LG ACHH060LBAB Owner’s Manual

INSTALLATION &

OWNER’S 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. Please read this manual carefully before operating your set and retain it

for future reference.

[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands

[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA

Air Cooled Liquid Chilling Package

ACHH Series

Original instruction

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MFL67262615	www.lg.com
Rev.01_120320	Copyright © 2018 - 2020 LG Electronics Inc. All Rights Reserved.

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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 air conditioner 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 air conditioner.

•Keep doors or windows closed tightly while you are operating the air conditioner.

•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.

•Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.

•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.

ENGLISH

Disposal of your old appliance

1.This crossed-out wheeled bin symbol indicates that waste electrical and electronic products (WEEE) should be disposed of separately from the municipal waste stream.

2.Old electrical products can contain hazardous substances so correct disposal of your old appliance will help prevent potential negative consequences for the environment and human health. Your old appliance may contain reusable parts that could be used to repair other products, and other valuable materials that can be recycled to conserve limited resources.

3. You can take your appliance either to the shop where you purchased the product, or contact your local government waste office for details of your nearest authorised WEEE collection point. For the most up to date information for your country please see www.lg.com/global/recycling

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

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.

!WARNING

•Installation or repairs made by unqualified persons can result in hazards to you and others.

•Installation of all field wiring and components MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code 70 and the National Building Construction and Safety Code or Canadian Electrical Code and National Building Code of Canada.

•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

•Installation is to be performed by qualified personnel who are familiar with local codes and regulations.

-There is risk of fire, electric shock, explosion, or injury.

•Always install a dedicated circuit and breaker.

-Improper wiring or installation may cause fire or electric shock.

•For re-installation of the installed product, always contact a dealer or an Authorized Service Center.

-There is risk of fire, electric shock, explosion, or injury.

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4	IMPORTANT SAFETY INSTRUCTIONS
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• Do not install, remove, or re-install the unit by yourself (customer). - There is risk of fire, electric shock, explosion, or injury.

• Prepare for strong wind or earthquake and install the unit at the specified place.

- Improper installation may cause the unit to topple and result in injury.

• When installing and moving the Product to another site, do not charge it with a different refrigerant from the refrigerant specified on the unit. - If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.

• Securely install the cover of control box and the panel.

- If the cover and panel are not installed securely, dust or water may enter the outdoor unit and fire or electric shock may result.

• If the Product is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit when the refrigerant leaks.

- Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result.

• Use the correctly rated breaker or fuse. - There is risk of fire or electric shock.

• Have all electric work done by a licensed electrician according to regulations and the instructions given in this manual and always use a special circuit.

- If the power source capacity is inadequate or electric work is performed improperly, electric shock or fire may result.

• There must be no obstruction above the unit.

- It would deflect discharge air downward where it could be recirculated back to the inlet of the condenser coil. The condenser fans are propeller type and will not operate with ductwork on the fan outlet.

• When transporting the product, use the forklift or spreader bar in accordance with the manual.

- Arbitrarily moving the product can cause product damage or injury.

• When moving the product using the forklift, check the weight of the chiller, size and length of the fork to select the appropriate equipment. - It can cause damage or injury.

	IMPORTANT SAFETY INSTRUCTIONS		5
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	• When hanging the product on the hoist to move the chiller, make sure

that the load of the product is evenly distributed and leveled during the move.

- It can cause damage or injury.

• When moving the product using the spreader bar, make sure to select the spreader bar with material and size to sufficiently support the strength spreader bar.

- Using inappropriate spreader bar can cause the product to fall and cause injury due to the strength or size.

• Always ground the product.

- There is risk of fire or electric shock.

• Do not store or use flammable gas or combustibles near the Product. - There is risk of fire or failure of product.

• Do not reconstruct to change the settings of the protection devices. - If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by LGE are used, fire or explosion may result.

• Ventilate before operating Product when gas leaked out. - It may cause explosion, fire, and burn.

• Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen and Do not use Flammable gases. Otherwise, it may cause fire or explosion.

- There is the risk of death, injury, fire or explosion.

Use

•Do not damage or use an unspecified POWER CABLE.

-There is risk of fire, electric shock, explosion, or injury.

•Use a dedicated outlet for this appliance.

-There is risk of fire or electrical shock.

•Be cautious that water could not enter the Product.

