LG ARNU423NKA4.AMBBLUS, ARNU363NJA4.AMBBLUS, ARNU303NJA4.AMBBLUS, ARNU123NJA4.AMBBLUS, ARNU243NJA4.AMBBLUS, ARNU543NKA4.AMBBLUS, ARNU183NJA4.AMBBLUS, ARNU483NKA4.AMBBLUS Installation guide

LG ARNU423NKA4.AMBBLUS, ARNU363NJA4.AMBBLUS, ARNU303NJA4.AMBBLUS, ARNU123NJA4.AMBBLUS, ARNU243NJA4.AMBBLUS, ARNU543NKA4.AMBBLUS, ARNU183NJA4.AMBBLUS, ARNU483NKA4.AMBBLUS Installation guide
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 1
ENGLISH
FRANÇAIS
ESPAÑOL
INSTALLATION MANUAL
AIR
CONDITIONER
Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it
thoroughly.
Vertical Air Handling Unit
http://www.lghvac.com
www.lg.com
P/NO : MFL65003108
Copyright © 2014 - 2017 LG Electronics Inc. All Rights Reserved.
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 2
IMPORTANT!
Please read this instruction sheet completely before installing the product.
This air conditioning system meets strict safety and operating standards. As the installer or service person,
it is an important part of your job to install or service the system so it operates safely and efficiently.
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
Installation of all field wiring and components MUST conform with local building codes or, in the absence of local
codes, with the National Electrical Code 70 and the National Building Construction and Safety Code or Canadian
Electrical code and National Building Code of Canada.
• The information contained in the manual is intended for use by a qualified service technician familiar with safety
procedures and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property
damage, personal injury and/or death.
CAUTION: Improper installation, adjustment, alteration, service or maintenance can void the warranty.
The weight of the condensing unit requires caution and proper handling procedures when lifting
or moving to avoid personal injury. Use care to avoid contact with sharp or pointed edges.
Safety Precautions
• Always wear safety eye wear and work gloves when installing equipment.
• Never assume electrical power is disconnected. Check with meter and equipment.
• Keep hands out of fan areas when power is connected to equipment.
• R-410A causes frostbite burns.
• R-410A is toxic when burned.
NOTE TO INSTALLING DEALER: The Owners Instructions and Warranty are to be given to the owner
or prominently displayed near the indoor Furnace/Air Handler Unit.
Special warnings
When wiring:
Electrical shock can cause severe personal injury or death. Only a qualified,
experienced electrician should attempt to wire this system.
• Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.
• The choice of materials and installations must comply with the applicable local/national or international standards.
When transporting:
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and
bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on
the air conditioner can cut your finger.
When installing...
... in a wall: Make sure the wall is strong enough to hold the unit's weight.
It may be necessary to construct a strong wood or metal frame to provide added support.
... in a room: Properly insulate any tubing run inside a room to prevent "sweating" that can cause
dripping and water damage to wall and floors.
... in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid,
level foundation for the outdoor unit. This prevents water damage and abnormal vibration.
... in an area with high winds: Securely anchor the outdoor unit down with bolts and a metal
frame. Provide a suitable air baffle.
... in a snowy area(for Heat Pump Model): Install the outdoor unit on a raised platform that is
higher than drifting snow. Provide snow vents.
When connecting refrigerant tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Check carefully for leaks before starting the test run.
When servicing
• Turn the power OFF at the main power box(mains) before opening the unit to check or repair
electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have
been left inside the unit being serviced.
2 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 3
Vertical Air Handling Unit Installation Manual
Installation Requirements
Features.....................................4
Duct Connection Dimensions ...5
Safety Precautions ...................6
Installation.................................9
Selection of the best location....9
Upflow Installation ..................10
Duct work................................11
Horizontal-left Installation .......12
Preparation of Piping..............13
Connecting Pipes to the Indoor
Unit .........................................13
Plumbing materials and storage
methods..................................15
Insulation ................................17
Condensate Drain...................18
Wiring Connection ..................20
Electric Heater........................23
Dip Switch Setting ..................24
Group Control Setting.............25
Model Designation .................29
Airborne Noise Emission ........29
Limiting concentration.............29
Product Data ...........................30
External Static Pressure & Air
Flow........................................30
Minimum airflow by heater
capacity ..................................31
Electric Heater Static pressure
drop factors.............................31
Air Filter (Field supply) Static
pressure drop factors..............32
Required Parts
o Four type "A" screws
o Pipes: Gas side
Liquid side (Refer to
Product Data)
o Insulation materials
o Additional drain pipe
Required Tools
o Level gauge
o Screw driver
o Electric drill
o Hole core drill
o Hexagonal wrench
o Gas-leak detector
o Vacuum pump
o Gauge manifold
o Owner's manual
o Thermometer
o Electric Heater installation
manual
Installation Manual 3
ENGLISH
TABLE OF CONTENTS
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 4
Feature
Features
Wiring knockouts
for conduit
Wiring knockouts
for conduit
Refrigerant
connections
Drain connections
for horizontal
application
Filter access
4 Vertical Air Handling Unit
Drain connections for
upflow application
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 5
Feature
ENGLISH
Duct Connection Dimensions
<Top>
Refrigerant
connections
Drain
connections
for upflow
application
Drain connections
for horizontal
application
Air filter cover
<Front>
<Side-right>
<Bottom>
(Unit: inch(mm))
Wiring
Knock out
Dimensions
Capacity
(kBtu/h (RT))
12(1.0)
18(1.5)
24(2.0)
30(2.5)
36(3.0)
42(3.5)
48(4.0)
54(4.5)
A
B
C
I
D
E
F
G
J
H
Power
Refrigerant
Connections
Pipe size
Commu
Liquid
nication
Height Width
Depth
Gas
48-5/8
(1236)
18
(457)
21-3/8 1-9/16 17-1/2
(540)
(40)
(445)
20
(530)
17
(432)
12-1/8 1-11/16
(308)
(43)
7/8
(22)
1/4
(6.35)
48-5/8
(1236)
18
(457)
21-3/8 1-9/16 17-1/2
(540)
(40)
(445)
20
(530)
17
(432)
12-1/8 1-11/16
(308)
(43)
7/8
(22)
3/8
5/8
(9.52) (15.88)
55-1/8
(1401)
25
(635)
21-3/8 1-9/16 24-1/2
(540)
(40)
(623)
20
(530)
24
(610)
12-1/8 1-11/16
(308)
(43)
7/8
(22)
3/8
5/8
(9.52) (15.88)
1/2
(12.7)
Installation Manual 5
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 6
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be
followed.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.
