LG multi V ARUM Series User manual

2020/07/23 page 1
INSTALLATION MANUAL
Safety regulations
Installation
Operation
2xRS485
KM113.22MV2
A SET FOR THE APPLICATION OF AN OUTDOOR
COMPRESSOR CONDENSATION UNIT FOR A NON-
ORIGINAL EVAPORATION / HVAC UNIT
DESIGNED FOR OUTDOOR UNITS
LG Electronics
model series „ARUM--, ARUN--, ARUB--, ARWN—, ARWB--“
Version 2020/07/23

2020/07/23 page 2
TABLE OF CONTENTS
Chapter
Page
1
SAFETY
3
2
TECHNICAL PARAMETERES
3
3
DESCRIPTION OF APPLICATION
4
3.1
Guaranteed compatibility of the communication module with compr. unit
4
3.2
Permitted capacity of the heat exchanger in the HVAC equipment
4
3.3
System design
5
Application overview diagram (fig. 1)
6
Complete terminal diagram (fig. 2)
6
4
INSTALLATION –CONNECTION TO THE AIR-CONDITIONING SYSTEM
7
4.1
Mechanical installation
7
4.2
Connection terminals overview
7
Distribution of module terminals (fig. 3)
7
4.3
EEV module connection
8
4.4
Installation, connection of temperature sensors
8
4.5
Connection to an outdoor compressor unit
9
4.6
MOV-MV power limitation module connection (accessories)
9
5
CONNECTION TO SUPERIOR I&C HVAC SYSTEM
10
5.1
Control –descriptions, priorities
10
5.2
Inputs for external control –digital analogue
10
Control diagram –Power request for analogue input (fig. 4)
11
Logic input control diagram (fig. 5)
11
5.3
Outputs –information about the operational status of the equipment
12
5.4
MODBUS communication
13
Modules wiring diagram while using MODBUS protocol (fig. 6)
13
6
CONFIGURATION AND COMMUNICATION CHECK
14
6.1
Setting the power code and MODBUS communication address (fig. 7)
14
6.2
Introductory information sequence
16
6.3
Inspection of inputs / outputs –tests
17
6.4
Inspection of settings during operation
18
WARRANTY CARD
19

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1. SAFETY
The equipment was designed to pose minimum risks during installation and for the operator during use.
However, it is technically impossible to eliminate all risks and therefore, it is absolutely necessary to observe
the below specified instructions.
MANIPULATION AND HANDLING
Upon delivery make sure that the equipment does not show any visible signs of damage and matches the
parameters in the accompanying documentation.
SYMBOLS
Read the user’s guide before use.
INSTALLATION
The equipment may only be installed by a professional person possessing the necessary electrical an
air-condition system qualification and skills.
The equipment may only be put into operation by a professional person possessing the necessary
electrical and air-condition system qualification and skills.
OPERATION
The operator uses information display,which installed under a transparent cover. The user is not allowed to
interfere with the equipment in any way
2. TECHNICAL PARAMETERS
Technical parameters
Lead wire terminals
Spring terminal WAGO max wire cross section 2.5 mm2
Power supply
230 V ~ AC ±10 %/50 Hz (e.g. from the connected outdoor
unit)
Overvoltage category II
Recommended cable CYKY-J 3x1.5
Power input
Max. 30 W
Power supply of separate module KM113.22
24 V DC ±10 %/max. 800 mA, The source must be
separated by double insulation (SELV)
Other connected devices
Must be separated by double insulation (SELV)
Communication properties with an outdoor
unit
Two wires at RS485 safe voltage level
Parameters of Log. input (control)
12 VDC/5 mA voltage (passive-switch by free contact)
Analogue input parameters
10 VDC voltage with interconnected 0V potential, load
20 kohm (max. 0.5 mA)
Input temperature
DALLAS digital sensor, 3 m long (lengths 6 m and 10 m
accessories to order)
Log. output parameters
Contact relay with load of 50 VAC/DC, maximum 200 mA
EEV output parameters
24 VDC, 500 mA, inductive load, designed for valves EX4, EX5,
EX6
MODBUS communication
Serial line: RS485, 9.6 kbps, 8 bits, without parity, 1 stop bit
MOV-MV communication
Serial line: RS485
Using the electronic module KM113
Designed for installation with top layer overlap min. 1 mm
Mechanical parameters
Width x Height x Depth
310 x 246 x 145 mm (vertical installation on the wall)
Protection
IP65 based on the used cable glands
Work position
vertical
Mechanical durability
IK06
Temperature
-25 °C to +55 °C

