LG | PRCKA1.ENCXLEU | LG PRCKA1.ENCXLEU Owner’s Manual

ENGLISH
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.
MODEL : PRCKA1
www.lg.com
P/NO : MFL50024808
2
TIPS FOR SAVING ENERGY
ENGLISH
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.
• Block sunlight with blinds or curtains while you are operating the equipment.
• Keep doors or windows closed tightly while you are operating the equipment.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period of time.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
IMPORTANT SAFETY INSTRUCTIONS
3
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.
! WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• Installation must conform with local building codes or, in the absence of local codes.
• The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.
Installation
• Always perform grounding.
- Otherwise, it may cause electrical shock.
• Don’t use a power cord, a plug or a loose socket that is damaged.
- Otherwise, it may cause fire or electrical shock.
• For installation of the product, always contact the service center or a professional installation
agency.
- Otherwise, it may cause fire, electrical shock, explosion or injury.
• Securely attach the electrical part cover to AHU Comm. Kit.
- If the electric part cover of AHU Comm. Kit is not attached securely, it could result in a fire or
electric shock due to dust, water, etc.
• Always install an air leakage breaker and a dedicated switching board.
- No installation may cause a fire and electrical shock.
• Do not keep or use flammable gases or combustibles near the equipment.
- Otherwise, it may cause a fire or the failure of product.
• Do not install, remove or reinstall the unit by yourself.
- Otherwise, it may cause a fire, electrical shock, explosion or injury.
• Do not disassemble or repair the product randomly.
- It will cause a fire or electrical shock.
• Do not install the product in a place where there is the concern of falling down.
- Otherwise, it may result in personal injury.
• Use caution when unpacking and installing.
- Sharp edges may cause injury.
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
4
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
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.
• Do not modify or extend the power cord randomly.
- Otherwise, it may cause a fire or electrical shock.
• Take care so that the power cord may not be pulled during operation.
- Otherwise, it may cause a fire or electrical shock.
• Unplug the unit if strange sounds, smell, or smoke comes from it.
- Otherwise, it may cause electrical shock or a fire.
• Keep flames away.
- Otherwise, may occur a fire.
• Take the power plug out if necessary, holding the head of the plug and do not touch it with
wet hands.
- Otherwise, it may cause a fire or electrical shock.
• Do not use the power cord near the heating tools.
- Otherwise, it may cause a fire and electrical shock.
• Do not allow water to run into electrical parts.
- Otherwise, it may cause the failure of machine or electrical shock.
• Hold the plug by the head when taking it out.
- It may cause electric shock and damage.
• Be cautious that water could not enter the product.
- Otherwise, it may cause a fire electrical shock or product damage.
• Do not step on the indoor/outdoor unit and do not put anything on it.
- It may cause an injury through dropping of the unit or falling down.
• Do not place a heavy object on the power cord.
- Otherwise, it may cause a fire or electrical shock.
• When the product is submerged into water, always contact the service center.
- Otherwise, it may cause a fire or electrical shock.
TABLE OF CONTENTS
ENGLISH
TABLE OF CONTENTS
2
TIPS FOR SAVING
ENERGY
13 COMMUNICATION KIT
IMPORTANT SAFETY
INSTRUCTIONS
13
Mechanical installation
14
Electric Wiring Work
15
Electrical Work
6
INSTALLATION SCENE
16
Electric Wiring Work
7
SUPPLIES
17
Dry contact connection_optional
accessory
8
OPTIONAL ACCESSORIES
18
FAN Signal Wiring Concept
3
9
PART DESCRIPTION
9
Communication Kit (PRCKA1)
10 BEFORE INSTALLATION
5
INSTALLATION
19 THERMISTORS INSTALLATION
19
Pipe thermistors Installation
22 TROUBLESHOOTING
6
INSTALLATION SCENE
ENGLISH
INSTALLATION SCENE
Signal
Pipe
Thermistor
Air flow
9
10
3
Refrigerant flow
(Cooling)
Refrigerant flow
(Heating)
7
6
8
4
2
1
5
Parts and components
No.
1
2
3
4
5
Name
Air Handling Unit
Outdoor Unit
AHU Communication Kit(PRCKA1)
AHU EEV Kit(PRLK048A0/PRLK096A0)
Field piping
Remarks
Field supply
Multi V
Field supply
Wiring connections
6
Communication Kit Wiring
Power supply and communication
between comm. kit and outdoor unit
7
Pipe thermistors
(EBG61287703/EBG61287704)
Temp. sensing for refrigerant pipe
8
Room thermistor (EBG36949303)
Temp. sensing for room temp.
