LG LD187HHV4 Installation and operation manual

SINGLE-ZONE
CEILING-CONCEALED
DUCTED LGRED°SYSTEM
ENGINEERING MANUAL
Single-Zone Ceiling-Concealed
Ducted Heat Pump Systems
1-1/2 to 4 Tons
High Static
LH248HHV4 (24,000 Btu/h)
High Static
LH368HHV4 (36,000 Btu/h)
LH428HHV (42,000 Btu/h)
LH488HHV (48,000 Btu/h)
Low Static
LD187HHV4 (18,000 Btu/h)

For continual product development, LG Electronics U.S.A., Inc., reserves the right to change specifications without notice.
© 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.
For more technical materials such as submittals, catalogs, installation,
owner’s, and service manuals, visit www.lghvac.com.

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Introduction
TABLE OF CONTENTS
TABLE OF SYMBOLS
DANGER 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.
CAUTION This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury.
Note:
This symbol indicates situations that may result in equipment or property damage accidents only.
This symbol indicates an action that must not be performed.
Unit Nomenclature............................................................................ 4
LG Air Conditioner
Technical Solution (LATS) ............................................................... 5
0HFKDQLFDO6SHFLÀFDWLRQV............................................................... 8
Ceiling-Concealed Ducted System................................................. 8
General Data ................................................................................... 10
Ceiling Concealed Ducted Pairing Table ......................................10
*HQHUDO'DWD6SHFLÀFDWLRQV........................................................ 11
Low Static Ducted......................................................................... 11
High Static Ducted........................................................................ 12
Electrical Data................................................................................. 13
)XQFWLRQV&RQWUROVDQG2SWLRQV................................................. 14
Indoor Unit .................................................................................... 14
Outdoor Unit ................................................................................. 15
2XWGRRU8QLW'LPHQVLRQV.............................................................. 16
,QGRRU8QLW'LPHQVLRQV................................................................. 18
$FRXVWLF'DWD.................................................................................. 22
Sound Pressure for Outdoor Units ............................................... 22
Sound Pressure for Indoor Units ..................................................24
2XWGRRU8QLW5HIULJHUDQW)ORZ'LDJUDP....................................... 27
,QGRRU8QLW5HIULJHUDQW)ORZ'LDJUDP.......................................... 29
2XWGRRU8QLW:LULQJ'LDJUDP........................................................ 32
,QGRRU8QLW:LULQJ'LDJUDP........................................................... 34
(OHFWULFDO&RQQHFWLRQV................................................................... 37
Wiring Connections ...................................................................... 40
Indoor Units .................................................................................. 43
([WHUQDO6WDWLF3UHVVXUH ................................................................ 44
Indoor Units .................................................................................. 44
$FFHVVRULHV .................................................................................... 45
3HUIRUPDQFH'DWD........................................................................... 49
Low Static Ducted Cooling Capacity Tables ................................. 49
High Static Ducted Cooling Capacity Tables ................................50
Low Static Ducted Maximum Cooling Capacity Tables................. 54
High Static Ducted Maximum Cooling Capacity Tables................ 55
Low Static Ducted Heating Capacity Tables ................................. 59
High Static Ducted Heating Capacity Tables ................................ 60
Low Static Ducted Maximum Heating Capacity Tables ................64
High Static Ducted Maximum Heating Capacity Tables................ 65
Equipment Selection Procedure ...................................................70
3ODFHPHQW&RQVLGHUDWLRQV ............................................................ 72
Indoor Unit .................................................................................... 72
Outdoor Unit ................................................................................. 76
&OHDUDQFHV ...................................................................................... 84
Outdoor Unit ................................................................................. 84
,QVWDOOLQJ2XWGRRU8QLWV,QGRRUV .................................................. 87
5HIULJHUDQW3LSLQJ'HVLJQ ............................................................. 90
Design Guideline Summary.......................................................... 90

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4|INTRODUCTION
Single Zone Ceiling-Concealed Ducted System Engineering Manual
UNIT NOMENCLATURE
H248 H
System Type:
Style:
SV = High Efficiency Inverter
VP = Gallery
YV = Premier
EV = Mega
V = Standard Inverter
T = Thermostat Compatible
Nominal Capacity
(Nominal cooling capacity in Btu/h):
Frame Type:
A: Art Cool™
S: Standard
C: Four-Way Ceiling-Cassette
D: Ceiling-Concealed Duct (Low Static)
H: Ceiling-Concealed Duct (High Static)
V: Vertical-Horizontal Air Handling
L = LG
18 = 18,000
24 = 24,000
36 = 36,000
42 = 42,000
48 = 48,000
L V 4N
N: Indoor Unit
U: Outdoor Unit
No N or U: System
H = Heat Pump
Generation:
H
System Type:
H = LGRED°Outdoor Unit

