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LG
AHU CONTROL KIT
Installation Manual
Models: PRCKD20E
PRCKD40E
Visit us at : http://www.lgservice.com
IMPORTANT
• Please read this installation manual completely
before installing the product.
• Installation work must be performed in
accordance with the national wiring standards
by authorized personnel only.
• Please retain this installation manual for future
reference after reading it thoroughly.
LG

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   Summary of Contents for LG PRCKD40E

  • Page 1

    Visit us at : http://www.lgservice.com AHU CONTROL KIT Installation Manual Models: PRCKD20E PRCKD40E IMPORTANT • Please read this installation manual completely before installing the product. • Installation work must be performed in accordance with the national wiring standards by authorized personnel only.

  • Page 2: Table Of Contents

    AHU CONTROL KIT Installation Manual TABLE OF CONTENTS Safety Precautions ................3 Installation configuration ..............5 Supplies ....................6 Wiring diagram ..................9 Installation flowchart ................13 CONTROL KIT Installation..............14 Pipe temperature sensor connection ..........16 Outdoor communication cable connection .........17 Precaution ..................18 AHU sensor specification ..............20 AHU sensor connection ..............21 AHU controller setting ................27 Communication PCB setting ..............32...

  • Page 3: Safety Precautions

    Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. WARNING This symbol indicates the possibility of death or serious injury.

  • Page 4

    Safety Precautions I Operation Make sure that water does When the air conditioner is Do not keep any heating not get inside the product submersed in water, always devices near the product. (Controller). Especially, do consult MULTI not clean the product with installation service provider.

  • Page 5: Installation Configuration

    0V/ 60H 60Hz/ 1P 1PHASE Installation components Name Remarks Air Handling Unit CONTROL KIT PRCKD20E / PRCKD40E EXPANSION KIT PATX13A0E/20A0E/25A0E/35A0E Outdoor unit Multi V Pipe temperature sensor IN Sensor: Ø5, Length: 5m,Cable color: Black Pipe temperature sensor OUT Sensor: Ø7, Length: 5m, Cable color: Red Temperature sensor RA -50~50°C/ AC 24V / DC 0~10V...

  • Page 6: Supplies

    Supplies Supplies Basic parts supplied Wired remote Installation CONTROL KIT Installation bolt/nut User manual controller manual Installation User manual manual Model name 온도조절 운전/정지 - Quantity: 1EA - Maximum number of PRCKD20E outdoor units that - Quantity: 1EA can be connected: - Bolt quantity: 4EA - Quantity: 4EA Specification:...

  • Page 7

    2(4) Capacity: 100VA 15A * 1.25mm Communication PCB case 2(4) Terminal block #1 Terminal block #2 20A * 1.25mm Control box 1.6T Wiring circuit breaker * ( ) refers to the quantity applied to the PRCKD40E model. Installation Manual 7...

  • Page 8

    Supplies 4-Ø12 Hole (Side) (Front) (Rear) (Floor) PRCKD20E / PRCKD40E Remarks A (mm) Length B (mm) Height C (mm) Width D (mm) Hole connecting to AHU E (mm) 4-Ø16 Hole Pipe sensor connector 10-Ø25 Hole Sensor/Communication cable connector Ø30 Hole...

  • Page 9: Wiring Diagram

    Wiring diagram Part diagram PRCKD40E AHU controller part AHU controller part Safety part Safety part Terminal block part #2 Terminal block part #2 Terminal block part #1 Terminal block part #1 (Inside product) I Communication PCB #1 part is not attached to the PRCKD20E model.

  • Page 10

    Wiring diagram AHU controller part Communication PCB part (PRCKD20E) 10 AHU CONTROL KIT...

  • Page 11

    Wiring diagram Communication PCB part (PRCKD40E) Safety part (Transformer, wiring circuit breaker) Installation Manual 11...

  • Page 12

    Wiring diagram Terminal block part #1 Terminal block part #2 12 AHU CONTROL KIT...

  • Page 13: Installation Flowchart

    Installation flowchart Installation flowchart CONTROL KIT installation Pipe temperature sensor connection • Because 2 Outdoor units can be connected to 1 communication PCB, be careful not to get the pipe temperature sensor and communication cable connection to 1 Outdoor unit mixed and connected. Outdoor unit communication cable connection •...

  • Page 14: Control Kit Installation

    CONTROL KIT Installation CONTROL KIT Installation Product installation location check 1. Check the location to install CONTROL KIT from the AHU product. Detail 4-Ø12 Hole <AHU> Installation location (Factory condition) 2. Check location of the hole on the rear side of CONTROL KIT and check whether accessories exist for the installation.

  • Page 15

    CONTROL KIT Installation Product installation 1. Align the fixating hole on the side of AHU with the hole on the kit, and tighten the holes using the bolt and nut included. <Installation complete> CAUTION I Do not install the product by yourself. I After installing the product, check whether it is fixed well.