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Humidity
0 to 90 % without vapour condensation
Maximum altitude
2000 m
Degree of pollution
2
Storage conditions
Temperature
-25 °C to +60 °C
Humidity
0 to 90 % without vapour condensation
3. DESCRIPTION OF APPLICATION
The communication module is designed for external control of an outdoor compressor unit called LG Electronics
model range “MULTI V **“ in applications where the unit serves as the source of cold/heat in HVAC systems.
The superior HVAC control system defines the operational mode and power requirements.
The communication module is installed in a plastic box including the necessary power supply. The delivered
system includes refrigerant temperature sensors installed at the input and output of the heat exchanger in the
HVAC equipment.
The module has an output for controlling a bipolar electronic expansion valve - model EX4--, EX5--, EX6--
(ALCO/Emmerson).
In an application where the compressor unit is used as a source of refrigeration, expansion valves with a one-
way refrigerant flow are used, i.e. EX4-M21, EX5-U21, EX6-M21.
In applications where the compressor unit is used as a heat source or as a source for several air handling
units/exchangers, it is necessary to use expansion valves with bidirectional flow, i.e. EX4-U31, EX5-U31, EX6-
M31.
The KM113.27UU module has 1 analogy input, 4 digital inputs, 2 digital outputs and 2 communication ports
(RS485) for controlling the compressor unit. The MODBUS input/output is intended for communication with the
superior I&C system. The “POWER“ output is intended for direct synchronous reduction of the compressor unit
output according to the current power requirement.
3.1 GUARANTEED COMPATIBILITY OF THE KM113.22MV2 MODULE WITH COMPR.
UNITS
Model range
Name of the outdoor unit
MULTI V 5
ARUM**LTE5
MULTI V S
ARUN**GSS0 ARUN**LSS0
MULTI V WATER IV
ARWN**LAS4
MULTI V WATER IV HEAT RECOVERY
ARWB**LAS4
MULTI V S WATER
ARWN**GA0
3.2 PERMITTED CAPACITY OF THE HEAT EXCHANGER IN THE HVAC EQUIPMENT
Cooling performance kW
Heat exchanger capacity kW
Expansion valve
kW
kBtu/h
Cooling mode
Heat pump mode
05
18
4.6
5.6
5.1
6.3
EX4-M21 / EX4-U31
07
24
5.7
8.2
6.4
9.2
EX4-M21 / EX4-U31
10
36
8.3
10.6
9.3
11.9
EX4-M21 / EX4-U31
12
42
10.7
12.3
12.0
13.8
EX4-M21 / EX4-U31
14
48
12.4
14.1
13.9
15.9
EX4-M21 / EX4-U31

