LG HP 03 24 Air Cooled Heat Pump Inverter Scroll Chiller Instruction Manual

: June 2, 2024
: LG

Table of Contents

HP 03 24 Air Cooled Heat Pump Inverter Scroll Chiller
Product Information
Specifications:
- Product Usage Instructions
Installation:
Q: Can I install the chiller myself?
Q: What refrigerant does the chiller use?

HP 03 24 Air Cooled Heat Pump Inverter Scroll Chiller

Product Information

Specifications:

Product: LG Air-Cooled Heat Pump Inverter Scroll Chiller
Manufacturer: LG Electronics U.S.A., Inc.
Refrigerant: R32 (flammable)
For more technical materials, visit www.lghvac.com

Product Usage Instructions

Installation:

Danger:

1. Do not store or use flammable gas or combustibles near the
chiller. Risk of fire, explosion, and physical injury or death.

2. Do not supply power to the chiller until all wiring and
piping are completed or reconnected and checked. Risk of physical
injury or death due to electric shock.

3. Do not install the chiller in an environment with oil, steam,
sulfuric smoke, etc. Risk of fire, explosion, and physical injury
or death.

Safety Precautions (Warning):

1. The dealer or a trained technician must install the chiller.
Improper installation will result in fire, explosion, electric
shock, physical injury, or death.

2. The information contained in this manual is intended for use
by an LG trained service technician. Failure to carefully read and
follow all instructions will result in fire, electric shock,
explosion, physical injury, or death.

FAQ

Q: Can I install the chiller myself?

A: No, the chiller should be installed by a dealer or a trained
technician to prevent any risks of fire, explosion, electric shock,
physical injury, or death.

Q: What refrigerant does the chiller use?

A: The chiller uses R32 refrigerant, which is flammable. Care
should be taken to prevent any leaks that could lead to a fire
hazard.

LG AIR-COOLED INVERTER SCROLL HEAT PUMP CHILLERS KCHH MODELS
INSTALLATION MANUAL

PROPRIETARY DATA NOTICE
This document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A., Inc., and are
disclosed by LG Electronics U.S.A., Inc. only in confidence.
Do not throw away, destroy, or lose this manual. Please read carefully and store in a safe place for future reference.
Content familiarity is required for proper installation.
The instructions included in this manual must be followed to prevent product malfunction, property damage, injury, or death to the user or other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the symbols described by the summary list of safety precautions on page 4.
For more technical materials such as submittals, catalogs, engineering, owner’s, best practices, and service manuals, visit www.lghvac.com.
For continual product development, LG Electronics U.S.A., Inc. reserves the right to change specifications without notice. © LG Electronics U.S.A., Inc.

TABLE OF CONTENTS

Safety Precautions ………………………………………………………………………………………………………………………………………………………………………………… 4 Unit Nomenclature……………………………………………………………………………………………………………………………………………………………………………….. 14 Introduction…………………………………………………………………………………………………………………………………………………………………………………………. 15 Specifications ……………………………………………………………………………………………………………………………………………………………………………………… 17 Electrical Data……………………………………………………………………………………………………………………………………………………………………………………… 21 Dimensions …………………………………………………………………………………………………………………………………………………………………………………………. 22 Refrigerant Piping and Sensor Diagram / Operation Range and Limit ……………………………………………………………………………………………………. 28 Chilled Water Operation LImits and Performance………………………………………………………………………………………………………………………………….. 31 Hot Water Operation LImits and Performance……………………………………………………………………………………………………………………………………….. 35 Refrigerant Piping and Sensor Diagram / Operation Range and Limit ……………………………………………………………………………………………………. 39 Safety Devices and Settings…………………………………………………………………………………………………………………………………………………………………. 45 Placement Considerations …………………………………………………………………………………………………………………………………………………………………… 46 Transporting / Lifting …………………………………………………………………………………………………………………………………………………………………………… 51 Storing the Chiller / Installing Anti-Vibration and Anchor Bolts ……………………………………………………………………………………………………………… 52 Water Pipe System / Piping ………………………………………………………………………………………………………………………………………………………………….. 54 Freezing Precautions …………………………………………………………………………………………………………………………………………………………………………… 57 Water Pipe Installation / Pump Control / Quality Management ……………………………………………………………………………………………………………….. 58 Operating Pressure Drop / Design Flow………………………………………………………………………………………………………………………………………………… 59 Control Panel Configuration…………………………………………………………………………………………………………………………………………………………………. 64 Button Locations and Functions …………………………………………………………………………………………………………………………………………………………. 65 Optional Settings…………………………………………………………………………………………………………………………………………………………………………………. 66 HMI Screens………………………………………………………………………………………………………………………………………………………………………………………… 69 Electrical……………………………………………………………………………………………………………………………………………………………………………………………..115 BMS Integration…………………………………………………………………………………………………………………………………………………………………………………. 125 Installation to Test Run Flowchart ………………………………………………………………………………………………………………………………………………………. 127 Test Run ……………………………………………………………………………………………………………………………………………………………………………………………. 128 Troubleshooting General Errors …………………………………………………………………………………………………………………………………………………………. 140 Error Code Tables………………………………………………………………………………………………………………………………………………………………………………. 142 Remote Desired Temperature Contact Points ……………………………………………………………………………………………………………………………………… 149 Chiller Installation and Startup Check List …………………………………………………………………………………………………………………………………………. 152

Due to our policy of continuous product innovation, some specifications may change without notification.

3

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

SAFETY PRECAUTIONS

The instructions below must be followed to prevent product malfunction, property damage, injury or death to the user or other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the symbols described below.
TABLE OF SYMBOLS
DANGER This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
This symbol indicates situations that may result in equipment or property damage accidents only.
This symbol indicates an action that should not be performed.

R32

This symbol indicates that this chiller uses a flammable refrigerant. If the refrigerant is leaked and exposure to an external ignition source, there is a risk of fire.
This symbol indicates that the Operation Manual should be read carefully.
This symbol indicates that a service personnel should be handling this equipment with reference to the Installation Manual.
This symbol indicates that information is available such as the Operating Manual or Installation Manual.

INSTALLATION
DANGER
Do not store or use flammable gas or combustibles near the chiller. There is risk of fire, explosion, and physical injury or death.

Do not supply power to the chiller until all wiring and piping are completed or reconnected and checked. There is risk of physical injury or death due to electric shock.

Do not install the chiller in an environment with oil, steam, sulfuric smoke, etc. There is risk of fire, explosion, and physical injury or death.

4

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

SAFETY PRECAUTIONS

WARNING
The dealer or a trained technician must install the chiller. Improper installation will result in fire, explosion, electric shock, physical injury or death.
The information contained in this manual is intended for use by an LG trained service technician. Failure to carefully read and follow all instructions will result in fire, electric shock, explosion, physical injury or death.
For replacement of an installed unit, always contact an LG trained service provider. There is risk of fire, electric shock, explosion, and physical injury or death.
Wear protective gloves when handling equipment. Sharp edges will cause personal injury.
Do not change the settings of the protection devices. If the protection devices have been bypassed or are forced to operate improperly, or parts other than those specified by LG are used, there is risk of fire, electric shock, explosion, and physical injury or death.
Replace all control box and panel covers. If cover panels are not securely installed, dust, water, and animals will enter the outdoor unit, causing fire, electric shock, and physical injury or death.

If the chiller is installed in a small space, take measures to prevent the refrigerant concentration from exceeding safety limits in the event of a refrigerant leak. Consult the latest edition of American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) Standard 15. If the refrigerant leaks and safety limits are exceeded, it could result in personal injuries or death from oxygen depletion.
Dispose of the packing materials safely. · Packing materials, such as nails and other metal or wooden parts,
will cause puncture wounds or other injuries. · Tear apart and throw away plastic packaging bags; there is a risk of suffocation and death.
Install the chiller in a safe location where nobody can step on, fall onto it, or place objects on it. It will result in an accident that causes physical injury or death.
When installing or if moving the chiller to another site, do not charge it with a different refrigerant from the one specified. If a different refrigerant is used, or if air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the product may be damaged.

Always check for system refrigerant leaks after the unit has
been installed or serviced. Exposure to high concentration levels of refrigerant gas will lead to illness or death.

Safety Precautions

Due to our policy of continuous product innovation, some specifications may change without notification.

5

SAFETY PRECAUTIONS

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

WARNING
Properly install and insulate the drain piping to ensure water
is drained away properly. Improper installation can cause water to leak, generating a slippery surface that risks physical injury .

Install the unit considering the potential for strong winds or
earthquakes. Improper installation will cause the unit to fall over, resulting in physical injury or death.

CAUTION
Be very careful when transporting the product. There is a risk of the product falling and causing physical injury. · Use appropriate moving equipment (forklift, spreader bar, etc.) to transport each chiller; ensure the equipment is of the correct material and
capable of supporting the weights listed.
· Some products use polypropylene bands for packaging. Do not use polypropylene bands to lift the unit. · Support the chiller at specified positions to avoid slipping out of the rigging apparatus. Ensure that the load of the chiller is evenly distributed and level during the move.
· Do not touch the heat exchanger fins during transport; there is a risk of physical injury.

The Limited Warranty will be null and void, and LG Electronics will not be responsible and will have no liability to any customer or third party to the extent any of the following occur: acts, omissions, and conduct of any and all third parties including, but not limited to, the installing contractor and any repairs, service or maintenance by unauthorized or unqualified personnel.
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, and / or property damage.
Do not install the chiller where it is exposed directly to ocean winds. Sea salt in the air will cause the product to corrode. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.
Do not install the chiller where there is an obstruction immediately above the unit. See installation clearances in this manual. If there is an obstruction immediately above the chiller, it can deflect the discharge air, where it can be re-circulated into the condenser coil inlet, causing operation malfunction.
Properly install and insulate the drain piping to ensure water is drained away properly. Improper installation can cause water to leak, causing a slippery surface condition and / or water damage.
Always check for system refrigerant leaks after the unit has been installed or serviced. Low refrigerant levels will cause product failure.
Do not make refrigerant substitutions. Use only the refrigerant specified in this manual. If a different refrigerant is used, or air mixes with original refrigerant, the unit will malfunction and damage will occur.

Do not store or use flammable gas/ combustibles near the unit. There is a risk of product failure.
Do not install the chiller in an environment with oil, steam, sulfuric smoke, etc. There is risk of a reduction in performance, malfunction, and / or product damage.
Keep the chiller level / upright during installation to avoid vibration and / or water leaks.
When installing the chiller near a hospital, mechanical room, or similar electromagnetic field (EMF) sensitive environment, provide sufficient protection against electrical noise. Inverter equipment, power generators, high-frequency medical equipment or radio communication equipment will cause the chiller to operate improperly. The chiller will also affect such equipment by creating electrical noise that disturbs medical treatment or image broadcasting.
Do not touch the heat exchanger fins; there is a risk of product damage and malfunction.
When connecting refrigerant piping, remember to allow for pipe expansion. Improper piping installation will cause system malfunction.
Do not install the chiller in a noise-sensitive area, or where hot air could damage surrounding structures.
Install the chiller in a safe location where no one can step on or fall onto it. Do not install the unit on a defective stand. There is a risk of unit and property damage.
Install the drain hose to ensure adequate drainage. There is a risk of water leakage and property damage.

