LG ABNW18GBHC0 Product guide

Indoor unit
R410A
5CSB0-02B (Replaces 5CSB0-02A)
P/No. : MFL67502506
Compact

Preface
New era brings the more sophisticated and advanced buildings which in turn demands for specialized and optimized direct
expansion air conditioning systems. Also energy efficiency, low noise and low maintenance are the features which are
essential for these systems.
As a part of vertical integration LG makes all the key components in house, which gives us an edge to LG to make better
and latest technology products with best quality in optimized time.
These systems are equipped with inverter technology and R410A refrigerant which is perfect solution to various installation
locations.
This Engineering product data book incorporates information about the product itself, and installation, designing for these
systems.
The comprehensive study of this book will improve your knowledge about the system and its application in detail.
LG Electronics Inc.
Introduction
Indoor unit
Compact

Indoor unit
Compact
Compact
General information
1. Model line up
2. External Appearance
3. Nomenclature
Indoor unit

1. Model line up
2. External Appearance
General Information _ 1
General information
Indoor unit
Indoor unit
Compact
Category
Chassis
Name
Capacity Index [kW (kBtu/h)]
5.0(18) 7.1(24) 8.0(30) 10.0(36)
Ceiling
Concealed
Duct
Middle Static Pressure BH
●●
Middle Static Pressure (2)
M1
●
M2
●
• Ceiling Concealed Duct – Middle static pressure
ABNW18GBHC0 [UB18C NH0]
ABNW24GBHC0 [UB24C NH0]
• Ceiling Concealed Duct – Middle static pressure(2)
ABNW30GM1A0 [UM30 N14]
ABNW36GM2A0 [UM36 N24]

2_ General Information
3. Nomenclature
General information
Indoor unit
Indoor unit
Compact
3.1 Global Name
3.2 European Name
Series
A : Basic
C : Compact
Chassis name
Electrical rating
G: 1Ø, 220-240V, 50Hz
Nominal Capacity
Ex) 18,000 Btu/h Class →'18'
30,000 Btu/h Class →'30'
Model type
W : DC Inverter Heat pump
A*N : Indoor units using R410A
* Indicates Product type
B : Ceiling Concealed Duct
ABN W G30 1MA0
18,000 Btu/h Class →'18'
30,000 Btu/h Class →'30'
Serial number
Indoor Unit / Outdoor Units
N : Indoor Unit
U : Outdoor Unit
C : Compact
Nominal Capacity
Ex)
Product type
B, M : Ceiling Concealed Duct
Connectable Outdoor unit type
U : Indoor units only for Single A systems
Chassis name
BU N 1 430

Compact
Ceiling concealed duct - Middle static pressure
1. List of functions
2. Specifications
3. Dimensions
4. Piping diagrams
5. Wiring Diagrams
6. External pressure setting for
7. Sound levels
8. Controller
9. Installation
Indoor unit

Indoor unit
Compact
1. List of functions
Ceiling concealed duct - Middle static pressure _ 1
Indoor Units
Note
1. * : These functions need to connect the wired remote controller.
2. ** : It is included by default when the product is manufactured.
3. For synchro operation, some functions and accessories are not
available. Check the outdoor unit’s PDB.
O : Applied X : Not applied
Accessory model name : Installed at field, ordered and purchased
separately by the corresponding model name, supplied with sepa-
rate package
Category Functions
ABNW18GBHC0 [UB18C NH0]
ABNW24GBHC0 [UB24C NH0]
Air flow
Air purifying
Installation
Reliability
Convenience
Individual
control
Network
Solution
Special
function kit
Others
2
X
X
X
X
3 / 3 / 3
X
X / X
X
X
X
X
O
ABDPG
O
X
X
X
O
O
O
X
X
O
O
X
O
O
O
O
O
PQRCVSL0/PQRCVSL0QW/PREMTB001/PREMTBB01
X
PQRCVCL0Q / PQRCVCL0QW**
X
PQWRHQ0FDB
X
O
PQDSA / PDRYCB000
PDRYCB400
PDRYCB300
X
ABZCA
X
X
X
X
X
PQRSTA0
PZCWRCG3
Air supply outlet
Airflow direction control (left & right)
Airflow direction control (up & down)
Auto swing (left & right)
Auto swing (up & down)
Airflow steps (fan/cool/heat)
Chaos wind(auto wind)
Jet cool/heat
Swirl wind*
Triple filter (Deodorizing)
Plasma air purifier
Allergy Safe filter
Long-life prefilter (washable / anti-fungus)
Drain pump
E.S.P. control*
Electric heater
High ceiling operation*
Auto Elevation Grille
Hot start
Self diagnosis
Auto changeover
Auto cleaning
Auto operation(artificial intelligence)
Auto Restart
Child lock*
Forced operation
Group control*
Sleep mode
Timer(on/off)
Timer(weekly)*
Two thermistor control*
Wired remote controller
Premium wired remote controller
Simple wired remote controller
Simple Wired remote controller(for hotel use)
Wireless remote controller*
General central controller (Non LGAP)
Network Solution(LGAP)
Simple Dry contact (outside AC 220V power source)
2 Points Dry Contact (For setback)
Dry contact for Thermostat
PI 485(for Indoor Unit)
Zone controller
CTI(Communication transfer interface)
Electronic thermostat
Telecom shelter controller
Independent Power Module
CO2Sensor
Remote temperature sensor
Group control wire