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Introduction
LG AIR CONDITIONER
TECHNICAL SOLUTION (LATS)
LG Air Conditioner Technical Solution (LATS) Software
A properly designed and installed refrigerant piping system is critical to the optimal performance of LG air-conditioning systems. To assist
engineers, LG offers, free of charge, LG Air Conditioner Technical Solution (LATS) software—a total design solution for LG air conditioning
systems. Contact your LG Rep for the best software program for your application.
To reduce the risk of designing an improper applied system or one that will not operate correctly, LG requires that LATS software be used on all projects.
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LATS is available to LG customers in three user interfaces: LATS HVAC, LATS CAD2, and LATS Revit. All three LATS formats are available
through www.myLGHVAC.com, or contact an LG Sales Representative.
LATS HVAC is a Windows®-based application that aids engineers in designing LG Variable Refrigerant Flow (VRF), Multi F / Multi F MAX,
Single-Zone, and Energy Recovery Ventilator (ERV) systems.
*Windows®is a registered mark of Microsoft®Corporation.
LATS CAD2 combines the LG LATS program with AutoCAD®
software**. It permits engineers to layout and validate LG Multi V
Variable Refrigerant Flow (VRF), Multi F / Multi F MAX, Single-Zone,
and Energy Recovery Ventilator (ERV) systems directly into CAD
drawings.
/$765HYLW integrates the LG LATS program with Revit®software**.
It permits engineers to layout and validate Multi V VRF systems
directly into Revit drawings.
**AutoCAD® and Revit® are both registered marks of Autodesk, Inc.
)HDWXUHV
All LG product design criteria have been loaded into the program,
making LATS simple to use: double click or drag and drop the
component choices. Build systems in Tree Mode where the refriger-
ant system can be viewed. Switch to a Schematic diagram to see the
electrical and communications wiring.
LATS software permits the user to input region data, indoor and outdoor design temperatures, modify humidity default values, zoning, specify
type and size of outdoor units and indoor units, and input air flow and external static pressure (ESP) for ducted indoor units.
The program can also:
• Import building loads from a separate Excel file.
• Present options for outdoor unit auto selection.
• Automatically calculate component capacity based on design
conditions for the chosen region.
• Verify if the height differences between the various system
components are within system limits.
• Provide the correct size of each refrigerant piping segment and LG
Y-Branches and Headers.
• Adjust overall piping system length when elbows are added.
• Check for component piping limitations and flag if any parameters
are broken.
• Factor operation and capacity for defrost operation.
• Calculate refrigerant charge, noting any additional trim charge.
• Suggest accessories for indoor units and outdoor units.
• Run system simulation.
Features depend on which LATS program is being used, and the type of system being designed.
Figure 1:Example of LATS CAD2.

