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INSTALLATION MANUAL
AIR
CONDITIONER
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.
Applied(AHU)
Comm.kit
P/NO : MFL69647501
www.lg.com
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Summary of Contents for LG PUCKA0
- 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. Applied(AHU) Comm.kit www.lg.com P/NO : MFL69647501...
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Page 2: Table Of Contents
AHU Control Kit Installation Manual TABLE OF CONTENTS Safety Precautions............3 Installation Scene..............4 Supplies................5 Optional Accessories ............5 Part Description..............6 n Before Installation .............7 n Control Kit Installation............9 Mechanical installation...................9 Electric wiring work .................10-12 Dip switch setting ..................12 Dry contact connection_optional accessory..........13 n Thermistors Installation............14 Pipe thermistors installation..............14-16 Room thermistor...................17... -
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. n 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: Installation Scene
Name Remarks Air Handling Unit Field supply Outdoor Unit Universal AHU Control Kit(PUCKA0) Field supply(Central control Device) Wiring connections Control kit wiring (Power supply and communication between control kit and outdoor unit) Pipe thermistors Evaporator (In/Out) control of Air Handling Unit... -
Page 5: Supplies
Supplies / Optional Accessories Supplies PUCKA0 Capacity setting Panel(Dry contact AHU Control Kit Room thermistor Pipe thermistors Installation manual Components option PCB support) INSTALLATION MANUAL CONDITIONER Shape 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 6: Part Description
Part Description Part Description CN-OPTION Part Name Quantity(EA) Plastic (+) bolt Control box cover Main PCB Option PCB(24k) Main PCB case Terminal block (communication) Terminal block (POWER Supply) Panel Support Tie wrap Control box case Cable gland(2type) Bracket 6 AHU Control Kit... -
Page 7: Before Installation
Before Installation Before Installation CAUTION n 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 8 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.
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Page 9: Control Kit Installation
Control Kit Installation Control Kit Installation Mechanical installation 1. Remove the Control Kit box cover by unscrewing the plastic (+) bolt(4EA). 2. Drill 4 holes on correct position and fix the Control 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 Ø4.5 mm (4EA) -
Page 10: Electric Wiring Work
Control Kit Installation Electric Wiring Work n Circuit diagram 1. For electric wiring, refer to figure 'Circuit diagram' mentioned below. CONNECTOR LOCATION POINT FUNCTION NUMBER CN-POWER AC POWER SUPPLY AC POWER LINE INPUT FOR INDOOR CONTROLLER CN-D/PUMP FIELD WIRING THERMOSTAT ON/OFF SIGNAL CN-MOTOR FAN MOTOR CONTROLLER FAN SPEED CONTROLL OUTPUT... - Page 11 Control Kit Installation Electric Wiring Work n Connection of the wires 2. 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.
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Page 12: Dip Switch Setting
Control Kit Installation Electric Wiring Work CAUTION n All field supplied parts and materials and electric works must be conform to local codes. n Use copper wire only. n All wiring must be performed by an authorized electrician. n 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 legislation. -
Page 13: Dry Contact Connection_Optional Accessory
Control Kit Installation Dry contact connection_optional accessory 1. Using screw(4EA), fix the dry contact on the bracket. h Applicable dry contact model - PQDSBC 2. Using cable, connect the dry contact to main PCB. For more information, please refer to dry contact installation manual. Signal Field work Local controller... -
Page 14: 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 : 1. Pipe_In : Install the thermistor behind the distributor on the coldest pass the heat exchanger (contact your heat exchanger dealer). - Page 15 Thermistors Installation Pipe thermistors Installation Installation of the pipe thermistor cable 1. Put the thermistor cable in a separate protective tube. 2. Always add a pull-relief to the thermistor cable to avoid atrain 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 16 Thermistors Installation Pipe thermistors Installation INSTRUCTION n Put the thermistor wire slightly top to avoid water accumulation on down of the thermistor. n Make good between thermistor and evaporator. Put the top of 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 17: Room Thermistor
Thermistors Installation Room thermistor Installation of the Room thermistor 1. The room thermistor have to be installed in the return air part of the AHU(Field supply) mentioned below. (AHU Control Kit) Thermistor (Air Handling Unit) Installation Manual 17... -
Page 18: Test Operation
Test Operation Test Operation Before test operation, be sure all information is understood completely, and follow the guideline of manual. n Check the refrigerant piping of outdoor unit. (Additional charging of the refrigerant ,the maximum allowed piping length and open the stop valve) * For more detailed information of that, refer to the installation manual supplied with the outdoor unit. -
Page 19: Troubleshooting
Troubleshooting Troubleshooting Problem Cause Remedy No power supply Check the electrical connection and voltage of the power supply. AHU Control Kit Wiring is wrong Check the electrical connection of the Control kit does not work (Refer to the circuit diagram of the Control Kit) AHU Control Kit is broken Check the electrical and mechanical part. - Page 20 20 AHU Control Kit...
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