Notes :
1. Wiring cable size must comply with the applicable local and national code.
2. Due to our policy of innovation some specifications may be changed without notification.
3. Sound Level Values are measured at Anechoic chamber.
Therefore, these values can be increased owing to ambient conditions during operation.
Model Name ABNW18GBHC0
[UB18C NH0]
ABNW24GBHC0
[UB24C NH0]
Power Supply V, Ø, Hz
Dimensions Body W x H x D
mm
W x H x D inch
Net Weight Body kg (lbs)
Heat
Exchanger
(Row x Column x Fins per inch) x No. -
Face Area m2(ft2)
Fan
Type -
Air
Flow
Rate
High-static
Mode
(Factory Set)
H / M / L m3/min
H / M / L ft3/min
External Static Pressure Pa (mmAq)
Fan Motor Type
-
Output W x No.
Dehumidification Rate
l / h (pts/h)
Sound Pressure Level H / M / L dB(A)
Sound Power Level Max. dB(A)
Piping
Connections
Liquid mm(inch)
Gas mm(inch)
Drain (O.D. / I.D.) mm
Safety Devices -
Power and Communication Cable (included Earth) No. x mm2(AWG)
220-240, 1, 50 220-240, 1, 50
882 × 260 × 450 882 × 260 × 450
34-23/32 x 10-1/4 x 17-23/32 34-23/32 x 10-1/4 x 17-23/32
25.3 (55.7) 26.1 (57.5)
(2 x 20x 18) x 1 (3 x 20x 18) x 1
0.58 (6.28) 0.58 (6.28)
Sirocco Fan Sirocco Fan
13.5 / 12.0 / 10.5 18.0 / 16.5 / 14.5
476 / 423 / 370 635 / 582 / 512
58.8 (6) 58.8 (6)
BLDC BLDC
154 x 1 154 x 1
1.1 (2.5) 2.12 (4.9)
36 / 34 / 32 38 / 36 / 34
59 63
Ø 6.35 (1/4) Ø 9.52 (3/8)
Ø 12.7 (1/2) Ø 15.88 (5/8)
Ø 32.0 / 25.0 Ø 32.0 / 25.0
Fuse Fuse
4C x 0.75 (18) 4C x 0.75 (18)
2_ Ceiling concealed duct - Middle static pressure
Indoor unit
Compact
2. Specifications
Indoor Units

76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea www.lge.com/airconditioner
CHASSIS CODE: BH
CEILING CONCEALED DUCT
Gas pipe connection
Name
Liquid pipe connection Drain pipe connection Air discharge Power supply connection
5
No.
2
4 3
1
Descripition
6
Air suction
Note
1. Unit should be installed in compliance with the installation manual in the product box. 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 3. The Unit is powered from the outdoor unit. Therefore power cable should be connected with the outdoor unit.
140
29
70
260
87
750
30
47
355
450
219
932
133
355
450
114
224
60
R37.5
47
24
49
21
882
158
260
65
108
64 243 212 243 119
75
115745
20
175
3
2
5
1
4
6
119
428
106 127
122
50
10 0
165
100
48
31
82
101
ABNW18GBHC0 [UB18C NH0] ABNW24GBHC0 [UB24C NH0]
[Unit : mm]
Indoor unit
Compact
3. Dimensions
Ceiling concealed duct - Middle static pressure _ 3
Indoor Units