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6|INTRODUCTION
Single Zone Ceiling-Concealed Ducted System Engineering Manual
/$76*HQHUDWHVD&RPSOHWH3URMHFW5HSRUW
LATS software also generates a report containing project design parameters, cooling and heating design data, system component perfor-
mance, and capacity data. The report includes system combination ratio and refrigerant charge calculations; and provides detailed bill of
material, including outdoor units, indoor units, control devices, accessories, refrigerant pipe sizes segregated by building, by system, by pipe
size, and by pipe segments. LATS can generate an Excel GERP report that can imported into the LG SOPS pricing and ordering system.
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LG encourages a two report design-to-install-procedure. After the
design engineer determines building / zone loads and other details,
the engineer opens the LATS program and inputs the project’s infor-
mation. When the design is complete, the “Auto Piping” and “System
Check” functions must be used to verify piping sizes, limitations, and
if any design errors are present. If errors are found, engineers must
adjust the design, and run Auto Piping and System Check again.
When the design passes the checks, then the engineer prints out
a project “Shop Drawing” (LATS Tree Diagram) and provides it to
the installing contractor. The contractor must follow the LATS Tree
Diagram when building the piping system, but oftentimes the design
changes on the building site:
• Architect has changed location and/or purpose of room(s).
• Outdoor unit cannot be placed where originally intended.
• Structural elements prevent routing the piping as planned.
• Air conditioning system conflicts with other building systems (plumbing, gas lines, etc.).
The contractor must mark any deviation from the design on the Shop Drawing, including as-built straight lines and elbows. This “Mark Up”
drawing must be returned to the design engineer or Rep, who must input contractor changes into the LATS file. (Copy the original LATS soft-
ware file, save and rename as a separate file, and modify all piping lengths by double-clicking on each length and editing information.) Like
the shop drawing, the Auto Piping and System Check must also be run on this new “As Built” drawing. The design engineer or Rep must then
provide the final As Built file to the contractor. The Mark Up version must be compared to the As Built version for the following:
• Differences in pipe diameter(s). If incorrect diameters have been installed, the piping must be changed out. If pipe diameters have changed,
check to see if Y-Branches will also need to be changed.
• Changes to outdoor unit and indoor unit capacities. Capacities changes may impact line length changes.
• Additional refrigerant charge quantity (“Trim Charge”). Trim charge will change if piping lengths and diameters change. The As Built version
must reflect installed piping lengths to ensure correct trim charge.
All documents submitted by the contractor, as well as the Shop Drawing and the As Built Drawing files must be provided for commissioning
purposes. Model and serial numbers for all system components must also be submitted. If the steps previously detailed are not followed, and
all documents are not provided to the LG Commissioner, the project runs the risk of not being commissioned and voiding any limited warranty
LG offers on the equipment.
LG AIR CONDITIONER
TECHNICAL SOLUTION (LATS)
Figure 2:Example of a LATS Tree Diagram.

CEILING-CONCEALED
DUCTED UNIT PRODUCT
DATA

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8|DUCTED
Single Zone Ceiling-Concealed Ducted LGRED°System Engineering Manual
MECHANICAL SPECIFICATIONS
Ceiling-Concealed Ducted System
General
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LG single zone ceiling-concealed ducted system comprises of a
single frame outdoor unit connected to a single indoor unit with a
single refrigerant circuit. An LG single zone ceiling-concealed ducted
system can operate in either cooling or heating mode. The system
is capable of changing mode within a maximum time of three (3)
minutes to ensure indoor temperature can be
properly maintained. LG components are manufactured in a facility
registered to ISO 9001 and ISO 14001, which is a set of
standards applying to environmental protection set by the
International organization for Standardization (ISO). The system
components comply with Underwriters Laboratories (UL) 1995
Heating and Cooling Equipment Standard for Safety and bear the
CSA label. Wiring in these units are in accordance with the national
Electrical Code (NEC). LG single zone ceiling-concealed ducted
systems have published performance ratings certified by AHRI (Air-
Conditioning, Heating, and Refrigeration Institute) and are listed in
the AHRI Standard 210/240 certified product directory.
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The outdoor unit has sound levels not exceeding 56 dB(A) tested in
an anechoic chamber under ISO Standard 3745.
Indoor Unit
Ceiling-Concealed Ducted units are designed for air volume against
an external static pressure up to 0.2”WG for the 18,000 Btu/h and
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Temperature Ranges
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5DQJHV
• Operating ranges for outdoor units of 5°F to +118°F (DB) for
cooling; -13°F to +64°F (WB) for heating.
• Cooling range can be extended from 5°F down to -4°F using the
Low Ambient Wind Baffle Kit (sold separately).
• Operating ranges for indoor units of 57°F to 77°F (WB) for cooling;
59°F to 81°F (DB) for heating.
• Indoor unit temperature setting range of 65°F to 86°F (DB) for
cooling; 61°F to 86°F (WB) for heating.
Casing / Frame
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The outdoor condensing unit case is constructed from pre-coated
metal (PCM) that has been tested in accordance with ASTM B-117
salt spray procedure for a minimum of 1,000 hours. Case has a
removable panel to allow access to major internal components, and
legs to secure the unit during installation.
Indoor Unit
The indoor unit casing is designed to mount fully concealed above
a finished ceiling. Casing is manufactured of galvanized steel plate.
Cold surfaces of the unit are covered internally with a coated poly-
styrene insulating material, and covered externally with sheet insula-
tion made of ethylene propylene diene monomer (M-Class) (EPDM).
External insulation is plenum rated and conforms to ASTM Standard
D-1418. Hanger brackets are included on the casing to support the
weight on four corners. The indoor unit has a front horizontal supply
air discharge, and one dedicated rear horizontal return air. The
supply air opening is flanged to accept field-installed ductwork that
must not exceed the external static pressure limitation of the unit.
Refrigerant System
The system is designed for use with R410A refrigerant, and consists
of a single refrigeration circuit. The refrigeration circuit is pressure-
tested at the factory and shipped with a holding charge of helium
gas. The outdoor unit is provided with factory installed components,
including a refrigerant strainer, accumulator, four-way reversing
valve, electronic expansion valve (EEV), high and low side charging
ports, service valves, and interconnecting piping. All refrigerant lines
from the outdoor unit to the indoor unit are field-installed and must
be insulated separately. LUU420HHV and LUU480HHV include a sub
cooled heat exchanger, vapor injection and vapor bypass circuit.
Figure 3: Ceiling-Concealed Ducted
System (LH248HHV4 High Static Model).

