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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 1
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Table of Contents
Related Manuals for LG multi V ARUM Series
Summary of Contents for LG multi V ARUM Series
- Page 1 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 1...
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Page 2: Table Of Contents
TABLE OF CONTENTS Chapter Page SAFETY TECHNICAL PARAMETERES DESCRIPTION OF APPLICATION Guaranteed compatibility of the communication module with compr. unit Permitted capacity of the heat exchanger in the HVAC equipment System design Application overview diagram (fig. 1) Complete terminal diagram (fig. 2) INSTALLATION –... -
Page 3: Safety
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. -
Page 4: Description Of Application
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. -
Page 5: System Design
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. -
Page 6: Application Overview Diagram (Fig. 1)
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 APPLICATION OVERVIEW DIAGRAM KM113.22MV2 - ARUM** - HVAC - I&C Communication MODBUS I&C... -
Page 7: Installation - Connection To The Air-Conditioning System
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 2020/07/23 page 7... -
Page 8: Eev Module Connection
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. -
Page 9: Connection To An Outdoor Compressor Unit
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. -
Page 10: Connection To Superior I&C Hvac System
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... -
Page 11: Control Diagram - Power Request For Analogue Input (Fig. 4)
“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). directly influence output (change of evaporating temperature in... -
Page 12: Outputs - Information About The Operational Status Of The Equipment
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. -
Page 13: Modbus Communication
4096 Software version Errors according to the device’s self-diagnostics (see the service manual of the ERROR 4097 LG device), (error 99 + Modbus communication error) Refrigerant input temperature to the exchanger +15 °C (blue sensor, smaller TEMP1 4098 diameter) Refrigerant output temperature to the exchanger +15 °C (red sensor, bigger... -
Page 14: Configuration And Communication Check
POWER FUNCTION RESET OFF/ON 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). - Page 15 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.
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Page 16: Introductory Information Sequence
”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). -
Page 17: Inspection Of Inputs / Outputs - Tests
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 –... -
Page 18: Inspection Of Settings During Operation
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. -
Page 19: Warranty Card
Warranty card Equipment specifications Model Product communication box to control outdoor compressor condensation KM113.22MV2 unit LG Electronics. model series “ARUN**” output for bipolar expansion valve control EX5, EX6 Scope of delivery – accessories Serial number communication module KM113.22MV2 power supply (24 VDC), switch, Refrigerant temperature sensor “BLUE”...