-There is risk of fire, electric shock, or product damage.

•Do not touch the power switch with wet hands.

-There is risk of fire, electric shock, explosion, or injury.

•When installing and moving the Product to another site, do not charge it with a different refrigerant from the refrigerant specified on the unit.

-If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.

		6	IMPORTANT SAFETY INSTRUCTIONS
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		• When the product is soaked (flooded or submerged), contact an
			Authorized Service Center.
			- There is risk of fire or electric shock.
		• Be cautious not to touch the sharp edges and coil.
			- It may cause injury.
		• Take care to ensure that nobody could step on or fall onto the outdoor
			unit.
			- This could result in personal injury and product damage.
		• Do not open the inlet grille of the product during operation.
			(Do not touch the electrostatic filter, if the unit is so equipped.)
			- There is risk of physical injury, electric shock, or product failure.
		• Be careful during valve checkout about hot gas line
			- It may become hot enough to cause injury.
		• Electric shock hazard. Can cause severe injury or death. Even when
			power to the panel is off, output board could be connected to high
			voltage.
		• Electric shock hazard. Turn off all power before doing any service.
		• Turn the main power off in case of installation or service.

! CAUTION

Installation

• Always check for gas (refrigerant) leakage after installation or repair of product.

- Low refrigerant levels may cause failure of product.

• Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.

- It may cause a problem for your neighbors.

• Keep level even when installing the product. - To avoid vibration or water leakage.

• Do not install the unit where combustible gas may leak.

- If the gas leaks and accumulates around the unit, an explosion may result.

• Do not install the product where it is exposed to sea wind (salt spray) directly.

- It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.

IMPORTANT SAFETY INSTRUCTIONS		7
• When installing the unit in a hospital, communication station, or		<![if ! IE]> <![endif]>ENGLISH

similar place, provide sufficient protection against noise.

- The inverter equipment, private power generator, high-frequency medical equipment, or radio communication equipment may cause the Product to operate erroneously, or fail to operate. On the other hand, the Product may affect such equipment by creating noise that disturbs medical treatment or image broadcasting.

• Use power cables of sufficient current carrying capacity and rating. - Cables that are too small may leak, generate heat, and cause a fire.

• Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer Product, not a precision refrigeration system.

- There is risk of damage or loss of property.

• Keep the unit away from children. The heat exchanger is very sharp. - It can cause the injury, such as cutting the finger. Also the damaged fin may result in degradation of capacity.

• The operator must provide protection against water circuit freezing on all Product units.

- To prevent damage from freezing water.

• If anyone other than a licensed Professional installs, repairs, or alters LG Electronics Air Conditioning Products, the warranty is voided.

- All costs associated with repair are then the full responsibility of the owner.

• Do not install the unit in potentially explosive atmospheres.

Use

•Do not use the Product in special environments.

-Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the Product or damage its parts.

•Make the connections securely so that the outside force of the cable may not be applied to the terminals.

-Inadequate connection and fastening may generate heat and cause a fire.

•Be sure the installation area does not deteriorate with age.

-If the base collapses, the Product could fall with it, causing property damage, product failure, or personal injury.

•Install and insulate the drain hose to ensure that water is drained away properly based on the installation manual.

-A bad connection may cause water leakage.

		8	IMPORTANT SAFETY INSTRUCTIONS
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		• Be very careful about product transportation.

- Do not touch the heat exchanger fins. Doing so may cut your fingers. - When transporting the outdoor unit, suspending it at the specified positions on the unit base. Also support the outdoor unit at four points so that it cannot slip sideways.

• Safely dispose of the packing materials.

- Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries.

- Tear apart and throw away plastic packaging bags so that children may not play with them. If children play with a plastic bag which was not torn apart, they face the risk of suffocation.

• Turn on the power at least 6 hours before starting operation.

- Starting operation immediately after turning on the main power switch can result in severe damage to internal parts. Keep the power switch turned on during the operational season.

• Do not touch any of the refrigerant piping during and after operation. - It can cause a burn or frostbite.

• Do not operate the Product with the panels or guards removed. - Rotating, hot, or high-voltage parts can cause injuries.

• Do not directly turn off the main power switch after stopping operation.

- Wait at least 5 minutes before turning off the main power switch. Otherwise it may result in water leakage or other problems.

