LG LSN181HSV5 User manual

STANDARD WALL-MOUNTED INDOOR UNIT
INSTALLATION MANUAL
MAX
MUL
TI F
MULTI F
Models:
LMN079HVT 7 kBtu
LSN090HSV5 9 kBtu
LSN120HSV5 12 kBtu
LMN159HVT 15 kBtu
LSN181HSV5 18 kBtu
LMN249HVT 24 kBtu

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 below.
Do not throw away, destroy, or lose this manual.
Please read carefully and store in a safe place for future reference.
Content familiarity required for proper installation.
A summary list of safety precautions 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.S.A., Inc.
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.
This document is for design purposes only.

3
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.
MAX
MUL
TI F
MULTI F
SAFETY INSTRUCTIONS
WARNING
Do not install or remove the unit by yourself (end-user).
Ask the dealer or an LG trained technician to install the unit.
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explosion, electric shock, physical injury or death.
For replacement of an installed unit, always contact an
LG trained service provider.
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The outdoor unit is shipped with refrigerant and the service
valves closed. Do not open service valves on the unit
until all non-condensibles have been removed from the pip-
ing system and authorization has been obtained from the
commissioning agent.
There is a risk of physical injury or death.
Do not run the compressor with the service valves
closed.
There is risk of explosion, physical injury, or death.
Periodically check that the outdoor unit is not damaged.
There is risk of explosion, physical injury, or death.
Replace all control box and panel covers.
If cover panels are not installed securely, dust, water and animals will
HQWHUWKHXQLWFDXVLQJ¿UHHOHFWULFVKRFNDQGSK\VLFDOLQMXU\RUGHDWK
Wear protective gloves when handling equipment. Sharp
edges will cause personal injury.
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 ill-
ness or death.
Do not install the unit using defective hanging, attach-
ing, or mounting hardware.
There is risk of physical injury or death.
Dispose 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 so that children
will not play with them and risk suffocation and death.
Do not install the unit in any location exposed to open
ÀDPHRUH[WUHPHKHDW Do not touch the unit with wet
hands.
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death
Install the unit considering the potential for strong winds or
earthquakes.
Improper installation will cause the unit to fall, resulting in physical injury
or death.
Do not change the settings of the protection devices.
If the pressure switch, thermal switch, or other protection device is
shorted and forced to operate improperly, or parts other than those
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and physical injury or death.
The instructions below must be followed to prevent product malfunction, property damage, injury or death to the user or other people. Incor-
rect 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
INSTALLATION
DANGER
'RQ¶WVWRUHRUXVHÀDPPDEOHJDVFRPEXVWLEOHVQHDUWKHXQLW
7KHUHLVULVNRI¿UHH[SORVLRQDQGSK\VLFDOLQMXU\RUGHDWK
This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
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.
Note:
This symbol indicates information related to the current procedure.
This symbol indicates an action that should not be performed.
DANGER
WARNING
CAUTION
NOTE

4
Multi F Standard Wall-Mounted Indoor Unit
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.
MAX
MUL
TI F
MULTI F
SAFETY INSTRUCTIONS
INSTALLATION - CONTINUED
Properly insulate all cold surfaces to prevent “sweating.”
Cold surfaces such as un-insulated piping can generate condensate that will
drip and cause a slippery surface condition and/or water damage to walls.
When installing the unit in a hospital, mechanical room, or
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SURYLGHVXႈFLHQWSURWHFWLRQDJDLQVWHOHFWULFDOQRLVH
Inverter equipment, power generators, high-frequency medical equipment,
or radio communication equipment will cause the air conditioner to operate
improperly. The unit will also affect such equipment by creating electrical
noise that disturbs medical treatment or image broadcasting.
Do not use the product for special purposes such as pre-
serving foods, works of art, wine coolers, or other precision
air conditioning applications. This equipment is designed to
provide comfort cooling and heating.
There is risk of property damage.
Do not make refrigerant substitutions. Use R410A only.
If a different refrigerant is used, or air mixes with original refrigerant, the
unit will malfunction and become damaged.
Do not install the unit in a noise sensitive area.
When connecting refrigerant tubing, remember to allow for
pipe expansion.
Improper piping will cause refrigerant leaks and system malfunction.
'RQ¶WVWRUHRUXVHÀDPPDEOHJDVFRPEXVWLEOHVQHDUWKHXQLW
There is risk of product failure.
Take appropriate actions at the end of HVAC equipment life
to recover, recycle, reclaim or destroy R410A refrigerant ac-
cording to applicable U.S. Environmental Protection Agency
(EPA) rules.
Periodically check that the outdoor unit is not damaged.
There is a risk of equipment damage.
Install the unit in a safe location where no one can step on or
fall onto it. Do not install the unit with defective hanging,
attaching, or mounting hardware.
There is risk of unit and property damage.
Install the drain hose to ensure adequate drainage.
There is a risk of water leakage and property damage.
Always check for system refrigerant leaks after the unit has
been installed or serviced.
Low refrigerant levels will cause product failure.
The unit is shipped with refrigerant and the service valves
closed. Do not open service valves on the unit until all
non-condensibles have been removed from the piping sys-
tem and authorization to do so has been obtained from the
commissioning agent.
There is a risk of refrigerant contamination, refrigerant loss and equip-
ment damage.
Do not run the compressor with the service valves closed.
There is a risk of equipment damage.
If the air conditioner 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 ASHRAE (American Society of Heating,
Refrigerating, and Air Conditioning Engineers) Standard 15. If the
refrigerant leaks and safety limits are exceeded, it could result in per-
sonal injuries or death from oxygen depletion.
Properly insulate all cold surfaces to prevent “sweating.”
Cold surfaces such as un-insulated piping can generate condensate
that could drip, causing a slippery surface that creates a risk of slipping,
falling, and personal injury.
WARNING
CAUTION
Be very careful when transporting the product. Failure to follow these directions will result in minor or moderate physical injury.
• Do not attempt to carry the product without assistance.
• Some products use polypropylene bands for packaging. Do not use polypropylene bands to lift the unit.
• Suspend the unit from the base at specified positions.
• Support the unit a minimum of four points to avoid slippage from rigging apparatus.