9
Remote controller(PQRCVSL0
/ PQRCVSL0QW)
Optional accessory
10
Dry contact(PQDSBNGCM1)
Optional accessory
! CAUTION
For Installation of Room thermistor (No. 8), always install that to the inlet of Heat Exchanger.
Otherwise, it may cause to be not operating properly.
SUPPLIES
7
ENGLISH
SUPPLIES
PRCKA1
Compo- AHU Comm.
nents
Kit
P/NO
Room
thermistor
Pipe
thermistors
AJT57850904 EBG61106821
Installation
Manual
Bracket
Option PCB
EBG61287703(In)
EBR52358907
MFL50024808 MAZ49398901
EBG61287704(Out)
~17
ENGLISH
Shape
H
INSTALLATION MANUAL
AHU COMMUNICATION KIT
W
D
• 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.
MODEL : PRCKA1
www.lg.com
P/NO : MFL50024808
Quantity(EA)
1
1
2(Each 1)
Weight (kg)
Model
Name
PRCKA1
2.7
4
11(Each 1)
Dimension (mm)
NET
NET
1
Gross
POWER
Gross
4.0
W
H
D
W
H
D
280
135
280
420
179
394
220-240 V~ 50 Hz
220 V~ 60 Hz
8
OPTIONAL ACCESSORIES
ENGLISH
OPTIONAL ACCESSORIES
Accessories
Components
Remote controller
Dry contact
Model name
PQRCVSL0
PQRCVSL0QW
PQDSBNGCM1
Shape
* For further details of the accessories, refer to the manual provided at the time of purchasing
the accessories.
PART DESCRIPTION
ENGLISH
PART DESCRIPTION
Communication Kit (PRCKA1)
1
2
3
4
5
6
7
9
8
10
12
11
No.
9
Part Name
Quantity(EA)
1
Plastic bolt
4
2
Control box cover
1
3
Main PCB
1
4
Option PCB(36k)
1
5
Main PCB case
1
6
Terminal block (communication)
1
7
Terminal block (POWER Supply)
1
8
Panel
1
9
Support Tie wrap
8
10
Control box case
1
11
Cable gland(2type)
8
12
Bracket
4
10 BEFORE INSTALLATION
ENGLISH
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 Where sulphurous gas is present such as that in areas of hot spring.
④ In vehicles or vessels.
⑤ Where voltage fluctuates a lot such as that in factories.
⑥ Where high concentration of vapor spray are present.
⑦ Where machines generating electromagnetic waves are present.
⑧ Where acidic or alkaline vapor is present.
⑨ The option boxes must be installed with entrances downward.
• Check the mentioned below, when you apply the AHU (Field supply).
① If the AHU (Field supply) provided in the field is exclusively for heating, you must not
change the operating mode to cooling on the remote controller. If not, it can cause
electric shock, injury or death. If you want to operate in cooling mode, AHU (Field supply) must comply with the following details.
(Following)
- The insulation level of AHU (Field supply) motor must be ‘F’ or above, and the protection level must satisfy ‘IP 54’.
- AHU (Field supply) must have the drain pan installed.
② Fan speed button on the wired remote controller (PQRCVSL0 /PQRCVSL0QW) is not
operated.
③ For refrigerant piping of outdoor unit, refer to the installation manual supplied with the
outdoor unit.
④ For installation of the wired remote controller (PQRCVSL0 /PQRCVSL0QW), refer to
the manual supplied with the wired remote controller.
⑤ For protecting the refrigerant cycle in heating, the inlet Air temperature to the Heat
Exchanger has to be over 5 °C.
⑥ The EEV or TXV kit has to be installed on the AHU as close as possible to the Heat
Exchanger.
• AHU Communication Kit
① Thermistor cable and remote controller wire should be located at least 50mm away
from power supply wires and from wires to the controller. Not following this guideline
may result in malfunction due to electrical noise.
② Use only specified wires, and tightly connect wires to the terminals. Keep wiring in
neat order so that it does not obstruct other equipment. Incomplete connections could
result in overheating, and in worse case electric shock or fire.
BEFORE INSTALLATION
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.
- After checking the need capacity, remove the 198 k Option PCB equipped in the main
PCB, and set up the Option PCB fitted the need capacity in the main PCB.