• When re-running the product after keep product long time in a low temperature conditions, touch function may not work temporarily. - Wait for a time. After time, product work normally.

• Do not insert hands or other objects through the air inlet or outlet while the Product is plugged in.

- There are sharp and moving parts that could cause personal injury.

• Field wiring must be installed according to unit wiring diagram. - It may cause serious electrical damage can occur.

• Do not use an automotive grade antifreeze. Industrial grade glycols must be used. Automotive antifreeze contains inhibitors which will cause plating on the copper tubes within the Product evaporator. The type and handling of glycol used must be consistent with local codes.

• Electrical power must be applied to the compressor crankcase heaters 6 hours before starting unit to drive off refrigerant from the oil.

IMPORTANT SAFETY INSTRUCTIONS		9
• Any changes to these parameters must be determined and		<![if ! IE]> <![endif]>ENGLISH

implemented by qualified personnel with a thorough understanding of how these parameters affect the operation of the unit. Negligent or improper adjustment of these controls can result in damage to the unit or personal injury.

• Service on this equipment is to be performed by qualified refrigeration personnel familiar with equipment operation, maintenance, correct servicing procedures, and the safety hazards inherent in this work. Causes for repeated tripping of equipment protection controls must be investigated and corrected.

• Anyone servicing this equipment shall comply with the requirements set forth by the EPA in regards to refrigerant reclamation and venting.

• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

Children should be supervised to ensure that they do not play with the appliance.

• This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.

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10 TABLE OF CONTENTS

TABLE OF CONTENTS

2TIPS FOR SAVING ENERGY

3IMPORTANT SAFETY INSTRUCTIONS

11 PRODUCT INTRODUCTION

11 General information

21 CONTROL

21 Control panel configuration

25Freezer address setting

26Logging in to HMI

27Introduction to HMI menu

42 Introduction to schedule menu

50 Introduction to record menu

52 View setting menu

70FROM INSTALLATION TO TEST RUN

71INSTALLATION

71 Selecting installation location

78 Transportation method and precaution

80 Installing chiller

83Snow protection

84Water pipe connection

90Electric specification

91Electric work

95How to set control box address (Set cycle PCB address)

97How to install HMI indoors

99Unit Combination

100How to set the main controller address

101 TEST RUN/ADDITIONAL FUNCTION

101 Test run

103 Additional function

105 SELF DIAGNOSIS FUNCTION

107 HEAT SOURCE WATER MANAGEMENT

107Heat source water management

108Heat source water quality management standard table

109Water pipe side strainer

110Actions for problems in the test operation

110Plate type heat exchanger maintenance

111Daily inspection management

113 TROUBLESHOOTING

123 APPENDIX

PRODUCT INTRODUCTION 11

PRODUCT INTRODUCTION

General information

Product information

Inverter Scroll Chiller of LG Electronics provides cold water for cooling air conditioning system using AHU or FCU etc. Air Cooled R410A Refrigerant Scroll Chiller ACHH Series designed for outdoors is a single unit product of modular type composed of scroll compressor, air cooled condenser, electronic expansion valve, evaporator and LG HMI (Human Machine Interface).

ACHH Series is composed of 2 inverter compressor to form independent refrigerant cycle and one unit module can configure up to maximum of 3 refrigerantcycles and interlock of 5 modules by using AC Smart controller and up to 10 modules by using ACP.

ACHH Series applies the inverter technology to the compressor and condenser fan motor for not only high load but also highly efficient operation in all operating areas.

HMI controller of ACHH Series has the LG’s unique control logic to monitor all parameters controlling the operation. These parameters can be controlled to improve the operational efficiency to continuously supply cold water by optimizing to the environment.

Each refrigerant cycle includes the check valve, electronic expansion valve, strainer and refrigerant charge valve. Evaporator connected to the cold water uses the plate type heat exchanger and the condenser uses the air cooled fin and tube heat exchanger.

Inverter Scroll Chiller is a commercial/industrial product.

