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INSTALLATION MANUAL
AHU
COMMUNICATION KIT
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.
PRCKA1
P/NO : MFL50024830
www.lg.com
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Table of Contents
Related Manuals for LG PRCKA1
Summary of Contents for LG PRCKA1
- Page 1 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. PRCKA1 www.lg.com P/NO : MFL50024830...
- Page 2 TIPS FOR SAVING ENERGY TIPS FOR SAVING ENERGY Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your equipment more efficiently by referring to the instructions below: • Do not cool excessively indoors. This may be harmful for your health and may consume more electricity.
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Page 3: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE. Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product. WARNING It can result in serious injury or death when the directions are ignored. CAUTION It can result in minor injury or product damage when the directions are ignored. - Page 4 IMPORTANT SAFETY INSTRUCTIONS Operation • Do not share the outlet with other appliances. - It will cause an electric shock or a fire due to heat generation. • Do not use the damaged power cord. - Otherwise, it may cause a fire or electrical shock. •...
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Page 5: Table Of Contents
Mechanical installation IMPORTANT SAFETY Electric Wiring Work INSTRUCTIONS Electrical Work INSTALLATION SCENE Electric Wiring Work Dry contact connection_optional SUPPLIES accessory FAN Signal Wiring Concept OPTIONAL ACCES- THERMISTORS INSTAL- SORIES LATION PART DESCRIPTION Pipe thermistors Installation Communication Kit (PRCKA1) TROUBLESHOOTING BEFORE INSTALLATION... -
Page 6: Installation Scene
(Heating) Parts and components Name Remarks Air Handling Unit Field supply Outdoor Unit Multi V AHU Communication Kit(PRCKA1) AHU EEV Kit(PRLK048A0/PRLK096A0) Field piping Field supply Wiring connections Power supply and communication Communication Kit Wiring between comm. kit and outdoor unit Pipe thermistors Temp. -
Page 7: Supplies
• 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. MODEL : PRCKA1 www.lg.com P/NO : MFL50024808 Quanti- 2(Each 1) -
Page 8: Optional Accessories
OPTIONAL ACCESSORIES OPTIONAL ACCESSORIES Accessories Components Remote controller Dry contact PQRCVSL0 Model name PQDSBNGCM1 PQRCVSL0QW Shape * For further details of the accessories, refer to the manual provided at the time of purchasing the accessories. -
Page 9: Part Description
PART DESCRIPTION PART DESCRIPTION Communication Kit (PRCKA1) Part Name Quantity(EA) Plastic bolt Control box cover Main PCB Option PCB(36k) Main PCB case Terminal block (communication) Terminal block (POWER Supply) Panel Support Tie wrap Control box case Cable gland(2type) Bracket... -
Page 10: Before Installation
BEFORE INSTALLATION BEFORE INSTALLATION CAUTION • Don't install or operate the unit in rooms mentioned below. ① Where mineral oil, like cutting oil is present. ② Where the air contains high levels of salt such as air near the ocean. ③... - Page 11 BEFORE INSTALLATION CAUTION Selection of Evaporator(Air Handling Unit) See table below for applicable units Selecting the capacity setting 'Option PCB'(Accessory) according to the capacity mentioned below. - The corresponding capacity setting 'Option PCB' needs to be selected depending on the need capacity.
- Page 12 BEFORE INSTALLATION CAUTION • AHU Operation range - For Installation of Room thermistor, always install that to the inlet of Heat Exchanger. Otherwise, it may cause to be not operating properly. - Range of the inlet Air temperature of Heat Exchanger is 18 ~ 40 °C for cooling & 5 ~ 30 °C for heating.
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Page 13: Communication Kit Installation
COMMUNICATION KIT INSTALLATION COMMUNICATION KIT INSTALLATION Mechanical installation . Remove the Communication kit box cover by unscrewing the plastic bolt (4EA). . Drill 4 holes on correct position and fix the Communication kit box securely with 4 screws(Field supply) through the provided holes Ø4.5 mm (Reference the length of the holes Ø4.5) 298 mm Provided holes... -
Page 14: Electric Wiring Work
COMMUNICATION KIT INSTALLATION Electric Wiring Work Circuit diagram Terminal Block No. Connection Function Remark. 220-240 V~ 50 Hz 1(L), 2(N) Power Supply 220 V~ 60 Hz To AHU Fan Signal HI / MID / LOW To Outdoor Unit Communication Line Internet A, B Room Thermistor Pipe In Thermistor... -
Page 15: Electrical Work
COMMUNICATION KIT INSTALLATION Electrical Work Connection of the wires . For connection to outdoor unit and to controller (Field supply) : Pull the wires inside through the cable gland and close that's nut firmly in order to ensure a good pull relieve and water protection. . -
Page 16: Electric Wiring Work
COMMUNICATION KIT INSTALLATION Electric Wiring Work CAUTION • All field supplied parts materials and electric works must be conform to local codes. • Use copper wire only. • All wiring must be performed by an authorized electrician. • A main switch or other means for disconnection, having a contact separation in all poles, must be incorporated in the fixed wiring in accordance with relevant local and national leg- islation. -
Page 17: Dry Contact Connection_Optional
COMMUNICATION KIT INSTALLATION Dry contact connection_optional accessory Dry contact installation location ❈ Applicable dry contact model - PQDSBNGCM1 . Using screw (4EA), fix the dry contact on the side panel. Dry contact PCB CN-_INDOOR CN_PI485 Dry Contact PCB Dry Contact PCB Local controller Signal Field work... -
Page 18: Fan Signal Wiring Concept
COMMUNICATION KIT INSTALLATION FAN Signal Wiring Concept [AHU] Motor Relay Field Wiring Factory Wiring [AHU Comm. Kit] R-HI R-MED R-LOW (MCC Panel ) Control power 220-240 V~ 50 Hz 220 V~ 60 Hz Motor input power Cable : Over CV 1.5 mm 220-240 V~ 50 Hz 220 V~ 60 Hz CAUTION... -
Page 19: Thermistors Installation
THERMISTORS INSTALLATION THERMISTORS INSTALLATION Pipe thermistors Installation Location of the pipe thermistors A correct installation of the thermistors is required to ensure a good operation : Pipe_In(EBG61287703) : Install the thermistor behind the distributor on the coldest pass the heat exchanger (contact your heat exchanger dealer). - Page 20 THERMISTORS INSTALLATION Installation of the pipe thermistor cable Put the thermistor cable in a separate protective tube. Always add a pull-relief to the thermistor cable to avoid strain on the thermistor cable and loosening of the thermistor. Strain on the thermistor cable or loosening of the thermistor may result in bad contact and incorrect temperature measurement.
- Page 21 THERMISTORS INSTALLATION INSTRUCTION • Put the thermistor wire slightly top to above water accumulation on down of the thermis- tor. • For sensing the evaporator’s temp. in thermistor, Put the upper port the thermistors on the evaporator, this is the most sensitive point of the thermistor. Most sensitive point of the thermistor Maximize the contact 45°...
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Page 22: Troubleshooting
TROUBLESHOOTING TROUBLESHOOTING Problem Cause Remedy Check the electrical connection and voltage No power supply of the power supply. Check the electrical connection of the AHU Communication Kit Wiring is wrong Communication Kit (Refer to the circuit dia- does not work gram of the Communication Kit) AHU Communication Kit Check the electrical and mechanical part.