DUCTED | 9
Product Data
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Compressors
The 18,000 ~ 48,000 Btu/h outdoor units are equipped with one her-
metically sealed, digitally controlled, inverter-driven R1 scroll com-
pressor to modulate capacity (modulation in 1 Hz increments). Teflon
coated bearings, overcurrent protection, and vibration isolation are
integrated with the compressor.
Frequency ranges for the 18,000 ~ 48,000 Btu/h outdoor units are:
18 Btu/h = 10 to 95 Hz Cooling; 10 to 130 Hz Heating
24k Btu/h = 10 to 95 Hz Cooling; 10 to 130 Hz Heating
36k Btu/h = 15 to 120 Hz Cooling; 15 to 135 Hz Heating
42k Btu/h = 10 to 120 Hz Cooling; 10 to 135 Hz Heating
48k Btu/h = 10 to 120 Hz Cooling; 10 to 135 Hz Heating
Coil
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Heat pump outdoor unit coils are made of nonferrous louvered
aluminum fins protected with an integral coil guard. The coil for each
outdoor unit has a minimum of 14 fins per inch (FPI); heat exchanger
has two rows. The coil fins have a factory applied corrosion resistant
GoldFin™ material with hydrophilic coating tested in accordance with
ASTM B-117 salt spray test procedure for a minimum of 1,000 hours.
Coils are factory tested to a pressure of 551 psig.
Indoor Unit
Indoor unit coils are factory built and are comprised of aluminum fins
mechanically bonded to copper tubing. Each indoor unit has a mini-
mum of three rows of coils, which are pressure tested to 551 psig at
the factory. Each unit is provided with a factory installed condensate
drain pan below the coil.
Fans and Motors
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The 18,000 Btu/h (LUU180HHV), and 24,000 Btu/h (LUU240HHV)
outdoor units include one direct drive, variable speed axial / propel-
ler type fan with a horizontal air discharge; the 36,000 Btu/h outdoor
unit (LUU360HHV), 42,000 Btu/h outdoor unit (LUU420HHV), and
48,000 Btu/h outdoor unit (LUU480HHV) include two fans. Fan
blades are made of Acrylonitrile Butadiene Styrene (ABS) material,
and have a Brushless Digitally Controlled (BLDC) fan motor. The fan
motor has inherent protection, permanently lubricated bearings, and
variable speed with a maximum speed up to 800 rpm. Raised guards
are provided to limit contact with moving parts.
Indoor Unit
The 18,000 Btu/h (LDN187HV4) indoor unit has three direct-drive
Sirocco fans. The 24,000 Btu/h (LHN248HV) indoor unit has one
direct-drive Sirocco fan. The 36,000 Btu/h (LHN368HV), 42,000
Btu/h (LHN428HV), and 48,000 Btu/h (LHN488HV) indoor units have
two direct-drive, Sirocco fans made of high strength ABS GP-2200
polymeric resin.
The fans are statically and dynamically balanced, mounted on a
common brushless digitally controlled (BLDC) motor, and mounted
on vibration-attenuating rubber grommets. Fan speed is controlled
using a microprocessor-based direct digital control algorithm. The
indoor fan has Low, Med, High, and Auto settings for Cooling mode;
and has Low, Med, High, and Auto settings for Heating mode. The
Auto setting adjusts the fan speed based on the difference between
the controller set-point and space temperature.
Air Filter - Indoor Unit
The return air inlet on the indoor unit includes a factory-supplied
removable, washable filter that is accessible from the back of the
unit. Options include a return filter box that holds a field-provided
high efficiency one or two inch MERV-rated filters, and a LG-supplied
air cleaner (each sold separately).
Electrical
The system is designed to operate using 208–230 / 60 /1 power with
voltage variances of ±10% and includes overcurrent protection. The
indoor unit is powered through the outdoor unit.
Controls
Indoor and outdoor units are factory wired with necessary electrical
control components, printed circuit boards, thermistors, sensors,
terminal blocks, and lugs for power wiring. Factory installed
microprocessor controls in the outdoor unit and indoor unit perform
functions to efficiently operate the single zone system,
communicating via an 14 AWG four stranded and shielded conductor
power/transmission cable. Microprocessor-based algorithms provide
component protection, soft-start capability, refrigeration system
pressure, temperature, defrost, and ambient control. System can be
operated through a simple wired remote controller (required, but sold
separately).
Condensate Lift/Pump
The indoor unit is
provided with a factory
installed and wired
condensate lift/pump
capable of providing
a minimum 27-9/16 inch
lift from the bottom
surface of the unit.
The drain pump has a
safety switch to shut off
the indoor unit if the
condensate rises too
high in the drain pan.
MECHANICAL SPECIFICATIONS
Ceiling-Concealed Ducted System
Figure 4: Ceiling-Concealed Ducted
System (LD187HHV4 Low Static Model).

