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Related Manuals for LG KM113.27UU
Summary of Contents for LG KM113.27UU
- Page 1 INSTALLATION MANUAL Safety regulations Installation Operation KM113.27UU 2xRS485 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 „UU**“ Version 2020/07/23 2020/07/23 page 1...
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Page 2: Table Of Contents
Installation – connection of refrigerant temperature sensors (fig. 3.1 - 3.4) Connection to an outdoor compressor unit - power supply, communication Connection diagram of KM113.27UU to an outdoor compression unit (fig. 4) Connection to an outdoor compression unit – power limitation module Connection diagram of MOV-UU to an outdoor compression unit and KM113.27UU (fig. -
Page 3: Safety
Power input Maximum 5 W 12 V DC ±10 %/max. 120 mA, The supply must be Power supply of separate module KM113.27UU separated by double insulation (SELV) Two wires at the low voltage system (connected with Communication with outdoor unit 230VAC) Recommended cable JQTQ 2x0.8... -
Page 4: Description Of Application
HVAC equipment. 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. -
Page 5: Permitted Capacity Of The Heat Exchanger In The Hvac Equipment
(temperature) usually changes only in a relatively narrow range. If the technical solution requires changing the evaporating/condensing pressure (temperature), it is NECESSARY to use a combination of the KM113.27UU communication module with the MOV-UU power limitation module and the corresponding compressor unit that allows this control. -
Page 6: Application Overview Diagram Km113.27Uu (Fig. 1)
Fig.1 – Application overview diagram KM113.27UU – COMPRESSOR UNIT UU** - HVAC – SYSTEM I&C APPLICATION OVERVIEW DIAGRAM KM113.27UU-UU** - HVAC - I&C Communication KM113.27UU-UU** Communication MODBUS I&C Communication - I/O I&C Communication KM113.27UU-MOV-UU I&C system Power supply KM113.27UU-UU** Air inlet... -
Page 7: Installation - Connection To The Air-Conditioning System
UV radiation (shaded area). In this case, we recommend using a box with increased UV resistance (KM113.27UU-UV). Preparation: Remove the front cover from the installation box – loosen the 4 threaded locks at the cover corners. -
Page 8: Connection To An Outdoor Compressor Unit - Power Supply, Communication
“supply” terminals in the communication box (terminal source “230 VAC” - “L, N”). Connect suitable (shielded) communication cable between the outdoor compressor unit (see the diagram of the used unit – usually terminals “N“ and “SIG“) and terminals “TO OUTDOOR UNIT” of the KM113.27UU (terminals 2+3). -
Page 9: Connection Diagram Of Km113.27Uu To An Outdoor Compression Unit (Fig. 4)
Fig.4 - Connection diagram of KM113.27UU to an outdoor compression unit (POWER SUPPLY + COMMUNICATION) COMMUNICATION (3), N (2) POWER SUPPLY: L (1), N (2) 4.4 Connection to an outdoor compression unit – power limitation module power limitation function (evaporative... -
Page 10: 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 (only KM113.27UU) 2/ request on capacity through the use of 0…10V signal 3/ request on capacity through the use of contact inputs (3 max) -
Page 11: Control Diagram - Power Request For Analogue Input (Fig. 6)
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 13+14), 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”... -
Page 12: Logic Input Control Diagram (Fig. 7)
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: Control / Communication Modbus (Fig. 8)
4096 Software version Errors according to the device’s self-diagnostics (see the service manual ERROR 4097 of the LG device), (error 99 + Modbus communication error) Refrigerant input temperature to the exchanger +15 °C (blue sensor, TEMP1 4098 smaller diameter) Refrigerant output temperature to the exchanger +15 °C (red sensor,... -
Page 14: Configuration And Connection Check
POWER FUNCTION RESET OFF/ON 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 1 minute. -
Page 15: Introductory Information Sequence
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. -
Page 16: Inspection Of Settings During Operation
1. Hold the SETTINGS button for approx. 5 s. The display shows the set power code in kW. 2. 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. 2020/07/23... -
Page 17: Warranty Card
Warranty card Equipment specifications Product Model communication box to control outdoor compressor KM113.27UU condensation unit LG Electronics. model series “UU**„ Scope of delivery – accessories Serial number Communication module Power supply (12VDC), switch, Refrigerant temperature sensor “BLUE” (TEMP1) Refrigerant temperature sensor “Red” (TEMP2)