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16
54
14.2
15,8
16.0
18.0
EX5-U21 / EX5-U31
22
76
15.9
22.4
18.1
25.2
EX5-U21 / EX5-U31
28
96
22.5
28.0
25.3
31.5
EX5-U21 / EX5-U31
33
115
28.1
33.6
31.6
37.8
EX5-U21 / EX5-U31
39
134
33.7
39.2
37.9
44.1
EX5-U21 / EX5-U31
45
153
39.3
44.8
44.2
50.4
EX5-U21 / EX5-U31
50
172
44.9
50.4
50.5
56.7
EX6-M21 / EX6-M31
56
192
50.5
56.0
56.8
63.0
EX6-M21 / EX6-M31
62
215
56.1
62.0
63.1
69.4
EX6-M21 / EX6-M31
67
236
62.1
67.0
69.5
75.7
EX6-M21 / EX6-M31
73
253
67.1
73.0
75.8
82.3
EX6-M21 / EX6-M31
78-123
279-468
1:1 application, capacity of the
heat exchanger corresponds to
the output of the compressor
unit
1:1 application, capacity of
the heat exchanger
corresponds to the output of
the compressor unit
EX6-M21 / EX6-M31
The capacity of the heat exchanger is determined under the following conditions:
Cooling mode: air temperature in front of the exchanger 27 °C, outside air temperature 35 °C
condensing temperature 45 °C, subcooling 15 K, evaporating temperature 8 °C, superheating 3 K
length of refrigerant connecting pipe 7.5 m, elevation 0 m
Heat pump mode: air temperature in front of the exchanger 20 °C, outside air temperature 7 °C
hot steam temperature 65 °C, condensing temperature 49 °C, subcooling 5 K
length of refrigerant connecting pipe 7.5 m, elevation 0 m
3.3 SYSTEM DESIGN
The design of the compressor unit - HVAC unit –I&C system is absolutely essential for proper function.
Although this manual does not address the overall design of the system, we recommend that you check, among
other things, when commissioning a system with a communication module:
1. Size (volume) of applied heat exchanger in HVAC
2. The amount of air passing through the heat exchanger in the HVAC
3. Speed of air flow through the heat exchanger in HVAC
4. The correct amount of refrigerant in the system with regard to the length of the piping and the size of
the heat exchanger in the HVAC
5. Air temperature in front of the heat exchanger. Permitted operating air temperature ranges - see the
documentation of the respective compressor unit (usually 18 to 35 °C in "cooling" mode and 10 to
24 °C in "heat pump" mode)
6. Function of the I&C system - the request for cooling or heating must not be activated if a sufficient air
flow through the heat exchanger in the HVAC is not ensured
7. Function of the I&C system in the "DEFROST" operating mode - the system must enable reliable
removal of icing from the outdoor unit and at the same time solve the low air temperature behind the
heat exchanger in the HVAC
The power request sent by the external I&C system is interpreted by the module as a temperature difference
with respect to the required value. It is assumed that this requirement is in accordance with the real physical
state of the heat exchanger - with decreasing power demand, the ability of the heat exchanger to transfer
power decreases (smaller temperature difference, smaller amount of air, etc.).
The communication module in no way interferes with the control logic of the external condensing unit.
Algorithms for controlling the speed of the invert compressor, condensing/evaporating pressure, etc. are
included in the software of the specific LG compressor unit.
To directly limit the power of the compressor unit, the “power limit” module (MOV-MV accessory) must be
installed.
When using MOV-UU, the algorithm of the compressor unit for changing the evaporating pressure/temperature
of approx. 14 to 6 °C (approx. 11 to 8 bar) is activated according to the setting of power code C1 to C7. In the
heat pump mode, according to the setting of power code H1 to H7, the algorithm of the compressor unit for
activating the condensing pressure/temperature of approx. 33 to 49 °C (approx. 19 to 29 bar) is activated.

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Attention, this temperature is variable according to the specific installation conditions (the above values apply
to a pipe length of 7.5 m, elevation 0 m).
Fig.1 –Application overview diagram KM113.22MV2 –compressor unit AR** -HVAC –I&C system
Fig.2 –Complete terminal diagram KM113.22UU
Communication MODBUS I&C
I&C system
for HVAC
Air inlet
HVAC unit
Air outlet
Temperature sensors on
refrigerant piping
R410A / R32 refrigerant piping
Outdoor unit
ARUM**
Module
MOV-MV
Power supply
KM113.22MV2
Communication
KM113.22MV2 - ARUM**
EEV
EX--
Communication - I/O I&C
Communication MOV-MV
KM113.22MV2 - ARUM**
APPLICATION OVERVIEW DIAGRAM
KM113.22MV2 - ARUM** - HVAC - I&C
Supply
Temp. sensor IN
Temp. sensor OUT
POWER control
0-10 V
Function select
Power select
Start (ON) / Stop
Defrost signaling
Error signaling
Outdoor unit
EEV valve

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4. INSTALLATION –CONNECTION TO THE AIR-CONDITIONING SYSTEM
4.1 MECHANICAL INSTALLATION
The communication box is to be installed near to the heat exchanger in
the HVAC system –refrigerant temperature sensors and EEV module at
the exchanger in the HVAC system are connected to the module
(standard cable length of refrigerant temperature sensors on the
evaporator is 3 m, sensors with a length of 6 m - accessories on
request).
The plastic box allows the module to be installed in indoor or outdoor
environments providing that safety installation procedures are observed
(the box integrity is not compromised, suitable cable glands are used).
If the box is installed outdoor, it is necessary to protect the box from
direct UV radiation (shaded area). In this case, we recommend using a
box with increased UV resistance (KM113.22UU-UV).
Preparation:
Remove the front cover from the installation box –loosen the 4 threaded locks at the cover corners. Now you
may access the connection terminals of the communication module and the power supply source.
Have cable glands suitable for your intended application ready.
Attach the communication box to a suitable vertical plane (use the holes and covers at the rear of the box).
4.2 CONNECTION TERMINALS OVERVIEW
Connect a suitable power cable (e.g. CYKY-J 3x1.5) to the power supply terminals of the communication box –
auxiliary terminals 1, 2, 3 (terminal block X1, 230 VAC –“L, N, PE”).
Connection terminals are divided into sections:
RS485 terminals (2x) directly on the communication module KM113.22
“POWER COM“ terminals for connecting the output limitation module of the
outdoor compressor unit
“MODBUS COM“ terminals for connecting MODBUS communication
Fig. 3 –Distribution of
terminals in the box
Separate external terminal block for power
connection
Terminal block directly on the communication module KM113.22
Left part –for connecting refrigerant temperature sensors to the heat
exchanger
Terminal block directly on the communication module KM113.22
Right part –for connecting inputs and outputs from external I&C system
Separate external terminal block X1 for connection of communication with external LG
compressor unit and EEV module

