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6

Single Zone V

ertical 

Air Handling Unit Installation Manual

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 INSTRUCTIONS

Clean up the site after installation is finished, and check 

that no metal scraps, screws, or bits of wiring have been left 

inside or surrounding the unit.

Do not use this equipment in mission critical or special- 

purpose applications such as preserving foods, works of art, 

wine coolers or refrigeration. The equipment is designed to 

provide comfort cooling and heating.

Oil, steam, sulfuric smoke, etc., can significantly reduce the performance 

of the unit, or damage its parts.

Do not block the inlet or outlet.

Unit may malfunction.

Securely attach the electrical part cover to the indoor unit 

and the service panel to the outdoor unit.

Non-secured covers can result in malfunction due to dust or water in the 

service panel.

Periodically verify the equipment mounts have not  

deteriorated.

If the base collapses, the unit could fall and cause property damage  

or product failure.

Do not allow water, dirt, or animals to enter the unit.

There is risk of unit failure.

OPERATION

Do not provide power to or operate the unit if it is flood-

ed or submerged.

There is risk of fire, electric shock, physical injury or death.

Use a dedicated power source 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.

If gas leaks out, ventilate the area before operating the unit.

If the unit is mounted in an enclosed, low-lying, or poorly ventilated area, 

and the system develops a refrigerant leak, it may cause fire, electric 

shock, explosion, physical injury, or death.

To avoid physical injury, use caution when cleaning or servicing the air conditioner.

Do not allow water, dirt, or animals to enter the unit.

There is risk of fire, electric shock, physical injury or death.

Avoid excessive cooling and periodically perform ventilation 

to the unit.

Inadequate ventilation is a health hazard. 

Do not touch the refrigerant piping during or after  

operation.

It can cause burns or frostbite.

Do not operate the unit 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.

Periodically verify the equipment mounts have not  

deteriorated.

If the base collapses, the unit could fall and cause physical injury or 

death.

Periodically check power wiring for damage.

Power wiring must be replaced by the manufacturer, its service agent, or 

similar qualified persons in order to avoid physical injury and/or electric 

shock.

Do not open the inlet grille of the unit during operation. 

Do not operate the unit with the panels or guards re-

moved. 

Do not insert hands or other objects through the 

inlet or outlet when the unit has power applied to it. 

Do 

not touch the electrostatic filter, if the unit includes one.

The unit contains sharp, rotating, hot, and high voltage parts that can 

cause personal injury and/or electric shock.

Securely attach the electrical part cover to the indoor unit 

and the service panel to the outdoor unit.

Non-secured covers can result in burns or electric shock due to dust or 

water in the service panel.

Summary of Contents for LVN180HV4

Page 1: ...VERTICAL AIR HANDLING UNIT DOWNFLOW CONVERSION KIT INSTALLATION MANUAL LVN360HV4 LVN420HV LVN480HV Kit PNDFK0 for 36 48 MBH LVN180HV4 LVN240HV4 Kit PNDFJ0 for 18 24 MBH ...

Page 2: ...recautions begins on page 3 For more technical materials such as submittals engineering databooks and catalogs 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 This document as well as all reports illustrations data information and other materials are the property of LG Electronics U ...

Page 3: ...ay enter the unit causing fire electric shock and physical injury or death Always check for system refrigerant leaks after the unit has been installed or serviced Exposure to high concentration levels of refrigerant gas may lead to illness or death Wear protective gloves and safety goggles when handling equipment Sharp edges may cause personal injury Dispose the packing materials safely Packing ma...

Page 4: ...priate actions at the end of HVAC equipment life to recover recycle reclaim or destroy R410A refrigerant according to applicable U S Environmental Protection Agency EPA rules Periodically check that the outdoor frame is not damaged There is a risk of equipment damage Install the unit in a safe location where nobody can step on or fall onto it Do not install the unit on a defective stand There is r...

Page 5: ...an industry qualified experienced certified electrician familiar with the U S National Electric Code 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 property damage personal injury or death All electric work must be performed by a licensed electrician and conform to local buildin...

Page 6: ...If gas leaks out ventilate the area before operating the unit If the unit is mounted in an enclosed low lying or poorly ventilated area and the system develops a refrigerant leak it may cause fire electric shock explosion physical injury or death To avoid physical injury use caution when cleaning or servicing the air conditioner Do not allow water dirt or animals to enter the unit There is risk of...

Page 7: ... requires field reconfiguration of the indoor unit For vertical down the downflow conversion kit is required There are two downflow kits available for the two VAHU chassis sizes Use the correct conversion kit for your VAHU Refer to Table 1 for VAHU and conversion kit compatibility Figure 1 shows the major components of the conversion kit Figure 1 VAHU Downflow Kit Major Components Panel Brackets T...

Page 8: ...on kit for your VAHU Refer to Table 1 2 Remove VAHU front panels and supports Retain all except bottom front panel Bottom front panel is replaced by a panel in the kit Figure 2 3 Remove pipe in and out sensors and temporarily store in the blower section Figure 3 4 Carefully slide the evaporator coil drain pan assembly out of the cabinet Figure 4 Do not apply excessive force on the piping as it may...

Page 9: ...ft and right rear vertical brackets in the rear corners of the cabinet Figure 6 8 Position the rear horizontal bracket on the two vertical brackets and secure with screws Figure 7 9 Position the left and right horizontal side brackets and secure with screws Figure 7 The brackets are not left right hand dependent 10 Position the front horizontal bracket and secure with screws Figure 7 11 Confirm al...

Page 10: ...racket Figure 11 Wiring Ring Plastic Ring Figure 12 Pipe Support Bracket Pipe Support Bracket Figure 13 Reinstall Sensors Sensors Figure 14 Reinstall Panels New panel Vertical Downflow Installation continued 14 Reinstall the cabinet support bracket Figure 10 15 Reinstall the plastic wiring ring and route the sensor wires through the ring Figure 11 16 Reinstall the refrigerant pipe support bracket ...

Page 11: ...For further technical materials such as submittals engineering manuals service manuals and catalogs visit www lghvac com ...

Page 12: ...ial Air Conditioning Division 4300 North Point Parkway Alpharetta Georgia 30022 www lg vrf com IM_VAHU_Downflow_12_17 LG Customer Information Center Commercial Products 1 888 865 3026 USA Follow the prompts for commercial A C products ...

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