WARNING
This symbol indicates the possibility of death or serious injury.
CAUTION
This symbol indicates the possibility of injury or damage to properties only.
n Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
n Installation
Do not use a defective or
underrated circuit breaker. Use
this appliance on a dedicated
circuit.
• There is risk of fire or electric
shock.
Install the panel and the cover
of control box securely.
For electrical work, contact the
dealer, seller, a qualified electrician, or an Authorized Service
Center.
• Do not disassemble or repair the
product. There is risk of fire or
electric shock.
Always install a dedicated circuit and breaker.
Always ground the product.
• There is risk of fire or electric
shock.
Use the correctly rated breaker
or fuse.
• There is risk of fire or electric
shock.
• Improper wiring or installation
may cause fire or electric shock.
• There is risk of fire or electric
shock.
Do not modify or extend the
power cable.
Do not install, remove, or reinstall the unit by yourself (customer).
Be cautious when unpacking
and installing the product.
• There is risk of fire, electric shock,
explosion, or injury.
• Sharp edges could cause injury.
Be especially careful of the case
edges and the fins on the condenser and evaporator.
Do not install the product on a
defective installation stand.
Be sure the installation area
does not deteriorate with age.
• There is risk of fire or electric
shock.
For installation, always contact
the dealer or an Authorized
Service Center.
• There is risk of fire, electric shock,
explosion, or injury.
6 Vertical Air Handling Unit
• It may cause injury, accident, or
damage to the product.
• If the base collapses, the air conditioner could fall with it, causing
property damage, product failure,
and personal injury.
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 7
Safety Precautions
• Otherwise, it may cause fire, electric shock, explosion or death.
Use a vacuum pump or Inert (nitrogen) gas when
doing leakage test or air purge. Do not compress
air or Oxygen and Do not use Flammable gases.
Otherwise, it may cause fire or explosion.
• There is the risk of death, injury, fire or explosion.
n Operation
Do not let the air conditioner
run for a long time when the
humidity is very high and a
door or a window is left open.
• Moisture may condense and wet
or damage furniture.
Do not plug or unplug the
power supply plug during operation.
• There is risk of fire or electric
shock.
Do not allow water to run into
electric parts.
• It may cause There is risk of fire,
failure of the product, or electric
shock.
When flammable gas leaks,
turn off the gas and open a window for ventilation before turn
the product on.
• Do not use the telephone or turn
switches on or off.
There is risk of explosion or fire.
Do not open the inlet grill of the
product during operation.
(Do not touch the electrostatic
filter, if the unit is so equipped.)
• There is risk of physical injury,
electric shock, or product failure.
Take care to ensure that power
cable could not be pulled out or
damaged during operation.
• There is risk of fire or electric
shock.
Do not touch(operate) the product with wet hands.
• There is risk of fire or electrical
shock.
Do not store or use flammable
gas or combustibles near the
product.
• There is risk of fire or failure of
product.
If strange sounds, or small or
smoke comes from product.
Turn the breaker off or disconnect the power supply cable.
• There is risk of electric shock or
fire.
When the product is soaked
(flooded or submerged), contact an Authorized Service
Center.
• There is risk of fire or electric
shock.
Ventilate the product from time to time when
operating it together with a stove, etc.
• There is risk of fire or electric shock.
When the product is not be used for a long time,
disconnect the power supply plug or turn off the
breaker.
• There is risk of product damage or failure, or unintended operation.
Do not place anything on the
power cable.
• There is risk of fire or electric
shock.
Do not place a heater or other
appliances near the power
cable.
• There is risk of fire and electric
shock.
Do not use the product in a
tightly closed space for a long
time.
• Oxygen deficiency could occur.
Stop operation and close the
window in storm or hurricane.
If possible, remove the product
from the window before the
hurricane arrives.
• There is risk of property damage,
failure of product, or electric
shock.
Be cautious that water could
not enter the product.
• There is risk of fire, electric shock,
or product damage.
Turn the main power off when cleaning or maintaining the product.
• There is risk of electric shock.
Take care to ensure that nobody could step on or
fall onto the outdoor unit.
• This could result in personal injury and product damage.
Installation Manual 7
ENGLISH
Do not turn on the breaker or power under condition that front panel, cabinet, top cover, control
box cover are removed or opened.
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 8
Safety Precautions
CAUTION
n Installation
Always check for gas (refrigerant) leakage
after installation or repair of product.
• Low refrigerant levels may
cause failure of product.
Do not install the product where the noise
or hot air from the outdoor unit could
damage the neighborhoods.
• It may cause a problem for your
neighbors.
Install the drain hose to ensure that
water is drained away properly.
• A bad connection may cause
water leakage.
Use two or more people to lift and
transport the product.
• Avoid personal injury.
Keep level even when installing
the product.
• To avoid vibration or water leakage.
Do not install the product where
it will be exposed to sea wind
(salt spray) directly.
• It may cause corrosion on the product.
Corrosion, particularly on the condenser
and evaporator fins, could cause product
malfunction or inefficient operation.
n Operation
Do not expose the skin directly
to cool air for long periods of
time. (Don't sit in the draft.)
Do not use the product for special purposes, such as preserving foods,
works of art, etc. It is a consumer air
conditioner, not a precision refrigeration system.
• This could harm to your health.
• There is risk of damage or loss of property.
Use a soft cloth to clean. Do
not use harsh detergents, solvents, etc.