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4.3 EEV MODULE CONNECTION (ELECTR. EXPANSION VALVE –EX4-, EX5-, EX6-)
Mechanical installation of the EEV module –see the relevant installation manual delivered with the EEV.
Electrical connection of EEV to the communication module:
Connect a suitable connecting cable between the EEV module and the "EEV" terminals on terminal block X1 in
the installation box - terminals no. 6, 7, 8, 9.
ATTENTION!
The module MUST NOT be under voltage, when connecting the wires!
Follow the colour coding of the wires!
Changing the cable positions can damage the device.
4.4 INSTALLATION, CONNECTION OF TEMPERATURE SENSORS
Attach thermal sensors TEMP1 (blue) and TEMP2
(red) to suitable locations on the heat exchanger in
the HVAC system. The blue sensor is designed for
“input” of the refrigerant into the heat exchanger,
that is the small diameter pipes, and the “red”
sensor is designed for “output” of the refrigerant
from the heat exchanger - large diameter pipes.
To properly attach sensors to Cu pipes use, for
example fastening clamps to ensure proper heat
transfer to the sensor –see Fig.
After the sensors are attached make sure to
insulate them thermally from the environment.
Description: 1 –the most sensitive spot of the sensor
2 –maximises the contact between the sensor and pipe
Installation description:
Create a loop on the sensor cable in order to prevent collection of water/humidity in the sensor connection.
Notice:
Incorrect installation of temperature sensors may result in incorrect control of the cooling process.
Incorrect installation of temperature sensors may permanently damage the refrigerant sensors.

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CONNECTION OF REFRIGERANT TEMPERATURE SENSORS TO THE MODULE
Connect the temperature sensors TEMP1 and TEMP2 to the relevant terminals on the module. Sensor IN, blue
(refrigerant temperature in front of the exchanger) connect to terminals TEMP1 (terminals no.10+11).
Sensor OUT, red (refrigerant temperature behind the exchanger) connect to terminals TEMP2 (terminals no.
12+13).
Follow the colour coding of the sensors and wires –white wire to white terminal! Sensors are standardly
supplied with a cable length 3 m.
Notice:
When the temperature sensor is connected incorrectly or is defective the safety function of the communication
module is activated and the system generates corresponding error message (see the list of error messages of
the applied LG unit).
Sensors with longer cable length on request.
4.5 CONNECTION TO AN OUTDOOR COMPRESSOR UNIT
Connect a suitable power cable between the power terminals of the outdoor compressor unit (see the diagram
of the given unit) and the “supply” terminals in the communication box – terminal block no. 1-L, 2-N, PE.
Connect suitable (shielded) communication cable between the outdoor compressor unit (terminals “IDU“) and
“OUT COMM” box terminals – terminal block X1, no. 3 (A) +4 (B).
Attention, the polarity must be followed (marked A, B).
4.6 MOV-MV POWER LIMITATION MODULE CONNECTION (ACCESSORIES)
Make sure that the compressor unit is without voltage!
There is a risk of electric shock and damage to the device when installing the module under voltage!
Compressor unit accepts the module only when the power supply is activated. Before connecting the
power limitation module, address the system first!
Connect a suitable (shielded) communication cable between the terminals of the MOV-MV power limitation
module and the “POWER COM” terminals no. 29 + 30.
Attention, the polarity (colour of the terminals) must be followed.
Install the MOV-MV power limitation module in the outdoor compressor unit - the module plugs into the
connector on the PCB of the outdoor unit (example for the ARUN –LTE4 series outdoor unit).
ATTENTION, the orientation of the module in relation to the connector must be observed - see the
MOV-MV module manual.