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12 PRODUCT INTRODUCTION

Model naming convention

A C H H 020 L B A B

Development number

Communication method : A = Modbus

Model type : A = Module model

B = Independent model

C = Slave model

Power

specification : L = 380~415 V/50,60 Hz/3 Ø H = 460 V/60 Hz/3 Ø

Cooling capacity (RT) : 060 = 60 RT 040 = 40 RT 020 = 20 RT

Compressor type :

H = Scroll(High pressure type)

Cooled type : A = Air cooled C/O

H = Air cooled H/P

Product type : C = Chiller

Area of production Refrigerant :

A = South Korea R410A

Airborne Noise Emission

The A-weighted sound power of this product is 93 dB.

** The noise level can vary depending on the site.

The figures quoted are emission level and are not necessarily safe working levels. Whilst there is a correlation between the emission and exposure levels, this cannot be used reliably to determine whether or not further precautions are required. Factor that influence the actual level of exposure of the workforce include the characteristics of the work room and the other sources of noise, i.e. the number of equipment and other adjacent processes and the length of time for which an operator exposed to the noise. Also, the permissible exposure level can vary from country to country. This information, however, will enable the user of the equipment to make a better evaluation of the hazard and risk.

PRODUCT INTRODUCTION 13

Product configuration

This chiller model is configured as shown below.

	1
	2		Legend
5			1.	Fan motor
			2.	Fin & tube heat exchanger
			3.	Main Controller box
			4.	Sub Controller box
			5.	Condenser cover
4			6.	Rope support
			7.	Forklift groove
		8
			8.	Side cover

3

7

6

Cooling cycle

ACHH Series uses the high pressure type scroll compressor, and the suction gas part is separated from the high pressure discharge part and the motor is installed on the low pressure gas part. Space for motor and storage for refrigerant is secured in the low pressure gas part to increase the reliability for the liquid compression.

Because the sucked refrigerant gas cools the motor and flows to the compressor, separate cooling device to cool the compressor is not required. Inside the system, oil to lubricate the compressor is mixed with the refrigerant to discharge both the oil and refrigerant during the operation.

Because the oil discharged from the compressor can reduce the heat transfer efficiency when thick layer is built up on the inner walls of the condenser and evaporator, device to prevent the refrigerant and oil to be discharged together is added to prevent this issue.

This lubrication system ensures longer life for the compressor, improves the sealing of the compression space and provides low noise operation.

As the air cooled fin and tube type heat exchanger, the condenser is composed of heat exchanger in V shape, and the electronic expansion valve is used for efficient control in all load conditions. The controller used in the chiller is exclusively for LG and monitors various sensors installed on the product to protect the product.

For continuous supply of cold and hot water, the product is equipped with maximum continuous operational function and also provides precision control to supply accurate target amount of cold and hot water.

But the protective devices will immediately stop the product when the product reaches abnormal condition or area limit.

In case of an issue, the controller of the chiller will provide helpful diagnostic message to the administrator.

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14 PRODUCT INTRODUCTION

Description of cooling cycle

The cooling cycle of ACHH Series can be described using the following Pressure – Enthalpy chart.

, , , and in the following chart shows the conditions of the refrigerant. The refrigerant comes into the compressor motor and cools the motor, and becomes overheated and moves to the suction inlet of the compressor. The oil inside the compressor seals the gap between the compressor scrolls and provides lubrication for the bearing to help the compression of the refrigerant. During this time, the refrigerant is compressed and is discharged to the air cooled condenser. ( ) The compressed refrigerant passes through the air cooled condenser and exchanges the heat with the outdoor air. The condensed refrigerant then passes the condenser to be overcooled. ( → → ). The refrigerant that passed through the condenser expands in the electronic expansion valve to flow to the evaporator. ( → ). The refrigerant is evaporated in the plate type heat exchanger, the evaporator. ( → ) Liquid refrigerant of low temperature pressure passes through the evaporator to cool the water flowing into the evaporator and the refrigerant itself receives the heat to evaporate to gas condition. ( ) The refrigerant continues to change the phase and continuously repeats the cooling cycle. For heating, the refrigerant flows in the reverse direction to provide hot water.

Pressure

Enthalpy

Lubrication system

Oil is efficiently separated inside the scroll compressor and even when the cycle operates, most of the oil remains inside the scroll compressor. Only part of the oil will be mixed with the refrigerant to be circulated within the cycle.

Partial load operation

Each cooling cycle operates independently and 1 cooling cycle is composed of 2 inverter compressor as shown below.