6

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

SAFETY PRECAUTIONS

Safety Precautions

WIRING

DANGER
High voltage electricity is required to operate chiller. Adhere to the U.S. National Electric Codes (NEC) and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.
Always ground the unit following local, state, and NEC codes. There is risk of fire, electric shock, and physical injury or death.
Turn the power off before servicing the chiller. Ensure the power is completely off and out of all components. Electrical shock can cause physical injury or death.
Do not supply power to the unit until all electrical wiring, controls wiring, and piping installation are completed. There is risk of fire, electric shock, and physical injury or death. Properly size all circuit breakers, fuses and power wiring.

There is risk of fire, electric shock, explosion, physical injury or death if the electrical components are too small.
Do not share the electrical circuit with other devices. Ensure the chiller(s) has/have dedicated circuit(s) and breaker(s). There is risk of fire, electric shock, and physical injury or death due to heat generation.
Do not use damaged or loose power wiring. Do not modify or extend the chiller’s power wiring. Ensure that the power wiring will not be pulled nor weight be placed on the power wiring during operation. There is risk of fire, electric shock, and physical injury or death.

WARNING
The information contained in this manual is intended for use by an industry- qualified, experienced, trained electrician familiar with the NEC who is equipped with the proper tools and test instruments. Failure to carefully read and follow all instructions in this manual can result in personal injury or death.
All field wiring and component installation must be performed by a licensed electrician and conform to local building codes or, in the absence of local codes, with the NEC, and the instructions and wiring diagrams given in this manual. If the power source capacity is inadequate or the electric work is not performed properly, it will result in fire, electric shock, physical injury or death.

Secure all field wiring connections with appropriate wire strain relief. Improperly securing wires will create undue stress on equipment power connections. Inadequate connections will generate heat, cause a fire, and physical injury or death.
Ensure the system is connected to a dedicated power source that provides adequate power. If the power source capacity is inadequate or the electric work is not performed properly, it will result in fire, electric shock, physical injury or death.
Properly tighten all power connections. Loose wiring will overheat at connection points, causing a fire, physical injury or death.

Refer to local, state, and federal codes, and use power wires
of sufficient current capacity and rating. Wires that are too small will generate heat and cause a fire, and physical injury or death.

Do not change the settings of the protection devices.
If the protection devices have been bypassed or is forced to operate improperly, or parts other than those specified by LG are used, there is risk of fire, electric shock, explosion, and physical injury or death.

Do not supply power to the unit until all electrical wiring, controls wiring, and piping installation are completed. The system will malfunction.

The information contained in this manual is intended for use
by an industry-qualified, experienced, trained electrician familiar with the NEC who is equipped with the proper tools
and test instruments. Failure to carefully read and follow all instructions in this manual can result in equipment malfunction and property damage.

Due to our policy of continuous product innovation, some specifications may change without notification.

7

SAFETY PRECAUTIONS

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

OPERATION
DANGER
Service on this equipment is to be performed by an industry-qualified, experienced, trained technician familiar with operation, routine checks, maintenance, cleaning, safety hazards, and troubleshooting procedures. Failure to follow all instructions can result in personal injury or death.
Do not allow unauthorized personnel to operate, clean, and maintain the chiller. Keep unauthorized and / or untrained personnel away from the chiller. There is risk of fire, explosion, and physical injury or death.
Do not provide power to or operate the unit if it is flooded or submerged. There is risk of fire, electric shock, physical injury or death.
Use a dedicated breaker for this product. There is risk of fire, electric shock, physical injury or death.

Do not operate the disconnect switch with wet hands. There is risk of fire, electric shock, physical injury or death.
Periodically verify that the equipment mounts or the installation area have not deteriorated. If the mounts or area collapse, the chiller could fall and cause physical injury or death.
Use inert (nitrogen) gas when performing leak tests or air purges. Do not use compressed air, oxygen, or flammable gases. Using these substances will cause fire, explosion, and physical injury or death.
If refrigerant leaks, ventilate the area before operating the unit. If the chiller is mounted in an enclosed, low-lying, or poorly ventilated area, and it develops a refrigerant leak, it will cause a fire, electric shock, explosion, physical injury or death.

WARNING
Do not allow water, dirt, or animals to enter the unit. There is risk of fire, electric shock, physical injury or death.
Do not operate the chiller with the panel(s) or protective cover(s) removed; keep fingers and clothing away from moving parts. The rotating, hot, cold, and high-voltage parts of the unit can cause physical injury or death.
Do not touch the refrigerant piping during or after operation, or when checking the valves. It can cause burns or frostbite.

Do not open the inlet or touch the electrostatic filter (if so equipped) during operation. There is risk of electric shock, physical injury or death.
Do not insert hands or other objects in the air inlets or outlets while power is supplied to the chiller. Chiller has sharp and moving parts that will cause physical injury.
Qualified personnel must provide water circuit freeze protection. Follow industry standards and local, state, and federal when choosing and handling an antifreeze additive. If the water circuit freezes, the piping may burst and cause physical injury or death.

CAUTION
To avoid physical injury, use caution when cleaning or servicing the chiller. There is risk of electric shock, physical injury or death.

Service on this equipment is to be performed by an industry-qualified, experienced, trained technician familiar with operation, routine checks, maintenance, cleaning, safety hazards, and troubleshooting procedures. Failure to follow all instructions can result in product malfunction.
Clean up the site after servicing is finished, and check that no metal scraps, screws, or bits of wiring have been left inside or surrounding the chiller.
Do not use the product for mission critical or special purpose applications such as preserving food, works of art, or other precision air conditioning applications. The equipment is designed to provide comfort cooling and heating. There is risk of property damage.
Do not allow water, dirt, or animals to enter the unit. There is risk of unit failure.
Do not open the inlet or touch the electrostatic filter (if so equipped) during operation. There is risk of unit failure.
Do not operate the chiller with the panel(s) or protective cover(s) removed; keep fingers and clothing away from moving parts. Non-secured covers can result in malfunction due to dust or water.

Provide power to the chiller at least six (6) hours before operation begins. Starting operation immediately after turning on the main power switch will result in severe damage to internal components. Keep the power switch on during the operational season.
Do not turn off the main power switch immediately after operation has been stopped. Wait at least five (5) minutes before turning off the main power switch, otherwise it will result in product malfunction and / or damage.
If re-operating the chiller after it has been in low temperature condition for an extended period, the touch function temporarily may not work. Wait, and after time, the product will function normally.
Do not block the inlet or outlet. Chiller will malfunction.
Qualified personnel must provide water circuit freeze protection. Follow industry standards and local, state, and federal when choosing and handling an antifreeze additive. If the water circuit freezes, it can cause product damage. Also, an improper antifreeze additive can damage copper piping.

8

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

SAFETY PRECAUTIONS

Safety Precautions

R32

This symbol indicates that this chiller uses a

flammable refrigerant. If the refrigerant is leaked and expo-

sure to an external ignition source, there is a risk of fire.

Freeze Protection
When operating in a low-temperature type (water outlet temperature : less than 4 °C (39.2 °F)), you must inject antifreeze and manage the concentration of the antifreeze at a freezing
temperature of -15 °C (5 °F) or less. Do not use a heating medium other than the specified antifreeze.

Use ethylene glycol-based or propylene glycol-based an-
tifreeze, and confirm required concentration meets design requirements. This concentration shall be confirmed once per year. Otherwise, it may cause fire or explosion.

There must be no obstruction above the unit.
It would deflect discharge air downward where it could be re-circulated 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.

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.

The door must be locked when the product is connected to power.
Use power cables of sufficient current carrying capacity and rating. Cables that are too small may leak, generate heat, and cause a fire.
Turn on the power at least 24 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 operate the product with the panels or guards removed. Rotating, hot, or high-voltage parts can cause injuries.
Field wiring must be installed according to unit wiring diagram. May cause serious damage to electrical components.
When the outdoor temperature in season is below 41 °F, take measures to prevent freezing of water pipes. Freeze protection measures such as antifreeze injection, heater operation, and pump operation are required.
When disposing of antifreeze or cleaning fluid, please dispose of it in accordance with relevant laws and regulations. Disposal without complying with relevant laws may adversely affect the environment or health.
Do not use an automotive 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.
Any changes to these parameters must be determined and 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.

Do not install the unit in potentially explosive atmospheres.
After installing or inspecting the product, make sure to lock the door with the key.

Due to our policy of continuous product innovation, some specifications may change without notification.

9

SAFETY PRECAUTIONS

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

WARNING
R32 Refrigerant Safety
Do not use means to accelerate the defrosting process. Only use means that are recommended by the manufacturer.
The chiller shall be stored in a well-venilated area, where the size of the storage area per chiller is compliant with local fire and safety codes.
The chiller shall be stored in a room without continuously operating open flames (for example an operating gas chiller) and ignition sources (for example an operating electric heater).
Do not pierce or burn.
Be aware that refrigerants may not contain an odor.
Keep any required ventilation openings clear of obstruction.
The chiller shall be stored so as to prevent mechanical damage from occurring.
The manufacturer should specify other potential continuously operating sources known to cause ignition of the refrigerant used.
Compliance with national gas regulations shall be observed.
Refrigerant tubing shall be protected or enclosed to avoid damage.
A brazed, welded, or mechanical connection shall be made before opening the valves to permit refrigerant to flow between refrigeration system parts.
Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorizes the agent to handle refrigerants safely in accordance with an industry recognised assessment specification.
Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.
The removal and disposal of refrigerant oil and associated parts shall be in accordance with local and national standards.
Checks to the area Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is mini-

mised. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system.
Work procedure Work shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or vapour being present while the work is being performed.
General work area All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. Work in confined spaces shall be avoided.
Checking for presence of refrigerant The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. nonsparking, adequately sealed or intrinsically safe.
Presence of fire extinguisher If any hot work is to be conducted on the refrigerating equipment or any associated parts,appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
No ignition sources No person carrying out work in relation to a refrigerating system which involves exposing any pipe work that contains or has contained flammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion.
All possible ignition sources, including cigarette smoking, shall be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which flammable refrigerant can possibly be released to the surrounding space.
Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks. “No Smoking” signs shall be displayed.
Checks to the refrigeration equipment Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt consult the manufacturer’s technical department for assistance.
The following checks shall be applied to installations using flammable refrigerants: The actual refrigerant charge is in accordance with the room size within which the refrigerant containing parts are installed.
The ventilation machinery and outlets are operating adequately and are not obstructed.
If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant.
Marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected.

10

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

SAFETY PRECAUTIONS

Safety Precautions

Refrigerant pipe and components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to corrosion or are suitably protected against corrosion.
Checks to electrical devices Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be used. This shall be reported to the owner of the equipment so all parties are advised.
Initial safety checks shall include: Capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking.
No live electrical components and wiring are exposed while charging, recovering or purging the system. Continuity of earth bonding.
Repairs to sealed components During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc.
If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation.
Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in such a way that the level of protection is affected.
This shall include damage to cables, excessive number of connections, terminals not made to original specification, damage to seals, incorrect fitting of glands, etc.
Ensure that apparatus is mounted securely. Ensure that seals or sealing materials have not degraded such that they no longer serve the purpose of preventing the ingress of flammable atmospheres.
Replacement parts shall be in accordance with the manufacturer’s specifications.
Repair to intrinsically safe components Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the equipment in use.
Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere.
The test apparatus shall be at the correct rating. Replace components only with parts specified by the manufacturer. Other parts may result in the ignition of refrigerant in the atmosphere from a leak.