5
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.
MAX
MUL
TI F
MULTI F
SAFETY INSTRUCTIONS
WIRING
DANGER
High voltage electricity is required to operate this system.
Adhere to the National Electrical Codes and these
instructions when wiring.
Improper connections and inadequate grounding can cause accidental
injury or death.
Always ground the unit following local, state, and National
Electrical Codes.
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the equipment.
Electric shock can cause physical injury or death.
Properly size all circuit breakers or fuses.
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WARNING
The information contained in this manual is intended for use
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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 personal injury or death.
All electric work must be performed by a licensed electrician
and conform to local building codes or, in the absence of
local codes, with the National Electrical Code, and the
instructions given in this manual.
If the power source capacity is inadequate or the electric work is not
SHUIRUPHGSURSHUO\LWZLOOUHVXOWLQ¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RU
death.
Properly tighten all power connections.
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injury or death.
Ensure the unit is connected to a dedicated power source
that provides adequate power.
If the power source capacity is inadequate or the electric work is not
SHUIRUPHGSURSHUO\LWZLOOUHVXOWLQ¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RU
death.
Refer to local, state, and federal codes, and use power wires
RIVXႈFLHQWFXUUHQWFDSDFLW\DQGUDWLQJ
:LUHVWKDWDUHWRRVPDOOZLOOJHQHUDWHKHDWDQGFDXVHD¿UH
6HFXUHDOO¿HOGZLULQJFRQQHFWLRQVZLWKDSSURSULDWHZLUH
strain relief.
Improperly securing wires will create undue stress on equipment power
OXJV,QDGHTXDWHFRQQHFWLRQVZLOOJHQHUDWHKHDWFDXVHD¿UHDQGSK\VL-
cal injury or death.
Do not cut, lengthen or shorten the communications and
power cable between any dry contact unit and its connected
indoor unit. Do not install the unit in a location where the
communications and power cable cannot be safely and easily
connected between the two units. Do not allow strain on
this cable.
Poor cable connections can cause equipment malfunction.
The information contained in this manual is intended for use
E\DQLQGXVWU\TXDOL¿HGH[SHULHQFHGFHUWL¿HGHOHFWULFLDQ
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 and property damage.

6Due 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.
MAX
MUL
TI F
MULTI F
OPERATION
DANGER
'RQRWSURYLGHSRZHUWRRURSHUDWHWKHXQLWLILWLVÀRRGHG
or submerged.
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Use a dedicated power source for this product.
7KHUHLVULVNRI¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK
Do not operate the disconnect switch with wet hands.
7KHUHLVULVNRI¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK
Periodically verify that the hardware securing the unit has not
deteriorated.
If the unit falls from its installed location, it can cause property damage,
product failure, physical injury or death.
If refrigerant gas leaks out, ventilate the area before operat-
ing the unit.
If the unit is mounted in an enclosed, low-lying, or poorly ventilated area
DQGWKHV\VWHPGHYHORSVDUHIULJHUDQWOHDNLWZLOOFDXVH¿UHHOHFWULF
shock, explosion, physical injury or death.
SAFETY INSTRUCTIONS
&OHDQXSWKHVLWHDIWHULQVWDOODWLRQLV¿QLVKHGDQGFKHFN
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. This equipment is designed to
provide comfort cooling and heating.
Provide power to the compressor crankcase heaters at least
six (6) hours before operation begins.
Starting operation with a cold compressor sump(s) will result in severe
bearing damage to the compressor(s). Keep the power switch on during
the operational season.
Do not block the inlet or outlet.
Unit will malfunction.
Securely attach the electrical cover to the indoor unit.
1RQVHFXUHGFRYHUVFDQUHVXOWLQ¿UHGXHWRGXVWRUZDWHULQWKHVHUYLFH
panel.
Periodically verify the equipment mounts have not deterio-
rated.
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.
WARNING
Do not allow water, dirt, or animals to enter the unit.
7KHUHLVULVNRIXQLWIDLOXUH¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK
Avoid excessive cooling and periodically perform ventila-
tion to the unit.
Inadequate ventilation is a health hazard.
Do not touch refrigerant piping during or after operation.
It can cause burns or frostbite.
Do not operate the unit with the panel(s) or protective
FRYHUVUHPRYHGNHHS¿QJHUVDQGFORWKLQJDZD\IURP
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 cable and connection for damage.
Cable must be replaced by the manufacturer, its service agent, or similar
TXDOL¿HGSHUVRQVLQRUGHUWRDYRLGSK\VLFDOLQMXU\DQGRUHOHFWULFVKRFN
Securely attach the electrical cover to the unit.
Non-secured electrical covers can result in burns or electric shock due to
dust or water in the service panel.
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 is powered. Do not touch the
HOHFWURVWDWLF¿OWHULIWKHXQLWLQFOXGHVRQH
The unit contains sharp, rotating, hot, and high voltage parts that can
cause personal injury and/or electric shock.
Ensure no power is connected to the unit other than as
directed in this manual. Remove power from the unit before
removing or servicing the unit.
7KHUHLVULVNRIXQLWIDLOXUH¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK
CAUTION
To avoid physical injury, use caution when cleaning or servicing the air conditioner.