2 Inverter compressors increase the RPM after staring to operate to gradually increase the cooling capacity.

The user can operate the product smoothly at optimal condition by setting the cooling capacity based on the linear control of LG Chiller Controller and the product has efficient partial load performance at any load.

PRODUCT INTRODUCTION 15

Cooling capacity
Inverter	Inverter
compressor 1	compressor 2

Capacity (%)

100 %

75 %

50 %

25 %

0 %

25 % 50 % 75 % 100 % Load (%)

Cycle configuration and sensor location

This chiller model is configured as shown below.

1 UNIT

		Cooling
		Heating
	M	Fan motor
		4 way valve
		Pressure sensor
		Pressure switch
		Temperature sensor
	S	Solenoid valve
		Check valve
Compressor		Strainer
2
		Electonic expantion
		Valve
		Expansion valve

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16 PRODUCT INTRODUCTION

2 UNIT

		Cooling
		Heating
	M	Fan motor
		4 way valve
		Pressure sensor
		Pressure switch
		Temperature sensor
Compressor	S
2		Solenoid valve
		Check valve
		Strainer
		Electonic expantion
		Valve
		Expansion valve
Compressor
2

PRODUCT INTRODUCTION 17

3 UNIT

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	Cooling
	Heating
M	Fan motor
	4 way valve
	Pressure sensor
	Pressure switch
Compressor
2
	Temperature sensor
S	Solenoid valve
	Check valve
	Strainer
	Electonic expantion
	Valve
	Expansion valve
Compressor
2
Compressor
2

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18 PRODUCT INTRODUCTION

List of safety device and setting

	No.	Safety device	Setting	Function
	1	High pressure	3.8 MPa	Stops operation of the module when the pressure
		switch		is above the setting
	2	Fuse	250 V 5 A (Main)	Disconnects current when it exceeds the normal
			250 V 15 A (INV)	value
	3	Compressor cir-	35 A	Measures and stops over-current per compressor
		cuit breaker
	4	Fan motor circuit	7 A	Measures and stops over-current per motor
		breaker
	5	Discharge tem-	110 °C	Stops compressor in stages
		perature sensor
	6	High pressure	3 801 KPa	Starts protective operation control to reduce the
		sensor		cycle pressure
	7	Low pressure	0.22 MPa	Starts protective operation control to raise the
		sensor		cycle pressure
	8	Water pipe tem-	Off : 3 °C	Prevent evaporator from freezing
		perature sensor
	9	Reverse phase	-	Compares the current of each phase and stops
		detector		when it is in reverse phase
	10	Liquid compres-	-	Discharge over-heating level goes up to prevent
		sor prevention		liquid compression
	11	Compressor ratio		Compressor frequency is reduced when operating
			9	at high compression ratio to prevent the internal
		limit
				parts within the compressor from being damaged

PRODUCT INTRODUCTION 19

Operation range and limit

The following table shows the operation range of the product. Do not operate the product exceeding the following operation range.

H/P

		Voltage		V	342~457
		Cold water inlet temperature		°C	8 or above
		Cold water outlet temperature		°C	4 ~ 20
	Operation
		Heat water inlet temperature		°C	25 ~ 52
	range
		Heat water outlet temperature		°C	30 ~ 55
		Outdoor temperature	Cooling	°C	-15 ~ 48
			Heating	°C	-30 ~ 35

(1)Product performance range at rated condition is 20-100 %.

-Cooling rate condition: Outdoor temperature 35 °C, Water inlet temp. 12 °C. Water Outlet temp. 7 °C

-Heating rate condition: Outdoor temperature 7 °C, Water inlet temp. 40 °C. Water Outlet temp. 45 °C

(2)When running heating operating with outdoor temperature is less than 7 °C, Inlet water temperature must be at least 20 °C.

C/O

	Voltage		V	342~457
Operation	Cold water inlet temperature		°C	8 or above
range	Cold water outlet temperature		°C	4 ~ 20
	Outdoor temperature	Cooling	°C	-15 ~ 48

(1)Product performance range at rated condition is 20-100 %.

