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LG PAHCMS000 Installation Manual

Air handler unit communications kit.
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INSTALLATION MANUAL
FOR LG AIR HANDLER UNIT (AHU)
COMMUNICATIONS KIT
AHU Model Number: PAHCMS000

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Table of Contents

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   Summary of Contents for LG PAHCMS000

  • Page 1 INSTALLATION MANUAL FOR LG AIR HANDLER UNIT (AHU) COMMUNICATIONS KIT AHU Model Number: PAHCMS000...
  • Page 2 3. For more materials such as submittals, catalogs, engineering, installation, owner’s, and service manuals, visit www.lghvac.com. For continual product development, LG Electronics U.S.A., Inc. reserves the right to change specifications without notice. © LG Electronics U.S.A., Inc.
  • Page 3: Table Of Contents

    PRLK396A0 Wiring ����������������������������������������������������������������������������������������������������������������������������������������������������������������������52 Control Functions ������������������������������������������������������������������������������������������������������������������������������������������������������������������������53 Testing ......................................57 Troubleshooting ....................................58 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: Safety Precautions

    There is risk of product malfunction� 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 5 Failure to carefully read and follow all instructions in this manual can result in equipment malfunction or property damage� 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 If the product falls, there is risk of product damage� 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: Ahu Kit Introduction

    PAHCMS000 AHU Communications Kit features are: • It can be used with LG Multi V air or water source outdoor units and LG Single Zone outdoor units. • It supports AHU coil capacities from 12 - 594 kBtu/h.
  • Page 8: Specifications, Components List

    (One [1] Pipe In, One [1] Pipe Out) 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: Ahu Communications Kit Installation

    50~100% of the air-source / water-source heat pump. 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: Dip Switch Settings

    1. Function of defrost operation type can be applied only to Multi V outdoor units (after MULTI V 5 model). 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 1. Do not change the settings of reserved switches. Changing these settings can result in equipment malfunction. 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 12 2. If connecting the PRLK396A0 EEV kit to a Multi V outdoor unit, set DIP switches 1, 2, 3, and 4 to ON to set capacity to 192 kBtu/h. 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: Ahu Communications Kit Parts

    Bracket One (1) Panel Assembly, Control Three (3) 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: Ahu Communications Kit Mounting

    Model PAHCMS000 14 31/32 6-3/32 11-13/16 13-2/5 10-1/4 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 Wiring Diagram Figure 7: AHU Communications Kit Wiring Diagram 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 Normal status : short Error status : open 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 2. UI is available when Dip SW1-1 is Off 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: Power Wiring

    Front View with Cover Open Power Terminal Block Cable Insert 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: Communications Wiring

    • Multi V IDU (RS485 Ch2) Cable Insert 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 20: Controller Settings

    Note : Maintain previous value when getting intermediate value to UI4 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 Fan mode operation control Short Short Non voltage 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 250VAC / 3A Fan_Stop O ‘ S ’ 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 ) s r 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: Solutions Overview

    1. LG Central controller is based on AC Smart IV and ACP IV 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 1. LG central controller is based on AC Smart IV and ACP IV 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 1. LG Central controller is based on AC Smart IV and ACP IV 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: Main Module Settings

    Please contact your LG representative to design an AHU heat exchanger. 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 28 Please contact local sale person to design AHU heat exchanger. 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 29 Please contact your LG representative to design an AHU heat exchanger. 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 Main Module Address Setting An address for the main module is needed when PAHCMS000 is connected to an LG central controller The address of main module can be set within ‘1~247’. In this case, the address of the main module should be the same as the address in LG central controller.
  • Page 31: Communication Module

    EEV Control Note : When a communication module(or PAHCMR000) is connected to the main module of PAHCMS000, DO and UI in communication module are not used. Due to our policy of continuous product innovation, some specifications may change without notification.
  • Page 32: Defrost Setting

    (Sequential Start up is not operated in case of cooling operation) Example ODU Startup Control 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 33: External Connection Diagrams

    3. LG controller can be optionally applied with DDC. 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 34 3. LG controller can be optionally applied with DDC. 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 35 3. LG controller can be optionally applied with DDC. 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 36 3. LG controller can be optionally applied with DDC. 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 37: Discharge Air Temperature Controller