Do not touch the metal parts of the
product when removing the air filter. They are very sharp!
• There is risk of fire, electric
shock, or damage to the plastic
parts of the product.
Always insert the filter securely.
Clean the filter every two weeks
or more often if necessary.
• A dirty filter reduces the efficiency of
the air conditioner and could cause
product malfunction or damage.
Use a firm stool or ladder when
cleaning or maintaining the
product.
• Be careful and avoid personal injury.
• There is risk of personal injury.
Do not insert hands or other objects
through the air inlet or outlet while the
product is operated.
• There are sharp and moving parts
that could cause personal injury.
Replace the all batteries in the remote
control with new ones of the same
type. Do not mix old and new batteries
or different types of batteries.
• There is risk of fire or explosion.
If the liquid from the batteries gets onto your skin
or clothes, wash it well with clean water. Do not
use the remote if the batteries have leaked.
• The chemicals in batteries could cause burns or
other health hazards.
8 Vertical Air Handling Unit
Do not block the inlet or outlet
of air flow.
• It may cause product failure.
Do not step on or put anyting
on the product. (outdoor units)
• There is risk of personal injury
and failure of product.
Do not drink the water drained
from the product.
• It is not sanitary and could cause
serious health issues.
Do not recharge or disassemble the batteries.
Do not dispose of batteries in a
fire.
• They may burn or explode.
If you eat the liquid from the batteries, brush your
teeth and see doctor. Do not use the remote if the
batteries have leaked.
• The chemicals in batteries could cause burns or
other health hazards.
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 9
Installation
ENGLISH
Installation
Selection of the best location
• Where optimum air distribution can be ensured.
• Where nothing blocks air passage and install the duct work.
• Where condensate can be properly drained.
• Where the ceiling is strong enough to bear the indoor unit weight.
• Where the false ceiling is not noticeably on an incline.
• Where sufficient clearance for maintenance and service can be ensured.
• Where piping between indoor and outdoor units is possible within the allowable limit. Refer to the
installation manual for the outdoor unit.
• Vertical Air Handling Unit can be installed for upflow and horizontal-left positions.
More than
350(13-25/32)
More than
600(23-5/8)
clearance from
access panels
for Service
More than
350(11-25/32)
More than
250(9-27/32)
More than
250(9-27/32)
Unit: mm (inch)
NOTE : The primary and secondary drain line must be trapped to allow proper drainage of condensate
water, If the secondary drain line is not used, it must be capped.
In the case of sea coast installation, salt residue may cause corrosion of cabinet and component
parts. Please take appropriate anti-corrosion measures.
Installation Manual 9
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 10
Installation
Upflow Installation
• Position unit for plenum installation.
• The plenum should be secured in order to support the installation of adapter callers accommodate the
installation of any duct work.
• Seal all duct work according to local codes to prevent air leakage. Ensure that filter access is unobstructed.
• The air handler support platform should be sturdy enough to support the cabinet plus any accessory
components including filter box.
• The minimum height clearance is 14inches(350mm) to maintain proper air flow.
• Vibration isolators (purchased locally) must be placed between the unit and the pedestal.
• An illustration showing an example of where a vibration isolator should be added would clarify what
the installing contractor should do to properly position the isolator.
Field Supplied
Supply Duct
Field
Supplied Return
Plenum
More than
1inch (25mm)
More than 6 screws (M4*25L)
Do not connect the screws on Front and Rear side, it may cause the filter can not be mounted.
10 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 11
Installation
• Over 10 screws should be used for joining supply duct with the unit.
• To prevent vibration transmission, exploit flexible connectors between duct and the unit. It is mandatory that the flexible connector between unit and duct at discharge connection should be made off heat
resistive material when electric heater is installed.
• Duct work must be insulated and covered with vapor barrier when routed through unconditioned
space.
• Internal acoustical insulation lining may necessary for the metal duct system if it do not have 90°
elbow and 10ft. of main duct to first branch takeoff.
• It is advised that a fibrous duct work could be used as a substitute if built and installed in accordance
with the most recent edition of SMACNA construction standard on fibrous glass ducts.
• Collectively fibrous duct work and acoustical lining shall obey National Fire Protection Association
standards 90A or B as tested by UL standard 181 for class 1 air ducts.
• Seal around the delivery duct subsequent to when the duct is secured so that to facilitate prevention
of air leakage.
More than 10 screws
(M4*25L)
Installation Manual 11
ENGLISH
Duct work
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 12
Installation
Horizontal-left Installation
• It is particular that the units should not be installed in such a manner that the access panels facing up
or down
• It should be confirmed that the installation is in accordance with all relevant building codes that may
necessitate installation of external condensate pan.
-Set up a support for unit by locating it in or above external condensate pan.
• Angle steel support brackets with threaded rods which supporting the units from the underside should
be used as shown in the figure below if the units are suspended.
• If not suspended then also it should be supported as same as mentioned above and also carefully
isolated to avoid sound transmission. The size of the support should comparatively bigger than the
unit and the unit must be place at centre of the support.
• Locally available vibration isolators must be placed between the unit and the support.
• The same installation method of up flow type has to be used in the case of Return Plenum and supply duct.
Field Supplied
Supply Duct
More than 1-1/2
inch(38 mm) X 1-1/2
inch(38 mm) angle
Recommended
length more than 26
inch(660 mm) with
2 inch(50 mm)
clearance on both
sides of unit
More than 3/8 inch
(9.5mm) threaded rod
Field Supplied
Return Plenum
A
B
C
Suspension support locations
(Unit : inch(mm))
Caapcity
(kBtu(RT))
Dimension
A
B
C
12(1.0)
18(1.5)
24(2.0)
30(2.5)
36(3.0)
4(100)
23(580)
41-1/2
(1050)
42(3.5)
48(4.0)
54(4.5)
4(100)
29(730)
48(1220)
To ensure proper drainage for horizontal installations, unit must be installed so it is within 1/8” level of
the length and width of unit.
