Mitsubishi Electric Lossnay LGH-15RX3-E User manual

Models ■Lossnay Unit
LGH-15RX3-E
LGH-25RX3-E
LGH-35RX3-E
LGH-50RX3-E
LGH-80RX3-E
LGH-100RX3-E
LGH-150RX3-E
LGH-200RX3-E
■Lossnay Remote Controller
PZ-41SLB-E
PZ-52SF-E
TECHNICAL MANUAL (CONTROLS)

CONTENTS
1. Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. Applicable Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4. System Features and Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5. Examples of Applications Using External Control Input Terminals,
Operation Monitor Output Terminals and Malfunction Monitor Output Terminals . . . . . . . . . . . . . . . . . . . . . . . 21
6. Precautions When Designing Systems of M-NET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7. Cable Installation of the M-NET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8. System Designs of M-NET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9. Automatic Ventilation Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
10. Cold Weather Area Operation Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
12. Installation method (Model LGH-RX3-E series) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
13. Lossnay Remote Controller (PZ-41SLB-E) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
14. Lossnay M-NET Remote Controller (PZ-52SF-E) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
15. Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
* Centralised Controller (MJ-103MTRA)
(Operation setting, Initial setting, Group configuration setting, Interlocked operation setting) . . . . . . . . . . . . 74
* Remote Controllers for Mr. Slim indoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
* Network Remote Controller (PAR-F25MA) (Interlocked registration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

1
1. Summary
This is a technical manual relating to the controls for implementing the following systems of the commercial-type Lossnay (LGH-
RX3-E Series).
Possible System Configurations
(1) When using only the Lossnay remote controller.
(2)Linking Lossnay and City Multi units.
(3)Linking Mr. Slim (A-control, K-control).
(4)Lossnay central control systems.
(5)Linking with external equipment (BMS).
2. Applicable Models
●Lossnay (LGH-RX3-E)
These models have temperature sensors at RA and OA sides. It can automatically switch to the ventilation mode.
(Lossnay/By-pass)
Model
LGH-15RX3-E
LGH-25RX3-E
LGH-35RX3-E
LGH-50RX3-E
Model
LGH-80RX3-E
LGH-100RX3-E
LGH-150RX3-E
LGH-200RX3-E
●Lossnay Remote Controller (PZ-41SLB-E)
Use when operating from 1 to 15 Lossnay units together at the same time. When using M-NET transmission to operate from
centralised control, use the PZ-52SF-E.
It can start and stop the unit, change fan speed, switch the ventilation mode. It also includes indicators that show errors and
when filter maintenance is required. Refer to page 63.
●Lossnay M-NET Remote Controller (PZ-52SF-E)
It can be used in combination with Mitsubishi Electric Air conditioner Network system (MELANS). Refer to page 69. Since
this remote controller is supplied the power from the M-NET transmission line, it cannot be linked with Mr. Slim and other
such systems that do not use M-NET.
Please refer to the technical documentation for the other systems: City Multi, Mr. Slim
and the central controller (MELANS).

2
3. Terminology
●Interlocked Lossnay
This is a Lossnay linked to City Multi, or Mr. Slim indoor units. This is a Lossnay that has been set to interlocked group set-
ting to receive signals and operate via indoor unit’s remote controller →indoor unit →Lossnay.
●Non-interlocked Lossnay
This is a Lossnay that is not set to interlocked group setting with City Multi nor Mr. Slim indoor units. It operates using direct
operating signals from the Lossnay remote controller and/or centralised controller.
●Ventilation Mode
This mode controls the Lossnay damper and permits selection of heat recovery (Heat ex.), by-pass or auto modes.
●Delayed Operation
The Lossnay that has been set to interlocked group setting with the indoor unit will have its operation delayed for 30 minutes
after the operation of the indoor unit. When using PZ-41SLB-E, the time setting that can be set for delayed operation are 10,
20, 30, 40, 50, and 60 minutes.
●External Control Input
This is an input signal for operating the Lossnay that has been sent from an external device. It is compatible with 12V-24V
DC or uncharged a-contact signal.
●Operation Mode
This mode is used for selecting enabling/disabling of the on/off control signal from an external device and for setting inter-
locked operation of the external device and the Lossnay.
Please Refer to page 22 for details.
ON/OFF interlock: Enables both “ON →OFF” and “OFF →ON” external signals.
ON interlock: Enables “OFF →ON” external signal. Disables “ON →OFF” external signal.
OFF interlock: Enables “ON →OFF” external signal. Disables “OFF →ON” external signal.
External priority: Same as on/off interlock but the OFF signal from the remote controller is ignored when the
external control signal is on.
●Setting Pulse Input
When the control signal from the external device outputs a pulse such as the one shown below, pulse input setting is per-
formed by the Lossnay. (Optional setting DIP switch 2-2 ON)
200 ms or more
●Operation in Cold Areas
When the outdoor air is less than -10°C, continuous operation of the fan for drawing in supply air is cancelled, and intermit-
tent operation is started.
●RA (Return Air)
This is the abbreviation for return air, which is the air drawn in from indoor.
●OA (Outdoor Air)
This is the abbreviation for outdoor air, which is the air drawn in from outdoor.
(