7
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.
MAX
MUL
TI F
MULTI F
TABLE OF CONTENTS
Safety Instructions ......................................................................................................................................................................................................... 3
Unit Nomenclature.......................................................................................................................................................................................................... 8
General Data ............................................................................................................................................................................................................ 11-15
R410A Refrigerant.......................................................................................................................................................................................................11
6SHFL¿FDWLRQV ............................................................................................................................................................................................................. 12
Dimensions............................................................................................................................................................................................................ 13-14
Refrigerant Piping Diagram ........................................................................................................................................................................................ 15
Installation................................................................................................................................................................................................................16-38
Unpack and Inspect for Freight Damage.................................................................................................................................................................... 16
Indoor Unit Location Selection............................................................................................................................................................................... 17-18
Required Clearances.................................................................................................................................................................................................. 18
Choose Piping and Wiring Route / Drilling Piping Hole.............................................................................................................................................. 19
Preparing for Installation........................................................................................................................................................................................ 20-22
Mounting the Indoor Unit ............................................................................................................................................................................................ 23
Indoor Unit Connections........................................................................................................................................................................................ 24-27
Flaring Procedure.................................................................................................................................................................................................. 28-29
Outdoor Unit to Indoor Unit Connections............................................................................................................................................................... 30-34
Condensate Drain Hose Installation...................................................................................................................................................................... 35-36
Piping Insulation ....................................................................................................................................................................................................37-38
Wiring .......................................................................................................................................................................................................................39-53
Safety Guidelines / General Information..................................................................................................................................................................... 39
Power Wiring / Communication Cable Connections.............................................................................................................................................. 40-41
3RZHU6XSSO\3RZHU:LULQJ6SHFL¿FDWLRQV.............................................................................................................................................................. 41
&RPPXQLFDWLRQ&RQQHFWLRQ&DEOH6SHFL¿FDWLRQV.................................................................................................................................................... 42
&RQWUROOHU2SWLRQVDQG&RQQHFWLRQ6SHFL¿FDWLRQV ................................................................................................................................................43-44
Indoor Unit Electrical Connections ........................................................................................................................................................................45-52
Optional Wall-Mounted Sensor and Controller ........................................................................................................................................................... 53
Final Installation Procedures ................................................................................................................................................................................. 54-57
Reattaching the Indoor Unit Bottom Panel ............................................................................................................................................................54-55
Air Filter Disassembly and Assembly ......................................................................................................................................................................... 56
Installing Batteries ...................................................................................................................................................................................................... 57
Troubleshooting ...................................................................................................................................................................................................... 58-59
Error Codes ..........................................................................................................................................................................................................58-59
Installation Checklist............................................................................................................................................................................................... 60-61

8
Multi F Standard Wall-Mounted Indoor Unit
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.
MAX
MUL
TI F
MULTI F
UNIT NOMENCLATURE
Multi F Multi-Zone Systems —Indoor Units
MN159 HVT
Generation:
3 = Third (also Third Gen if no number in this position)
4 = Fourth
5 = Fifth
Features:
H = Heat Pump
V = Inverter
T = High Wall-Mounted Indoor Unit
P = Art Cool Gallery Indoor Unit
Nominal Capacity
(Nominal cooling capacity in Btu/h):
Component:
AN: Art Cool™ Wall-Mounted Indoor Unit
N: Standard Wall-Mounted Indoor Unit
CN: Four-Way Ceiling-Cassette Indoor Unit
DN: Ceiling-Concealed Duct (Low Static) Indoor Unit
HN: Ceiling-Concealed Duct (High Static) Indoor Unit
VN: Vertical-Horizontal Air Handling Indoor Unit
L = LG
079 = 7,000
090 = 9,000
120 = 12,000
159 = 15,000
180 /181 = 18,000
249 = 24,000
L
• Voltage for all equipment is 208-230V, 60 Hz, 1-phase.
• All indoor units are compatible with wired controllers
Frame Type:
M = Multi-Zone
A/S = Single Zone (Gen 4, 5 Single Zone units also compatible
with Multi Zone)