12 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 13
Installation
ENGLISH
Preparation of Piping
Cut the pipes
1. Use the pipes purchased locally.
2. Measure the distance between the indoor and the outdoor unit.
3. Cut the pipes a little longer than measured distance.
Copper
pipe
90°
Slanted Uneven Rough
Burrs removal
1. Completely remove all burrs from the cut cross section of pipe/tube.
2. While removing burrs put the end of the copper tube/pipe in a downward direction while removing
burrs location is also changed in order to avoid dropping burrs into the tubing.
Pipe
Reamer
Point down
Connecting Pipes to the Indoor Unit
Cut the e
Upper front panel
Top screw
Liquid pipe
Lower front
panel
Gas pip
Air filter cover
Bottom screw
Refrigerant
pipe cover
1. First detach the upper front panel followed by air
filter cover from the body.
Liquid pipe
Cutting the Pipe for
3/8inch (9.52mm).
Cutting Position is less
than 0.4inch (10mm).
Brazing for
1/4inch(6.35mm)
Gas pipe
2. Detach the lower front panel and refrigerant pipe
cover from the body.
Note: While detaching the lower front panel,
remember to remove the top and bottom screws.
Installation Manual 13
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 14
Installation
Cut the edge
Liquid pipe
Cutting the Pipe for
3/8inch (9.52mm).
Cutting Position is less
than 0.4inch (10mm).
Liquid pipe
Brazing for
Gas pipe
1/4inch(6.35mm)
Cut the edgeCut the edge
Gas pipe
Brazing
Liquid pipe Liquid pipe
Gas pipe
3. Cut the refrigerant pipe (Liquid Pipe edge)
and make sure the factory charged refrigerant is emerging out. (This confirms there is
no leakage.)
Cap
Gas pipe
4. Detach Liquid and Gas Pipe
- Gas Pipe: Remove the Cap by Brazing
- Liquid Pipe: There are 2 kinds of Liquid Pipe.
Liquid Pipe
1/4 (6.35)
3/8 (9.52)
Detach Pipe
Brazing
Cutting
- If you do not use proper cutter size
when cutting liquid pipe, it would make
damage to the gas pipe.
the Pipe for
(9.52mm).
Position is less
ess
4inch (10mm).
m).
Upper
front
panel
Lower
front
panel
g for
h(6.35mm)
Refrigerant
pipe cover
Cap
5. Connect the field piping by brazing.
- Wrap the gas and liquid pipe with wet towel.
(If not wrapped with a wet towel, there may
be damages drain pan or pipe insulations.)
6. Attach the two panels to the body.
Completely remove the refrigerant and then do brazing. Otherwise, high pressure is a risk
of injury due to explosions
Note: Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Bind
them together with vinyl tape so that there may be no gap.
14 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 15
Installation
6
1
4
2
5
3
1
2
3
Refrigerant piping
Pipe to be brazed
Nitrogen
4
5
6
Taping
Valve
Pressure-reducing valve
Note : The torch tip should be positioned at the opposite angle to shop the
correct way to apply heat on the pipe coupling.
Plumbing materials and storage methods
Pipe must be able to obtain the specified thickness and should be used with low
impurities.
Also when handling storage, pipe must be careful to prevent a fracture, deformity
and wound.
Should not be mixed with contaminations such as dust, moisture.
Refrigerant piping on three principles
Drying
Should be no moisture
inside
Items
Moisture
Cleanliness
No dust inside.
Dust
Airtight
There is no refrigerant
leakage
Leakage
- Significant hydrolysis of refrigerant oil
- Degradation of refrigerant oil
Cause failure - Poor insulation of the compressor
- Do not cold and warm
- Clogging of EEV, Capillary
- Degradation of refrigerant oil
- Poor insulation of the compressor
- Do not cold and warm
- Clogging of EEV, Capillary
- Gas shortages
- Degradation of refrigerant oil
- Poor insulation of the compressor
- Do not cold and warm
- No moisture in the pipe
- Until the connection is completed, the
plumbing pipe entrance should be
strictly controlled.
- Stop plumbing at rainy day.
Countermeas
- Pipe entrance should be taken side or
ure
bottom.
- When removal burr after cutting pipe,
pipe entrance should be taken down.
- Pipe entrance should be fitted cap
when pass through the walls.
- No dust in the pipe.
- Until the connection is completed, the
plumbing pipe entrance should be
strictly controlled.
- Pipe entrance should be taken side or
bottom.
- When removal burr after cutting pipe,
pipe entrance should be taken down.
- Pipe entrance should be fitted cap
when pass through the walls.
- Airtightness test should be.
- Brazing operations to comply with standards.
- Flare to comply with standards.
- Flange connections to comply with
standards.
Installation Manual 15
ENGLISH
Always blow nitrogen into pipe which is brazed. Always use a non-oxidizing brazing material for brazing the parts and do not use flux. If not, oxidized film can cause clogging or damage to the compressor unit and flux can harm the copper piping or refrigerant oil.
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 16
Installation
Nitrogen substitution method
Welding, as when heating without nitrogen substitution a large amount of the oxide film is formed on the internal piping.
The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of oil pump in compressor.
It prevents normal operation of the compressor.
In order to avoid this problem, Welding should be done after replacing air by nitrogen gas.
When welding plumbing pipe, the work is required.
◆How to work
Regulator
Oxide scale
Note) should not block the outlet side.
When the internal pressure in pipe is above the
atmospheric pressure, pinhole is occurred and it
is a leakage cause.
Nitrogen gas
Pressure 0.02MPa less
Taping
(Should not
contain air)
Auxiliary valve
Nitrogen
Welding Point
1. Always use the nitrogen.(not use oxygen, carbon dioxide, and a Chevron gas):
Please use the following nitrogen pressure 0.02MPa
Oxygen --------- Promotes oxidative degradation of refrigerant oil.
Because it is flammable, it is strictly prohibited to use
Carbon dioxide --- Degrade the drying characteristics of gas
Chevron Gas ---- Toxic gas occurs when exposed to direct flame.