    Remote controller connected to PAHCMR000 can only monitor status. 2. LG Central controller addressing for discharge air temp. controller should be set to the same address as the main module’s address. 3. Address of Comm. module of PAHCMS000 (Central control address) must be set to ‘00’. The address for additional PAHCMR000 must be set with an order increasing by 1.
  • Page 38 Remote controller connected to PAHCMR000 can only monitor status. 2. LG Central controller addressing for discharge air temp. controller should be set to the same address as the main module’s address. 3. Address of Comm. module of PAHCMS000 (Central control address) must be set to ‘00’. The address for additional PAHCMR000 must be set with an order increasing by 1.
  • Page 39 Remote controller connected to PAHCMR000 can only monitor status. 2. LG Central controller addressing for discharge air temp. controller should be set to the same address as the main module’s address. 3. Address of Comm. module of PAHCMS000 (Central control address) must be set to ‘00’. The address for additional PAHCMR000 must be set with an order increasing by 1.
  • Page 40 Remote controller connected to PAHCMR000 can only monitor status. 2. LG Central controller addressing for discharge air temp. controller should be set to the same address as the main module’s address. 3. Address of Comm. module of PAHCMS000 (Central control address) must be set to ‘00’. The address for additional PAHCMR000 must be set with an order increasing by 1.
  • Page 41 Remote controller connected to PAHCMR000 can only monitor status. 2. LG Central controller addressing for discharge air temp. controller should be set to the same address as the main module’s address. 3. Address of Comm. module of PAHCMS000 (Central control address) must be set to ‘00’. The address for additional PAHCMR000 must be set with an order increasing by 1.
  • Page 42 1. Remote controllershouldbeconnected toPAHCMS000. Remote controller connected to PAHCMR000 can only monitor status. 2. LG Central controller addressing for discharge air temp. controller should be set to the same address as the main module’s address. 3. Address of Comm. module of PAHCMS000 (Central control address) must be set to ‘00’. The address for additional PAHCMR000 must be set with an order increasing by 1.
  • Page 43 Thermistors must be securely attached for proper operation� 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 44 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 45: Eev Kit Installation

    Introduction Figure 16: EEV Kit. When used with the LG AHU Communications Kit (sold separately), the LG EEV Kit controls refrigerant flow between LG Multi V air-source or water-source units and a third-party air handler unit (AHU). The EEV Kits for PAHCMS000 are offered in four sizes: •...
  • Page 46: Eev Kit Parts

    One (1) Bracket Two (2) Panel, Base One (1) 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 47 One (1) Bracket Two (2) Panel, Base One (1) 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 48: Mounting The Eev Kit

    1/4” Pipe diameter 5/8” Pipe diameter 5/8” 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 49: Preparing The Pipes

    Failure to properly insulate the pipe after welding may result in leakage. 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 50: Brazing And Insulating The Piping

    (4) M4 screws. Liner 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 51: Prlk048a0 And Prlk096a0 Wiring

    PCB diagram for the AHU Communications Kit� If the wiring is incorrect, the products will malfunction� 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 52: Prlk396a0 Wiring

    YL : Yellow BL : Blue WH : White 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 53: Control Functions

    5. Refer to the product manual of the remote 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 54 2. PI485GW is required for Single Zone application. 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 55 ODU#4 Error Status ● 0: Normal / 1: Error 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 56 2. Error Code: 1 x xxx Error Code Module Number 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 57: Testing

    • Buttons 3, 4, 11, 12 on the wired remote controller do not operate� 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 58: Troubleshooting

    Pipe out thermistor has disconnected from AHU, or has short CH06 Pipe Out Thermistor Error circuited. 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 59 Contact your LG representative if you have any questions about the AHU Communications Kit or its installation.
  • Page 60 LG Customer Information Center, Commercial Products 1-888-865-3026 USA LG Electronics, U.S.A., Inc. Follow the prompts for commercial A/C products. Commercial Air Conditioning Division 4300 North Point Parkway Alpharetta, Georgia 30022 www.lg-vrf.com IM_AHU_Comm_Kit_PAHCMS000_8_18...

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