9
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.
MAX
MUL
TI F
MULTI F
INTRODUCTION
Multi F and Multi F MAX Standard
Wall-Mounted Units
This manual describes how to install the LG Multi F and Multi F MAX
(Multi Zone) Standard Wall-Mounted Indoor Units (IDU) for Multi F
heat pump systems. The table on the next page lists the available
models. Refer to LG’s Multi F Indoor Unit Engineering Manual for
complete detailed engineering data and selection procedures.
Safety
Safety of personnel is the primary concern during all procedures.
Read and understand the safety summary at the front of this manual.
Read and understand this installation procedure before beginning
installation. Use the appropriate tools and accessories during instal-
lation. Plan the work and do not work alone, if possible. Know
how to obtain emergency medical and fire fighting assistance.
Installation Personnel
This equipment is intended for installation by personnel trained
in the required construction, mechanical, electrical, and/or other
disciplines.
WARNING
Installation work must be performed by trained personnel and in accordance with national wiring standards and all local or other applicable codes.
,PSURSHULQVWDOODWLRQFDQUHVXOWLQ¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK
Please read all instructions before installing this product. Become familiar with the unit’s components and connections, and the order of installation.
Incorrect installation can degrade or prevent proper operation.
• Connecting cable (power and control)
• Pipes - vapor line and liquid line, with insulation
• Insulated drain hose
• Additional drain hose
• Level
• Screwdriver
• Electrical lineman pliers
• Electric drill
• Hole saw
• Drill
• Flaring tool set
• Tubing cutter
• Tube/pipe reamer
• Torque wrenches
• Allen wrench
• Gas-leak detector
• Thermometer
Required Tools (field provided)
Required Parts (field provided)
Figure 1: Multi F Standard Wall-Mounted HVT Indoor Unit.
Figure 2: Multi F Standard Wall-Mounted HSV5 Indoor Unit.

10
Multi F Standard Wall-Mounted Indoor Unit
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.
MAX
MUL
TI F
MULTI F
Unit Model Number Nominal Capacity
Cooling (Btu) Heating (Btu)
LMN079HVT 7,000 8,100
LMN159HVT 14,300 15,600
LMN249HVT 24,000 25,600
LSN090HSV5 9,000 10,900
LSN120HSV5 12,000 13,600
LSN181HSV5 18,000 21,600
Table 1: Multi F Standard Wall-Mounted Indoor Units.
INTRODUCTION
Included Parts
Part Quantity Image
Installation Plate One (1)
Type “A” Screws Five (5)
Type “B”, “C”, and “D”
Screws
(Example image;
appearances will vary)
Two (2)
Each Type
Wireless
Controller with Holder
AKB74955602
One (1)
Connectors
(For use with Multi F
Systems)
2QH(DFKIRULQFKĺLQFK
2QH(DFKIRULQFKĺLQFK
2QH(DFKIRULQFKĺLQFK
(All three connectors listed above are included
with the 18,000 Btu/h indoor unit;
WKHLQFKĺLVWKHRQO\RQHUHTXLUHG
for the 24,000 Btu/h indoor unit.)
7,000 ~ 15,000 Btu/h Indoor Units 18,000 and 24,000 Btu/h Indoor Units

11
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GENERAL DATA
R410A Refrigerant
R410A refrigerant has a higher operating pressure in comparison to R22 refrigerant. All piping system materials installed must have a higher
resisting pressure than the materials traditionally used in R22 systems.
R410A refrigerant is an azeotrope of R32 and R125, mixed at 50:50. The ozone depletion potential (ODP) is 0.
WARNING
• Do not place refrigerant cylinder in direct sunlight. Refrigerant cylinder will explode causing severe injury or death.
Note
• Because R410A is a combination of R32 and R125, the required additional refrigerant must be charged in its liquid state. If the refrigerant is
charged in its gaseous state, its composition changes and the system will not work properly.
• Do not heat piping more than necessary during installation. Piping will become soft and fail when pressurized.
• Do not use any piping that has not been approved for use in high-pressure refrigerant systems. Piping wall thickness must comply with
the applicable local, state, and federal codes for the 551 psi design pressure of R410A. Inadequate piping will fail when pressurized.