Detail
Capacity setting
'Option PCB'
Option PCB
P/NO
Capacity
(Btu/h)
Standard heat
exchanger volume
(10-3 × m3)
Maximum heat
exchanger capacity
(kW)
Air Flow rate
(CMM)
EBR52358907
28 k
2.7
8.6
22~26
EBR52358908
36 k
3.1
11
25~32
EBR52358909
42 k
3.4
13.8
31~35
EBR52358910
48 k
4.0
15.4
33~45
EBR52358911
76 k
5.4
22.2
50~64
EBR52358912
96 k
6.3
28.1
64~72
EBR52358914
115 k
7.3
33.7
72~88
EBR52358915
134 k
8.5
39.3
88~103
EBR52358916
153 k
9.5
45.4
103~116
EBR52358917
172 k
10.5
50.4
114~129
EBR52358913
198 k
11.2
56.2
121~137
* Evaporator Saturated Temperature(SST) = 6 °C, SH (Superheat) 5 K, Air Temperature =
27 °C DBT / 19 °C WBT
* Heat exchanger volume [m3] : Tube cross-section area × Tube length
-. Tube cross-section area [m2] = π × ID2 /4
-. Tube length [m] = Tube length of 1 pipe × Tube step × Tube row
ENGLISH
! CAUTION
11
12 BEFORE INSTALLATION
ENGLISH
! CAUTION
• AHU Operation range
- For Installation of Room thermistor, always place it to the inlet of Heat Exchanger. Otherwise, it may might not operate properly.
- Range of the inlet Air temperature to the Heat Exchanger is 18 ~ 40 °C for cooling & 5 ~
30 °C for heating. If the temperature is under 18 °C for cooling & over 30 °C for heating,
the system might operate ON and OFF because of protection logic system’s.
No
Connection condition
Combination
100% Fresh Air Intake
1) The total capacity of 100% Fresh Air Intake AHU should be
1 AHU only are connected
50~100% of outdoor unit.
with outdoor units
2
1) The total capacity of system’s (IDU + 100% Fresh Air
Intake AHU) should be 50~100% of outdoor unit.
Combination between
IDU and 100% Fresh
Air Intake AHU.
2) The total capacity of 100% Fresh Air Intake AHU should be
less than 30% of the outdoor units.
COMMUNICATION KIT INSTALLATION 13
Mechanical installation
1. Remove the Communication kit box cover by unscrewing the plastic bolt (4EA).
2. 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)
189 mm
298 mm
Provided holes
Ø4.5 mm (4EA)
ENGLISH
COMMUNICATION KIT INSTALLATION
14 COMMUNICATION KIT INSTALLATION
ENGLISH
Electric Wiring Work
Circuit diagram
Terminal Block No.
Connection
1(L), 2(N)
Power Supply
1-3
4-5
6-7
8-9
10-11
12-14
15-20
To AHU
To Outdoor Unit
To AHU
To EEV Kit
Function
220-240 V~ 50 Hz
220 V~ 60 Hz
Fan Signal
Communication Line
Room Thermistor
Pipe In Thermistor
Pipe Out Thermistor
Remote Controller
EEV Kit
Remark.
HI / MID / LOW
Internet A, B
-
COMMUNICATION KIT INSTALLATION 15
ENGLISH
Electrical Work
Connection of the wires
1. For connection to outdoor unit and to controller (Field supply) :
Pull the wires inside through the cable gland and close the nut firmly in order to ensure a good
pull relieve and water protection.
2. The wires require an additional pull-relief. Strap the wire with the support tie wrap.
(Front view)
Detail
Support
tie wrap
Nut of cable
gland
Cable insert
(Side view)
3. For the wired remote controller wire and outdoor unit communication wire, remove the coating at the end of the wire to connect and use the ring type (Ø3) to connect to the terminal
block.
Ring type (Ø 3)
4. Each wire have to pass the number of the cable gland mentioned below.
8
1 2
3
4 5 6
(Side view)
7
No.
Electric wire
①
POWER SUPPLY
②
FAN SIGNAL
③
Outdoor com.
④
Room thermistor
⑤
Pipe thermistor(In/Out)
⑥
Remote controller
⑦
EEV Kit
⑧
DRY contact
16 COMMUNICATION KIT INSTALLATION
ENGLISH
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 legislation.
