. Disassembly and assembly.............................................. 66-68
9. Parts catalog .................................................................. 69-123
LGH-15RX5-E ............................................................... 70-75
LGH-25RX5-E ............................................................... 76-81
LGH-35RX5-E ............................................................... 82-87
LGH-50RX5-E ............................................................... 88-93
LGH-65RX5-E ............................................................... 94-99
LGH-80RX5-E ........................................................... 100-105
LGH-100RX5-E .......................................................... 106-111
LGH-150RX5-E .......................................................... 112-117
LGH-200RX5-E.......................................................... 118-123

♦♦
Turn off the power supply
Be sure to shut off the power supply isolator
before disassembling the unit for repair.
(Failure to heed this warning may result in elec-
tric shock.)
♦♦
Use proper parts and tools
For repair, be sure to use the parts listed in the service
parts list of the applicable unit model and
use the proper tools.
(Failure to heed this warning may result in elec-
tric shock, fire and/or bodily injury.)
♦♦
Proper electric work
Use the electric wires designated for electric work, and
conduct electric work in accordance with the "Electric
Installation Engineering Standard," the "Indoor Wiring
Regulations," and the Installation Work
Guide.
(Incomplete connection or wiring installation may
result in electric shock and/or fire.)
♦♦
Replace damaged and/or degraded parts
Be sure to replace the power-supply cord and lead wire
in the event that they are damaged and/or
degraded.
(Failure to heed this warning may result in elec-
tric shock and/or fire.)
♦♦
Check insulation
Be sure to measure the insulation resistance once the
repair work is complete, and turn on the power supply
after verifying that an insulation resistance
of at least 10MΩ is obtained.
(If an insulation problem exists, it may result in
electric shock.)
Be sure to follow
this instruction.
Be sure to follow
this instruction.
Be sure to follow
this instruction.
Be sure to follow
this instruction.
Be sure to follow
this instruction.
♦♦
Electric shock
If you must inspect the circuitry while the
power is on, do not touch the live parts.
(Failure to heed this warning may result in elec-
tric shock.)
Caution for
electric shock
♦♦
Modification is prohibited
Do not modify the unit.
(Failure to heed this warning may result in elec-
tric shock, fire and/or bodily injury.)
Prohibited
Incorrect handling of the product may result in serious injury
or death.
Warning
♦♦
Caution for bodily injury
Do not conduct any work at a location
where you do not have a sure footing.
(Failure to heed this caution may result in a fall.)
Prohibited
Be sure to follow
this instruction.
♦♦
Wear gloves
Wear gloves when conducting work.
(Failure to heed this caution may result in injury
to your hands from sharp metal or other edges.)
•Inspect the grounding, and repair it if incomplete. Make sure that a power supply isolator is being installed, if
not, install one.
GMake sure that the product operates correctly upon completion of repair. Clean the product as well as the sur-
rounding area, and then notify the customer of the completion of repair.
Incorrect handling of the product may result in serious injury
or damage to properties including buildings and equipment.
Caution
Request during repair
—3—
1. Safety precautions
GPlease be sure to read the following safety precautions thoroughly before commencing with the maintenance
work, and conduct the inspection and repair of the product in a safe manner.
GThe types and levels of danger that may arise if the product is handled incorrectly are described by using the
warning symbols shown below.

—4—
2. Specifications

—5—

—6—

—7—

—8—

Unit (mm)
LGH-15RX5-E
3. Outside dimensions
—9—

Unit (mm)
LGH-25RX5-E
—10—

Unit (mm)
LGH-35RX5-E
—11—

—12—
Unit (mm)
LGH-50RX5-E

Unit (mm)
LGH-65RX5-E
—13—

—14—
Unit (mm)
LGH-80RX5-E

Unit (mm)
LGH-100RX5-E
—15—

—16—
Unit (mm)
LGH-150RX5-E

Unit (mm)
LGH-200RX5-E
—17—

—18—
Unit (mm)
PZ-60DR-E
Unit (mm)
PZ-25RF8-E, PZ-35RF8-E, PZ-50RF8-E, PZ-65RF8-E, PZ-80RF8-E, PZ-100RF8-E