12
Multi F Standard Wall-Mounted Indoor Unit
Due to our policy of continuous product innovation, some specifications may change without notification.
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Table 2: 0XOWL)0XOWL=RQH6WDQGDUG:DOO0RXQWHG,QGRRU8QLW6SHFL¿FDWLRQV
GENERAL DATA
6SHFL¿FDWLRQV
Model Name LMN079HVT LSN090HSV5 LSN120HSV5 LMN159HVT LSN181HSV5 LMN249HVT
Nominal Cooling Capacity (Btu/h)17,000 9,000 12,000 14,300 18,000 24,000
Nominal Heating Capacity (Btu/h)18,100 10,900 13,600 15,600 21,600 25,600
Operating Range
Cooling (°F WB) 57-77
Heating (°F DB) 59-81
Fan
Type Cross Flow
Motor Output (W) x Qty. 30 x 1 60 x 1
Motor/Drive Brushless Digitally Controlled / Direct
Airflow Rate CFM (H/M/L) 254 / 204 / 148 268 / 218 / 169 282 / 233 / 177 314 / 268 / 184 558 / 438 / 353 597 / 452 / 367
Unit Data
Refrigerant Type2R410A
Refrigerant Control Electronic Expansion Valve (EEV)
Power Supply V, Ø, Hz3208-230, 1, 60
Rated Amps (A) 0.4
Sound Pressure Level ±3 dB(A) (H/M/L)435 / 31 / 26 36 / 32 / 27 38 / 34 / 29 42 / 38 / 32 44 / 38 / 34 46 / 41 / 36
Dimensions (W x H x D, in.) 32-15/16 x 12-1/8 x 7-7/16 39-9/32 x 13-19/32 x 8-9/32
Net Unit Weight (lbs.) 18.3 25.6
Shipping Weight (lbs.) 23.4 32.2
Power Wiring / Communications
Cable (No. x AWG)54 x 14
Heat Exchanger (Row x Column x Fin
/ inch) x Number (2 x 23 x 22) x 1 (2 x 16 x 20) x 1
Pipe Size
Liquid (in.) 1/4
Vapor (in.) 3/8 1/2
Connection Size
Liquid (in.) 1/4 3/8 1/4
Vapor (in.) 3/8 5/8 1/2
Drain O.D. / I.D. (in.) 27/32, 5/8
1Nominal capacity is rated 0 ft. above sea level with corresponding refrigerant piping length in accor-
dance with standard length of each outdoor unit and a 0 ft. level difference between outdoor and indoor
units. All capacities are net with a combination ratio between 95 – 105%.
Nominal cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF
wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Nominal heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF
wet bulb (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
2This unit comes with a dry helium charge.
3Acceptable operating voltage: 187V-253V.
4Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745 and are the
same in both cooling and heating mode. These values can increase due to ambient conditions during
operation.
5All power wiring / communications cable to the IDUs be minimum 14 AWG, 4-conductor, stranded,
shielded or unshielded (if shielded, must be grounded to chassis at ODU only) and must comply with
applicable local and national codes.

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GENERAL DATA
'LPHQVLRQV
Figure 3: LMN079HVT, LSN090HSV5, LSN120HSV5, and LMN159HVT Dimensions.
Unit : Inch (mm)
30-3/16 (767)
32-15/16 (837)
3-5/8 (92) 2-3/8 (60)
2-5/16
(59)
12-1/8 (308)
7-7/16 (189)
32-15/16 (837)
1-1/2 (38)
Approx. 8-19/32 (218) to liquid pipe
Approx. 11-11/32 (288) to gas pipe
1-27/32(47)
5-3/16 (132)
In Case of Left Side Piping
Unit Outline
Connecting Gas/Liquid Pipe
12-1/8 (308)
2-7/32(56)
11/32 (9)
5/16 (8)
2 (51)
Air Intake
Air Outlet
Bottom
[28-5/32 (715)]
Air Outlet Hole
* If airflow direction control is available,
Cooling Heating
Up & Down Left & Right
Air Outlet Hole
Air Intake Hole
[5-29/32 (150)]
Air Intake Hole
Rear Rear
Right
Left
55°
15° 15°
85°
45°
55°
Attaching the Installation Plate, Drilling Hole
2-7/16 ( 61.5)
1-7/16 (33.5)
1-9/32 (32.7)
2-13/32 (61)
5-31/32 (152)
2-7/32 (56)
2 (51)
2-7/32 (56)
1/4 (6) x 1/8 (3)
1/8 (3) x 1/4 (6)
5/8 (15.3)
1-1/4 (31)
1-3/32 (50.2) 1-1/16 (26.2)
Refrigerant, Drain Pipe and Cable Routing Knock Out Hole
Refrigerant, Drain Pipe and Cable Routing Knock Out Hole
Terminal Block for Power Supply and Communication
Refrigerant, Drain Pipe and Cable Routing Knock Out Hole
Drain Hose
Connection
Display & Remote Controller Signal Receiver
Decoration Cover
7.66
Ø2-9/16”
Ø2-9/16"
Right Rear piping
Left Rear piping
Ø2-9/16"
C Type : 5.3C Type : 3.9
C Type
C Type : 16.5 C Type : 16.5
Place a Level on Raised Tab
Unit Outline
Installation Plate

14
Multi F Standard Wall-Mounted Indoor Unit
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GENERAL DATA
'LPHQVLRQV
Figure 4: LSN181HSV5 and LMN249HVT Dimensions.
Unit : Inch (mm)
[36-5/32 (918)]
Air Intake Hole
[6-11/16 (170)]
Air Intake Hole
[2-29/32 (74)]
Air Outlet Hole
Rear
39-9/32 (998)
2-1/4 (57)
2-7/32 (56)
3-17/32 (90)
Bottom Air
Outlet
[34-11/32 (872)]
Air Outlet Hole
13-19/32 (345)
2-3/8 (60)
7/16(11)
Air Intake
8-9/32 (210)
13-19/32 (345)
39-9/32 (998)
6-15/32 (164)
1-15/32 (37)
2-15/32 (63)
In case of Left Side Piping
Unit Outline
Approx. 9-7/16 (240) to gas pipe
Approx. 6-5/16 (160) to liquid pipe
Connecting Gas/Liquid Pipe
2-3/8 (60)
2-3/8 (60)
Rear
Left Right
If airflow direction control is available,*
Cooling Heating
Up & Down Left & Right
50°
15°
20°
85°
45°
50°
Attaching the Installation Plate, Drilling Hole
7/16 (11)
2-3/8 (60)
2-7/16 ( 61.5)
1-7/16 (33.5)
1-9/32 (32.7)
2-13/32 (61)
5-31/32 (152)
1/4 (6) x 1/8 (3)
1/8 (3) x 1/4 (6)
5/8 (15.3)
1-1/4 (31)
1-3/32 (50.2) 1-1/16 (26.2)
Refrigerant, Drain Pipe and Cable Routing Knock Out Hole
Refrigerant, Drain Pipe and Cable Routing Knock Out Hole
Display & Remote Controller Signal Receiver
Terminal Block for Power Supply and Communication
Refrigerant, Drain Pipe and Cable Routing Knock Out Hole
Drain Hose
Connection
Decoration Cover
C Type: 19.4 C Type: 19.8
Place a Level on Raised Tab
Unit Outline
3.3
C Type: 5.3
Measuring Tape
Ø2-9/16"
3.3
Measuring Tape
Hanger
Ø2-9/16
"
C Type: 5.9
Right Rear piping
Left Rear piping