2. Always use a pressure reducing valve.
3. Please do not use commercially available antioxidant.
The residual material seems to be the oxide scale is observed.
In fact, due to the organic acids generated by oxidation of the alcohol contained in the anti-oxidants, ants nest corrosion
occurs. (causes of organic acid → alcohol + copper + water + temperature)
16 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 17
Installation
ENGLISH
Insulation
Insulate the joint and tubes completely.
Thermal insullaton : All thermal insulation must comply with local requirement.
Union for liquid pipe
Refrigerant pipe
and thermal
insulator
(Local supply)
Hose crip for thermal insulator
(Local supply)
Thermal insulator for
refrigerant pipe(Local supply)
Union for gas pipe
Thermal insulator for refrigerant pipe
(Field supply) Thermal insulator for
Piping (Field supply)
Overlap with thermal
insulator for piping.
Hose crip for thermal insulator (Field supply)
Make sure that there is no clearance here.
Recommend
Classification
Liquid Pipe
Gas Pipe
Air conditioned location
Note2)
General
Special
location
location
Note1)
Non-air conditioned location
Note4)
General
Negative
location
condition
Note3)
Ø1/4(6.35)
Ø3/8(9.52)
Above t 3/8
(9.52)
Above t 3/8
(9.52)
Above t 3/8
(9.52)
Above t 3/8
(9.52)
Above Ø1/2
(12.7)
Above t 1/2
(12.7)
Above t 1/2
(12.7)
Above t 1/2
(12.7)
Above t 1/2
(12.7)
Above t 3/4
(19.05)
Above t 3/4
(19.05)
Ø3/8(9.52)
Ø1/2 (12.7)
Ø5/8(15.88)
Ø3/4(19.05)
Ø7/8(22.22)
Ø1(25.4)
Ø1-1/8(28.58)
Ø1-1/4(31.75)
Ø1-3/8(34.9)
Ø1-1/2(38.1)
Ø44.45(1-3/4)
Above t 1/2
(12.7)
Above t 1 (25)
Above t 3/4
(19.05)
Above t 1 (25)
Above t 1 (25)
Installation Manual 17
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 18
Installation
* Note 1) General location: When the pipe passes through indoors in which the indoor unit is operated
- Apartment, classroom, office, mall, hospital, office-tel etc.
Note 2) Special location
1. When the location is air conditioned but has severe temperature/humidity difference due to
high ceiling
- Church, auditorium, theater, lobby etc.
2. When the location is air conditioned but the internal temperature/humidity of the ceiling finishing is high
- Bathroom/swimming pool locker room etc. (Building with roof ceiling of sandwich assembly
type)
Note 3) General location: When the pipe passes indoors where the indoor unit is not operated
- Hall way etc. (Dormitory, school, office-tel)
Note 4) Negative condition: When below conditions 1 and 2 are met.
1. When the pipe passes indoors where the indoor unit is not operated
2. When the humidity is high, regionally, and there is no air flow in the pipe passing area
- When installing the outside unit within the outside pipe tray or at a location where it is ok to
have freezes, apply 13t.
- If you are not sure with the selection of heat insulation material, coordinate with the supervision or HQ.
- The thickness of the above heat insulation material is based on the heat conductivity of
0.088W/m°C.
Condensate Drain
• The drainage performance has to be optimized by installing both primary and secondary drain lines
along with properly sized condensate traps in order to prevent property damage.
• Care should be taken to avoid the blocking of filter access panel while connecting condensate drain
lines. The primary and secondary condensate traps has to be primed after connecting to the drain
pan.
• A field supplied external condensate pan has to be installed underneath the entire unit if the unit is
above the living space . Other wise damage may result due to condensate over flow. Also a additional
external condensate line should run from unit in to the pan.
• The entire condensate should be drained from the external condensate pan to some noticeable
area. It is advised to install traps in condensate lines as near to the coil as possible. The outlet of
each trap should be below its connection to the condensate pan avert condensate from overflowing
drain pan.
• If located above the living area then all traps should be prime and insulated and also tested for leakage.
• PVC 3/4 inch(19.05mm) male pipe thread fitting is advised to use at condensate pan with gentle tight.
• For easy drain flow the drain hose has to be pointed downward.
• Care should be taken to not use pipe joint connection or PVC/CPVC for units drain line connection.
Use only Teflon tape.
• For preventing winter freeze up on condensate line special means should be provided for drainage.
18 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 19
Installation
GRADIENT OF UNIT AND DRAIN PIPING
• 5/24 inch(5mm) or thicker formed thermal insulator shall always be provided for the drain pipe.
Thermal insulator
(Field supply)
Drainage pipe
(Field supply)
Unit
Make sure to be closed.
Drainage hole
Applied U-Trap Dimension
A ≥ 2-9/16 inch
(70mm)
B ≥ 2C
C ≥ 2 x SP
SP = External Pressure
C
(in.wc)
Ex) External Pressure
= 0.4in.wc(10mmAq) A
A ≥ 2-9/16 inch(70mm)
B ≥ 1-7/12 inch(40mm)
C ≥ 19/24 inch(20mm)
3/4 inch(19.05mm)
connector
B
U-Trap
CORRECT
• Install the U-Trap to prevent
a water leakage caused by the blocking
of intake air filter.
INCORRECT
Upflow Drain
Horizontal-left Drain
Horizontal-left
Drain Knockout
Air filter cover
Supplementary drain
with proper trap. (field
supplied kit can be used)
Main drain along with suitable trap.
( Field supplied trap with sufficient
depth can be used. P-traps of standard
size are not sufficient. Refer the figure
for recommended condensate trap.)
The supplied flexible drain hose should not be strained.
A strained hose may cause leakage of water.
Installation Manual 19
ENGLISH
• Alway lay the drain with downward inclination(1/50 to 1/100).
Prevent any upward flow or reverse flow in any part.
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 20
Installation
Wiring Connection
Connect the wires to the terminals on the control board individually according to the outdoor unit
connection.
Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of
indoor unit respectively.