3
Classification
Control
Function
Installation
Maintenance
Item
• Multiple unit operation
• Remote controller operation
• External device operation
• External pulse control
• External monitor signal output
• Supply air fan monitor output
• External control operation mode setting
• Delayed start
• Automatic recovery following power sup-
ply interruption (*1)
• Power supply start/stop function
• High/low change input
• Remote/Local control change
• The M-NET air conditioning operation.
• Centralised control by Mitsubishi building
air control management system
• Interlocked with Mr. Slim
• Lossnay (heat recovery) ventilation/By-
pass ventilation automatic switch
• For cold area operation
• Remote controller 2 wires wiring
(non-polar)
• Address setting unnecessary
• Test operation switch
• Filter maintenance display
(remote controller display)
• Inspection display
(remote controller, control board LED)
• M-NET power supply display
(control board LED)
Notes/Cautions
Maximum 15 units with PZ-41SLB-E; 16 units with PZ-
52SF-E or other M-NET controller.
Last touch priority
Signal form: 12VDC, 24VDC, uncharged a-contact
Ditto
Uncharged a-contact (external monitor/supply air fan
monitor change)
Ditto
ON/OFF , ON, OFF and External priority ON/OFF mode.
Delayed time can be varied only when the PZ-41SLB-E is
connected.
Return power automatic return is fixed when the PZ-
41SLB-E is connected.
Impossible when the PZ-41SLB-E is connected.
Uncharged a-contact (Part sold separately is necessary)
Uncharged a-contact (Part sold separately is necessary)
(Connection is impossible when using PZ-41SLB-E)
Only when M-NET transmission cable is connected
Ditto
Can not use the PZ-41SLB-E
When the PZ-41SLB-E is connected: PVC cable ø 0.65
to 1.2 or strand wire 0.3 mm2to 1.25 mm2.
When M-NET is connected: shielded wire or equivalent
1.25 mm2to 2.00 m2.
Excluding central controller system (except automatic
address)
For Lossnay single unit test operation
4. System Features and Examples
4.1 Features
*1 The operation condition is stored, and when the power is turned off and then back on, the operation condition returns to the
previous condition. (When using PZ-41SLB-E, the start/stop condition from an external device is not stored.)