• Refer to the installation manual attached to the outdoor unit for the size of power supply
electric wire connected to the outdoor unit, the capacity of the circuit breaker and switch,
wiring and wiring instructions.
COMMUNICATION KIT INSTALLATION 17
ENGLISH
Dry contact connection_optional accessory
Dry contact
installation location
❈ Applicable dry contact model
- PQDSBNGCM1
1. Using screw (4EA), fix the dry contact on the side panel.
Dry contact PCB
CN_The/Oper
CN-_INDOOR
CN_PI485
CN_MODE
CN_OUT
Dry Contact PCB
Local controller
Signal
Field work
2. Using cable, connect the dry contact to main PCB.
For more information, please refer to dry contact installation manual.
18 COMMUNICATION KIT INSTALLATION
[AHU]
Motor
M
Relay
HEX
Field Wiring
M
LOW(L)
R-HI
R-MED
̺
L
N
̺
̺
(MCC Panel )
Motor input power
220-240 V~ 50 Hz
220 V~ 60 Hz
MED
̺
̺
1
2
̺
3
̺
̺
̺
R-LOW
̺
̺
LOW
[AHU Comm. Kit]
HI
MED(L)
HI(L)
Factory Wiring
N
ENGLISH
FAN Signal Wiring Concept
̺
L
N
̺
̺
Control power
220-240 V~ 50 Hz
220 V~ 60 Hz
Cable : Over CV 1.5 mm2
! CAUTION
• If the motor is On/Off type, HI/MED/LOW wire have to connect as common.
For example, If you just connect HI wire to the motor(On/Off), motor is not operating
according to our control logic.
• High, Middle, Low wire from AHU Comm. Kit should not be connected directly to the
motor. Always use it as a motor for driving the relay contacts. Otherwise there is a risk of
damage to product or a fire.
THERMISTORS INSTALLATION 19
ENGLISH
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(EBG61287703)
: Install the thermistor behind the distributor on the coldest pass the heat exchanger
(contact your heat exchanger dealer).
2 Pipe_Out(EBG61287704)
: Install the thermistor at the outlet of the heat exchanger as close as possible to the heat
exchanger.
Evaluation must be done to check if the evaporator is protected against freeze-up.
Execute test operation and check for freeze-up.
1 Pipe_In(Suction pipe)
2 Pipe_Out(Discharge pipe)
1
2
(Air Handling Unit)
20 THERMISTORS INSTALLATION
ENGLISH
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 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.
Tie wrap
1
2
Thermistor
45°
Fixation of the pipe thermistors (Field work)
1 Fix the thermistor with insulating aluminum tape (Field supply) in order to ensure a good heat
transfer.
2 Put the supplied piece of rubber around the thermistor (EBG61287703/04) in order to avoid
loosening of the thermistor after some years.
3 Fasten the thermistor with 2 tie wraps (Field Supply)
4 Insulate the thermistor with insulation sheet (Over 5t, Field Supply)
1
2
3
4
THERMISTORS INSTALLATION 21
INSTRUCTION
Water
• Put the thermistor wire slightly top to above water accumulation on down of the thermistor.
• 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.
2
1 Most sensitive point of the thermistor
2 Maximize the contact
1
45°
ENGLISH
!
22 TROUBLESHOOTING
ENGLISH
TROUBLESHOOTING
Problem
Cause
AHU Communication Kit
does not work
Remedy
No power supply
Check the electrical connection and voltage
of the power supply.
Wiring is wrong
Check the electrical connection of the
Communication Kit (Refer to the circuit diagram of the Communication Kit)
AHU Communication Kit
is broken
Check the electrical and mechanical part.
[Error Code]
Display Number
Error Item
Cause of Error
CH
01
Room Temperature
Temperature sensor disconnection or
short circuit on Room or RA of AHU
CH
02
Pipe In Temperature sensor
error
Temperature sensor disconnection or
short circuit on pipe inlet of AHU
CH
03
Communication error between
wired remote controller and
Comm. Kit
No communication signal for more
than 3 minutes from wired remote
controller to the Comm. Kit
CH
05
Communication error between
Comm.
Kit and Outdoor Unit
No communication signal for 5 minutes
continuously from Comm. Kit to Outdoor Unit
CH
06
Pipe Out Temperature sensor
error
Temperature sensor disconnection or
short circuit on pipe outlet of AHU
CH
09
Option PCB EEPROM error
No reading signal for 5 times continuously from EEPROM to Comm. Kit
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