NJ Chassis
Terminal Block
Indoor
L(L1) N(L2)
Terminal block of outdoor unit
Terminal Block Indoor
YL RD BK
A
SODU
B
B
POWER
INPUT
WIRED REMOTE
CONTROLLER
IDU
A
B
INTERNET DRY1 DRY2 GND 12V
A
B
A
-
-
-
-
COMMUNICATION LINE(IDU-ODU)
NK Chassis
Terminal Block Indoor
L(L1) N(L2)
Terminal block of outdoor unit
Terminal Block Indoor
YL RD BK
A
B
SODU
B
POWER
INPUT
WIRED REMOTE
CONTROLLER
A
INTERNET DRY1 DRY2 GND 12V
IDU
B
A
B
A
-
-
-
-
COMMUNICATION LINE(IDU-ODU)
Unit : inch(mm)
Min wire size
(AWG)
Size of conduit
(inch(mm))
Knockout diameter
(inch(mm))
Power cable
22
1/2 (21.3)
7/8 (22.2)
Communication cable
22
1/2 (21.3)
7/8 (22.2)
* Copper wire should be used.
Upper
Front Panel
Control
Box Cover
Wiring
knockouts
1. Detach the upper panel & control box cover.
And remove two wiring Knockouts.
20 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 21
Installation
ENGLISH
Lock nut
Conduit
mounting plate
1/2inch(21.3 mm)
Conduit
power cable
communication cable
2. Install conduit to the wiring knockouts.
Connect power/communication cable to terminal block through the wiring knockouts.
NOTE :
1. Separately wire power supply cord and connecting cable.
2. Use heat-proof electrical wiring capable of withstanding temperature up to 75°C(167°F).
3. Use outdoor and waterproof connection cable NRTL(UL, ETL, CSA...) listed and rated more than
300V for the connection between indoor and outdoor unit. and this cable should be enclosed in
conduit.
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have individual power specialized for the air conditioner. As for the method
of wiring, follow by the circuit diagram posted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screws which fasten the wiring in the casing of electrical fittings are liable to come
loose from vibrations to which the unit is subjected during the course of transportation.
Check them and make sure that they are all tightly fastened. (If they are loose, it could
give rise to burn-out of the wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is within 10% plus or minus of nameplate voltage rating.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip GFCI breaker when installing the air handler near wet or moist locations.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point, fuse breaking, disturbance by the
normal function of an overload protection device.
• Proper starting power is not given to the compressor.
HAND OVER
Teach the customer the operation and maintenance procedures, using the operation manual.
(air filter cleaning, temperature control, etc.)
NOTE : Openings where field wiring enters the cabinet must be completely sealed.
Installation Manual 21
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 22
Installation
CAUTION :
The connecting cable connected to the indoor and outdoor unit should be complied with the following specifications (This equipment shall be provided with a cord set complying with the national regulation).
GN
/YL
(25 20m
/32 m
inc
h)
If the supply cord is damaged, it must be replaced by a special cord or assembly available from
the manufacturer of its service agent.
u Precautions when laying power and ground wiring
Use round pressure terminals for connections to the power terminal block.
When laying ground wiring, you must use round pressure terminals.
Round pressure terminal
Power wire(Ground wire)
When none are available, follow the instructions below.
• Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power wiring
may cause abnormal heat.)
• When connecting wiring which is the same thickness, do as shown in the figure below.
• For wiring, use the designated power wire and connect firmly, then secure to prevent outside pressure
being exerted on the terminal block.
• Use an appropriate screwdriver for tightening the terinal screws. A screwdriver with a small head will
strip the head and make proper tighterning impossible.
• Over-tightening the terminal screws may break them.
22 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 23
Installation
Feature (Example: 5kW)
Bracket
Bi metal
Heater Coil
Terminal Block
Relay
Heater Cable
* Note: Image shown above may vary depends on model capacity.
Available heater in model
Capacity
(kBtu/h (RT))
12(1.0)
18(1.5)
24(2.0)
30(2.5)
36(3.0)
42(3.5)
48(4.0)
54(4.5)
5
○
○
○
○
○
○
○
○
Heater Capacity (kW)
10
15
Not available Not available
Not available Not available
Not available
○
Not available
○
Not available
○
○
○
○
○
○
○
20
Not available
Not available
Not available
Not available
Not available
○
○
○
※ If you want to know more optional operation, please refer to the Electric Heater Manual.
※ Heater Model
5kW: ANEH053B1
10kW: ANEH103B2
15kW: ANEH153B2
20kW: ANEH203B2
Installation Manual 23
ENGLISH
Electric Heater
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 24
Installation
Dip Switch Setting
1. Indoor Unit
SW1
SW2
Function
Description
Communication N/A (Default)
Cycle
N/A (Default)
SW3
Group Control
Selection of Master or
Slave
SW4
Dry Contact
Mode
Selection of Dry
Contact Mode
SW5
Installation
SW6
Fan continuous
operation
Heater linkage N/A
Ventilator linkage
SW7
SW8
Selection of Ventilator
linkage
Vane selection Selection of up/down
(Console)
side Vane
Region selection
Etc.
Selection tropical
region
Spare
Setting Off
Master
Wired/Wireless remote
controller
selection of Manual or Auto
operation Mode
Continuous operation
Removal
-
Setting On Default
Off
Off
Slave
Off
Auto
Off
-
Off
-
Off
Linkage Removal
Working
Up side + Down side Vane
Up side Vane
Only
General model
-
Tropical
model
-
Off
Off
CAUTION
For Multi V Models, DIP switch 1, 2, 6, 8 must be set OFF.
2. Outdoor Unit
In case that the products meet specific conditions, “Auto addressing” function can start automatically
with the improved speed by turning the DIP switch #3 of the outdoor unit and resetting the power.
※ Specific conditions:
- All names of the indoor units are ARNU****4.
- The serial number of Multi V super IV (outdoor units) is after October 2013.