—19—
POWER SUPPLY
220-240V 50Hz
2
1
TB5 (M-NET)
(*1)
Optional Remote controller
ABS
(PZ-60DR-E)
*When the optional Remote Controller PZ-60DR-E
cable
(non-polar)
24VDC 2A 5VDC 100mA
MAX 240VAC 2A MIN 220VAC 100mA
LL
N
N
M1
M2
PE
monitor output
Operation or Delay1
LS
TR
TM1
CN1
CN2
CN7
BLUE
BROWN
YELLOW
RED
BROWN
RED
BLUE
BLUE
EXHAUST
FAN MOTOR
SUPPLY
FAN MOTOR
WHITE
ORANGE
YELLOW
GREY
BLACK
C
C
SA2
SA1
SW2
SW5
SW1
CN6 ORANGE
ORANGE
TH1 (OA)
TH2 (RA)
ORANGE
ORANGE
ORANGE
ORANGE
TM2
BROWN
PZ-
60DR-E
Transmission
TB5
TM3
TAB3 TAB5
CN10
CN9
TAB1
TAB2
Isolator
X12 X11
CN32
X10
S
BA
9
2
1
CN5
321678
10
CN16
TM4
RED
BROWN
output 7 , 8
Malfunction monitor
monitor output 6 , 7
By-pass or Delay2
MAX 240VAC 1A
12V or 24V DC
Mr.Slim
(non-polar)
2nd remote controller (Max. two remote controllers installable)
2nd LOSSNAY unit (Up to max 15 units)
MELANS
cable
transmission
M-NET
Shield Wire
24VDC 1A
MAX 240VAC 1A
5VDC
100mA
MIN 220VAC 100mA
Unchanged a-contact
13
External control input
TM4
(Max. two remote controllers
2nd remote controller
Shield Wire
cable
transmission
M-NET
2nd or later main units
installable)
(*1)PZ-41SLB-E and PZ-52SF-E cannot
be used when using PZ-60DR-E.
is used as the M-NET System, connect it to
of TM4 terminal block, and connect M-NET
transmission wire to , on TB5 terminal
block.
1
2
AB
GM
(*1)
With this product, the wiring installation method will
vary according to the design of the system.
Perform electrical installation to meet local electrical regulations.
.Always use double insulated PVC cable for the transmission cables.
.Wiring work must be performed by qualified professionals.
.All supply circuits must be disconnected before obtaining access to the terminal devices.
NOTE 1.TM1, TM2, TM3, TM4, TB5 shown
in dotted lines are field work.
2.Isolator should be provided by the customer.
3.Be sure to connect the grounding wire.
*Attention
CN16
(Unchanged a-contact)
HI
LO
EXTRA-LO
BY-PASS
BROWN
RED
ORANGE
YELLOW
GREEN
AB
CN10
M2
SUPPLY
FAN MOTOR
A: LGH-15 and 25RX5-E, and
LGH-35 to 100RX5-E with the motor
produced from February 2014
B: LGH-35 to 100RX5-E with the motor
produced until January 2014
4. Electrical wiring diagrams
LGH-15RX5-E, LGH-25RX5-E, LGH-35RX5-E, LGH-50RX5-E, LGH-65RX5-E, LGH-80RX5-E, LGH-100RX5-E
Definition of Symbols
M1: Motor for exhaust fan CN1: Connector (Transformer primary)
M2: Motor for supply fan CN2: Connector (Transformer secondary)
C: Capacitor CN5: Connector (Thermistor)
GM: Motor for By-pass operation CN6: Connector (Microswitch)
LS: Microswitch CN7: Connector (Motor for By-pass operation)
TH1: Thermistor for outside air TAB3: Tab connector(Fan motor)
TH2: Thermistor for return air TAB5: Tab connector (Fan motor)
SW1: Switch (Main/Sub change)CN9: Connector (Fan motor)
SW2, 5: Switch (Function selection)CN10: Connector (Fan motor)
TM1: Terminal block (Power supply)CN16: Connector (High/Low/Extra Low/By-pass switch)
TM2: Terminal block (External control input) CN32: Connector (Remote control selection)
TM3: Terminal block (Monitor output)SA1: Address setting rotary switch (10 digit)
TM4 :
Terminal block (Transmission cable and monitor output) SA2: Address setting rotary switch (1 digit)
TB5 : Terminal block (M-NET Transmission cable)SYMBOL : Indicates terminal block.
TAB1,TAB2 : Connector (Power supply) : Connector.
TR: Control circuit transformer : Board insertion connector or fastening
X10,X11,X12 : Relay contact connector of control board.
*Specifications may be subject to change without notice.