-Cooling rate condition: Outdoor temperature 35 °C, Water inlet temp. 12 °C. Water Outlet temp. 7 °C

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20 PRODUCT INTRODUCTION

Operation range of heating mode

Water temperature

55°C		26°C
		52°C
50°C
45°C
40°C	42°C
35°C				Outlet water temperature
				Inlet water temperature
30°C
25°C
	-30°C -25°C -20°C -15°C -5°C	5°C 15°C 25°C 35°C 45°C Outdoor temperature

Operation range of cooling mode

Water temperature

25 °C	48 °C
20 °C

15 °C

Outlet water temperature

Inlet water temperature

10 °C

8 °C

5 °C

4 °C

-20 °C -10 °C 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C Outdoor temperature

! CAUTION

When running cooling operation with outdoor temperature is less than -10 °C, depending on inlet temperature, the product does not operate normally, or can take a long time for running.

In this case, Please running operation After raising the inlet temperature by circulating load water.

Please add antifreeze when operating at ambient temperature less than 5 °C. (There is a risk of freeze.)

CONTROL

Control panel configuration

CONTROL 21

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HMI

Power supply

MCCB

			Main		controller
	Terminal block
	Sub Control Box		Main Control Box
			<Inside control panel>

•HMI (Human Machine Interface)

This is for basic product setting and command, and shows the information of product and each cycle.

•Main controller

This controls the input/output port and the communication with each cycle.

•Power supply

This supplies the power to the HMI.

•MCCB (Molded Case Circuit Breaker) This shuts off the overcurrent.

•Terminal block

This is the terminal block that receives the main power externally.

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22 CONTROL

Chiller controller rotary, DIP switch setting

Switch location

SW_COMF

SW_LEFT

SW_UP

	SW_BACK		SW_RIGHT
		SW_DOWN
Name	Description
SW_RIGHT	Changes the setting.
SW_UP	Moves the screen.
SW_LEFT	Changes the setting.
SW_DOWN	Moves the screen.
SW_COMF	Sets the selected function.
SW_BACK	Moves to the previous step.

Chiller Controller includes the buttons described above so that the following functions are available for setting without HMI.

CONTROL 23

Option Setting

Press SW_COMF Button to move to O Level Setting Screen.

<Screen>

<Button>

Press Up or Down (▲▼) Button to go to a desired function. If the desired function shows, press SW_COMF Button. Then, the Screen moves to 1 Level Setting.

Press Left or Right ( ) Buttons to go to a desired function. And Press SW_COMF Button to set the function.

To go to the previous, press SW_BACK Button.

		Description	Screen Displays(0 Level)				Screen Displays(1 Level)
	1	Start/Stop	O	P	E	R		R	U	N
							S	T	O	P
	2	Cooling/Heating	C	Y	C	L	H	E	A	T
							C	O	O	L
	3	Cooling setpoint temperature	C	-	T	E				7
	4	Heating setpoint temperature	H	-	T	E			4	5
	5	Load outflow Temperature
								L	O	C
	6	Control Mode	S	Y	S	1	D	I	S	T
							S	C	H	E
	7	Remote Mode	S	Y	S	2	C	O	N	T
								B	U	S
	8	Central Control Address	A	D	D	R				1
	9	Maximum Operation Frequency	H	I	-	R		1	1	0
	10	Capacity of product	H	P	4	0
			C	O	4	0
	11	Version			1	0
			S	V	1	0

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			(1 Level)
		Description	Screen Display	Detail Description
		Start/Stop	RUN /STOP	Set RUN to operate the product and STOP to stop the
				operation.
				Sets the product’s Cooling/Heating Operation Mode.
	Cooling/Heating		HEAT/COOL	COOL selects Cooling Mode and HEAT selects Heat-
				ing Mode.
	Cooling setpoint tem-		7	Sets Cooling Target Temperature. (4 °C~ 20 °C)
		perature
	Heating setpoint tem-		45	Sets Heating Target Temperature.(30 °C~ 55 °C)
		perature
	Load outflow water		-	Shows the temperature value of Load outflow water.
		Temperature		(Specified in 0 Level)
				Set’s the product’s Control Mode. In LOC, the product
		Control Mode	LOC/DIST/SCHE	control is available with HMI and Chiller Controller.
				DIST refers Remote Control Mode. In SCHE, the prod-
				uct is controlled following the schedule set at HMI.
				Sets how to set in Remote Mode. CONT enables the
		Remote Mode	CONT/BUS	product’s operation mode by simple switch contacts.
				BUS enables the control on the entire product through
				communication from other communication devices.
	Central Control			The product address can be set for communication
			1	with other communication devices. The address can
		Address
				be set by selecting values from 1-247.
	Maximum Operation		110	Sets the Maximum Operation Frequency.(70 Hz~130
		Frequency		Hz)
	Capacity of product		-	Shows the current Capacity of product.
				(Specifies in 0 Level)
				Shows the program information of Chiller Controller
				installed in the current product as Version. Version
		Version	-	information is subjected to change for improvement of
				the product performance or the quality improvement.
				(Specifies in 0 Level)