DIP switch
7 segment
Outdoor Unit PCB
24 Vertical Air Handling Unit
Outdoor Unit DIP Switch
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 25
Installation
ENGLISH
Group Control Setting
1. Group Control 1
n Wired remote controller 1 + Standard Indoor Units
LGAP Network System
or
Master
Slave
Display Error Message
Slave
Slave
GND
Signal
12 V
Only connect serial signal and GND lines
between indoor units.
Master
n DIP Switch in PCB
¿ Master Setting
- No. 3 Off
¡ Slave Setting
- No. 3 On
Indoor Unit DIP Switch
Some products have no DIP switch on PCB. It is possible to set indoor units to Master or Slave by
using the wireless remote controller instead of DIP switch.
For the details of the setting, please refer to the manual of the wireless remote controller.
1. It is possible to 16 indoor units(Max.) by one wired remote controller.
Set only one indoor unit to Master, set the others to Slave.
2. It is possible to connect with every type of indoor units.
3. It is possible to use wireless remote controller at the same time.
4. It is possible to connect with Dry Contact and Central controller at the same time.
- The Master indoor unit is possible to recognize Dry Contact and Central Controller only.
5. In case that any error occurs at indoor unit, the error code is displayed on the wired remote
controller.
It is possible to control the other indoor units except the error units.
Installation Manual 25
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 26
Installation
h It is possible to connect indoor units since Feb. 2009.
h It can be the cause of malfuctions when there is no setting of master and slave.
h In case of Group Control, it is possible to use following functions.
- Selection of operation, stop or mode
- Temperature setting and room temperature check
- Current time change
- Control of flow rate (High/Middle/Low)
- Reservation settings
It is not possible to use some functions.
2. Group Control 2
n Wired remote controllers + Standard Indoor Units
LGAP Network System
or
Master
Master
Slave
Slave
Donʼt connect serial 12V line
Display Error Message
Master
Slave
h It is possible to control 16 indoor units(Max.) with the master wired remote control.
h Other than those, it is same with the Group Control 1.
26 Vertical Air Handling Unit
GND
Signal
12 V
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 27
Installation
3. Group Control 3
ENGLISH
n Mixture connection with indoor units and Fresh Air Intake Unit
LGAP Network System
or
FAU
Master
Master
Master
FAU
Slave
Slave
N
GND
Signal
12 V
M
Display Error Message
Display Error Message
Master
Master
h In case of connecting with standard indoor unit and Fresh Air Intake Unit, separate Fresh Air Intake Unit with standard units. (N, M ≤ 16) (Because setting temperature are different.)
h Other than those, it is same with Group Control 1.
FAU
FAU
Standard
Standard
FAU
FAU
Standard
Standard
* FAU : Fresh Air Intake Unit
Standard: Standard Indoor Unit
Installation Manual 27
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 28
Installation
4. 2 Remote Control
n Wired remote controller 2 + Indoor unit 1
LGAP Network System
or
Slave
Master
Slave
Slave
GND
Signal
12 V
Display Error Message
Master
Slave
1. It is possible to connect two wired remote controllers (Max.) with one indoor unit.
Set only one indoor unit to Master, set the others to Slave.
Set only one wired remote controller to Master, set the others to Slave.
2. Every types of indoor unit is possible to connect two remote controller.
3. It is possible to use wireless remote controller at the same time.
4. It is possible to connect with Dry Contact and Central controller at the same time.
5. In case that any error occurs at indoor unit, the error code is displayed on the wired remote controller.
6. There isnʼt limits of indoor unit function.
5. Accessories for group control setting
It is possible to set group control by using below accessories.
Indoor unit 2 EA +Wired remote controller
h PZCWRCG3 cable used for connection
Indoor unit 1 EA +Wired remote controller 2EA
h PZCWRC2 cable used for connection
S lave
Mas te r
PZC WRC 2
PZC WRC G3
Maste r
Maste r
S lave
CAUTION
• Apply totally enclosed noncombustible conduit in case of local building code Requiring plenum cable usage.
28 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 29
Installation
ARN
U
36
3
NJ
A
4
Serial Number
Combinations of functions
A:Basic function
L: Neo Plasma(Wall Mounted)
C: Plasma(Ceiling Cassette)
G: Low Static
K: High Sensible Heat
U: Floor Standing without Case
SE/S8 - R: Mirror V: Silver B:Blue(ART COOL Type Panel Clolr)
SF
- E: Red V: Silver G:Gold 1: Kiss (Photo changeable)
Q: Console
Z: Fresh Air Intake Unit
Chassis Name
Electrical Ratings
1:1Ø, 115V, 60Hz
6:1Ø, 220 - 240V, 50Hz
3:1Ø, 208/230V, 60Hz
2:1Ø, 220V, 60Hz
7:1Ø, 100V, 50/60Hz
G:1Ø, 220 - 240V, 50Hz/1Ø, 220V, 60Hz
Total Cooling Capacity in Btu/h
EX) 5,000 Btu/h ➝ '05'
18,000 Btu/h ➝ '18'
Combination of Inverter Type and Cooling Only or Heat Pump
N: AC Inverter and H/P
V: AC Inverter and C/O
U: DC Inverter and H/P and C/O
System with Indoor Unit using R410A
❈ LGETA:U Ex) URN
Airborne Noise Emission
The A-weighted sound pressure emitted by this product is below 70 dB.
** The noise level can vary depending on the site.
The figures quoted are emission level and are not necessarily safe working levels. Whilst there is a correlation between the emission and exposure levels, this cannot be used reliably to determine whether
or not further precautions are required. Factor that influence the actual level of exposure of the workforce include the characteristics of the work room and the other sources of noise, i.e. the number of
equipment and other adjacent processes and the length of time for which an operator exposed to the
noise. Also, the permissible exposure level can vary from country to country. This information, however,
will enable the user of the equipment to make a better evaluation of the hazard and risk.