NOTE: The use of silicon sealant can inhibit the effectiveness of some types of leak detection equipment. Intrinsically safe components do not have to be isolated prior to working on them.
Decommissioning Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail.
It is recommended good practice that all refrigerants are recovered safely.
Prior to decommissioning, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recovered refrigerant. It is essential that electrical power is available before the task is commenced.
a) Become familiar with the equipment and its operation. b) Isolate system electrically. c) Before attempting the procedure ensure that: – Mechanical handling equipment is available, if required, for handling refrigerant cylinders – All personal protective equipment is available and used correctly – The recovery process is supervised at all times by a competent person – Recovery equipment and cylinders conform to the appropriate standards. d) Pump down refrigerant system, if possible. e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system. f) Make sure that cylinder is situated on the scales before recovery takes place. g) Start the recovery machine and operate in accordance with manufacturer’s instructions. h) Do not overfill cylinders. (No more than 80 % volume liquid charge). i) Do not exceed the maximum working pressure of the cylinder, even temporarily. j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off. k) Recovered refrigerant shall not be charged into another refrigerating system unless it has been cleaned and checked.
Labeling Equipment shall be labeled stating that it has been de-commissioned and refrigerant has been emptied. The label shall be dated and signed. Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.
Ventilated area Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
Cabling Cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check

Due to our policy of continuous product innovation, some specifications may change without notification.

11

SAFETY PRECAUTIONS

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.
Detection of flammable refrigerants Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.
Leak detection methods The following leak detection methods are deemed acceptable for systems containing flammable refrigerants.
Electronic leak detectors shall be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used.
Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed and the appropriate percentage of gas (25 % maximum) is confirmed.
Leak detection fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work. NOTE: Examples of leak detection fluids are: – bubble method – fluorescent method agents If a leak is suspected, all naked flames shall be removed/extinguished. If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak. Removal of refrigerant shall be according to removal and evacuation procedure.
Removal and evacuation When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, for flammable refrigerants it is important that best practice be followed, since flammability is a consideration. The following procedure shall be adhered to: a) safely remove refrigerant following local and national regulations; b) purge the circuit with inert gas; c) evacuate (optional for A2L); d) purge with inert gas (optional for A2L); e) open the circuit by cutting or brazing.
The refrigerant charge shall be recovered into the correct recovery cylinders if venting is not allowed by local and national codes. For chillers containing flammable refrigerants, the system shall be purged with oxygen-free nitrogen to render the chiller safe for flammable refrigerants. This process might need to be repeated several times. Compressed air or oxygen shall not be used for purging refrigerant systems.
For chillers containing flammable refrigerants, refrigerants purging shall be achieved by breaking the vacuum in the system with oxygen-free nitrogen and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum (optional for A2L). This process shall be repeated until no refrigerant is within the system (optional for A2L). When the final oxygen-free nitrogen charge

is used, the system shall be vented down to atmospheric pressure to enable work to take place. Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and that ventilation is available.
Charging procedures In addition to conventional charging procedures, the following requirements shall be followed. – Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in them. – Cylinders shall be kept in an appropriate position according to the instruction. – Ensure that the refrigerating system is earthed prior to charging the system with refrigerant. – Label the system when charging is complete (if not already). – Extreme care shall be taken not to overfill the refrigerating system. Prior to recharging the system, it shall be pressure tested with the appropriate purging gas. The system shall be leak- tested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving the site.
Recovery When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.
Ensure that the correct number of cylinders for holding the total system charge are available.
All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of refrigerant).
Cylinders shall be complete with pressure relief valve and associated shut-off valves in good working order.
Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs. The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order.
Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release.
Consult manufacturer if in doubt. The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant Waste Transfer Note arranged.
Do not mix refrigerants in recovery units and especially not in cylinders. If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant.

12

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

SAFETY PRECAUTIONS

The evacuation process shall be carried out prior to returning the compressor to the suppliers. Only electric heating to the compressor body shall be employed to accelerate this process. When oil is drained from a system, it shall be carried out safely.
Qualification of workers The manual shall contain specific information about the required qualification of the working personnel for maintenance, service and repair operations. Every working procedure that affects safety means shall only be carried out by competent persons according to Annex HH. Examples for such working procedures are: – Breaking into the refrigerating circuit; – Opening of sealed components; – Opening of ventilated enclosures.
Mechanical connections (mechanical connectors or flared joints) shall be accessible for maintenance purposes.
When mechanical connectors are reused indoors, sealing parts shall be renewed. When flared joints are reused indoors, the flare part shall be re-fabricated.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
Flexible pipe elements shall be protected against mechanical damage, excessive stress by torsion, or other forces. They should be checked for mechanical damage annually.
Protection devices, piping and fittings shall be protected as far as possible against adverse environmental effects. For example, the danger of water collecting and freezing in relief

pipes or the accumulation of dirt and debris.
Precautions shall be taken to avoid excessive vibration or pulsation to refrigerating piping.
Piping in refrigerating systems shall be so designed and installed to minimize the likelihood hydraulic shock damaging the system.
Provision shall be made for expansion and contraction of long runs of piping.
· Steel pipes and components shall be protected against corrosion with a rustproof coating before applying any insulation.
Servicing shall be performed only as recommended by the manufacturer.
· Piping material, pipe routing, and installation shall include protection from physical damage in operation and service, and be in compliance with national and local codes and standards, such as ASHRAE 15, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA B52. All field joints shall be accessible for inspection prior to being covered or enclosed.

Safety Precautions

Due to our policy of continuous product innovation, some specifications may change without notification.

13

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

UNIT NOMENCLATURE

KC H

H 020 B

B

A

Family AC = R410A / Chiller KC = R32 Chiller
Cooling Type A = Air Cooled, Cooling Only W = Water Cooled, Cooling Only H = Air Cooled, Heat Pump K = Water Cooled, Heat Pump

Compressor Type H = High Pressure Scroll

Capacity (RT) 017 = 17RT 020 = 20 RT 033 = 33 RT

040 = 40 RT 050 = 50 RT 060 = 60 RT

Power Specifications : H = 460V / 60 Hz / 3Ø (KCHH) V = 208-230V / 60 Hz / 3Ø (KCHH)

Model Type A = Module Model B, D, E = Independent Model C = Slave Model Evaporator A, G = Direct Exchange Type (DX) Type (Plate)

Generation

14

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

Product Data

INTRODUCTION

General Information

Figure 1: Example of an LG Chiller.

The LG Inverter Scroll Heat Pump Chiller provides both cold water and hot water for heating and cooling application. The KCHH Chiller is an air cooled R32 system with a wide range of approved air side and water side operating conditions. The KCHH is a single unit product produced in 3 frame sizes; a 20 ton (2-compressors), 40 ton (4 compressors) and 60 ton (6 compressors). This single unit is designed to be used in a modular concept to provide a much larger capacity.

Fan Motor
Condenser Cover

Fin and Tube Heat Exchanger

The LG HMI (Human Machine Interface) or chiller control is capable of controlling up to 5 single units as one system. The KCHH Chiller is engineered by LG with inverter technology in its compressors and BLDC variable speed condenser fan motors that provide low noise operation and electronic expansion valves for precise load control. The KCHH system is designed with a plate type evaporator heat exchanger connecting to the water side and a fin in tube air cooled condenser coil design.

Sub-Controller Box
Main Controller Box

Side Cover
Forklift Access Lifting Strap Support Access

The KCHH basis of design is to provide independent refrigerant circuits per each 10 ton compressor and a shared evaporator on the water side only for each 20 tons of capacity. The KCHH is provided with LG’s unique control logic to monitor and control necessary parameters providing improved operational efficiency. The load requirements will change due to flow, set point or ambient conditions and LG’s greatest strength of design is the ability to match this the capacity that is required during operation to exactly what is needed. The LG KCHH Inverter Scroll Heat Pump Chiller is a commercial/industrial product.

Cooling and Heat Pump Heating Cycle
KCHH LG Inverter Scroll Heat Pump Chillers feature high-pressure shell type scroll compressors. The suction vapor area is separated from the high-pressure discharge area, and the motor is installed on the low-pressure vapor area. Space for the motor and storage for refrigerant is secured in the low-pressure vapor area to increase liquid compression reliability.
Inside the system, oil to lubricate the compressor is mixed with the refrigerant to discharge both the oil and refrigerant during operation. Because the oil discharged from the compressor can reduce the heat transfer efficiency when a thick layer builds up on interior walls of the condenser and evaporator, a 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 lower sound operation.
The heat exchanger is an air-cooled fin and tube type. The condenser is designed with a V-shaped heat exchanger, and an electronic expansion valve is used for efficient control in all load conditions. The controller used in the chiller is an LG exclusive, and monitors the different sensors installed to provide product protection.
For continuous supply of cold and hot water, LG chillers are equipped with maximum continuous operation functions, and also provide precision control to supply the accurate targeted water temperature set points in heating and cooling modes.. Protection devices will immediately stop the chiller if the operation malfunctions, or a condition limit is reached. In case of an operation malfunction, the chiller controller will display error codes to the authorized LG service provider.
Error codes are available on site by looking at the HMI or available via 3rd party integration as a viewable point. The KCHH has a “Black Box” that a stores a run file that can be reviewed by the LGMV Service Software for a very detailed look providing key information on what caused the error.

Due to our policy of continuous product innovation, some specifications may change without notification.

15

INTRODUCTION

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

Refrigeration Cycle Description Figure 2: LG Chiller Pressure-Enthalpy Diagram.

The cooling cycle of KCHH series can be described using the following pressureenthalpy chart., , , , and in the following chart shows the conditions of
the refrigerant. The refrigerant comes into the compres-

Pressure

Hot-Gas

sor and moves to the internal suction inlet section of the

compressor. The oil inside the compressor seals the gap

between the compressor scrolls and provides lubrication

Suction – Compressor

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

Enthalpy

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 shell and tube 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 flow is in the reverse

direction to provide hot water.

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 a part of the oil will be mixed with the refrigerant to be circulated within the cycle.

Partial Load Operation
Each cooling cycle operates independently; one (1) cooling cycle includes two (2) inverter compressors.
Two (2) inverter compressors increase the rpm after initial start to gradually increase the capacity. The end user will experience smooth operation of the LG KCHH chiller as the capacity required is matched to the required load. The LG KCHH will out perform staging systems and the variance in loop temperature is reduced with the liner performance of the KCHH compressors. LG KCHH chillers have efficient partial load performance.
Continuous operation at a capacity less than 20% of total capacity is not guaranteed. System could enter into a safety run mode and begin to cycle off compressors if the temperature difference between entering water and leaving water is less then 4 degrees Fahrenheit. The system will allow the difference in the entering water and leaving water to increase above 4 degrees Fahrenheit and then run at a minimum capacity at or above 20% of total capacity. If loop temperature is extremely critical and run conditions below 20% of total capacity are possible the engineer should provide enough storage and increase the total loop design to off set this potential.

Figure 3: Partial Load Operation Diagram.

Cooling Capacity

Inverter Compressor 1

Inverter Compressor 2

Capacity (%)

100% 80% 60% 40% 20%

40% 60% 80%

100% Load (%)

Cooling capacitSytatic speed compressor 1

16

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

SPECIFICATIONS

Product Data

Table 1: Specification Data for 208-230V KCHH Heat Pump Chiller, Page 1.