  • Page 16: Pipe Temperature Sensor Connection

    Pipe temperature sensor connection Pipe temperature sensor connection Pipe temperature sensor connection 1. Check the IN/OUT of the pipe temperature sensor connected to EXPANSION KIT. EXPANSION KIT • Pipe temperature sensor IN: Sensor Ø5, Length 5m, Cable color Black (PATX13A0E/20A0E/25A0E/35A0E) •...

  • Page 17: Outdoor Communication Cable Connection

    Outdoor communication cable connection Outdoor communication cable connection Communication cable connection 1. Communication cable specification (Between Outdoor unit and CONTROL KIT) • Type: 2 shielded wires • Insulation material: PVC • Maximum possible distance : 1000m or less • Diameter: CV 1.25mm or above •...

  • Page 18: Precaution

    Precaution Precaution Pipe temperature sensor connection • Because 1 communication PCB can be connected to 2 EXPANSION KIT and Outdoor units, be careful not to mix the pipe temperature sensor and communication cable. Outdoor unit #1 Outdoor unit #2 Pipe Example) Communication cable Pipe sensor...

  • Page 19

    Precaution Outdoor unit communication cable connection • If the power cable and the communication cable are connected in parallel, it can cause malfunction to the system by signal interference from combined effect from static electric and electronic system. When the communication cable is installed with the indoor unit power cable, clearance of at least 50mm must be secured between the two.

  • Page 20: Ahu Sensor Specification

    AHU sensor specification AHU sensor specification Sensor/Load specification • The AHU applied sensor must comply with the following specification table. Item Specification Remarks - Power : AC 24V - Input signal : DC 0~10V - Torque : 15Nm Damper actuator - Operating time : 150 seconds - Rotating angle : 90°...

  • Page 21: Ahu Sensor Connection

    AHU sensor connection AHU sensor connection Sensor/Load wiring 1. Damper actuator (Optional) Item Specification Remarks - Power : AC 24V - Input signal : DC 0~10V Optional - Torque : 15Nm Damper actuator - Operating time : 150 seconds - Rotating angle : 90° Example) OA damper actuator wiring DC 0~10V Ground...

  • Page 22

    AHU sensor connection 2. Temperature/Humidity sensor (Optional) Item Specification Remarks - Power : AC 24V - Output signal : DC 0~10V Optional Temperature/Humidity sensor - Temperature range : -40~70°C - Humidity range : 0~95%RH Example) OA Temperature/Humidity sensor wiring DC 0~10V(Humidity) DC 0~10V(Temperature) Ground AC 24V...

  • Page 23

    AHU sensor connection 3. Temperature sensor (Mandatory) Item Specification Remarks - Power : AC 24V Mandatory - Output signal : DC 0~10V Temperature sensor - Temperature range : -50~50°C Example) SA temperature sensor wiring DC 0~10V Ground AC24V Inside CONTROL KIT 1.

  • Page 24

    AHU sensor connection 4. Filter differential pressure sensor (Optional) Item Specification Remarks - Power : AC 24V Optional - Output signal : DC 0~10V Filter differential pressure sensor - 0~1,000 Pa Example) Filter differential pressure sensor wiring DC 0~10V Ground AC24V Inside CONTROL KIT 1.

  • Page 25

    AHU sensor connection 5. CO2 sensor (Optional) Item Specification Remarks - Power : AC 24V Optional - Output signal : DC 0~10V sensor - 0~2,000 ppm Example) CO sensor wiring DC 0~10V Ground AC24V Inside CONTROL KIT 1. For details on installation of CO sensor, refer to the manual included with the CO sensor when purchased.

  • Page 26

    AHU sensor connection 6. Smoke detector sensor (Optional) Item Specification Remarks - Power : AC 24V Optional Smoke detector sensor - Type: Contact point type Example) Smoke detector sensor wiring AC 24V (+) No power contact point (-) Inside CONTROL KIT 1.

  • Page 27: Ahu Controller Setting

    AHU controller setting AHU controller setting Rotary switch setting • Set Rotary switch depending on the type of heat source applied to AHU. Inside CONTROL KIT Rotary switch setting Factor delivery condition Rotary switch Rotary switch Applied heat source Possible operating Rotary Outdoor unit switch...

  • Page 28: Dip Switch Setting

    AHU controller setting 2. Dip switch setting Switch name Function Cooling/Heating AHU type (1) 100% Fresh Air type ON: Dehumidifier/Auto ventilator disabled type OA temperature/humidity sensor (Installed) (Not installed) OFF: Dehumidifier/Power save disabled Mixing temperature sensor (Installed) (Not installed) Heating is disabled for air conditioning/heating RA temperature/humidity sensor (Installed) Temperature sensor...

  • Page 29

    AHU controller setting 3. Dip switch setting switch setting - RA: Temperature/ -RA: Temperature Humidity sensor - RA: Temperature - RA: Temperature/ sensor Applied sensor Humidity sensor - SA: Temperature/ CO2 sensor sensor Humidity sensor - SA: Temperature - SA: Temperature/ - SA: Temperature sensor Humidity sensor...