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10 | DUCTED
Single Zone Ceiling-Concealed Ducted LGRED°System Engineering Manual
Outdoor Unit Model Indoor Unit Model
Low Static
LUU180HHV LDN187HV4
High Static
LUU240HHV LHN248HV
LUU360HHV
LUU420HHV
LUU480HHV
LHN368HV
LHN428HV
LHN488HV
The following table shows the available outdoor and indoor units.
Table 1: Ceiling-Concealed Ducted System Pairing Table
GENERAL DATA
Ceiling Concealed Ducted Pairing Table
The above units require any LG wired remote controller for operation. The LG wired remote controller is sold separately.

EEV: Electronic Expansion Valve, IDU: Indoor Unit, ODU: Outdoor Unit. This unit comes with a dry
helium charge.
This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0 ft level differ-
ence between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb
(WB); and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
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).
1Power Input is rated at high speed.
2All power wiring/communication cables from ODU to IDU are field supplied and are to 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.
3Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or destroy
R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F) under section 608 of
CAA.
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 opera-
tion.
5Piping lengths are equivalent.
6Cooling range can be extended from 0°F/ 5°F down to -4°F using the Low Ambient Wind Baffle Kit
(sold separately).
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Type Single Zone Ceiling-Concealed Ducted (Low Static)
System (Model) (Indoor Unit / Outdoor Unit) LD187HHV4 (LDN187HV4 / LUU180HHV)
Cooling Capacity (Min ~ Rated ~ Max) (Btu/h) 7,200 ~ 18,000 ~ 22,000
Cooling Power Input1(kW) 0.51 ~ 1.44 ~ 2.00
EER (OD 95°F) 12.5
SEER 18.8
Heating Capacity (Min ~ Rated ~ Max) (Btu/h) 6,800 ~ 20,000 ~ 24,000
Heating Power Input1(Min ~ Rated ~ Max) (kW) 0.47 ~ 1.82 ~ 2.50
COP (OD 47°F) 3.22
HSPF 10
Rated Low Heating Capacity (Btu/h)
Outdoor 17°F (WB)/Indoor 70°F (DB) 12,620
Low COP (OD 17°F) 2.55
Maximum Heating Capacity (Btu/h)
Outdoor 17°F (WB) / Indoor 70°F (DB) 22,500
Outdoor 5°F (WB) / Indoor 70°F (DB) 20,000
Outdoor -13°F (WB) / Indoor 70°F (DB) 15,990
Power Supply V, Ø, Hz2208-230 / 1 / 60
Outdoor Unit Operating Range
Cooling (°F DB) 5 to 1186
Heating (°F WB) -13 to 64
Indoor Unit Operating Range
Cooling (°F WB) 57 to 77
Heating (°F DB) 59 to 81
Indoor Temperature Setting Range
Cooling (°F DB) 65 to 86
Heating (°F WB) 61 to 86
Unit Data
Refrigerant Type3R410A
Refrigerant Control EEV
Indoor Unit Sound Pressure Level dB(A) (H/M/L/SL)436 / 34 / 31 / 26
Outdoor Unit Sound Pressure Level dB(A) (Cool/Heat)451 / 52
Indoor Unit Net / Shipping Weight (lbs.) 48.5 / 57.3
Outdoor Unit Net / Shipping Weight (lbs.) 133.4 / 144.4
Power Wiring / Communications Cable (No. x AWG)2
Compressor (Type x Qty.) R1 Scroll x 1
Dehumidification Rate (pts./hr.) 3.84
Fan
Indoor Unit Type x Qty. Sirocco x 3
Outdoor Unit Type x Qty. Propeller x 1
Motor / Drive Brushless Digitally Controlled / Direct
Airflow Rate
Indoor Unit (H / M / L [CFM]) 530 / 441 / 353
Outdoor Unit (CFM) 2,048
Piping
Liquid (in.) (Connection size / Pipe size) 1/4 / 3/8
Vapor (in.) (Connection size / Pipe size) 1/2 / 5/8
Indoor Unit Condensate Drain O.D. / I.D. (in.) 1-1/4 / 1
Additional Refrigerant Charge (oz./ft.) 0.43
Minimum ~ Maximum Pipe Length (ft.) 16.4 ~ 164
Piping Length5(no additional refrigerant, ft.) 24.9
Maximum Elevation Difference (ft.) 98.4
Table 2: Ceiling-Concealed Ducted (Low Static) System General Data.
GENERAL DATA / SPECIFICATIONS
Low Static Ducted
DUCTED | 11
Product Data
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Type Single Zone Ceiling-Concealed Ducted (High Static)
System (Model) (Indoor Unit / Outdoor Unit)
LH248HHV4
(LHN248HV/
LUU240HHV
LH368HHV4
(LHN368HV /
LUU360HHV)
LH428HHV
(LHN428HV /
LUU420HHV)
LH488HHV
(LHN488HV /
LUU480HHV)