Inverter Scroll Chiller

Power

Capacity

Cooling

Heang

Input Power

Cooling Heang

Efficiency

Cooling (44°F LWT, 10°, 95°F DB) Heang (120 F LWT,15 , 47 F DB)

Cooling IPLV Cerfied to AHRI 550-590

Sound Power

Cooling

Sound Pressure 30′

Cooling

Sound Pressure 5′

Cooling

Sound Power Sound Pressure 30′ Sound Pressure 5′

Heang Heang Heang

Type

Compressor

No. of Compressors Oil Type

Oil Charge Each Compressor

Refrigerant

Type Amount of Charge EA Circuit

Condenser Coil

Coated Aluminum Fin and Tube

Type

Quanty PD (Cooling 10°/ Heang 15°)

Operang Maximum Pressure

(Refrigerant/Water)

Evaporator

Refrigerant Volume (EA.) Rated Cooling Water Flow (10°)

Cooling Water Flow (Min-Max)

Heang Water Flow (15°)

Heang Water Flow (Min-Max)

Inlet/Outlet Water Connecon

Total System Water Volume

Type

No. of Fan Motors

Fan Motor

No. of Blades per Fan

Max Air Flow Rate

Motor Power

Refrigerant Metering

Type

Gross Weight

W

Dimensions

H

D

Foot Print

Exterior Panel

High/Low Pressure Switch

Protecon Devices

Flow Switch

Freeze Protecon

Remote Monitoring and Control

Supply Water Temperature

Cooling

Range

Heang

Approved Water Delta T

Cooling and Heang

Ambient Temperature

Cooling

Operaonal Range

Heang

Guaranteed Load Capacity Range

Model
Phase, Lines, V, Hz RT
kBtuh/h MBH kW kW
EER (btuh/W) COP (W/W) IPLV (btuh/W)
dB(A) dB(A) dB(A) dB(A) dB(A) dB(A)
EA
OZ/EA
lbs/EA 10,000 HRS ASTMB-117
EA Aq
PSI
³ GPM GPM GPM GPM inches/flange gal
EA EA CFM W
lbs inches inches inches 2/RT Epoxy Powder Coat Electronic Paddle/ADJ. On/Off Contact Only Type
F F F F F %

KCHH017VDGC H/P
16.2 194 214.5 17.8 17.4 10.92 3.62 20.13 83 51 69 83 56 69
2
33.8
(10.4 x 2) 2
1 6.23/4.52
597/142
2 x (.18) 38.9
19.4 – 97 28.6
18.4 – 107.3 2″/150 lb
2.68
2 6 8684 900
1138 30 1/8 86 5/8 84 13/16 1.09

1. Due to our policy innovaons some specificaon may be changed without prior noficaon. 2. AHRI 550-590 Cooling Capacity Condions: 95F Ambient Air, 54F EWT and 44F LWT. 3. AHRI 550-590 Medium Temp 120F LWT Heang Capacity Test Condion. 4. Sound Power Tested per ANSI/AHRI Standard 370-2015 (Based on individual systems)

KCHH020VDGC KCHH033VDGC

H/P

3,3,208-230,60

18.5

32.4

222

389

250.3

429

20.8

35.6

20.8

34.7

10.65

10.92

3.53

3.62

20.13

83

86

56

59

71

72

83

86

56

59

71

72

Inverter Scroll

2

4

PVE

33.8

R32

(10.4 x 2)

(10.4 X4)

2

4

Stainless Brazed Plate

1

2

7.15/5.31

6.23/4.52

597/142

2 x (.18)

4 x (.18)

44.4

77.8

22.2 – 111

38.8 – 194

33.4

57.2

18.7 – 125.1

36.9 – 214.5

2″/150lb

2 1/2″/150lb

2.68

7.91

Variable BLDC

2

4

6

8684

900

2000 Step Electronic Expansion Valve

1138

2169

30 1/8

60 5/8

86 5/8

84 13/16

0.96

1.09

Rated at 450 HRS per ASTMB-117

Internal

Heat Trace Elements and Power by Others

(Oponal BACnet Gateway) 14-68

86*-140

04-20

5-125

-22-95

20-100

KCHH040VDGC H/P
37 444 500.6 41.7 41.6 10.65 3.53 20.13 86 60 74 86 59 74
4
33.8
(10.4 x 4) 4
2 7.15/5.31
597/142
4 x (.18) 88.7
44.4 – 222 66.7
37.3 – 250.3 2 1/2″/150lb
7.91
4 6 8684 900
2169 60 5/8
86 5/8 84 13/16
0.96

5. Sound Pressure Values provided based on Q=2 180 degree profile.

6. The KCHH***VDGC models are cerfied by AHRI to AHRI Standard 550-590. 7. For the laes version of Cerfied LATS ISC Selecon Soware go to, www.ahridirectory.org 8. Heang Performance Tested per the AHRI 550-590 procedure. Heang Performance is not in cerficaon scope of AHRI 550-590. 9. This product contains (R32, GWP:677t-CO2 eq = F-gas (kg) x GWP / 1000).

Lower EWT down to 46°F available upon special configuaon.

Due to our policy of continuous product innovation, some specifications may change without notification.

17

SPECIFICATIONS

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

Table 1: Specification Data for 208-230V KCHH Heat Pump Chiller, page 2.

Inverter Scroll Chiller

Power

Capacity

Cooling

Heang

Input Power

Cooling Heang

Efficiency

Cooling (44°F LWT, 10°, 95°F DB) Heang (120 F LWT,15 , 47 F DB)

Cooling IPLV Cerfied to AHRI 550-590

Sound Power

Cooling

Sound Pressure 30′

Cooling

Sound Pressure 5′

Cooling

Sound Power Sound Pressure 30′ Sound Pressure 5′

Heang Heang Heang
Type

Compressor

No. of Compressors Oil Type

Oil Charge Each Compressor

Refrigerant

Type Amount of Charge EA Circuit

Condenser Coil

Coated Aluminum Fin and Tube

Type

Quanty PD (Cooling 10°/ Heang 15°)

Operang Maximum Pressure (Refrigerant/Water)

Evaporator

Refrigerant Volume (EA.) Rated Cooling Water Flow (10°)

Cooling Water Flow (Min-Max)

Heang Water Flow (15°) Heang Water Flow (Min-Max) Inlet/Outlet Water Connecon
Total System Water Volume

Type

No. of Fan Motors

Fan Motor

No. of Blades per Fan

Max Air Flow Rate

Motor Power

Refrigerant Metering

Type

Gross Weight

W

Dimensions

H

D

Foot Print

Exterior Panel

High/Low Pressure Switch

Protecon Devices

Flow Switch

Freeze Protecon

Remote Monitoring and Control

Supply Water Temperature

Cooling

Range

Heang

Approved Water Delta T

Cooling and Heang

Ambient Temperature

Cooling

Operaonal Range

Heang

Guaranteed Load Capacity Range

Model
Phase, Lines, V, Hz RT
kBtuh/h MBH kW kW
EER (btuh/W) COP (W/W) IPLV (btuh/W)
dB(A) dB(A) dB(A) dB(A) dB(A) dB(A)
EA
OZ/EA
lbs/EA 10,000 HRS ASTMB-117
EA Aq

KCHH050VDGC KCHH060VDGC

H/P

3,3,208-230,60

48.7

55.5

584

666

643.6

750.9

53.5

62.5

52.1

62.3

10.92

10.65

3.62

3.53

20.13

87

88

61

74

76

87

88

61

74

76

Inverter Scroll

6

PVE

33.8

R32

(10.4 x 6)

6

Stainless Brazed Plate

3

6.23/4.52

7.15/5.31

PSI

597/142

³ GPM GPM GPM GPM inches/flange gal
EA EA CFM W
lbs inches inches inches 2/RT Epoxy Powder Coat Electronic Paddle/ADJ. On/Off Contact Only Type
F F F F F %

6 x (.18)

116.7

133.1

58.2 – 291

6.66 – 333

85.8

100.1

55.4 – 321.8

56 – 375.4

2 1/2″/150lb 14.48

Variable BLDC

6

8684

900

2000 Step Electronic Expansion Valve

3137 90 13/16
86 5/8 84 13/16

1.09

0.96

Rated at 450 HRS per ASTMB-117 Internal

Internal

Heat Trace Elements and Power by Others

(Oponal BACnet Gateway) 14-68

86*-140

04-20

5-125

-22-95

20-100

1. Due to our policy innovaons some specificaon may be changed without prior noficaon. 2. AHRI 550-590 Cooling Capacity Condions: 95F Ambient Air, 54F EWT and 44F LWT. 3. AHRI 550-590 Medium Temp 120F LWT Heang Capacity Test Condion. 4. Sound Power Tested per ANSI/AHRI Standard 370-2015 (Based on individual systems)

5. Sound Pressure Values provided based on Q=2 180 degree profile.

6. The KCHH***VDGC models are cerfied by AHRI to AHRI Standard 550-590. 7. For the laes version of Cerfied LATS ISC Selecon Soware go to, www.ahridirectory.org 8. Heang Performance Tested per the AHRI 550-590 procedure. Heang Performance is not in cerficaon scope of AHRI 550-590.

9. This product contains (R32, GWP:677t-CO2 eq = F-gas (kg) x GWP / 1000).

Lower EWT down to 46°F available upon special configuaon.

18

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

SPECIFICATIONS

Product Data

Table 2: Specification Data for 460V Heat Pump Chiller.

Inverter Scroll Chiller

Model

KCHH017HDGC H/P

Power

Phase, Lines, V, Hz

Capacity

Cooling

RT

16.2

kBtuh/h

194

Heang

MBH

214.5

Input Power

Cooling Heang

kW

17.8

kW

17.4

Efficiency

Cooling (44°F LWT, 10°, 95°F DB) Heang (120 F LWT,15 , 47 F DB)

EER (btuh/W) COP (W/W)

10.92 3.62

Cooling IPLV Cerfied to AHRI 550-590

IPLV (btuh/W)

20.13

Sound Power

Cooling

dB(A)

83

Sound Pressure 30′

Cooling

dB(A)

51

Sound Pressure 5′

Cooling

dB(A)

69

Sound Power

Heang

dB(A)

83

Sound Pressure 30′

Heang

dB(A)

56

Sound Pressure 5′

Heang

dB(A)

69

Type

Compressor

No. of Compressors

EA

Oil Type

2

Oil Charge Each Compressor

OZ/EA

33.8

Refrigerant

Type Amount of Charge EA Circuit

lbs/EA

(10.4 x 2)

Condenser Coil

Coated Aluminum Fin and Tube

10,000 HRS ASTMB-117

2

Type

Quanty

EA

1

PD (Cooling 10°/ Heang 15°)

Aq

6.23/4.52

Operang Maximum Pressure (Refrigerant/Water)

PSI

597/142

Evaporator

Refrigerant Volume (EA.) Rated Cooling Water Flow (10°)

³ GPM

2 x (.18) 38.9

Cooling Water Flow (Min-Max)

GPM

19.4 – 97

Heang Water Flow (15°)

GPM

28.6

Heang Water Flow (Min-Max)

GPM

18.4 – 107.3

Inlet/Outlet Water Connecon

inches/flange

2″/150 lb

Total System Water Volume

gal

2.68

Type

No. of Fan Motors

EA

2

Fan Motor

No. of Blades per Fan

EA

6

Max Air Flow Rate

CFM

8684

Motor Power

W

900

Refrigerant Metering

Type

Gross Weight

lbs

1138

W

inches

30 1/8

Dimensions

H

inches

86 5/8

D

inches

84 13/16

Foot Print

2/RT

1.09

Exterior Panel

Epoxy Powder Coat

High/Low Pressure Switch

Electronic

Protecon Devices

Flow Switch

Paddle/ADJ.