Sirocco Fan
Heat exchanger Gas pipe connection port
(flare connection)
Liquid pipe connection port
(flare connection)
Cooling
Heating
M
Thermistor for
suction air
temperature
Thermistor for
evaporator outlet
temperature
Thermistor for
evaporator inlet
temperature
nRefrigerant pipe connection port diameters
Model Gas Liquid
[Unit : mm]
Ø12.7
Ø15.88
Ø6.35
Ø9.52
ABNW18GBHC0 [UB18C NH0]
ABNW24GBHC0 [UB24C NH0]
Description PCB Connector
Thermistor for suction air temperature CN-ROOM
Thermistor for evaporator inlet temperature CN-PIPE / IN
Thermistor for evaporator outlet temperature CN-PIPE / OUT
4_ Ceiling concealed duct - Middle static pressure
Indoor unit
Compact
4. Piping diagrams
Indoor Units
Models : ABNW18GBHC0 [UB18C NH0] / ABNW24GBHC0 [UB24C NH0]

Indoor unit
Compact
5. Wiring diagrams
Ceiling concealed duct - Middle static pressure _ 5
Indoor Units
Models : ABNW18GBHC0 [UB18C NH0] / ABNW24GBHC0 [UB24C NH0]

(E.S.P. Control) provide required constant air volume irrespective of E.S.P. charge.
(1) Open the rear cover of the wired remote-controller to set the mode.
(2) Select one of three selectable modes as follows.
nWithout zone system
1. Position V-H, F-H:
• This position sets the maximum E.S.P. as a default set.
2. Position V-L:
• This position sets the minimum E.S.P. as a default set.
nWith zone system
1. Position V-H:
• Maximum E.S.P. setting & Fan speed is varied according to the state of dampers by micom.
2. Position F-H:
• Maximum E.S.P. setting & Fan speed doesn't vary according to the opening & closing of dampers.
3. Position V-L:
• Minimum E.S.P. setting & Fan speed is varied according to the state of dampers by micom.
(3) Move the slide switch to set position.
(4) Close the rear cover and check if it works normally.
TH
R14H
SW TH
REMO
MAIN
2TH OP7
R18H
R17H
OP6
LO
STAND
SW HIGH
HI R03S
C070 R04S R02S
R01S
OP3 OP2 OP1
R19H
R11H
R13H R12H OP5R16H OP4
R15H
CO1H
V-L
V-H
F-H
Zone state / Defrost E.S.P
• Select the position after checking duct work and E.S.P. of the unit.
• Maunfactured in the position F-H.
CAUTION
6_ Ceiling concealed duct - Middle static pressure
Indoor unit
Compact
6. External pressure setting for
Indoor Units

Indoor unit
Compact
6. External pressure setting for
Ceiling concealed duct - Middle static pressure _ 7
Indoor Units
This is the function that decides the strength of the wind for each wind level and because this function is to make the instal-
lation easier.
• If you set ESP incorrectly, the air conditioner may malfunction.
• This setting must be carried out by a certificated-technician.
• Precaution shall be taken not to alter the E.S.P value corresponded to each air flow section.
• E.S.P value can be varied according to the products.
• In the case of going to the next air flow rate stage by pressing the fan-speed button during the setup of the E.S.P value,
the E.S.P value of previous air flow rate will be maintained by remembering the E.S.P value prior to the shift.
How to Set E.S.P. on the remote controller?
TEMP
FAN
SPEED
OPER
MODE
When pressing the button and
button simultaneously for more than 3
seconds, the system will be entered into
the installer setting mode.
- After entering into the installer setting
mode, select the E.S.P code value by
pressing the button.
* E.S.P code value : 03
1
Select the desired air flow rate with
the button. Whenever pressing
the button, [SLO
→ LO → MED → HI →
POW] will be indicated.
2
Select the desired air flow rate value
with the temperature up(▲), down(▼)
button.
* E.S.P value range : 0~255
-
E.S.P value will be indicated at the upper
right section of the display window.
3
When pressing the button, currently
established E.S.P value will be set up.
4
When pressing the button and
button simultaneously for more than 3
seconds after the setting has been
completed, the setting mode will be released.
- If there isn’t any button input for more
than 25 seconds, the installer setting
mode will also be released.
5
OPER
MODE
OPER
MODE
FAN
SPEED
FAN
SPEED
OPER
MODE