Cooling Capacity (Min ~ Rated ~ Max) (Btu/h) 9,200 ~ 23,000 ~ 32,000 14,400 ~ 36,000 ~ 44,000 16,800 ~ 42,000 ~ 50,000 18,400 ~ 46,000 ~ 55,000
Cooling Power Input1(kW) 0.66 ~ 1.92 ~ 3.49 0.70 ~ 3.00 ~ 5.50 1.19 ~ 3.49 ~ 5.30 1.40 ~ 3.93 ~ 5.75
EER2 (OD 95°F) 12.00 12.00 12.05 11.70
SEER2 16.75 18.30 18.70 17.70
Heating Capacity (Min ~ Rated ~ Max) (Btu/h) 8,000 ~ 27,000 ~ 36,000 16,000 ~ 40,000 ~ 46,000 18,000 ~ 48,000 ~ 57,600 19,000 ~ 50,000 ~ 60,000
Heating Power Input1(Min ~ Rated ~ Max) (kW) 0.58 ~ 2.16 ~ 4.10 0.84 ~ 3.37 ~ 4.50 1.34 ~ 4.37 ~ 5.80 1.40 ~ 4.54 ~ 6.20
COP (OD 47°F) 3.66 3.48 3.22 3.23
HSPF2 9.40 9.20 9.15 9.40
Power Supply V, Ø, Hz2208-230 / 1 / 60
Rated Low Heating Capacity (Btu/h)
Outdoor 17°F (WB) / Indoor 70°F (DB) 18,200 25,000 28,400 31,600
Low COP (OD 17°F) 2.73 2.63
2.93
2.93 2.87
Maximum Heating Capacity (Btu/h)
Outdoor 17°F (DB) / Indoor 70°F (DB) 29,500 41,700 50,700 52,800
Outdoor 5°F (DB) / Indoor 70°F (DB) 28,400 33,600 39,500 41,000
Outdoor -13°F (DB) / Indoor 70°F (DB) 21,600 30,000 34,510 36,010
Outdoor Unit Operating Range
Cooling (°F DB) 5 to 118
Optional Wind Baffle Cooling (°F DB) Yes (-4)
Heating (°F WB) -13 to 64
Indoor Unit Operating Range
Cooling (°F WB) 57 to 77
Heating (°F DB) 59 to 81
Indoor Temperature Setting Range
Cooling (°F) 65 to 86
Heating (°F) 61 to 86
Unit Data
Refrigerant Type3R410A
Refrigerant Control EEV
Indoor Unit Sound Pressure Level ±1 dB(A) (H/M/L/SL)437 / 35 / 34 / 32 36 / 34 / 33 / 33 39 / 37 / 35 / 34 42 / 40 / 39 / 35
Outdoor Unit Sound Pressure Level ±1 dB(A) (Cool/Heat)451 / 52 52 / 54 54 / 56 54 / 56
Indoor Unit Net / Shipping Weight (lbs.) 58.6 / 71.9 85.3 / 99.4 95.9 / 112.9 95.9 / 112.9
Outdoor Unit Net / Shipping Weight (lbs.) 133.4 / 144.4 198.9 / 223.1 210.9 / 234.1 210.9 / 234.1
Power Wiring / Communications Cable (No. x AWG)24 x 14
Compressor (Type x Qty.) R1 Scroll x 1 R1 Scroll x 1 R1 Scroll x 1 R1 Scroll x 1
Dehumidification Rate (pts./hr.) 3.48 7.9 7.19 7.61
Fan
Indoor Unit Type x Qty. Sirocco x 1 Sirocco x 2 Sirocco x 2 Sirocco x 2
Outdoor Unit Type x Qty. Propeller x 1 Propeller x 2 Propeller x 2 Propeller x 2
Motor / Drive Brushless Digitally Controlled / Direct
Airflow Rate
Indoor Unit (Max. / H / M / L [CFM]) 777 / 706 / 636 1130 / 998 / 847 1412 / 1200 / 988 1,765 / 1,589 / 1412
Outdoor Unit (CFM) 2,048 4238 4238 4238
Factory Set (High) External Static Pressure (in. wg) 0.24 0.24 0.24 0.24
Piping
Liquid (in.) (Connection size / Pipe size) 3/8 / 3/8
Vapor (in.) (Connection size / Pipe size) 5/8 / 5/8
Indoor Unit Condensate Drain O.D. / I.D. (in.) 1-1/ 4, / 1
Additional Refrigerant Charge (oz./ft.) 0.43
Minimum ~ Maximum Pipe Length (ft.) 16.4 ~ 164 16.4 ~ 246 16.4 ~ 246 16.4 ~ 246
Piping Length (no additional refrigerant, ft.) 24.9 24.9 24.9 24.9
Maximum Elevation Difference (ft.) 98.4 98.4 98.4 98.4
Table 3: Ceiling-Concealed Ducted (High Static) System General Data.
GENERAL DATA / SPECIFICATIONS
High Static Ducted
EEV: Electronic Expansion Valve, IDU: Indoor Unit, ODU: Outdoor Unit. This unit comes with a
dry helium charge.
This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0 ft level
difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF
wet bulb (WB); and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
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).
1Power Input is rated at high speed.
2All power wiring / communication cables from ODU to IDU are field supplied and are to be minimum
four-conductor, 14 AWG, stranded, shielded or unshielded (if shielded, it must be grounded to the
chassis of ODU only), and must comply with applicable local and national codes.
3Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F) under
section 608 of CAA.
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.
5Piping lengths are equivalent.
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12 | DUCTED
Single Zone Ceiling-Concealed Ducted LGRED°System Engineering Manual