Limiting concentration
Limiting concentration is the limit of Freon gas concentration where immediate measures can be
taken without hurting human body when refrigerant leaks in the air. The limiting concentration shall
be described in the unit of kg/m3 (Freon gas weight per unit air volume) for facilitating calculation
Limiting concentration: 0.44kg/m3(R410A)
n Calculate refrigerant concentration
Total amount of replenished refrigerant in refrigerant facility (kg)
Refrigerant concentration =
Capacity of smallest room where indoor unit is installed (m3)
Installation Manual 29
ENGLISH
Model Designation
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 30
Product Data
Product Data
External Static Pressure & Air Flow
Capacity
(kBtu/h(RT))
54(4.5)
48(4.0)
42(3.5)
36(3.0)
30(2.5)
24(2.0)
18(1.5)
12(1.0)
Flow rate
(CFM)
High(1475)
Middle(1400)
Low(1260)
High(1400)
Middle(1260)
Low(1000)
High(1250)
Middle(1100)
Low(1000)
High(990)
Middle(880)
Low(800)
High(880)
Middle(800)
Low(630)
High(710)
Middle(640)
Low(480)
High(580)
Middle(530)
Low(480)
High(530)
Middle(480)
Low(380)
0.1
77
74
67
74
67
56
67
61
56
80
65
65
65
62
53
56
53
53
53
53
53
53
53
53
0.2
82
79
75
79
75
65
75
67
65
85
72
69
72
69
65
67
65
55
60
58
55
58
56
54
0.3
87
84
80
84
80
72
80
75
72
90
80
77
80
77
70
74
70
64
68
66
64
66
64
62
Setting Value @ ESP(in.wc)
0.6
0.7
0.4
0.5
102
110
93
98
102
110
91
96
98
102
87
90
91
96
102
110
98
102
87
90
90
98
77
84
98
102
87
90
92
100
80
87
90
98
77
84
103
103
95
100
98
103
85
92
96
101
82
90
98
103
85
92
96
101
82
90
91
96
75
85
94
98
78
87
91
96
75
85
84
92
70
79
85
95
74
84
84
92
72
82
83
92
70
79
72
82
84
92
70
79
83
92
69
77
83
92
0.8
115
115
110
115
110
105
110
108
105
103
103
101
103
101
96
98
96
92
95
92
92
92
92
92
0.9
115
115
115
115
115
108
115
110
108
103
103
101
103
101
96
98
96
92
95
92
92
92
92
92
1.0
115
115
115
115
115
115
115
115
115
103
103
101
103
101
96
98
96
92
95
92
92
92
92
92
Air handler units are UL Listed up to 0.5 in.wc external static pressure, including air filter, set coil, and largest
kW size heater, unless otherwise noted.
• Flow rate(CFM) is decreased by 3% per 0.1in.wc from 0.8 in.wc to 1.0 in.wc
• If flow rate(CFM) is increased by 400CFM/ton from 1.5RT to 2.5RT of capacity, the ESP value should be
increased by 4.
• If flow rate(CFM) is increased by 400CFM/ton from 3.0RT to 4.5RT of capacity, the ESP value should be
increased by 5.
• in.wc = inch Water Column, inAq
• Factory Default: High Static Pressure,
High static pressure is 0.5 in.wc,
Low static pressure is 0.3 in.wc
If you set ESP incorrectly, the air conditioner may cause cooling & heating capacity down or malfunction.
30 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 31
Product Data
(Unit : CFM)
Capacity
(kBtu/h (RT))
12(1.0)
18(1.5)
24(2.0)
30(2.5)
36(3.0)
42(3.5)
48(4.0)
54(4.5)
5
380
380
480
630
780
1000
1000
1300
Heater Capacity (kW)
10
15
Not available Not available
Not available Not available
480
Not available
630
Not available
780
Not available
1000
1000
1000
1000
1300
1300
20
Not available
Not available
Not available
Not available
Not available
1000
1000
1300
Do not use less than minimum airflow.
There is risk of fire or damage to the product.
Electric Heater Static pressure drop factors
Heater Capacity(kW)
0
5
10
15
20
Static pressure drop (in.wc)
0
– 0.01
– 0.02
– 0.04
– 0.06
If the electric heater has been installed, then the ESP value has to be set.
For every increase in static pressure by 0.01 inWC, the ESP value should be increased by 1.
If the setting ESP value is inappropriate, the provided safety device will turn off the heater according to
the airflow.
* in.wc = inch Water Column, inAq
Installation Manual 31
ENGLISH
Minimum airflow by heater capacity
1,MFL65003108,영영 2017. 9. 11. 영영 5:00 Page 32
Product Data
Air Filter (Field supply) Static pressure drop factors
Capacity(kBtu/h(RT))
12 (1.0)
18 (1.5)
24 (2.0)
30 (2.5)
36 (3.0)
42 (3.5)
48 (4.0)
54 (4.5)
Flow Rate(CFM)
High(530)
Middle(480)
Low (380)
High(580)
Middle(530)
Low(480)
High(710)
Middle(640)
Low(480)
High(880)
Middle(800)
Low(630)
High(990)
Middle(880)
Low(800)
High(1250)
Middle(1100)
Low(1000)
High(1400)
Middle(1260)
Low(1000)
High(1475)
Middle(1400)
Low(1260)
Static pressure drop (in.WC)
-0.02
-0.02
-0.01
-0.03
-0.02
-0.02
-0.04
-0.03
-0.02
-0.05
-0.05
-0.03
-0.07
-0.05
-0.05
-0.11
-0.09
-0.07
-0.14
-0.11
-0.07
-0.18
-0.16
-0.12
If the air filter has been installed, then the ESP value has to be set.
For every increase in static pressure by 0.01 inWC, the ESP value should be increased by 1.
Note : Filters should be used a rating of MERV 4 or less.
If you use filters that has a rating MERV 5 or above, it can cause cooling & heating capacity
down.
32 Vertical Air Handling Unit
1,MFL65003108,영영 2017. 9. 11. 영영 4:59 Page 86
US
1. Please call the installing contractor of your product, as warranty service will be provided by them.
2. If you have service issues that have not been addressed by the contractor, please call 1-888-865-3026.
CANADA Service call Number # : (888) LG Canada, (888) 542-2623
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