M-NET System
4.2 System Example
Operating with an external device
●The operation of the Lossnay will be connected with the operation or
stopping of the external device.
●Input of level signal or pulse signal (12V DC, 24V DC, uncharged a-
contact) is possible.
1 Lossnay with 1 remote controller
●This is a simple system.
A Lossnay is operated independently with 1
remote controller.
Multiple Lossnay units with 1 remote controller
●Up to 15 Lossnay units can be controlled at
one time with one remote controller. *
2 remote controller system with 1 Lossnay
●The Lossnay can be controlled from 2 remote
locations.
●The remote controller gives priority to the last
touch.
Operating with Mr. Slim (A-control or K-control)
●The Remote controller (A-control or K-control) controls the air condi-
tioning device and the Lossnay.
●When using the A-control remote controller operating or switching fan
speed for the Lossnay individually is possible.
4
Basic System (refer to page 9)
Operation with an Air Conditioning Unit
(refer to page 12)
Operating with an External Device
(refer to page 21)
Lossnay
Non-polar
2 wires
Remote controller
PZ-41SLB-E
Power supply
Lossnay
Non-polar
2 wires
Power supply
Remote
controller
PZ-41SLB-E
(Sub)
(Main)
Lossnay
Power supply
Lossnay
Non-polar
2 wires
Remote controller
PZ-41SLB-E
Power supply
Air conditioning device and system control
●It is possible to operate 16 indoor units per 1 Lossnay
Indoor
unit
MA remote controller
Outdoor unit
Indoor
unit
MA remote controller
Lossnay Indoor
unit
MA remote controller
Lossnay
Indoor
unit
Indoor
unit
MA remote controller
Indoor
unit
MA remote controller
Lossnay Indoor
unit
MA remote controller
Indoor
unit
MA remote controller
Lossnay
Indoor unitIndoor unit
Group 1 Group 5Group 3 Group 4Group 2
Outdoor unit Outdoor unit
Indoor
unit
MA remote controller
Lossnay Lossnay
Group 1
Lossnay
Group 2 Group 3
Refrigerant 1 Refrigerant 2
●Control of start/stop, fan speed and ventiliation mode is possible from the Lossnay M-NET remote controller.
●Control of start/stop, fan speed and ventiliation mode is possible from the centralised controller.
●It is possible to set a maximum of 16 units for 1 group.
Lossnay M-NET
remote controller
PZ-52SF-E
Lossnay Lossnay
Group 1
Lossnay M-NET
remote controller
PZ-52SF-E
Lossnay Lossnay LossnayLossnay
Group 3
Lossnay M-NET
remote controller
PZ-52SF-E
Lossnay
Group 4Group 2
Centralised controller
Power
supply
unit
Lossnay M-NET
remote controller
PZ-52SF-E
Lossnay
Group 5
Lossnay
Power supply
Power supply
Remote
controller
Mr. Slim
(indoor unit)
Lossnay
Power supply
Power supply
Remote controller
Indoor unit
Remote controller
PZ-41SLB-E
Non-polar
two wires
City Multi and Lossnay Interlocked System
Centralised Management System
* In the case of LGH-150/200RX3-E, there are 2 circuit boards installed in each unit, so count each unit as 2 Lossnay units.
●Selection of inter-
locked operation
mode is possible.
●Delayed start inter-
locked operation is
possible.

Use Lossnay M-NET remote controller PZ-52SF-E .
(Do not use PZ-41SLB-E).
Lossnay transmission connection terminal
5
2 remote controller system with multiple Lossnay units
●It is also possible to operate 2 remote controller units when using multi-
ple Lossnay units.
Power supply
Power supply
Remote controller
PZ-41SLB-E
Interlocking multiple units
When the operation signal is a uncharged a-contact signal
Interlocking/individual joint systems
By making the group setting, interlock settings have become possible.
(Joint use of the air conditioner remote controller and Lossnay remote
controller is possible.)
●Interlocking is possible from multiple air conditioning units, etc.
(excluding pulse input)
(Separately sold parts are necessary depending on the operation signal).
●Applicable indoor units are C type or later (for use with MA remote con-
troller) models
●Do not set the air conditioning unit and Lossnay unit to be part of the
same group.
When the address number has been changed, the data in the memory is
automatically reset.
Power suupy Power suupy Power suupy Power suupy
Lossnay
A/C A/C A/C
Remote
controller
PZ-41SLB-E
Air conditioning
unit side remote
controller
Air conditioning
unit side remote
controller
Air conditioning
unit side remote
controller
Indoor unit
(01)
Centralised
controller
(201) Outdoor
unit (51)
Operation settings
MA remote
controller
Lossnay (02)
Lossnay M-NET
remote controller
(PZ-52SF-E)(102)
Group 1 Group 2
Use Lossnay remote controller PZ-41SLB-E .
(Do not use PZ-52SF-E).
Lossnay transmission connection terminal
ABS65654321
ABS A65BS
0
2
0
1
SA1 SA2SA1 SA2
0
1
SA1 SA1
Transmission cable
Transmission
cable
Round terminal
M-NET Transmission cable
input terminal block
Shielded wire
M-NET
Transmission cable
Remote Controller Input Terminal
Main/Sub switch (SW1)
Main Sub
(Set to Main when
shipped from the factory)
( ) address
LGH-15 to 100RX3LGH-150 and 200RX3
LGH-15 to 100RX3
TB5
LGH-150 and 200RX3
TB5
Setting
Setting LGH-15 to 100RX3LGH-150 and 200RX3
Upper
circuit
board
[Sub]
ex. SA1 = 0,
SA2 = 2
Lower
circuit
board
[Main]
ex. SA1 = 0,
SA2 = 1