CONTROL 25

Freezer address setting

Address setting of product should be set from HMI and Main Controller and if 2 addresses does- n’t match each other, HMI communication error will occur.

• Main Controller address setting

Press down direction and right direction button (▼) at the same time. When FN01 appears, press SW_CONF button.

Select desired address using left and right button ( ) and address will be set if press SW_CONF button. If you don’t want, please press SW_CONF button.

	Description	Screen Displays(0 Lever)				Screen Displays(1 Lever)
1	Chiller Address	F	N	0	2				1

! CAUTION

• If Main Controller address doesn’t match HMI address, Error will occur. (please refer to control>freezer interlocking control about HMI address setting)

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26 CONTROL

Logging in to HMI

This chapter will explain about the composition of each screen in HMI, detail functions, and operation methods. When power is applied to HMI, HMI automatically operates. When HMI starts, Home screen appears.

! CAUTION

When HMI is installed indoors, the guaranteed communication distance is 500 m.

-Guaranteed communication distance of HMI: 500 m

(But, when connected indoor, the end resistance (100-200 Ω) must be installed at the terminal connected to HMI for smooth communication. In this case, if the installation location of the Unit is different from that of HMI, the maximum permitted connection distance of the communication cable between the two locations is displayed.)

CONTROL 27

Introduction to HMI menu

This chapter describes the HMI menus to know to operate the product and how the screen is configured.

HMI main screen configuration

After logging in to HMI, the system view screen that shows the common information of the product is displayed as shown below.

Icon	Description
	You can see the load water temperature, pump/flow amount status, and sys-
	tem information.
	It sets the Start/Stop, Set Temperature, Operation Mode (Only for Heatpump
	Model), control mode, max. operation frequency, and demand control ratio are set.
	It checks the individual cycle’s operation information.
	It checks the set schedule.
	It checks the occurred error history.
	It sets the installer setting, screen setting, and system setting.
	It returns to the previous menu.
	Home screen appears.

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28 CONTROL

View chiller information

Chiller information is composed of the load water temperature, pump/flow amount status, and system information.

• Load water temperature screen

Icon	Description
E.W.T	It shows the common load entering water temperature value.
L.W.T	It shows the common load leaving water temperature value.

• Pump/flow amount status screen

CONTROL 29

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	Icon	Description
		If it is in operation, it always maintains ON, and when the product operation is
		stopped, the freeze and burst mode is applied, and the freeze and burst prevention
		mode operates as follows.
		According to the outdoor air temperature condition, the load water pump repeats
		operation ON and OFF.
	Pump Output	Outdoor air temperature < 1 °C → always “ON”
		1 °C ≤ outdoor air temperature < 5 °C → 2 min. operation and 18 min. stop
		Outdoor air temperature ≥ 5 °C → operation “OFF”
		The freeze and burst prevention mode is possible when the pump is connected, and
		to interface with the pump, Pump Output connect shall be connected, and to check
		whether the pump operates, Pump Interlock connector shall be connected.
		(For the connector connection method, refer to the connection diagram.)
		It receives the status of the load water pump output through the external signal con-
	Pump Interlock	tact point of the pump.
		(When the product is in operation, the pump output shall maintain “ON” state, and
		otherwise, alarm will occur.)
		It shows the current load water’s flow amount switch status value.
	Flow Switch	(When the product is in operation, the pump output shall maintain “ON” state, and
		otherwise, alarm will occur.)
	Capacity	It shows the capacity of the device.

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30 CONTROL

• System information screen

Icon	Description
Setting Temp.	It shows the set temperature for the current operation mode.
Outdoor Temp.	It shows the current outdoor air temperature value.
Operation Current	It shows the operation compressor’s overall operation current value.
Starting Delay	It shows the time of the standby state before starting the product.