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GENERAL DATA
5HIULJHUDQW3LSLQJ'LDJUDP
Gas pipe connection port
(flare connection)
Liquid pipe connection port
(flare connection)
Cooling
Heating
Thermistor for
Evaporator Inlet Temperature
Thermistor for
Indoor Air Temperature
Thermistor for Evaporator
Outlet Temperature
Heat Exchanger
Cross Flow Fan
M
Table 3: Multi F Standard Wall-Mounted Indoor Unit
Refrigerant Pipe Sizes.
Model No. Vapor (inch) Liquid (inch)
LMN079HVT
Ø3/8
Ø1/4
LSN090HSV5
LSN120HSV5
LMN159HVT
LSN181HSV5 Ø1/2
LMN249HVT
Table 4: Multi F Standard Wall-Mounted Indoor Unit
Refrigerant Pipe Connections.
Description PCB Connector
Indoor Air Temperature Thermistor CN-TH1
Evaporator Inlet Temperature Thermistor
Evaporator Middle Temperature Thermistor CN-TH2
Evaporator Outlet Temperature Thermistor
Water Level Sensor (Optional) CN-TH3
Figure 5: Multi F Standard Wall-Mounted Indoor Unit Refrigerant Flow Diagram (9HVT and HSV5).
Table 5: Multi F LSNxxxHSV5 Standard Wall-Mounted Indoor Unit
Thermistor Details.
Model No. Vapor (inch) Liquid (inch)
LMN079HVT
Ø3/8 Ø1/4
LSN090HSV5
LSN120HSV5
LMN159HVT
LSN181HSV5 Ø5/8 Ø3/8
LMN249HVT Ø1/2 Ø1/4
Description PCB Connector
Indoor Air Temperature Thermistor CN-TH1
Evaporator Inlet Temperature Thermistor
Evaporator Outlet Temperature Thermistor CN-TH2
Water Level Sensor (Optional) CN-TH3
Table 6: Multi F LMNxxxHVT Standard Wall-Mounted Indoor Unit
Thermistor Details.

16
Multi F Standard Wall-Mounted Indoor Unit
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Unpack and Inspect for Freight Damage
CAUTION
6KLSSLQJDQGQHWZHLJKWVRIWKHZDOOPRXQWHGXQLWVDUHOLVWHGLQWKHVSHFL¿FDWLRQVWDEOH7RKHOSDYRLGLQMXU\WRSHUVRQQHODQGGDPDJHWRWKHXQLW
use two people when carrying a unit by hand.
• Shipping and net weights of the ceiling cassette units are listed in the specification tables in the beginning of this manual. To help avoid dam-
age to the unit, use at least two people when carrying a unit by hand.
• Before opening the shipping container, check the container labeling to verify the unit received is the correct unit. Verify the unit capacity, type,
and voltage. Refer to the “Unit Nomenclature” chart in the beginning of this manual.
• After opening, if the unit is damaged, repack the unit as it was shipped to you. RETAIN ALL PACKING MATERIALS. In general, freight damage
claims will be denied if the original packing materials are not retained for the claims adjustor to inspect. Contact your supervisor on how to
proceed with filing a freight claim and to order a replacement unit.
• To avoid damaging the indoor unit, do not unpack the unit and remove the protective materials until it is ready to install. Before unpacking,
carefully move the packaged unit to a work area near the installation location.
1. Before opening the shipping container, verify that the correct unit is present as described in the Note above.
2. Place the box on a solid surface right side up.
3. Cut the white reinforced nylon straps.
4. Open the top of the box and fold back all four flaps.
5. Remove the protective cardboard / Styrofoam®top sheet and place to the side.
6. The walls and top panels are not attached to the bottom of the box. Lift the cardboard carton by the flaps and remove the box walls and
top and place it to the side.
7. Remove the moisture barrier plastic bonnet.
8. Check the unit nameplate data and model number. Verify the unit voltage and capacities are correct before proceeding.
9. Locate and retain the included parts located in the box.
10. Using two people, carefully lift the unit and inspect for freight damage. DO NOT lift by the refrigerant piping or drain pipe stub. Lift by
the frame only. If damage is found, repack the unit as it was received in the original container.
INSTALLATION
8QSDFNDQG,QVSHFW