6
4.3 System Selection
Interlocked with City Multi (Refer to page 16)
Lossnay operation when indoor unit is stopped ●●
Lossnay stopping when indoor unit is operating ●●
Switching Lossnay fan speed
When interlocked with indoor unit for compatibility with both R22 and R407C High/Low
When interlocked with indoor unit for other than the above Fixed to high
Ventilation mode Fixed to automatic
Filter maintenance indicator ●●
Lossnay error indicator ●●
Delayed operation ●●
External control operating mode selection ×
Number of indoor units for interlocked group setting with one Lossnay unit
16 units
Number of Lossnay units for interlocked group setting with one indoor unit
1 unit
Interlocked with external device (BMS)
(Refer to page 21)
Start/Stop ●●
Fan speed switching
Fixed to high
Ventilation mode switching
Fixed to automatic
Filter maintenance indicator ×
Lossnay error indicator ×
Delayed operation ●●
External control operating mode selection ●●
Lossnay unit
LGH-RX3-E
M-NET transmission cable
Remote controller
City Multi
indoor unit
Interlocked with Mr. Slim (Refer to page 12)
When using A-control remote controller
Lossnay operation when indoor unit is stopped ●●
Lossnay stopping when indoor unit is operating ×
Lossnay fan speed switching High/Low
When using K-control controller
Lossnay operation when indoor unit is stopped ×
Lossnay stopping when indoor unit is operating ×
Lossnay fan speed switching
Fixed to high
Other common items
Lossnay error indicator ×
Ventilation mode
Fixed to automatic
Filter maintenance indicator ×
Delayed operation ●●
External control operating mode selection ×
Number of indoor units for interlocked group setting with one Lossnay unit 1 unit
Number of Lossnay units for interlocked group setting with one indoor unit 1 unit
Slim-Lossnay connecting cable
(Enclosed accessory)
Remote controller
Mr.Slim (A, K-control)
indoor unit
Lossnay remote
controller
cannot be used.
Lossnay unit
LGH-RX3-E
Independent Lossnay Unit (Not interlocked with
City Multi or Mr. Slim systems.)
(Refer to page 9)
Start/Stop ●●
Fan speed switching High/Low
Ventilation mode Heat ex. /
By-pass/ Auto
Filter maintenance indicator ●●
Lossnay error indicator ●●
Delayed operation ●●
External control operating mode selection ●●
Number of Lossnay units 15 units
(
In the case of LGH-150/200RX 3 -E, count each unit as two for calcultion)
Number of remote controllers 2 units
Lossnay remote controller
(PZ41SLB-E)
EXT. signal source
for interlocking
to the Lossnay
Lossnay unit
LGH-RX3-E
EXT. signal source
for interlocking
to the Lossnay
Lossnay unit
LGH-RX3-E

7
Central Con-
troller Sys-
tem
Central Controller System
Centralised Controller
Power supply unit
PAC-SC34KUA
Indoor unit Lossnay Indoor unit
Outdoor unit
A-control Mr.Slim outdoor unit
Mr.Slim A-control
remote controller
A-control
Mr.Slim indoor unit
Lossnay
Lossnay M-NET
remote controller
(PZ-52SF-E)
EXT.
signal
source
Lossnay M-NET
remote controller
(PZ-52SF-E)
Remote controller
K-transmissoin
converter
Remote controller
Mr.Slim K-control
remote controller
K-control
Mr.Slim indoor unit
Lossnay
LossnayLossnay
Lossnay M-NET
remote controller
(PZ-52SF-E)
Lossnay
Caution:
●Lossnay remote controller PZ-41SLB-E can not be used.