ELECTRICAL DATA
Nominal
Tons
Unit Model
No. Hertz Voltage
Voltage
Range
(Min. to Max.)
MCA MOP Compressor
Quantity
Compressor
Motor RLA
(Cooling)
Locked
Rotor
Amps
Condenser Fan Motor(s)
Condenser
Fan Quantity.
Condenser Fan
Motor FLA
Low Static
1.5 LUU180HHV 60 208 - 230 187 - 253 22 30 1 14.5 23 1 1.6
High Static
2 LUU240HHV
60 208 - 230 187 - 253
22 30
1
14.5 23 1 1.6
3 LUU360HHV 32 40 22 33 2 1.6 x 2
3.5 LUU420HHV 32 40 22 33 2 1.6 x 2
4 LUU480HHV 32 40 22 33 2 1.6 x 2
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
RLA = Rated Load Amps.
MCA = Minimum Circuit Ampacity.
Maximum Overcurrent Protection (MOP) is calculated as follows:
(Largest motor FLA x 2.25) + (Sum of other motor FLA) rounded down
to the nearest standard fuse size.
Table 4: Electrical Data.
Electrical Data
DUCTED | 13
Product Data
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Table 5: Indoor Unit—Functions, Controls, and Options.
Indoor Unit Type Ceiling Concealed Ducted
(Low Static)
Ceiling Concealed Ducted
(High Static)
Air-
ÀRZ
Air supply outlets 11
Airflow steps (fan/cool/heat) 3 / 3 / 3 3 / 3 / 3
Washable anti-fungal filter1¥¥
Operation
Drain pump ¥¥
E.S.P. control ¥¥
Auto E.S.P. control - applicable to 24-48k IDUs manufactured
October 2020 and after -¥
Hot Start ¥¥
Self diagnostics ¥¥
Auto changeover ¥¥
Auto restart ¥¥
Child lock ¥¥
Sleep mode ¥¥
Timer (on/off) ¥¥
Weekly schedule ¥¥
Two thermistor control oo
Simple wired remote controller oo
Wireless LCD remote control2oo
Dry contact oo
Dry contact (temperature setting) oo
Central control (LGAP) ¥¥
MultiSITE CRC1 PREMTBVC0 oo
MultiSITE CRC1+ PREMTBVC1 oo
Special
Functions
Wi-Fi3oo
Auxiliary Heater Relay Kit (PRARH1) oo
1Primary washable filters.
2Requires wired zone controller.
3Requires Wi-Fi module PWFMDD200.
¥ 6WDQGDUGIHDWXUH
o = Unit option
FUNCTIONS, CONTROLS, AND OPTIONS
Functions, Controls, and Options for LDN187HV4 LHN248HV, LHN368HV,
LHN428HV, LHN488HV
Indoor Unit
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14 | DUCTED
Single Zone Ceiling-Concealed Ducted LGRED°System Engineering Manual