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5. CONNECTION TO SUPERIOR I&C HVAC SYSTEM
5.1 CONTROL –DESCRIPTIONS, PRIORITIES
As for the external control the communication module allows you to use:
1/ “MODBUS“ communication protocol
2/ request on capacity through the use of 0…10V signal, operating mode via contact input
3/ request on capacity through the use of contact inputs (3 max), operating mode via contact input
The communication module respects priority of external signals as follows:
If the MODBUS communication sends at least one record from the recorded registries only commands from
MODBUS will be respected (logic and analogue signals are ignored) until the power supply is turned off.
In the analogue signal is above the power output “1” the analogue input for the power value will be accepted as
the control input.
If one of the two control inputs "MODBUS" or "analog" is not activated after switching on the power supply, the
control by logic signals (contacts) is respected.
The connection is made directly at the terminals of the communication module KM113.22.
MODBUS PROTOCOL CONTROL (MONITORING) (see separate section for description)
5.2 INPUTS FOR EXTERNAL CONTROL –digital, analogue
OPERATION ACTIVATION (ON-OFF)
Input terminals “ON” – Logic input (voltage-free contact).
When the contact "0V + D4" is closed (terminals 18+22) the operation of the device is allowed, when it is
opened the operation is stopped.
The current status of this input is indicated on the display by the size of the letter showing the selected
operational mode.
Example:
„cO … 24 … 24“ = operational mode “cooling “, operation is not allowed
„CO … 24 … 24“ = operational mode “cooling“, operation is allowed
„hO … 24 … 24“ = operational mode “heat pump”, operation is not allowed
„HO … 24 … 24“ = operational mode “heat pump”, operation is allowed
OPERATIONAL MODE REQUEST “COOLING=C“, “HEAT PUMP=H“
Input terminals “MODE C/H” - Logic input (voltage-free contact)
When the contact “0V+DI1“ is closed (terminals 18+19) the communication module sends a request to switch
the compressor unit from “cooling” mode to the “heat pump” mode = H“.
When the contact is off/open the communication module will send a request to switch the operational mode
from “heat pump” back to the “cooling mode = C“.

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“POWER LEVEL REQUEST”
Fig.4 - Control diagram –Power request for analogue input (Operational mode through logic input)
A request for power level may be
executed through an analogue signal
0…10VDC or through 3 logic inputs
(voltage free contacts).
To directly influence the output
(change of evaporating temperature in
cooling mode/change of condensing
temperature in heat pump mode) it is
necessary to install a capacity
limitation module at the same time.
1. Input terminals “POWER 0…10V“
(terminals 16+17) –analogue
signal 0…10V (0 V = no request
for power level, 10 V = maximum
power level request). The current
power request is shown on the
right side of the display module
using 8 codes (“C0…C7“ or rather
“H0…H7“).
The power request algorithm requires
at least "C1"/"H1" code (i.e. at least
1.5V) to activate the compressor unit.
The power request algorithm requires at least "C0"/"H0" code (that means maximum 1.3V) to stop the
compressor unit.
Fig.5 - Logic input control diagram –free contact type
2. Input terminals “POWER
1ST,2ST,3ST“ – logic inputs
(voltage free contacts):
no contact closed = no
power request
contact POWER 1st closed
(terminals 18+20) = low
power request
contact POWER 2st closed
(terminals 18+21) = higher
power request
both contacts POWER
1ST+2ST closed (terminals
18+20+21) = maximum
power request
the current power demand is
displayed on the right position
of the module display via 4
codes (“C0, C1, C3, C7, “ or
“H0, H1, H3, H7”)
Power control
Level 1 to 7
Cool / Heat
Start / Stop
I&C
Cool / Heat
Power level
0,1,4,7
Stop / Start
I&C

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5.3 OUTPUTS –INFORMATION ABOUT THE OPERATIONAL STATUS OF THE
EQUIPMENT
DEFROST
Logic output “DEFROST”(terminals 23 + 24).
The contact is closed if the equipment is in the “defrost” mode and at the same time the display module shows
an information message “d F”
During normal operation of the device, the contact is open.
ERROR
Logic output “ERROR“(terminals 25+26).
The contact is off/open if the equipment diagnostics identified a defect or the equipment is not powered - no
supply voltage.
The defect code is also shown on the module display using the variable communicated by the MODBUS.
Defects identified by the communication module: Er .. 2 thermometer error “blue”
Er .. 6 thermometer error “red”
Er .. 99 Modbus communication error
Er .. 5 Communication error with the outdoor unit
Er .. XX outdoor unit errors
List of error codes of the outdoor unit –see the servicing manual of the applied LG equipment.
If more than one error has occurred at the same time, only the code of the first error is shown on the display.
During regular operational status the contact is on/closed.
Notice:
To restart the device after errors occur, it is NECESSARY to perform a "RESET" of the compressor unit device,
i.e.disconnect the device from the power supply.