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Location Selection
Follow required best practices when choosing a location for the indoor units..
DANGER
7RDYRLGWKHSRVVLELOLW\RI¿UH GRQRWLQVWDOOWKHXQLWLQDQDUHDZKHUHFRPEXVWLEOHJDVZLOOJHQHUDWHÀRZVWDJQDWHRUOHDN)DLOXUHWRGRVRZLOO
cause serious bodily injury or death. Before beginning installation, read the safety summary at the beginning of this manual.
Select a location for installing the wall-mounted indoor unit (IDU) that meets the following conditions:
Do’s
• Ensure that the wall is solid and has enough structural strength to bear the weight of the installation plate and indoor unit.
• Include enough space for service access.
• Place the unit in a location where drainage can be obtained easily and to minimize the length of the condensate drain piping; include space
for drainage to ensure condensate flows properly out of the unit when it is in cooling mode.
• Place the unit in a location where air circulation will not be blocked; keep proper distances from ceilings, doorways, floor, walls, etc.
• Place the unit in a location where operating sound from the unit will not disturb occupants--place the unit where noise prevention is taken
into consideration
• Ensure there is sufficient space from the ceiling and floor.
• Use a level indicator to ensure the unit is installed on a level plane.
• Use a stud finder to locate studs easily, preventing unnecessary damage to the wall.
• Locate the indoor unit in a location where it can be easily connected to the outdoor unit / branch distribution unit.
Don’ts
• Do not install the unit where it will be subjected to direct thermal radiation from other heat sources.
• Do not install the unit in a location where acidic solution and spray (sulfur) are often used.
• Do not use the unit in environments where oil, steam, or sulfuric gas are present.
• Do not install additional ventilation products on the chassis of the unit.
• Avoid installing the unit near high-frequency generator sources.
• Do not install the unit near a doorway.
• Do not install the unit near a heat or steam source, or where considerable amounts of oil, iron powder, or flour are used. These materials
will generate condensate, cause a reduction in heat exchanger efficiency, or malfunction of the condensate drain. If this is a potential problem,
install a ventilation fan large enough to vent out these materials.
7KHXQLWPXVWQRWEHLQVWDOOHGZKHUHVXOIXULFDFLGDQGÀDPPDEOHRUFRU-
URVLYHJDVHVDUHJHQHUDWHGYHQWHGLQWRRUVWRUHG7KHUHLVULVNRI¿UH
explosion, and physical injury or death.
7KHXQLWZLOOEHGDPDJHGZLOOPDOIXQFWLRQDQGRUZLOOQRW
operate as designed if installed in any of the conditions
listed.
INSTALLATION
,QGRRU8QLW/RFDWLRQ6HOHFWLRQ
Install a ventilation fan
with sufficient capacity
Heat or steam source
Indoor Unit
Include enough
distance
Figure 6: Installing Near a Heat or Steam Source.
NOTE

18
Multi F Standard Wall-Mounted Indoor Unit
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INSTALLATION
/RFDWLRQ6HOHFWLRQ5HTXLUHG&OHDUDQFHV
• Indoor units (IDUs) must not be placed in an environment where the IDUs will be exposed to harmful volatile organic compounds (VOCs) or in
environments where there is improper air make up or supply or inadequate ventilation. If there are concerns about VOCs in the environment
where the IDUs are installed, proper air make up or supply and/or adequate ventilation must be provided. Additionally, in buildings where IDUs
will be exposed to VOCs, consider a third party factory-applied epoxy coating to the fan coils for each IDU where the entire coil is dipped, not
sprayed.
• If the unit is installed near a body of water, the installation parts are at risk of corroding. Appropriate anti-corrosion methods must be taken for
the unit and all installation parts.
Installing in an Area Exposed to Unconditioned Air
In some installation applications, areas (floors, walls) in some rooms will be exposed to unconditioned air (room will be above or next to an
unheated garage or storeroom). To countermeasure:
• Verify that carpet is or will be installed (carpet will increase the temperature by three degrees).
• Add insulation between the floor joists.
• Install radiant heat or another type of heating system to the floor.
Required Clearances
The figure at right and table below list required clearance distances
around a typical installed wall-mounted unit.
Minimum clearance
from ceiling - “A”
More than 4 inches
More than
4 inches
At least 6.5 feet from the floor
“A” Ceiling Clearance (inches) Indoor Unit Model(s)
5LMN079HVT, LMN159HVT,
LSN090HSV5, LSN120HSV5
8 LSN181HSV5, LMN249HVT
Table 7: Standard Wall Mount Indoor Unit Ceiling Clearances.
Figure 7: Standard Wall Mount Indoor Unit Clearance Requirements.
NOTE