Freeze Protecon

On/Off Contact Only

Remote Monitoring and Control

Type

Supply Water Temperature

Cooling

F

Range

Heang

F

Approved Water Delta T

Cooling and Heang

F

Ambient Temperature

Cooling

F

Operaonal Range

Heang

F

Guaranteed Load Capacity Range

%

1. Due to our policy innovaons some specificaon may be changed without prior noficaon.

2. AHRI 550-590 Cooling Capacity Condions: 95F Ambient Air, 54F EWT and 44F LWT.

3. AHRI 550-590 Medium Temp 120F LWT Heang Capacity Test Condion.

4. Sound Power Tested per ANSI/AHRI Standard 370-2015 (Based on individual systems)

KCHH020HDGC KCHH033HDGC

H/P

3,3,460,60

18.5

32.4

222

389

250.3

429

20.8

35.6

20.8

34.7

10.65

10.92

3.53

3.62

20.13

83

86

56

59

71

72

83

86

56

59

71

72

Inverter Scroll

2

4

PVE

33.8

410A

(10.4 x 2)

(10.4 X4)

2

4

Stainless Brazed Plate

1

2

7.15/5.31

6.23/4.52

597/142

2 x (.18)

4 x (.18)

44.4

77.8

22.2 – 111

38.8 – 194

33.4

57.2

18.7 – 125.1

36.9 – 214.5

2″/150lb

2 1/2″/150lb

2.68

7.91

Variable BLDC

2

4

6

8684

900

2000 Step Electronic Expansion Valve

1138

2169

30 1/8

60 5/8

86 5/8

84 13/16

0.96

1.09

Rated at 450 HRS per ASTMB-117

Internal

Heat Trace Elements and Power by Others

(Oponal BACnet Gateway)

14-68

86*-140

04-20

5-125

-22-95

20-100

KCHH040HDGC H/P
37 444 500.6 41.7 41.6 10.65 3.53 20.13 86 60 74 86 59 74
4
33.8
(10.4 x 4) 4
2 7.15/5.31
597/142
4 x (.18) 88.7
44.4 – 222 66.7
37.3 – 250.3 2 1/2″/150lb
7.91
4 6 8684 900
2169 60 5/8 86 5/8 84 13/16
0.96

5. Sound Pressure Values provided based on Q=2 180 degree profile.

6. The KCHH***HDGC models are cerfied by AHRI to AHRI Standard 550-590. 7. For the laes version of Cerfied LATS ISC Selecon Soware go to, www.ahridirectory.org 8. Heang Performance Tested per the AHRI 550-590 procedure. Heang Performance is not in cerficaon scope of AHRI 550-590. 9. This product contains (R32, GWP:677t-CO2 eq = F-gas (kg) x GWP / 1000).

Lower EWT down to 46°F available upon special configuaon.

Due to our policy of continuous product innovation, some specifications may change without notification.

19

SPECIFICATIONS

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

Table 2: Specification Data for 460V Heat Pump Chiller, page 2.

Inverter Scroll Chiller

Model

KCHH050HDGC H/P

KCHH060HDGC H/P

Power

Phase, Lines, V, Hz

3,3,460,60

Capacity

Cooling

RT kBtuh/h

48.7

55.5

584

666

Heang

MBH

643.6

750.9

Input Power

Cooling Heang

kW

53.5

62.5

kW

52.1

62.3

Efficiency

Cooling (44°F LWT, 10°, 95°F DB) Heang (120 F LWT,15 , 47 F DB)

EER (btuh/W) COP (W/W)

10.92 3.62

10.65 3.53

Cooling IPLV Cerfied to AHRI 550-590

IPLV (btuh/W)

20.13

Sound Power

Cooling

dB(A)

87

88

Sound Pressure 30′

Cooling

dB(A)

61

Sound Pressure 5′

Cooling

dB(A)

74

76

Sound Power

Heang

dB(A)

87

88

Sound Pressure 30′

Heang

dB(A)

61

Sound Pressure 5′

Heang

dB(A)

74

76

Type

Inverter Scroll

Compressor

No. of Compressors

EA

Oil Type

6

PVE

Oil Charge Each Compressor

OZ/EA

33.8

Refrigerant

Type Amount of Charge EA Circuit

lbs/EA

410A

(10.4 x 6)

Condenser Coil

Coated Aluminum Fin and Tube

10,000 HRS ASTMB-117

6

Type

Stainless Brazed Plate

Quanty

EA

3

PD (Cooling 10°/ Heang 15°)

Aq

6.23/4.52

7.15/5.31

Operang Maximum Pressure (Refrigerant/Water)

PSI

597/142

Evaporator

Refrigerant Volume (EA.) Rated Cooling Water Flow (10°)

³ GPM

6 x (.18) 116.7

6 x (.18) 133.1

Cooling Water Flow (Min-Max)

GPM

58.2 – 291

6.66 – 333

Heang Water Flow (15°)

GPM

85.8

100.1

Heang Water Flow (Min-Max)

GPM

55.4 – 321.8

56 – 375.4

Inlet/Outlet Water Connecon Total System Water Volume

inches/flange gal

2 1/2″/150lb 14.48

Type

Variable BLDC

No. of Fan Motors

EA

6

Fan Motor

No. of Blades per Fan

EA

6

Max Air Flow Rate

CFM

8684

Motor Power

W

900

Refrigerant Metering

Type

2000 Step Electronic Expansion Valve

Gross Weight

lbs

3137

W

inches

90 13/16

Dimensions

H

inches

86 5/8

D

inches

84 13/16

Foot Print

2/RT

1.09

0.96

Exterior Panel

Epoxy Powder Coat

Rated at 450 HRS per ASTMB-117

High/Low Pressure Switch

Electronic

Internal

Protecon Devices

Flow Switch Freeze Protecon

Paddle/ADJ. On/Off Contact Only

Internal Heat Trace Elements and Power by Others

Remote Monitoring and Control

Type

(Oponal BACnet Gateway)

Supply Water Temperature

Cooling

F

14-68

Range

Heang

F

86*-140

Approved Water Delta T

Cooling and Heang

F

04-20

Ambient Temperature

Cooling

F

5-125

Operaonal Range

Heang

F

-22-95

Guaranteed Load Capacity Range

%

20-100

1. Due to our policy innovaons some specificaon may be changed without prior noficaon.

2. AHRI 550-590 Cooling Capacity Condions: 95F Ambient Air, 54F EWT and 44F LWT.

3. AHRI 550-590 Medium Temp 120F LWT Heang Capacity Test Condion.

4. Sound Power Tested per ANSI/AHRI Standard 370-2015 (Based on individual systems)

5. Sound Pressure Values provided based on Q=2 180 degree profile.

6. The KCHH***HDGC models are cerfied by AHRI to AHRI Standard 550-590. 7. For the laes version of Cerfied LATS ISC Selecon Soware go to, www.ahridirectory.org 8. Heang Performance Tested per the AHRI 550-590 procedure. Heang Performance is not in cerficaon scope of AHRI 550-590. 9. This product contains (R32, GWP:677t-CO2 eq = F-gas (kg) x GWP / 1000).

Lower EWT down to 46°F available upon special configuaon.

20

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

ELECTRICAL DATA

Table 3: Electrical Data for KCHH 208-230V and 460V.

KCHH0***DGC Voltage

017

460

020

460

033 H

460

040

460

050

460

060

460

017

208-230

020

208-230

033

208-230

040 V 208-230

050

208-230

Voltage range
391~529 391~529 391~529 391~529 391~529 391~529 177~239 177~239 177~239 177~239

MCA
40.0 44.0 80.0 88.0 120.0 132.0 80.0 8.00 160.0 160.0

MFA
45.0 50.0 90.0 100.0 150.0 150.0 90.0 90.0 175.0 175.0

COMP
MSC RLA
25.2 31.2 25.2 36.8 50.4 62.4 50.4 73.6 75.6 93.6 75.6 110.4 25.2 67.6 25.2 67.8 50.4 135.2 50.4 135.6

177~239 160.0+80.0 175.0+90.0 75.6 202.8

Fan Motor kW RLA 3.0 2.0 3.0 2.0 6.0 4.0 6.0 4.0 9.0 6.0 9.0 6.0 1.8 2.6 1.8 2.6 3.6 5.2 3.6 5.2
5.4 7.8

Frequency Input Power

(Hz)

(kW)

17.8

20.8

35.6

41.7

53.4

62.5

60

17.8

20.8

35.6

41.7

53.4

060

208-230 177~239 160.0+80.0 175.0+90.0 75.6 203.4 5.4 7.8

62.5

Voltage Range: Power supplied to the chiller must fall within the voltage minimum to maximum range listed in the table above. The chiller will not operate normally if the power supply voltage falls below or above the tolerance range.
Maximum allowable voltage variance permitted between phases is 2%.
MCA: Minimum Circuit Ampacity (A) (Criteria used to select the wiring standard).
MFA: Maximum Fuse Amps (A) (Criteria used to select circuit breaker and ground error circuit breaker [electricity leakage circuit breaker]).
MSC: Maximum Start Current (A)

RLA: Rated Load Amps (A) (Current required when operating under the following conditions–Cooling: Outdoor Air Temperature: 8°1F DB / 66°F WB; Water Inlet / Outlet Temperature: 54°F / 44°F).
FLA: Full Load Amps (A).
SCCR: 56 kA rms symmetrical 208V maximum 62 kA rms symmetrical 230V maximum 65 kA rms symmetrical 460V maximum

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

21

DIMENSIONS
Figure 4: Dimensions for Single Frame Chiller KCHH017VDGC, KCHH020VDGC.

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

22

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

Figure 5: Dimensions for Double Frame Chiller KCHH033VDGC, KCHH040VDGC.

DIMENSIONS

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

23

DIMENSIONS
Figure 6: Dimensions for Triple Frame Chiller KCHH050VDGC, KCHH060VDGC.

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

24

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

Figure 7: Dimensions for Single Frame Chiller KCHH017HDGC, KCHH020HDGC.

DIMENSIONS

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

25

DIMENSIONS
Figure 8: Dimensions for Double Frame Chiller KCHH033HDGC, KCHH040HDGC.

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

26

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

Figure 9: Dimensions for Triple Frame Chiller KCHH050HDGC, KCHH060HDGC.

DIMENSIONS

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

27

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

REFRIGERANT PIPING AND SENSOR DIAGRAM / OPERATION RANGE AND LIMIT

Refrigerant Piping and Sensor Diagram, Single Frame
Figure 10: Single Frame Chiller Refrigerant Piping and Sensor Location Diagram.

Subcooler

Air cooled condenser

Heat sink

Oil separator

Accu mulator

Com pressor
1

PHEX

Oil separator

Com pressor
2

Accu mulator

Water-out

Water-in

M Fan motor

Subcooler
Heat sink

4 way valve Strainer EEV S Solenoid valve Check valve Pressure sensor Pressure switch Temperature sensor Flow switch Fusible Plug

28

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

REFRIGERANT PIPING AND SENSOR DIAGRAM / OPERATION RANGE AND LIMIT

Refrigerant Piping and Sensor Diagram, Dual Frame
Figure 11: Dual Frame Chiller Refrigerant Piping and Sensor Location Diagram.