Table 1
8_ Ceiling concealed duct - Middle static pressure
Indoor unit
Compact
Indoor Units
Setting Value Static Pressure[mmAq(Pa)]
2.5(25) 4(39) 6(59) 8(78)
100 12.8 - - -
105 13.9 - - -
110 15.2 12.7 - -
115 16.5 14.0 - -
120 17.8 15.3 12.7 -
125 - 16.5 14.0 -
130 - 17.8 15.3 12.6
135 - - 16.5 13.5
140 - - 17.5 14.5
145 - - - 16.5
Setting Value Static Pressure[mmAq(Pa)]
2.5(25) 4(39) 6(59) 8(78)
105 13.9 - - -
110 15.2 12.7 - -
115 16.5 14.0 - -
120 17.8 15.3 12.7 -
125 - 16.5 14.0 -
130 - 17.8 15.3 12.6
135 - - 16.5 13.5
140 - - 17.6 14.5
145 - - - 16.5
150 - - - 18.0
(Unit: CMM)
(Unit: CMM)
Table 2
Model Mode Set value
External Static
Pressure
(mmAq(Pa))
CMM
Lower Limit of
External Static
Pressure
(mmAq(Pa))
Upper Limit of
External Static
Pressure
(mmAq(Pa))
ABNW18GBHC0
[UB18C NH0]
High-static
Mode
(Factory Set)
Hl
6(59)
13.5
2.5(25) 8(78)Mid 12.0
Low 10.5
ABNW24GBHC0
[UB24C NH0]
High-static
Mode
(Factory Set)
Hl
6(59)
18.0
2.5(25) 8(78)Mid 16.5
Low 14.5
Models : ABNW18GBHC0 [UB18C NH0]
Models : ABNW24GBHC0 [UB24C NH0]
6. External pressure setting for
125
119
114
142
135
125

7.1 Sound pressure level
Indoor unit
Compact
7. Sound levels
Ceiling concealed duct - Middle static pressure _ 9
Indoor Units
Overall
1.5m
2m 2m
DUCT
DISCHARGE SUCTION
DUCT
Notes:
- Data is valid at nominal operation condition
- Reference accoustic pressure 0dB = 20μPa.
- Sound level will vary depending on a range of factors such as
the construction(acoustic absorption coefficient) of particular
room in which the equipment is installed.
- The operating conditions are assumed to be standard.
Model
Sound Pressure Levels (dB(A),H-M-L)
External Static Pressure [mmAq(Pa)]
2.5(25) 4(39) 6(59) 8(78)
ABNW18GBHC0[UB18C NH0]
ABNW24GBHC0[UB24C NH0]
36-34-32 38-35-33 39-36-34 40-37-35
38-36-34 39-37-35 40-38-36 41-39-37
External Static Pressure 2.5(25) [mmAq(Pa)]
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0 dB = 20 μPa)
10
20
30
40
50
60
70
80
63 125 250 500 1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0 dB = 20 μPa)
10
20
30
40
50
60
70
80
63 125 250 500 1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
ABNW18GBHC0 [UB18C NH0] ABNW24GBHC0 [UB24C NH0]
nHigh
▲Mid
l Low
nHigh
▲Mid
l Low
hindicates values at ‘Standard Mode’.

7. Sound levels
Indoor unit
Compact
10 _ Ceiling concealed duct - Middle static pressure
Indoor Units
External Static Pressure 4(39) [mmAq(Pa)]
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0 dB = 20 μPa)
10
20
30
40
50
60
70
80
63 125 250 500 1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0 dB = 20 μPa)
10
20
30
40
50
60
70
80
63 125 250 500 1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
ABNW18GBHC0 [UB18C NH0] ABNW24GBHC0 [UB24C NH0]
nHigh
▲Mid
l Low
nHigh
▲Mid
l Low
External Static Pressure 6(59) [mmAq(Pa)]
Octave Band Sound Pressure Level (0 dB = 20 μPa) Octave Band Sound Pressure Level (0 dB = 20 μPa)
Octave Band Center Frequency (Hz)
10
20
30
40
50
60
70
80
63 125 250 500 1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Octave Band Center Frequency (Hz)
10
20
30
40
50
60
70
80
63 125 250 500 1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
ABNW18GBHC0 [UB18C NH0] ABNW24GBHC0 [UB24C NH0]
nHigh
▲Mid
l Low
nHigh
▲Mid
l Low
External Static Pressure 8(78) [mmAq(Pa)]
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0 dB = 20 μPa)
10
20
30
40
50
60
70
80
63 125 250 500 1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0 dB = 20 μPa)
10
20
30
40
50
60
70
80
63 125 250 500 1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
ABNW18GBHC0 [UB18C NH0] ABNW24GBHC0 [UB24C NH0]
nHigh
▲Mid
l Low
nHigh
▲Mid
l Low