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5.4 CONTROL /COMMUNICATION MODBUS
In order to control up to 23 modules from the
superior system you may use the MODBUS
communication as an option to control or monitor the
equipment.
Input/output “MODBUS“ (terminals 23+24)
The address for MODBUS communication is set using
the “SETTINGS” button. The setting procedure to be
found in paragraph 6.
PARAMETRY KOMUNIKACE MODBUS
Serial line: 9.6 kbps, 8 bits, no parity, 1 stop bit
Station address: hex91 - hexA7 (default hex91)
Supported functions: - 3 (Multi_Read)
- 6 (Single_Write)
- 16 (Multi_Write)
Fig.6 - MODBUS communication wiring diagram
for controlling multiple modules
READING REGISTRIES
Name
Address
(decadically)
Properties/description
VERSION
4096
Software version
ERROR
4097
Errors according to the device’s self-diagnostics (see the service manual of the
LG device), (error 99 + Modbus communication error)
TEMP1
4098
Refrigerant input temperature to the exchanger +15 °C (blue sensor, smaller
diameter)
TEMP2
4099
Refrigerant output temperature to the exchanger +15 °C (red sensor, bigger
diameter)
DEFROST
4100
1 = active defrost mode of the outdoor unit
RECORDING REGISTRIES
Name
Address
(decadically)
Properties/description
POWER
4101
The value of the required power 0 to 7 corresponds with analogue input
FUNCTION
4102
Bit 0
0 = cooling; 1 = heating (heat pump)
Bit 1+2
Power value 0,1,2,3 (this value is used to control the power only if the
value in the registry POWER is = 0)
Bit 3
0 = OFF; 1 = ON
Bit 6
1 = RESET
I&C

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POWER
7
6
5
4
3
2
1
0
A2
A1
A0
FUNCTION
7
6
5
4
3
2
1
0
RESET
OFF/ON
L1
L0
C / H
The RESET function is used for example when you need to transfer the control of hardware to signals without
the need to shut down the power supply to the unit.
When the communication is activated through the first record it is necessary to communicate more
often than during 50 seconds (the recommended communication frequency is once every 1 to 10
second).
If writing is not repeated, the situation will be considered as a MODBUS communication error (error
Er 99).
Notice: If an error is active (ER--), the registers are automatically set to “0”.
Reading the values of the read registers is possible at any time without time limit and does not affect the
control by HW signals.
6. CONFIGURATION AND CONNECTION CHECK
6.1 SETTING THE POWER CODE AND MODBUS COMMUNICATION ADDRESS
Power code and address for MODBUS communication are set
using the button “SETTINGS / CAPACITY / MODBUS
ADDRESS“.
Setting procedure:
ENTERING THE “SETTINGS” MODE
1. Press the SETTINGS button while turning on the power to the module
-Entering the setting mode is indicated on the display by a character:

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ENTERING THE “POWER CODE SETTING” MODE
2. Hold the SETTINGS button for 5 s.
-The display shows the set power code in kW.
-The power code can be changed by shortly pressing the SETTINGS button. It changes cyclically
according to the following table
Cooling
power
kW
05
07
10
12
14
16
22
28
Btu
18
24
36
42
48
60
80
100
kW
33
39
45
50
56
62
67
73
Btu
120
140
160
180
200
220
240
260
ENTERING THE “MODBUS ADDRESS SETTING” MODE
3. Hold the SETTINGS button for 5 s.
-The display shows the set address for MODBUS communication. This address is also usable for LG
central control systems.
The MODBUS address can be changed by briefly pressing the SETTINGS button. It changes
cyclically from 90 to A7. (90 = service communication; 91,…, A7 = MODBUS communication)
Address
90
91
92
93
94
95
96
97
99
9A
9B
9C
9D
9E
9F
A0
A1
A2
A3
A4
A5
A6
A7
ENTERING THE “PROGRAM SELECTION” MODE
4. Hold the SETTINGS button for 5 s
-The display shows the setting of the active program “0“.
-Service settings –do not change the program
5. Hold the SETTINGS button for 5 s to return to point 2.
If you do not press the SETTINGS button for 10 seconds, the last set value is automatically saved, the setting
mode is exited and the initial information sequence appears on the display.
Attention! After changing the settings, it is necessary to restart the outdoor unit (restore power). If
the outdoor compressor unit is not restarted, the changes are not accepted by the unit.
SETTING THE INTERNAL SYSTEM ADDRESS (AUTO-ADRESSING PROCESS)
When starting the system for the first time, it is necessary to perform auto-addressing of the system –see the
relevant installation manual for the outdoor compressor unit. During the addressing process, the “- -“ symbol
appears on the display. After the addressing is completed, the display shows the assigned module address in
hexadecimal format (for approx. 10s).
The assigned address is displayed in the introductory information sequence:
1st cycle - basic hardware and software setting information –example:
“LG … Ar … 56 … So … 4.3 …So … 3“
Explanation –module designed to communicate with the compressor unit, model series ARUM/N, power code
set to 56kW, software version 4.3, user software 3
2nd cycle - basic hardware and software setting information –example:
“LG … Ar … 56 … So … 4.3 … So … 3 … 11“