Subcooler

Air cooled condenser

Subcooler

Heat sink

Oil separator

Accu mulator

Com pressor
1

PHEX

Oil separator

Com pressor
2

Accu mulator

Heat sink

Water-out

Water-in

M Fan motor
4 way valve Strainer EEV S Solenoid valve Check valve Pressure sensor Pressure switch Temperature sensor Flow switch Fusible Plug

Subcooler

Air cooled condenser

Subcooler

Product Data

Heat sink

Oil separator

Accu mulator

Com pressor
1

PHEX

Oil separator

Com pressor
2

Accu mulator

Heat sink

Water-out

Water-in

Due to our policy of continuous product innovation, some specifications may change without notification.

29

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

REFRIGERANT PIPING AND SENSOR DIAGRAM / OPERATION RANGE AND LIMIT

Refrigerant Piping and Sensor Diagram, Triple Frame
Figure 12: Tri;le Frame Chiller Refrigerant Piping and Sensor Location Diagram.

Subcooler

Air cooled condenser

Subcooler

Heat sink

Oil separator

Accu mulator

Com
pressor 1

PHEX

Oil separator

Com pressor
2

Accu mulator

Water-out

Water-in

Heat sink

Subcooler

Air cooled condenser

Subcooler

M Fan motor
4 way valve Strainer EEV S Solenoid valve Check valve Pressure sensor Pressure switch Temperature sensor Flow switch Fusible Plug

Heat sink

Oil separator

Accu mulator

Com pressor
1

PHEX

Oil separator

Com pressor
2

Accu mulator

Heat sink

Water-out

Water-in

Subcooler

Air cooled condenser

Subcooler

Heat sink

Oil separator

Accu mulator

Com pressor
1

PHEX

Oil separator

Com pressor
2

Accu mulator

Heat sink

Water-out

Water-in

30

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

EWT and LWT Chilled Water Temperature Degrees F

CHILLED WATER OPERATION LIMITS AND PERFORMANCE

KCHH Chilled Water Operation Limits and Performance

105

95

85

75

65

55

45

35

25

15

5
5 15 25 35 45 55 65 75 85 95 105 115 125 Ambient Air Degrees F

Operation Range

Cold Water Inlet Temperature F
Cold Water Outlet Temperature F
Ambient Range

18°F to 97°F 14°F to 77°F 5°F to 125°F

Approved between EWT and LWT is 4°F to 20°F

1. Proper Glycol Solution is required for LWT at or below 32°F.
2. Proper Glycol Solution Evaluation is Required in Ambient Conditions below 41°F
3. Ambient Air Operation Limits: 208-230V is 122°F and 460V is 125°F.
4. LG LATS ISC Selection Software is to be used to confirm selection and performance.

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

31

CHILLED WATER OPERATION LIMITS AND PERFORMANCE

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

MBH

Cooling Performance 87°F EWT / 77°F LWT

675

625

KCHH060 60 TON

575

525

475

425

375

KCHH040 40 TON

325

275

225

175

KCHH020 20 TON

125

75

25

-25 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130

MBH

Cooling Performance 78°F EWT / 68°F LWT

675

625

KCHH060 60 TON

575

525

475

425

375

KCHH040 40 TON

325

275

225

175

KCHH020 20 TON

125

75

25

-25 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130

32

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

CHILLED WATER OPERATION LIMITS AND PERFORMANCE

Product Data

MBH

Cooling Performance 54°F EWT / 44°F LWT

675 625 575 525 475 425 375 325 275 225 175 125
75 25 -25 0

KCHH060 60 TON KCHH040 40 TON KCHH020 20 TON
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130

MBH

Cooling Performance 44°F EWT / 34°F LWT

675

625
KCHH060 60 TON
575

525

475

425

375

KCHH040 40 TON

325

275

225

175
KCHH020 20 TON
125

75

25

-25 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130

Due to our policy of continuous product innovation, some specifications may change without notification.

33

CHILLED WATER OPERATION LIMITS AND PERFORMANCE

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

MBH

Cooling Performance 34°F EWT / 24°F LWT

675

625

575

525

KCHH060 60 TON

475

425

375

325

KCHH040 40 TON

275

225

175

125

KCHH020 20 TON

75

25

-25 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130

MBH

Cooling Performance 24°F EWT / 14°F LWT

675

625

575

525

475
KCHH060 60 TON
425

375

325

275

KCHH040 40 TON

225

175

125

KCHH020 20 TON

75

25

-25 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130

34

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

LWT and EWT HOT Water Temperature Degrees F

Product Data

HOT WATER OPERATION LIMITS AND PERFORMANCE

KCHH Hot Water Operation Limits and Performance

145

135

125

115

105

95

90

85

80

75

70

65

60

-20

-10

0

10

20

30

40

50

60

70

80

90

100

Ambient Air Degrees F

HOT Water Inlet Temperature F HOT Water Outlet Temperature F
Ambient Range

66°F to 136°F 86°F to 140°F -22°F to 95°F

1. Proper Glycol Solution Evaluation is Required in Ambient Conditions below 41°F
2. LG LATS ISC Selection Software is to be used to confirm selection and performance.

Operation Range

Due to our policy of continuous product innovation, some specifications may change without notification.

35

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

HOT WATER OPERATION LIMITS AND PERFORMANCE
90.1 Heating Performance Data Low Temperature Heating 95°F EWT / 105°F LWT Medium Temperature Heating 105°F EWT / 120°F LWT High Temperature Heating 120°F EWT / 140°F LWT

MBH

KCHH020 20 TON

275

250

225

200

175

150

125

100

75

50

25

0

-20

-10

0

10

20

30

40

50

60

70

80

90

100

Ambient Temperature

36

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

HOT WATER OPERATION LIMITS AND PERFORMANCE
90.1 Heating Performance Data Low Temperature Heating 95°F EWT / 105°F LWT Medium Temperature Heating 105°F EWT / 120°F LWT High Temperature Heating 120°F EWT / 140°F LWT

MBH

KCHH040 40 TON

450

425

400

375

350

325

300

275

250

225

200

175

150

125

100

75

-20

-10

0

10

20

30

40

50

60

70

80

90

100

Ambient Temperature

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

37

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

HOT WATER OPERATION LIMITS AND PERFORMANCE
90.1 Heating Performance Data Low Temperature Heating 95°F EWT / 105°F LWT Medium Temperature Heating 105°F EWT / 120°F LWT High Temperature Heating 120°F EWT / 140°F LWT

MBH

KCHH060 60 TON

800 775 750 725 700 675 650 625 600 575 550 525 500 475 450 425 400 375 350 325 300 275 250 225 200

-20

-10

0

10

20

30

40

50

60

70

80

90

100

Ambient Temperature

38

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

REFRIGERANT PIPING AND SENSOR DIAGRAM / OPERATION RANGE AND LIMIT

Product Data

KCHH (-22F to -5F) MAX LWT Available
111

110

109

108

107

106

105

104

103

102

101

100

99

98

97

96

95

94 -23 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4

Due to our policy of continuous product innovation, some specifications may change without notification.

39

REFRIGERANT PIPING AND SENSOR DIAGRAM / OPERATION RANGE AND LIMIT

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

KCHH (-4F to 13F) MAX LWT Available
130

129

128

127

126

125

124

123

122

121

120

119

118

117

116

115

114

113

112 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

40

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

REFRIGERANT PIPING AND SENSOR DIAGRAM / OPERATION RANGE AND LIMIT

Product Data

KCHH (14F to 31F) MAX LWT Available
141

140

139

138

137

136

135

134

133

132

131

130 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Due to our policy of continuous product innovation, some specifications may change without notification.

41

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

REFRIGERANT PIPING AND SENSOR DIAGRAM / OPERATION RANGE AND LIMIT
KCHH (32F to 67F) MAX LWT Available
141
140
139 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68
KCHH (68F to 95F) MAX LWT Available
141
140
139 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96

42

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

REFRIGERANT PIPING AND SENSOR DIAGRAM / OPERATION RANGE AND LIMIT

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

43

REFRIGERANT PIPING AND SENSOR DIAGRAM / OPERATION RANGE AND LIMIT

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

44

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

SAFETY DEVICES AND SETTINGS

List of Safety Devices and Settings

No. Safety device

1

High pressure switch

2 Fuse

Circuit board 3 protection
(overcurrent)

Circuit board 4 protection
(overcurrent)

5

Discharge temperature sensor

6

High pressure sensor

7

Low pressure sensor

8

Water pipe temperature sensor

9

Reverse phase detector

10

Liquid compressor prevention

11

Compressor ratio limit

Setting

Function

551 PSI

Stops operation of the module when the pressure is above the setting

250 V 5 A (Main) Disconnects current when it exceeds the normal 250 V 15 A (INV) value

35 A

Measures and stops over-current per compressor

7 A

Measures and stops over-current per motor

230°F

Stops compressor in stages

551 PSI

Starts protective operation control to reduce the cycle pressure

32 PSI

Starts protective operation control to raise the cycle pressure

Off : 37.4°
Off Capacity Reduction

Prevent evaporator from freezing. Not active if low temperature cooling is activated.
Compares the current of each phase and stops when it is in reverse phase
Discharge over-heating level goes up to prevent liquid compression

9 HTZ Step Reduction

Compressor frequency is reduced when operating at high compression ratio to prevent the internal parts within the compressor from being damaged

Installation

Due to our policy of continuous product innovation, some specifications may change without notification.

45

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

PLACEMENT CONSIDERATIONS
Selecting the Best Location for the Chiller
DANGER
· Do not install the chiller in an area where oil, steam, or emulsified gas are present; these will cause bodily injury or death. · Do not install the chiller in an area where flammable gas could generate or flow; this condition could cause a fire, which will cause bodily
injury or death. · Do not install the chiller in an area where corrosive gases could generate, flow, stagnate, or leak (coolant could leak from corroded pipes). These conditions could cause a fire, resulting in bodily injury or death. · Do not install the chiller in an area where high levels of carbon fiber or dust are present; these could cause a fire, resulting in bodily injury or death. · Do not install the chiller in an area where acidic or alkali solutions may be present; these could corrode the pipes if added to the water, causing antifreeze to leak, and resulting in bodily injury or death. · Install the chiller where its weight is sufficiently supported, and where it will not fall over from strong winds or earthquakes. If the installation location is insufficient, the chiller could fall, causing physical injury or death.
WARNING
Install a fence or barricade around the chiller to prevent animals and / or unauthorized individuals from accessing it. Install a boundary or danger sign if necessary. Damage to the components could cause fire, explosion, physical injury, or death.
Do’s Select a location for installing the chiller that meets the following conditions: · Where it is flat and there is enough strength to support the weight of and vibration from the chiller. · In an area that allows for optimum airflow at both inlet and outlet sides; enough space for wiring, and piping; and is easily accessible for
installation, inspection, maintenance, and service. · If the chiller is installed in a highly humid environment (near an ocean, lake, etc.), ensure the site is well-ventilated with a lot of natural light
(Example: Install on a rooftop). · If the chiller is not going to operate during winter, add antifreeze to the water supply.
Do Not’s · Do not install the chiller where it will be subjected to direct thermal radiation from other heat sources, or in an area that would expose the chiller to heat or steam like discharge from boiler stacks, chimneys, steam relief ports, air conditioning units, kitchen vents, plumbing vents, and other sources of extreme temperatures. · Do not install the chiller in an area where high-frequency electrical noise / electromagnetic waves will impact operation. · Do not install the chiller in an area where its operating sound will disturb inhabitants of surrounding buildings. · Do not install the chiller in an area where it will be exposed to direct, strong winds. Verify that seasonal winds do not impact only one side of the chiller.

46

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

PLACEMENT CONSIDERATIONS

Oceanside Installation Precautions
· Avoid installing the chiller where it would be directly exposed to ocean winds. · Install the chiller on the side of the building opposite from direct ocean winds (so the building can block the winds). · Select a location with good drainage.