  • Page 30

    AHU controller setting switch setting - RA: Temperature sensor - RA: Temperature sensor - RA: Temperature sensor - RA: Temperature/ - SA: Temperature sensor - SA: Temperature sensor Humidity sensor - SA: Temperature sensor Applied - Mixing: Temperature - Mixing: Temperature - SA: Temperature sensor - Filter front/rear: Filter sensor...

  • Page 31

    AHU controller setting switch setting - RA: Temperature sensor - RA: Temperature sensor - RA: Temperature sensor Applied Smoke detector sensor Smoke detector sensor Smoke detector sensor sensor - SA: Temperature sensor - SA: Temperature sensor - SA: Temperature sensor (Main function) (Main function) (Main function)

  • Page 32: Communication Pcb Setting

    Communication PCB setting Communication PCB setting Rotary/Dip switch setting Inside CONTROL KIT Outdoor unit Outdoor unit communication cable #2 communication cable #1 Rotary switch #2 Rotary switch #1 Pipe temperature sensor #2 IN Pipe temperature sensor #1 OUT Pipe temperature sensor #1 IN Pipe temperature sensor #2 OUT (Communication PCB) •...

  • Page 33

    Communication PCB setting Rotary/Dip switch setting example • Example of Rotary/Dip switch setting of communication cable when connecting 3 Outdoor units Installation summary diagram Refrigerant pipe EXPANSION (AHU) CONTROL KIT Communication cable (Outdoor unit) Communication PCB Rotary/Dip switch setting Outdoor unit Dip switch Rotary switch 1 2 3 4...

  • Page 34: Electric Wiring Work

    Electric wiring work Electric wiring work Electric wiring Ex) Electric wiring Motor Electricity leakage circuit breaker Magnetic connector Site wiring Factory wiring MC(RA) MC(SA) E(RA) E(SA) Control power 1Ø, 220~240V, 50/60Hz, CV of 1.5mm Motor operating power 3Ø, 4 lines, 50/60Hz Select and use the standard product (Power cable/Circuit breaker/Magnetic contactor) 34 AHU CONTROL KIT...

  • Page 35

    Electric wiring work Caution 1. For the regulation related to electric equipment and wiring, follow the regulation of technical standard of the government organization and the guideline of the electric power supplier. WARNING I For the electric work that requires special circuits according to the general regulation and this installation manual, always make sure it is done by a qualified technician.

  • Page 36: Test Run

    Test run Test run Checkpoint before the test run 1. Set the operating mode of the wired remote controller of CONTROL KIT to ‘Fan’ and run for 2~3 seconds to check whether the rotating direction of the AHU SA and RA fan is the same as that indicated on the fan.

  • Page 37

    Test run 3. After connecting the power to CONTROL KIT, check whether the 7 segment of AHU controller displays as shown in the following order. When ‘6’ is displayed on the 7 segment, the unit can be operated. 4. After the power is connected, it requires about 10~15 minutes from system initialization to the operation standby stage.

  • Page 38

    Test run Wired remote controller 1. Operation display panel 10. Indoor temperature button 2. Temperature control button 11. Reset button 3. Wireless remote controller receiver 12. Fan level button (Not applied in AHU) - Wireless remote control signal is not 13.

  • Page 39

    Test run How to install the wired remote controller 1. As shown in the right, connect the remote control cable to the installation board of the wired remote controller. BUS_B BUS_A * Remote control cable must separately be purchased on site. Remote control cable BUS A BUS B GND 12V B GND 12V...

  • Page 40

    Test run 4. After fixating the top part of the remote controller to the wired remote controller installation board, press the bottom part to assemble to the board. When separating the remote controller from the board, use the driver as shown in the right picture to insert the driver into the hole marked with the arrow and pull the driver to separate the remote controller.

  • Page 41

    Test run Self diagnosis function Error display • This function displays the self diagnosis and the type of error if identified. • For the error display, the applicable code is displayed on the 7 segment LED on the wired remote controller and AHU controller. •...

  • Page 42

    Test run Error display (AHU) • ‘##’ refers to the address information of the communication PCB. Display number Error item Cause of error Cause or error Temperature sensor error at Communication PCB Temperature sensor disconnection or short circuit at pipe inlet of indoor unit Rotary switch number ## pipe inlet of indoor unit Communication error between...

  • Page 43

    Test run Sequence of error ❈ The occurrence of error is displays in the order of ➔ ➔ on 7 segment. ❈ Refer to page 42 for details of I Refer to the MULTI V technical material for details on error code and checkpoints of the outdoor unit.

  • Page 44

    P/No.: MFL62049604 Printed in Korea After reading this manual, keep it in a place easily accessible to the user for future reference.

This manual also for:

Prckd20e

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