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Explanation –module designed to communicate with LG compressor unit, ARUN model series, power code set to
56kW, software version 4.3, user software 3, assigned station / address number “1“ for communication with
ARUM--- outdoor unit.
Notice:
If no address has been assigned to the module, the symbol “- - “ will be displayed in the appropriate position
for the address in the introductory sequence –i.e. the system did not auto-address successfully, the outdoor
compressor unit does not communicate with the KM113.22MV2 module.
If several communication modules are connected to one outdoor compressor unit, each module must have
different address.
Upon delivery, the module is delivered with the preset address “1”.
After these initial sequences, the display will show current status of the operation request
Example
“cO … -1 … 6““
Explanation: cooling operating mode, no operation allowed, no power demand, current temperature of the input
refrigerant piping to the heat exchanger in HVAC -1 °C (blue sensor), on the output +6 °C (red sensor).
Refrigerant temperature display range MIN = -9, MAX= 99.
Attention:
If the power code is set incorrectly, the safety function of the external compressor unit may be activated.
When setting the power code, both the module and the device must be without voltage (changing the power
code is accepted by the module when the power supply is activated).
Notice:
If several communication modules are connected to one outdoor compressor unit, each module must have a
different address. The address of the communication module(s) for internal communication between the
outdoor unit and the modules is assigned automatically during the auto-addressing process (the process is
activated from the outdoor unit).
ADDRESS OF COMMUNICATION MODULE FOR COMMUNICATION WITH COMPRESSOR UNIT:
The address of the communication module(s) for internal communication between the outdoor unit and the
modules is assigned automatically during the auto-addressing process. The process is activated from the
outdoor unit (see the relevant manual for the outdoor compressor unit).
Display of the assigned address - see section "Introductory information sequence".
COMMUNICATION MODULE ADDRESS FOR CENTRAL CONTROL IN THE LG SYSTEM:
The address of the communication module(s) for central control via the LG protocol (central
controller/converter) is identical to the MODBUS address.
6.2 INTRODUCTORY INFORMATION SEQUENCE
Communication module functionality test
Activate the supply voltage - the display will show the introductory sequence:
1ST cycle –basic information about hardware, settings and software - example:
“LG …Ar …56 …So …4.3 … So … 3“
2nd cycle –basic information about hardware, settings, software and assigned address - example:
”LG …Ar …56 …So …4.3 …So … 3 … 1“
Meaning - module designed for communication with the LG compressor unit, ARUM / N model series, set power
56kW, software version 4.3, user software 3, assigned station number/address "1" (set on delivery).
After these initial sequences, the display will show the current status of the operation request - example:
“cO …-1 …6““