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Installation Manual
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Drilling the Piping Hole in the Wall
Follow all piping clearance recommendations.
1. Using a 2-9/16 to 2-5/8 inch hole core drill bit (depending on indoor model type), drill a
hole at either the right or left side of the wall mounting, pre-chosen following installation
guidelines and application needs.
• The slant of the hole must be 3/16” to 5/16” from level with the slant being upward on
the indoor unit side and downward on the outdoor unit side.
2. Finish off the newly drilled hole as shown with bushing and sleeve covering to prevent
damage to the insulation and piping.
(3/16"~5/16")
Indoor
WALL
Outdoor
Bushing
Core Drill
Sleeve
Figure 8: Choice of Piping / Wiring Routes.Wall-mounted indoor units have several options on how the piping
and wiring can be routed (see figure at right). Whichever way the
piping and wiring are routed out of the indoor units, the mounting
wall on which the indoor unit is installed must be strong and solid
enough to protect it from vibration.
• Mount the installation plate on the wall using the Type “A” screws.
If mounting the unit on concrete, consider using anchor bolts.
• Always mount the installation plate horizontally. Measure the wall
and mark the center line using thread and a level.
Right Side
Piping
Piping / Drain Hose Holder
Left Side Piping
Rear
Piping
Figure 9: Drilling Piping Hole.
General Guidelines — HVT and HSV5 Wall-Mounted Indoor Units
INSTALLATION
&KRRVH3LSLQJDQG:LULQJ5RXWH'ULOOLQJ3LSLQJ+ROH
WARNING
• Mounting hardware must be securely installed to prevent the chassis falling from its installation location. There is risk of injury or property
damage from falling equipment.
• When choosing a location for the wall mount plate, be sure to take into consideration routing of wiring for power outlets within the wall. Touch-
ing wiring can cause serious bodily injury or death.
• Installation work must be performed by trained personnel and in accordance with all local or other applicable codes. There is risk of injury to
personnel from incorrect installation
• Ensure the unit is properly installed. Incorrectly installed units can result in degraded performance or an inoperative unit / system.
• Use a level indicator to ensure the installation plate and chassis are installed on a level plane.
• Mounting hardware must be securely installed to prevent the chassis falling from its installation location. There is risk of property damage
from falling equipment.
• If the unit is installed near a body of water, certain components are at risk of being corroded. Appropriate anti-corrosion methods must be
taken for the unit and all components.
NOTE

20
Multi F Standard Wall-Mounted Indoor Unit
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Figure 12: Installation Plate for LMN079HVT, LMN159HVT, and
LSN090-120HSV5 Indoor Units.
Figure 13: Installation Plate for LSN181HSV5 and LMN249HVT Indoor
Units.
INSTALLATION
3UHSDULQJIRU,QVWDOODWLRQ
WARNING
• Mounting hardware must be securely installed to prevent the frame falling from
its installation location. There is risk of personnel injury from falling equipment.
• When choosing a location for the wall mount plate, take into consideration routing
of wiring for power outlets within the wall. Contacting wiring can cause serious
bodily injury or death.
• Use caution when drilling holes through the walls for the purposes of piping con-
nections. Power wiring can cause serious bodily injury or death.
• Installation work must be performed by trained personnel and in accordance with
all local or other applicable codes. There is risk of injury to personnel from incor-
rect installation.
• Mounting hardware must be securely installed to prevent the frame falling from
its installation location. There is risk of property damage from falling equipment.
• Select the location carefully. Unit must be anchored to a strong and solid wall to
prevent unnecessary vibration, and to securely hold the installation place and the
weight of the frame.
• Ensure the unit is properly installed. Incorrectly installed units can result in de-
graded performance or an inoperative unit/system.
• Use a level indicator to ensure the installation plate and chassis are installed on
a level plane.
• If the unit is installed near a body of water, certain components are at risk of be-
ing corroded. Appropriate anti-corrosion methods must be taken for the unit and
all components.
Follow the procedure below and general best practices when mounting the indoor
unit’s installation plate to a wall.
1. The wall mounted indoor unit is shipped with the installation plate attached to
its back. To remove, unscrew the one (1) screw that holds the installation plate
to the back of the indoor unit. See the installation plate diagrams below.
2. Always mount the installation plate horizontally. Align the centerline using a
leveling tool. Measure the wall and mark the centerline.
3. Attach the installation plate to the wall following the measurements and marks.
Mount the installation plate on the wall using the factory-supplied Type “A”
VFUHZV,IPRXQWLQJWKHXQLWRQDFRQFUHWHZDOOXVH¿HOGVXSSOLHGDQFKRU
bolts. Use a level to ensure the plate is level.
4. Observe all rear piping clearances when drilling into the wall.
Figure 11: Installation Plate Attaching Screw Placement
(Example Only. Appearances and Placement Will Vary
Depending on Model).
Installation Plate
Frame
Hooks
Type "A" Screws
Figure 10: General Wall Mount Indoor Unit Installation Plate—
Side View (Example Only. Appearances Will Vary Depending
on Model).
A-Type
B-Type
Mounting the Installation Plate to the Wall
(Unit : Inch)
7.66
Ø2-9/16”
Ø2-9/16"
Right Rear piping
Left Rear piping
Ø2-9/16"
C Type : 5.3C Type : 3.9
C Type
C Type : 16.5 C Type : 16.5
Place a Level on Raised Tab
Unit Outline
Installation Plate
C Type: 19.4 C Type: 19.8
Place a Level on Raised Tab
Unit Outline
3.3
C Type: 5.3
Measuring Tape
Ø2-9/16"
3.3
Measuring Tape
Hanger
Ø2-9/16 "
C Type: 5.9
(
Unit : Inch
Right Rear piping
Left Rear piping
NOTE