If the chiller is installed in an area where it would be directly exposed to ocean winds, additional anti-corrosion treatment will need to be applied to the chiller condenser. Ocean winds will cause corrosion, particularly on the condenser, which, in turn could cause product malfunction or inefficient performance.

If the chiller must be placed in a location where it would be subjected to direct ocean winds, install a concrete (or similar material) windbreaker. The windbreaker wall height and width must be at least one and a half (1-1/2) times wider than the chiller, and must provide at least 40 inches clearance to allow for airflow.

Ocean Winds

Wall Ocean Winds

Installation

Due to our policy of continuous product innovation, some specifications may change without notification.

47

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual
Min. 32
Min. 197

PLACEMENT CONSIDERATIONS

Clearance Requirements
Follow the ventilation (suction and discharge air flow) and service requirements as shown below and on the next page when choosing a chiller installation area. The system used in the diagrams is a single frame system. The clearances detailed are the same for all frame sizes.

Ventilation Clearance Requirements
Air-cooled chillers must be installed in an open space or must have appropriate ventilation. If the chiller must be installed near one wall or under a ceiling, there must be enough space for ventilation.

Installing Near One Wall
· If one side of the chiller is near a wall, and the height of the wall is less than 32 inches, the clearance space between the chiller and the wall must be a minimum of 32 inches.

Installing Under a Ceiling
· If the chiller is installed under a ceiling, the clearance space between the top of the chiller and the ceiling must be a minimum of 197 inches.

· If one side of the chiller is near a wall, and the height of the wall is greater than 32 inches, the clearance space between the chiller and the wall must be a minimum of 32 inches plus half of h1 (difference between 32 inches and the total wall height).

· If the front or back of the chiller is near a wall, the clearance space between the chiller and the wall must be a minimum of 32 inches.

Figure 13: Ventilation Clearance Requirements When Installing the Chiller Along One Wall.

Figure 14: Ventilation Clearance Requirements When Installing the Chiller Under a Ceiling.
Ceiling

229″

Air Max Wall 197″ h1

Min. 32+h1/2
@229″ Max 114.5″

Minimum base height is 4″. Vibration isolation material is required. Spring Isolation is preferred.

Concrete Slab or Base Materials

(Unit: Inches)

Air Wall

Minimum base height is 4″. Vibration isolation material is required. Spring Isolation is preferred.

Min. 32

Concrete Slab or Base Materials

(Unit: Inches)

Minimum base height is 4 inches. Isolation material used shall be chosen and approved by the design engineer and be compliant with any and all applicable national, state and local codes. Chiller to be properly and securely mounted to the base and the base to the structure.
When open on 3 sides, wall height above 229″ is the maximum needed to calculate minimum clearance requirements.

48

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

PLACEMENT CONSIDERATIONS

Service Clearance Requirements
Ensure there is enough space around the chiller for maintenance and service. See the figures below for minimum dimensions. Clearances are the same for all three frame sizes.

Figure 15: Service Clearance Requirements for One Chiller.

Service Space

Min. 36

Location where the water pipes are installed. Ensure that there is sufficient clearance space for future service maintenance and repair.

Min. 36

Min. 24

Min. 24 (Unit: Inches)

Clearances are the same for all three frame sizes. Figure 16: Service Clearance Requirements for Two Chillers.
Min. 24

Service Space

Min. 36

Location where the water pipes are installed. Ensure that there is sufficient clearance space for future service maintenance and repair.

Installation

Min. 36

Min. 24

Min. 24 (Unit: Inches)

See images above for minimum clearances, or increase clearance space based on NEC or other applicable service or safety codes.

Due to our policy of continuous product innovation, some specifications may change without notification.

49

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

PLACEMENT CONSIDERATIONS

Seasonal Wind and Winter Installation Precautions
To ensure the chiller operates properly, certain measures are required in locations where strong cold winds, heavy snowfall, and freezing temperatures could occur.

Consider chiller fan operation when installing in snow-prone areas. If the chiller fan is installed below a certain level, it could trigger a high pressure error within the circuit and cause operation malfunction.

1. Snow could access the air discharge outlet of the condenser and freeze inside the chiller; in areas with potentially high snowfall amounts, install a cover over the chiller to prevent snow accumulation on its top.

Figure 17: Installing the Chiller on a High Base For Optimum Airflow.

2. The interior of the chiller could freeze if the air inlet becomes clogged with snow. Install the chiller in such a way that snow drifts do not blow into the air inlet, and install a hood to block the unit from heavy snow. Clear the area of snow around the chiller heat exchanger.

3. Install the concrete slab or base materials including isolation

Min. 4 inches above snow accumulation (Stand plus Spring Isolation)

component or material so that the chiller is a minimum of 4 inch-

es (102 mm) higher than the accumulated snow (the chiller is to be installed 4 inches [102 mm] above the average accumulated snowfall

for the geographical area).

4. If more than 4 inches (102 mm) of snow has accumulated on top of the chiller, remove the snow, and then operate the unit.

5. The base or pad size is to be larger than the chiller. Follow local and state requirement for final design.

6. Do not install the chiller in an area where heavy snow accumulation could negatively impact chiller operation. Position the chiller in such a way that the side with the air heat exchanger does not face the direction of the snow (ensure the side with the air heat exchanger is parallel to snowfall direction). Add a wall high enough to prevent any snow accumulation from being drawn up into the coil side of the chiller (field installed).

7. If seasonal winds are strong and blow predominately from one direction, chiller capacity could be reduced or load imbalance could occur; therefore, install the chiller so that the product cycle is not impacted. If that isn’t possible, install a windbreaker, hood, etc. In locations with strong seasonal winter winds (especially near coastal areas), install a hood, taking into consideration wind direction, that doesn’t block the suction inlet of the chiller. If the chiller will be directly exposed to seasonal winter winds, field-install a wind baffle (in addition to the hood).

8. Do not install the chiller near an edge of a rooftop or overhang. Snow can fall off the roof or overhang and into the chiller. Do not allow snow to accumulate between the outside wall and the chiller. If snow accumulates in this location, chiller operation will malfunction due to reduced airflow.

Figure 18: Installing the Chiller Away from Rooftops and Overhangs.

50

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

TRANSPORTING / LIFTING

Transporting / Lifting
WARNING
· Take extreme care when transporting the chiller. Use a forklift or (required) spreader bar, and follow the directions in this manual. There is a risk of the product falling and causing physical injury or death. · Do not touch the heat exchanger with bare hands. It is very sharp and can cause physical injury. · Tear apart and dispose the plastic (vinyl)r packaging so that children do not play and risk suffocation and death. · Lift and support the chiller at specified locations (at least four [4]) points) to avoid slipping from the rigging apparatus, and the appropriate length (26.1 feet [8.7 yd.]) and number of lifting straps. There is a risk of the product falling and causing physical injury. · Use caution when using forklift to transport the chiller.. Do not drop the unit when carrying it with a forklift. There is a risk of the product falling and causing physical injury.

Precautions When Moving the Chiller With the Forklift · Keep the chiller as level as possible. · Verify the weight of the forklift, and make sure that the forklift has
sufficient capacity to handle the weight. · Measure the transportation grooves at the bottom of the chiller, and
make sure to use a fork that fits the grooves. · The forklift cannot lift the chiller from the back. Always lift the
chiller on the side where the transportation grooves are located.

Figure 19: Using the Forklift (For Illustrative Purposes Only; Appearances Will Vary Depending on Model).
Fork

WARNING
Failure to follow precautions when transporting the chiller can result in physical injury or death.

Installation

Precautions When Lifting the Chiller · Keep the chiller as level as possible.
· Do not tilt the chiller more than 15 degrees.
· Pass the lifting straps through the support access holes located at the bottom of the chiller.
· Always connect the straps to at least four (4) supports when lifting the chiller.
· Must use a steel spreader bar so that the straps do not transfer tension to, and / or damage, the chiller coil and the top of the frame. (Spreader bar must be wider that the size of the chiller and is field supplied).

Figure 20: Lifting the Chiller (For Illustrative Purposes Only; Appearances Will Vary Depending on Model).
Lifting Strap

Do not allow the spreader bar to come in contact with the chiller. It can cause product damage.

Spreader Bar (Required)

Lifting Strap Support Access Holes

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51

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

STORING THE CHILLER / INSTALLING ANTIVIBRATION AND ANCHOR BOLTS
Storing the Chiller
If the chiller must be stored at the construction site before installation / operation, do not allow dirt or moisture. Place a protective cover on the chiller until ready for installation.
Installation Considerations
· As soon as the chiller is delivered, check for any damages. If there are damages, immediately contact the shipping company; make notations on the shipping documentation when signing for the load.
· Install in a location where it is flat and there is enough strength to support the weight of and vibration from the chiller. · Install in an area that allows for optimum airflow at both inlet and outlet sides; enough space for wiring, and piping; and is easily accessible
for installation, inspection, maintenance, and service. See the specification table, dimensions, and wiring diagram for clearance requirements, net weight, etc. · Inspect the field-installed base, and resolve any issues before installing the chiller. · Install the chiller so that it will not fall over due to strong winds or earthquakes. · If installing the chiller in a coastal area where it is impacted by ocean winds, additional anti-corrosive treatment must be applied to the condenser. · If combining multiple chillers, it is best to ensure all are at the same level so that the water pipes can be easily connected.
WARNING
Improper installation will cause the unit to fall over, resulting in physical injury or death.
Improper installation can cause product malfunction and damage.
Installing Anti-Vibration and Anchor Bolts (Field-Supplied)
· Use field-supplied anti-vibration and install before placing the chiller on the base or its installation area. · Anti-vibration is required and is to be specified and selected properly based on weight and local wind code
requirements. All fasteners to be properly specified by a professional. · See image for guidance on where to install the anti-vibration on the chiller. · Anti-vibration is required and is to be specified and selected properly based on weight and local wind code
requirements. All fasteners are to be properly specified by a professional. · The wooden shipping pallet at the bottom of the chiller must be removed before installation and tightening the
anchor bolts. · Use anchor bolts to firmly attach the chiller to the installation area / base. · Tighten the bolts so that the chiller does not fall over from strong winds or earthquakes. Must be engineered
by local professional. · Noise and operation vibration from the chiller can be transferred to the floor or wall of the installation area.
Add anti-vibration material to reduce its impact. · Follow all local, state, and federal codes for securing chiller and base design. · Open the left / right panels of the chiller, find the anchor bolt locking points, check anchor bolt attachment
hole, and lock the anchor bolts so the bolts are at right angles to the chiller.

52

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

STORING THE CHILLER / INSTALLING ANTIVIBRATION AND ANCHOR BOLTS
Figure 21: KCHH Base Connection Location.