Ceiling concealed duct - Middle static pressure _ 11
7. Sound levels
Indoor unit
Compact
Indoor Units
7.2 Sound power level
Model Sound power level [dB(A)]
H
ABNW18GBHC0 [UB18C NH0] 59
ABNW24GBHC0 [UB24C NH0] 63
Notes:
1. Operating condition
- Power source : 220-240V 50Hz / 220V 60Hz
- Cooling : Indoor temperature (27°C DB, 19°C WB), Outdoor temperature (35°C DB, 24°C WB)
- Heating : Indoor temperature (20°C DB, 15°C WB), Outdoor temperature (7°C DB, 6°C WB)
- External static pressure is according to “Standard mode” value. Refer the specifications.
2. Reference acoustic intensity 0dB = 10E-6μW/m2
3. Sound level will vary depending on a range of factors such as the construction
(acoustic absorption coefficient) of particular room in which the equipment in installed.
Octave Band Center Frequency (Hz)
Sound Power Level (0dB = 10E-6μW/m
2
)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
Octave Band Center Frequency (Hz)
Sound Power Level (0dB = 10E-6μW/m
2
)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
ABNW18GBHC0 [UB18C NH0] ABNW24GBHC0 [UB24C NH0]

12 _ Ceiling concealed duct - Middle static pressure
Indoor unit
Compact
8. Controller
Indoor Units
Simple Wired Remote Controller
Note :
• Display temperature can be different from actual room temperature if the remote controller is installed at the place where
sun-rays are falling directly or the place nearby heat source.
• The actual product can be different from above contents depending upon model type.
• When using simultaneous operation system, whenever press remote controller button, system will approximately operate
after 1~2 minutes.
• Each function will be shown on the display panel for three seconds or so when the power is applied at first.
h Some functions may not be operated and displayed depending
on the product type.
TEMP
FAN
SPEED
OPER
MODE
2
3
4
5
1
1. Operation Display Panel
2. Temperature Control Button
3. Fan Speed Button
4. On/Off Button
5. Operation Mode select Button

Indoor unit
Compact
9. Installation
Ceiling concealed duct - Middle static pressure _ 13
Indoor Units
Name
Quantity
Shape for gas pipe
for liquid pipe
Clamp metal
1 EA
Insulation for
fitting
1 set 1 set
Drain hose
1 EA
(Other)
Clamp
6 EA
Screws for
duct flanges
• Owner's manual
• Installation manual
• Washers(8 pcs.)
9.1 Accessories
Check whether the following accessories are included with your unit.
1) Standard accessories
• Please read the instruction sheets completely before installing the product.
• When the power cord is damaged, replacement work shall be performed by authorized personnel only.
• Installation work must be performed in accordance with the national wiring standards by authorized personnel only.
Air filters
(Optional)
Air outlet vents
Air intake vents
Remote controller
Remote controller
Air Supply
Air return
Air filter
Can be installed
inside return grill.

Indoor Units
9. Installation
Indoor unit
Compact
14 _ Ceiling concealed duct - Middle static pressure
9.2 Selection of the best location
Install the air conditioner in the location that satisfies the fol-
lowing conditions.
• The place shall easily bear a load of the indoor unit.
• The place should have enough area for inspection as
shown in figure.
• The place where the unit shall be leveled.
•
The place shall allow easy water drainage.(Suitable dimen-
sion “H” is necessary to get a slope to drain as figure.)
• The place shall easily connect with the outdoor unit.
•
The place where the unit is not affected by an electrical noise.
• The place where air circulation in the room will be good .
•
There should not be any heat source or steam near the unit.
9.3 Ceiling dimension, also hanging
bolt location and service space
1) Select an installation site where the following con-
ditions are fulfilled and also that meets with your
customer's approval.
• If supporting structural members are not strong enough
to take the units weight, the unit could fall out of place
and cause serious injury.
• Where sufficient clearance of maintenance and service
can be ensured.
• Where optimum air distribution can be ensured.
• Where nothing blocks the air passage.
• Where condensate can be properly drained.
• Where piping between indoor and outdoor units is pos-
sible within the allowable limit (Refer to the installation
manual of the outdoor unit.)
• Keep the indoor and outdoor units, power cable and
transmission wiring, at least 1 m from TVs and radios,
to prevent distorted pictures and static.(Depending on
the type and source of the electrical waves, static may
be heard even when more than 1 m away.)
2) Relative positions of indoor unit, suspension bolt
and inspection hatch size
[BH Chassis]
H= 20 or more
If the service panel is at the top of the unit, then provide
sufficient service clearance as per convenience.
NOTE
[Unit : mm]
[Unit : mm]
Inspection
hatch 600 x 600
932
120
355