Functions, Controls, and Options for LUU180HHV, LUU240HHV, LUU360HHV,
LUU420HHV, LUU480HHV
Table 6: Outdoor Unit—Functions, Controls, and Options.
Outdoor Unit
Category Functions LUU180HHV LUU240HHV LUU360HHV LUU420HHV LUU480HHV
Reliability
Defrost / Deicing OOOOO
High pressure sensor O O O O O
Phase protection X X X X X
Restart delay (3-minutes) O O O O O
Self diagnosis O O O O O
Soft start O O O O O
Convenience
Night Quiet Operation O O O O O
Mode Lock O O O O O
Pump Down (Forced
Cooling Operation)
OOOOO
Network solution (LGAP) O O O O O
Central
Controller
AC Smart 5 PACS5A000 PACS5A000 PACS5A000 PACS5A000 PACS5A000
ACP 5 PACP5A000 PACP5A000 PACP5A000 PACP5A000 PACP5A000
PI485 PMNFP14A1 PMNFP14A1 PMNFP14A1 PMNFP14A1 PMNFP14A1
Integration
Solution
MultiSITE
Communications Manager PBACNBTR0A PBACNBTR0A PBACNBTR0A PBACNBTR0A PBACNBTR0A
Special
Functions
AHU Communications Kit PAHCMR000 PAHCMR000 PAHCMR000 PAHCMR000 PAHCMR000
Low Ambient Wind Baffle ZLABGP04A ZLABGP04A ZLABGP04A
x 2
ZLABGP04A
x 2
ZLABGP04A
x 2
FUNCTIONS, CONTROLS, AND OPTIONS
Outdoor Unit
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o = Unit option
X = Not Available
DUCTED | 15
Product Data
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OUTDOOR UNIT DIMENSIONS
Figure 5: LUU180HHV, LUU240HHV Dimensions.
Dimensions for LUU180HHV, LUU240HHV
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16 | DUCTED
Single Zone Ceiling-Concealed Ducted LGRED°System Engineering Manual

OUTDOOR UNIT DIMENSIONS
Dimensions for LUU360HHV, LUU420HHV, LUU480HHV
Figure 6: LUU360HHV, LUU420HHV, LUU480HHV Unit Dimensions.
DUCTED | 17
Product Data
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INDOOR UNIT DIMENSIONS
Figure 7: LDN187HV4 Indoor Unit Dimensions.
Dimensions for LDN187HV4
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18 | DUCTED
Single Zone Ceiling-Concealed Ducted LGRED°System Engineering Manual

INDOOR UNIT DIMENSIONS
Figure 8: LHN248HV Indoor Unit Dimensions.
Dimensions for LHN248HV
DUCTED | 19
Product Data
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Figure 9: LHN368HV Indoor Unit Dimensions.
INDOOR UNIT DIMENSIONS
7-7/32
6-19/32
5-15/32
7/8
27-1/4
24-3/8
7-7/8
10-11/16
9-5/16
9-3/32
10-11/16 16-9/16
50-17/32
27/32
2-1/32
8-21/32
9-1/4
10-13/32
14-9/32
54-7/32 49-9/32
47-15/32
49-3/16
47-1/2
3-9/16
27-9/16
26-5/32
1-25/32
27-1/16
Dimensions for LHN368HV
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Single Zone Ceiling-Concealed Ducted LGRED°System Engineering Manual