Installation

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53

WATER PIPE SYSTEM / PIPING

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

Water pipe system installation is an important part of the chiller system. Any defect in the water pipe system can lead to chiller malfunction. When designing the water pipe system, consider future service and maintenance, and install the field-supplied water pipe system components as detailed below.
Water Pipe System
Water circulation that has temperature difference of 4°F to 20°F between the outlet water temperature of the hot and cold water is required. If the water circulation temperature differential is insufficient or is too much, the chiller will malfunction, will not be able to operate properly, and product life will be reduced.
· Ensure that all installed components comply with the design water pressure (or higher). · Ensure that the water circulation complies with product specifications. Even when the water circulation complies with the product specifica-
tion, install a bypass circuit on the load side of the water piping system. If water flow is reduced during a low load, it can cause issues such as excessive and frequent compressor operation, and frozen components during cooling operation or if the operation stops. · Maintain a constant water circulation flow as much as possible.
Expansion Tank Expansion tanks receive and expel the excess water, and simultaneously remove air in the water pipe system. Choose an expansion tank with a capacity from 2 to 2-1/2 times of the water expansion amount. Generally, the expansion tank capacity is 3% to 5% of the entire water pipe system capacity. Check with local, state, and federal guidelines regarding expansion tank requirements and size. The KCHH Chiller does not have a minimum loop requirement. For applications that require a critical and stable loop temperature the design engineer should design the loop capacity. A common minimum loop design is 2 times the GPM of a 10 degree delta or standard rated GPM for the system.
Pipe Slope and Air Vent Valve If air remains in the water pipes, water pipe system resistance increases, and / or the amount of circulating water is reduced significantly. If air remains in the pump during operation, it can result in chiller malfunction or shutdown. Install an air vent valve where there could be a chance of air remaining in the water pipe system. Include 1/200 of slope on the air vent valve side to reduce the likelihood of air remaining in the pipe.
Water Piping
· Install the water pipe system so that the connections to the chiller are correct, tight, and without leaks. · Permitted water pressure resistance of the water pipe system is 145 psi. · Add insulation to the water system pipes to prevent any external heat loss, or to prevent condensate from forming during cooling operation.
Follow local, state, and federal guidelines on insulation. · Add pressure gauges and thermometers on the water inlets and outlets to check chiller operation. · Include a strainer with minimum 50 mesh on the water inlet to filter particles that could enter the heat exchanger. Install the strainer on a
horizontal pipe. · Before supplying water, clean inside the pipe system to remove particles that will damage the chiller.

If sand, debris, or rust are present in the water pipe system, these materials can corrode metallic parts and cause chiller operation failure.

· Install the on / off valve on the cold water inlet / outlet and bypass pipe on the pipe direction on the device side. · Install a pipe system bypass on the initial segment of the chiller water pipe system. A bypass circuit can help when cleaning the pipes before chiller installation, and during annual water pipe system cleaning. · On / off valves can prevent water from backflowing into chillers that are not operating; also reduce power to the pump(s). Review site requirements for on / off valve installation.
· Include flexible joints at the inlet / outlet pipes that reduce any vibration imparted to the water pipe system and chiller. Flexible joints help prevent water leaks caused by operation vibration.

54

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

WATER PIPE SYSTEM / PIPING

Water Piping System Installation

Installation Method A Reverse Return (Recommended) Independent product installation. Figure 22: Installation Method A.

3XD P1 T1
P2 T2

F
3XD

F
3XD P1 T1
P2 T2 P1 T1

LG Supplied
Leaving Water Entering Water

P2 T2 P1 T1
P2 T2

3XD

LG Supplied

Symbol Req’d Description

Symbol Req’d

Description (Provided by Others)

Yes Valve (100% Flow)

T1 or T2

No

Optional Temperature Sensor (1: Inlet, 2: Outlet)

Yes

Strainer (50 Mesh)

P1 or P2

Required for each chiller

Yes

Flexible Joint

Yes

Service Port

F

Yes * Pressure Gauge (1: Inlet, 2: Outlet)

Yes

Water Pump (Pump Sized to Meet Minimum to Maximum Flow for LG Chiller)

Yes Flush Port

Yes

Bypass Valve Each Chiller

3XD

Yes Extension distance to be 3 times pipe diameter

*Single pressure gauge with on/off valves can be used to confirm differential pressure.

Due to our policy of continuous product innovation, some specifications may change without notification.

55

WATER PIPE SYSTEM / PIPING

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

Installation Method B Independent product installation. Figure 23: Installation Method B.

3XD

F

P1 T1

F
P1 T1

P2 T2 3XD
LG Supplied
Leaving Water Entering Water

P2 T2 P1 T1
P2 T2 P1 T1

P2 T2 3XD
LG Supplied

Symbol Req’d Description

Symbol Req’d

Description (Provided by Others)

Yes Valve (100% Flow)

T1 or T2

Yes

Strainer (50 Mesh)

P1 or P2

Required for each chiller

Yes

Flexible Joint

Yes

Service Port

F

No Optional Temperature Sensor (1: Inlet, 2: Outlet)

Yes * Pressure Gauge (1: Inlet, 2: Outlet)

Yes

Water Pump (Pump Sized to Meet Minimum to Maximum Flow for LG Chiller)

Yes Flush Port

Yes

Bypass Valve Each Chiller

3XD

Yes Extension distance to be 3 times pipe diameter

*Single pressure gauge with on/off valves can be used to confirm differential pressure.

56

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

Water Piping System Installation

FREEZING PRECAUTIONS

Freezing Precautions

Installing in Areas Where Winter Outdoor Ambient Air Temperatures Could Fall Below 32°F (0°C) If winter outdoor ambient air temperatures could fall below 32°F (0°C), take the measurements detailed below to prevent the pipes from freezing, and help prevent damage to the heat exchanger.
· Circulation water can freeze if the outdoor ambient air temperature is low (32°F [0°C]), and the chiller is not operating. When the outdoor ambient air temperature is 32°F (0°C), turn the water pump on and circulate water.
· If the chiller will not be operating for an extended period during winter season, drain the circulation water out of the system. · Add anti-freeze to prevent the circulation water from freezing during the winter season (if design temperature is below 41°F). · Maintain water flow following design specifications to reduce damage from rusting, scaling, and corrosion. · LG is not responsible for any chiller damage resulting from poor water quality management or improper water processes.

Inlet Water Pipe To Be Installed Level
The inlet water pipe is to be installed level so that no water remains in the pipe after draining through the drain hole. If it is not level, water will remain in the pipe, which could freeze and damage the pipe / chiller components. Add a drain hole at the bottom of the pipe.

Figure 24: Inlet Water Pipe with Drain Hole.

Outlet Water Pipe

Drain Hole Inlet Water Pipe

If the leaving water line does not sufficiently drain into the entering water line, additional drain holes may be required.

Figure 25: Positioning the Drain Hole When Bends or Traps are Unavoidable.
Outlet Water Pipe

Drain Hole

Inlet Water Pipe

Inlet Water Drain Hole Pipe

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57

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

WATER PIPE INSTALLATION / PUMP CONTROL / QUALITY MANAGEMENT

Water Pipe Installation
· Appropriate pressure of the pipe flange connection is 145 psi. · Water pipe size must be the same or larger than that of the chiller. When multiple chillers are manifolded together, piping is to be properly
sized and engineered by a licensed professional. · To prevent the water pipe connections from sagging due to the load, install appropriate pipe supports. · Position the water inlet pipe at the bottom of the water pipe system, and position the outlet pipe at the top of the water pipe system. · If there is a risk of condensation, install insulation on the cold water outlet pipe (follow all applicable state and local energy and building
codes). · To prevent the connected pipe from freezing during winter season, install the drain valve at the bottom of the pipe system.
Water Pump Control
If the water pumps do not operate for an extended period, internal corrosion is more likely.

Water Quality Management
Impurities in the water can influence chiller performance and life expectancy. The water must be tested and treated using a local water treatment professional, and water quality must not fall below the standards listed in the table.

Table 4: Chiller Water Standards.
Particles
pH (77°F [25°C]) Conduction Rate (77°F [25°C] s/cm)
Alkali Level (ppm) Hardness (ppm) Chlorine Ion (ppm) Lactic Acid Ion (ppm)
Iron (ppm) Sulfur Ion (ppm) Ammonium Ion (ppm)
Silica (ppm)

Circulating Water 6.5 – 8.0
500 or below 100 or below 100 or below 100 or below 100 or below 0.1 or below Must not be detected 0.5 or below 50 or below

Water

Cold Water 6.5 – 8.0
200 or below 50 or below 50 or below 50 or below 50 or below 0.3 or below Must not be detected 0.2 or below 30 or below

58

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

OPERATING PRESSURE DROP / DESIGN FLOW
Figure 26: KCHH Cooling Mode Flow Information
KCHH Cooling Mode Flow Information

PD ftAq

Water Piping System Installation

17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1 0
0

KCHH017
15 30 45 60 75

KCHH033

KCHH050

90 105 120 135 150 165 180 195 210 225 240 255 270 285 300

GPM

19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1 0
0

KCHH020

KCHH040

KCHH060

15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300 315 330 345

GPM

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59

PD ftAq

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual PD ftAq

OPERATING PRESSURE DROP / DESIGN FLOW
Figure 27: KCHH Heating Mode Flow and Performance Information 47 °F Ambient
KCHH Heating Mode Flow and Performance Information 47 °F Ambient

Performance data based on fouling coefficient of .0001 and a water solution no glycol. Use LATS ICS for specific changes when glycol is added.

18

17

16

15

14

KCHH017

KCHH033

KCHH050

13

12

11

10

9

8

7

6

5

4

3

2

1

0 0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300 315

GPM

60

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OPERATING PRESSURE DROP / DESIGN FLOW

Figure 28: KCHH Heating Mode Flow and Performance Information 47 °F Ambient
KCHH Heating Mode Flow and Performance Information 47 °F Ambient
Performance data based on fouling coefficient of .0001 and a water solution no glycol. Use LATS ICS for specific changes when glycol is added.

18

17

16

15

14

KCHH020 GPM KCHH040

KCHH060

13

12

11

10

9

8

7

6

5

4

3

2

1

0

0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300 315

GPM

P D

Water Piping System Installation

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61

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual P D

OPERATING PRESSURE DROP / DESIGN FLOW
Figure 29: KCHH Heating Mode Flow and Performance Information 17°F Ambient
KCHH Heating Mode Flow and Performance Information 17 °F Ambient

Performance data based on fouling coefficient of .0001 and a water solution no glycol. Use LATS ICS for specific changes when glycol is added.

17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1 0
0

15 30 45 60

KCHH017

KCHH033

KCHH050

75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300 315

GPM

62

Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

OPERATING PRESSURE DROP / DESIGN FLOW

Figure 30: KCHH Heating Mode Flow and Performance Information 17°F Ambient

KCHH Heating Mode Flow and Performance Information 17 °F Ambient
Performance data based on fouling coefficient of .0001 and a water solution no glycol. Use LATS ICS for specific changes when glycol is added.

18

17

16

15

14

KCHH020

KCHH040

KCHH060

13

12

11

10

9

8

7

6

5

4

3

2

1

0

0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300 315

GPM

PD ftAq

Water Piping System Installation

Due to our policy of continuous product innovation, some specifications may change without notification.

63

LG Air-Cooled Heat Pump Inverter Scroll Chiller Installation Manual

CONTROL PANEL CONFIGURATION
Control Panel Configuration
Figure 31: Control Panel Configuration.
KCHH Series

Main controller

Terminal block
Sub control box

Main control box

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

64

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BUTTON LOCATIONS AND FUNCTIONS

Chiller controller rotary, DIP switch setting
Sw itch location

SW_CONF SW_LEFT SW_UP

Control

SW_BACK SW_RIGHT SW_DOWN

Name SW_RIGHT
SW_UP SW_LEFT SW_DOWN SW_CONF SW_BACK

Description Changes the setting. Moves the screen. Changes the setting. Moves the screen. Sets the selected function. Moves to the previous step.

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

Due to our policy of continuous product innovation, some specifications may change without notification.

65

OPTIONAL SETTINGS

Option setting