—20—
BLACK
BLACK
LS
LS
BLACK
BLACK
RED
WHITE
TR2
x201
x202
x203
x101
x102
x103
M
M
M
1
2
1
M2
EXHAUST
SUPPLY
EXHAUST
FAN MOTOR
FAN MOTOR
FAN MOTOR
SUPPLY
FAN MOTOR
C
C
C
C
cable
transmission
M-NET
MELANS
(non-polar)
Mr.Slim
output 7 , 8
Malfunction monitor
monitor output 6 , 7
By-pass or Delay2
Shield Wire
12V or 24V DC
BROWN
RED
TM4
CN16
10
876123
CN5
1
2
9
ABS
X10
CN32
X11X12
Isolator
TAB2
TAB1
CN9
CN10
TAB5
TAB3
TM3 TB5
Transmission
cable
60DR-E
PZ-
BROWN
TM2
ORANGE
ORANGE
ORANGE
ORANGE
TH2 (RA)
TH1 (OA) SW1
SW5
SW2
SA1 SA2
BLACK
GREY
YELLOW
ORANGE
WHITE
BLUE
BLUE
RED
BROWN
BROWN
BLUE
CN7
CN2
CN1
TM1
monitor output
Operation or Delay1
PE
NN
L
L
24VDC
2A 5VDC 100mA
MAX 240VAC 2A MIN 220VAC 100mA
(non-polar)
TR1
BROWN
BLACK
GREY
YELLOW
YELLOW
GREY
BLACK
BROWN
WHITE
BLUE
ORANGE
RED
RED
ORANGE
BLUE
WHITE
31
Unchanged a-contact
External control input
A
2nd or later main units
cable
transmission
M-NET S
B
TB5 (M-NET)
Shield Wire
TM4
(PZ-60DR-E)
2nd remote controller
installable)
(*1)
Optional Remote controller
(Max. two remote controllers
PZ-41SLB-E and PZ-52SF-E cannot
be used when using PZ-60DR-E.
(*1)
5VDC 100mA
MIN 220VAC 100mA
24VDC
1A
MAX 240VAC 1A
transmission wire to , on TB5 terminal
B
A
2
1
of TM4 terminal block, and connect M-NET
is used as the M-NET System, connect it to
block.
*When the optional Remote Controller PZ-60DR-E
GM MG
GM MG
x103
x102
x101
x203
x202
x201
2
1
POWER SUPPLY
220-240V 50Hz
CN16
(Unchanged a-contact)
RED
BROWN
YELLOW
ORANGE
GREEN
HI
LO
BY-PASS
With this product, the wiring installation method will
vary according to the design of the system.
Perform electrical installation to meet local electrical regulations.
.Always use double insulated PVC cable for the transmission cables.
.Wiring work must be performed by qualified professionals.
.All supply circuits must be disconnected before obtaining access to the terminal devices.
NOTE 1.TM1, TM2, TM3, TM4, TB5 shown
in dotted lines are field work.
2.Isolator should be provided by the customer.
3.Be sure to connect the grounding wire.
*Attention
2nd remote controller (Max. two remote controllers installable)
2nd LOSSNAY unit (Up to max 15 units)
(*1)
M2
SUPPLY
FAN MOTOR
M2
SUPPLY
FAN MOTOR
AB
AB
A: The motor produced
from February 2014
B: The motor produced
until January 2014
LGH-150RX5-E, LGH-200RX5-E
Definition of Symbols
M1: Motor for exhaust fan X10,X11,X12 : Relay contact
M2: Motor for supply fan
X101,X102,X103: Relay Supply fan speed control
C: Capacitor
X201,X202,X203: Relay Exhaust fan speed control
GM: Motor for By-pass operation CN1: Connector (Transformer primary)
LS: Microswitch CN2: Connector (Transformer secondary)
TH1: Thermistor for outside air CN5: Connector (Thermistor)
TH2: Thermistor for return air CN6: Connector(Microswitch)
SW1: Switch (Main/Sub change) CN7: Connector (Motor for By-pass operation)
SW2, 5: Switch (Function selection) CN9: Connector (Fan motor)
TM1: Terminal block (Power supply) TAB3: Tab connector (Fan motor)
TM2: Terminal block(External control input) TAB5: Tab connector (Fan motor)
TM3: Terminal block (Monitor output) CN9: Connector (Fan motor)
TM4: Terminal block CN10: Connector (Fan motor)
(Transmission cable and monitor output) CN16: Connector(High/Low/By-pass switch)
TB5: Terminal block (M-NET Transmission cable) CN32: Connector (Remote control selection)
TAB1,TAB2: Connector (Power supply) SA1: Address setting rotary switch (10 digit)
TR1 : Control circuit transformer SA2: Address setting rotary switch (1 digit)
TR2,TR3: By-pass operation transformer SYMBOL : Indicates terminal block.
Board insertion connector or fastening
connector of control board.
*Specifications may be subject to change without notice.