LG KUSXA121A Quick Installation Manual

R32 single zone multi-position air handling unit

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R32 SINGLE ZONE

MULTI-POSITION AIR

HANDLING UNIT

QUICK INSTALLATION GUIDE

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Summary of Contents for LG KUSXA121A

Page 1 R32 SINGLE ZONE MULTI-POSITION AIR HANDLING UNIT QUICK INSTALLATION GUIDE...
Page 2 For continual product development, LG Electronics U.S.A., Inc., reserves the right to change specifications without notice. © LG Electronics U.S.A., Inc. This document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A., Inc.
Page 3 Drain Shutoff Switch Wiring �� 29-30 Limited Warranty �� 31 Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 4 R32 Refrigerant LG Electronic split system heating and air conditioning (HVAC) products now contain R32 refrigerant. While R32 refrigerant is slightly flammable, it has a higher efficiency, a lower Global Warming Potential (GWP) value, and is more environmentally friendly than R410A.
Page 5 KUSXB421A KNSLB421A KUSXB481A KNSLB481A KUSXB601A KNSLB601A Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 6 Bottom Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 7 Refer to the table below for piping requirements and limitations. Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 8 • When reusing existing refrigerant pipes, it is recommended to install filter drier to provide the system additional protection. Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 9 • A refrigerant piping flush must be performed when replacing R410A system with R32 system. Use industry standard flushing practices and a compatible flush kit. Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 10 KNSLB421A KUSXA482A 32.0 10 AWG KNSLB481A Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 11 • Ring connectors are used when connecting the wire to the terminal block to ensure contact is properly made between the wire and the terminal. • Continuity of the existing wire has been verified. • If existing wire has been used and site communication errors occur, LG recommends pulling new 18/2 stranded shielded wire to correct any issues. Connecting an LG Controller Refer to the diagram below for LG controller wiring.
Page 12 CONTROLLERS LG Controller Types Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 13 LG Standard (PREMTB101) – Password is software version LG CRC2 Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 14 • Note that PDRYC320 accessory is required. Voltage Setting Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 15 Heat Pump “B” Terminal Enable (Low/High only) Enable Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 16 Wiring Diagram (when using Third Party Controller) Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 17 • SW5 OFF: Fan discontinuous operation.There could be reduction in heating capacity. Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 18 The setting change is enabled only when Power is reset. Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 19 Image shown above may vary depending on model capacity. For additional information, refer to the Electric Heater Manual. If a Third-Party Dry Contact and an LG internal heater or an LG Auxiliary Heat Kit is installed, supplemental heat capability cannot be controlled by the Third-PartyThermostat.
Page 20 R32 (WH,4P) CN_EEV (WH,6P) CN_MOTOR1 (WH,7P) Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 21 <Front View> <Right View> <Front View> <Right View> Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 22 Control box (2 screws) CN_OUT wire Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 23 Step 9: Lastly reinstall control box panel and front cover. Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 24 • ON : Auto mode • OFF : Manual mode Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 25 AUXILIARY ELECTRIC HEATER CONFIGURATION LG Controllers Emergency Heat Configuration Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 26 W1 and W2 calls need to be configured according to the chosen thermostat. Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 27 The values in the table shown below are from 000 – 255 and are adjusted in the LG remote controller. • LG controller is required to make static pressure adjustments. The controller can be plugged in to make the necessary adjustments and then removed when using the third party controller.
Page 28 EXTERNAL STATIC PRESSURE (ESP) ESP Setting (FCO3) • LG controller is required to make static pressure adjustments. The controller can be plugged in to make the necessary adjustments and then removed when using the third party controller. • Power must be cycled if an LG remote is used to make settings changes and then removed.
Page 29 LG Controller Configuration and Error Display Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 30 Drain Shutoff Switch Wiring (When Using Third Party 24V Controllers) Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 31 “The product’s full Limited Warranty terms and conditions and arbitration requirements are available at https://www.lghvac.com." Due to our policy of continuous product innovation, some specifications may change without notification. © LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
Page 32 LG Electronics, U.S.A., Inc. Air Conditioning Technologies 4300 North Point Parkway NEW ISSUE: IN_SZ_MPAHU_R32_07_25 Alpharetta, Georgia 30022 www.lghvac.com...

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