2020/07/23 page 17
Explanation: cooling operating mode, no operation allowed, no power demand, current temperature of the input
refrigerant piping to the heat exchanger in HVAC -1 °C (blue sensor), on the output +6 °C (red sensor).
Refrigerant temperature display range MIN = -9, MAX= 99.
6.3 INSPECTION OF INPUTS / OUTPUTS –TESTS
WARNING! All the described functionality tests may ONLY be done by an authorized person. Incorrect test
performance may result in equipment breakdown. Make sure that the test will not damage the equipment or
endanger persons near the equipment!
INPUT TESTS –temperature sensors
1. Test for the presence of the refrigerant temperature sensor at the input to the heat exchanger (terminals
TEMP1, blue) - if the sensor is defective or the connection is incorrect, “Er-2” error flashes on the LED
display. Status of this input is permanently indicated by the LED below the display (blue LED is lit = module
communicates with the sensor).
2. Test for the presence of the refrigerant temperature sensor at the output from the heat exchanger
(terminals TEMP2, red) - if the sensor is defective or the connection is incorrect, “Er-6” error flashes on the
LED display. Status of this input is permanently indicated by the LED below the display (red LED is lit =
module communicates with the sensor).
INPUT TESTS –power request
The power request is processed by the module only if the operation of the compressor unit is enabled - closed
contact „ON (DI4). If a power demand is active at the module input and the operation of the compressor unit is
not enabled (contact ON is open), the device will not be activated.
If the operation of the compressor unit is blocked, but at the same time the power demand is active, this state
can be recognized by the case of the operation request letter on the display (e.g. "C4" = cooling request,
operation enabled, "c4" = cooling request, operation not allowed).
3. The analog input test is performed by applying a DC voltage of 0-10 V to the "POWER 0–10 V" terminals.
The display shows the value C0, C1,…, C7. Since we need 8 positions for the range 0-10 V, the voltage for a
change of one degree is about 1.4 V. (ATTENTION, at the same time "operation must be" - contact "ON"
closed.)
4. Test of logic (contact) input for power switching - disconnect the analog voltage and perform a test of logic
inputs, gradually connect the terminals "POWER 1st / 2st / 3st" with a suitable wire. When the "0V"
terminals are connected to the "DI2" terminal, power stage 1 is activated - the display shows the value C1.
When the "0V" terminals are connected to the "DI3" terminal, power stage 2 is activated - the value C3
appears on the display. When the "0V" terminals are connected to the "DI2" and "DI3" terminals at the
same time, power stage 3 is activated - the value C7 appears on the display. (ATTENTION, at the same
time "operation must be" - contact "ON" is closed.)
5. Logic (contact) input test for switching the operating mode - disconnect all power request and connect the
"MODE C / H" terminals with a suitable wire. When the "0V" terminals are connected to the "DI1" terminal,
the heat pump operating mode is activated - the "H0" character appears on the display. Now we connect
the power request - the corresponding request ("H1"….) Will appear on the display.
Example of displayed requests:
„C3 … 6 …8““
„H2 … 58 …37““

2020/07/23 page 18
OUTPUT TESTS
6. Error message test - if we disconnect for example the temperature sensor TEMP1, an error will occur, see
the display, and output ERROR opens the contact.
Example of displayed errors: „Er-2-Er-2-Er-2…“
If the system diagnoses several errors at the same time, only the error that occurred first will be displayed.
After removing it, the second error will be displayed.
7. DEFROST function test always after activating the power supply of the module, the contact closes
momentarily for testing reasons (approx. 2 s).
Notice: This output is necessary for the correct function of the "HVAC compressor unit" system in "heat pump"
mode. The superior HVAC control system must ensure the correct appropriate response of the HVAC system.
After performing the tests, check the tightness of the bushings and reattach the cover of the installation box
and visually check its tightness.
6.3 INSPECTION OF SETTINGS DURING OPERATION
During operation, without deactivating the supply voltage, the pressure status of the system (if a pressure
sensor is installed), the set power code, the address for central control (MODBUS) and the last 10 error states
of the device can be verified.
1. After a short press of the SETTINGS button, the display shows the pressure (in bar). If the pressure
gauge is not used, 0 is displayed.
2. Hold the SETTINGS button for approx. 5 s.
The display shows the set power code in kW
3. Hold the SETTINGS button for approx. 5 s.
The display shows the set address for MODBUS communication. This address is usable (same) for LG
central control systems.
4. Hold the SETTINGS button for approx. 5 s.
The display shows numerical code of the selected user program for controlling the EEV.
In this mode, the values can be viewed, not changed. The "current setting information" mode ends
automatically after approx. 5 s and the display shows the current status of the operating requirements and the
temperature values.

2020/07/23 page 19
Warranty card
Equipment specifications
Product
communication box to control outdoor compressor condensation
unit LG Electronics.
model series “ARUN**”
output for bipolar expansion valve control EX5, EX6
Model
KM113.22MV2
Scope of delivery –accessories
communication module KM113.22MV2
power supply (24 VDC), switch,
Refrigerant temperature sensor “BLUE” (TEMP1-IN = small )
refriegerant temperature sensor “RED” (TEMP2-OUT“ = large )
installation box, auxiliary terminals,
cable glands (6pcs),
installation manual
Serial number
Date of sale
Seller
Installation date
Installation performed by
The manufacturer provides a 24-month warranty covering the quality of the product starting on the day of sale. The warranty
covers defects of the purchased product,which appear during the warranty period. In order to keep your warranty valid the
installation must be performed by an authorized person and the “Warranty form” must be properly filled out. The client shall
always claim the given warranty rights at his own seller.
Service contacts
Manufacturer (branch)
CONTES, spol. s r.o.
Mikuleckého 1314
147 00, Praha 4
Telephone
261 710 655
E-mail
[email protected]
Distributor
Jílovišťská 691
155 31, Praha 5
244 402 140
[e-mail]
Seller’s service