LG | CRNN126BJG0 | Installation guide | LG CRNN126BJG0 Owner's manual

LG CRNN126BJG0 Owner's manual
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LG
System
Heat Pump Indoor Unit
INSTALLATION MANUAL
MODELS: CRNN-BN/BJ Series
Type: Ceiling Concealed Duct - Low Static
IMPORTANT
• 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.
Ceiling Concealed Duct - Low Static Type Indoor Unit Installation Manual
TABLE OF CONTENTS
Installation Requirements
Required Parts
Required Tools
Installation Parts Provided....3
Safety Precautions .................4
Installation
Selection the best location ....7
Ceiling opening dimension
and hanging bolt location ......8
Wiring Connection .................9
❏ Installation guide map
❏ Four type "A" screws & plastic
anchors
❏ Connecting cable
❏ Level gauge
❏ Screw driver
❏ Electric drill
❏ Hole core drill
❏ Horizontal meter
❏ Pipes: Gas side
Liquid side
(Refer to Product Data)
❏ Insulation materials
❏ Additional drain pipe
❏ Flaring tool set
❏ Specified torque wrenches
(different depending on model No.)
❏ Spanner .......Half union
❏ A glass of water
❏ Screw driver
Check the Drainage.............10
Installation of Remote
Control..................................13
❏ Hexagonal wrench
❏ Gas-leak detector
❏ Vacuum pump
❏ Gauge manifold
Drain Pipe Work...................14
Installation of Drain Pump ...16
Optional Operation ..............18
❏ Two type "B" screws
2
Indoor Unit
❏ Owner's manual
❏ Thermometer
Installation Parts Provided
Installation
Air filters
Remote Control
Name
Clamp metal
Insulation for
fitting
Screws for
duct flanges
Clamp
Quantity
1 EA
1 set
1 set
8 EA
(Other)
• Owner's manual
• Installation manual
Shape
for gas pipe
for liquid pipe
Installation Manual 3
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
■ Be sure to read before installing the air conditioner.
■ Be sure to observe the cautions specified here as they include important items related to safety.
■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the
following indications.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
■ Installation
Do not use a defective or underrated circuit breaker. Use this
appliance on a dedicated circuit.
For electrical work, contact the
dealer, seller, a qualified electrician, or an Authorized Service
Center.
Always ground the product.
• There is risk of fire or electric shock.
• Do not disassemble or repair the
product. There is risk of fire or electric shock.
• There is risk of fire or electric shock.
Install the panel and the cover
of control box securely.
Always install a dedicated circuit and breaker.
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.
4
Indoor Unit
Safety Precautions
Do not modify or extend the
power cable.
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.
Be cautious when unpacking
and installing the product.
• There is risk of fire or electric shock.
• Moisture may condense and wet or
damage furniture.
• Sharp edges could cause injury. Be
especially careful of the case edges
and the fins on the condenser and
evaporator.
For installation, always contact
the dealer or an Authorized
Service Center.
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, electric shock,
explosion, or injury.
• 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.
■ Operation
Do not store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
Gasolin
Installation Manual 5
Safety Precautions
■ Installation
Always check for gas (refrigerant) leakage after installation or
repair of product.
Install the drain hose to ensure
that water is drained away properly.
Keep level even when installing
the product.
• Low refrigerant levels may cause
failure of product.
• A bad connection may cause water
leakage.
• To avoid vibration or water leakage.
90˚
Do not install the product where
the noise or hot air from the outdoor unit could damage the
neighborhoods.
Use two or more people to lift
and transport the product.
Do not install the product where
it will be exposed to sea wind
(salt spray) directly.
• It may cause a problem for your
neighbors.
• Avoid personal injury.
• It may cause corrosion on the product.
Corrosion, particularly on the condenser and evaporator fins, could
cause product malfunction or inefficient
operation.
6
Indoor Unit
Installation
Installation
Read completely, then follow step by step.
Selection of the best location
Install the air conditioner in the location that satisfies the following conditions.
• The place shall easily bear a load exceeding four times the indoor unit’s weight.
• The place shall be able to inspect the unit as the figure.
• The place where the unit shall be leveled.
• The place shall allow easy water drainage.(Suitable dimension “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.
(unit: mm)
600
Inspection hole
(600X600)
Control box
1000
Top view
600
Front
Front view
H
CAUTION : In case that the unit is installed near the sea, the installation parts
may be corroded by salt, The installation parts (and the unit) should be taken
appropriate anti-corrosion measures.
Installation Manual 7
Installation
Ceiling dimension and hanging bolt location
■ Installation of Unit
Install the unit above the ceiling correctly.
D
B
CASE 1
C
E
POSITION OF SUSPENSION BOLT
• Apply a joint-canvas between the unit and duct to absorb
unnecessary vibration.
F
(Unit:mm)
Dimension
A
C
D
E
F
G
H
I
2.1(7,165)
783 667
300 100
500
20
639 120
220
2.6(8,871)
873 767
300 100
500
20
729 120
220
3.5(11,942) 873 767
300 100
500
20
729 120
220
I
B
H
A
1-3 mm
Capacity
[kW(Btu/h)]
G
CASE 2
Drainage hole
• Install the unit leaning to a drainage hole side as a figure
for easy water drainage.
M10 Nut
POSITION OF CONSOLE BOLT
• A place where the unit will be leveled and that can support the weight of the unit.
• A place where the unit can withstand its vibration.
• A place where service can be easily performed.
X4
(Local
M10 SP. washer X 4 supply)
M10 washer
X4
X4
(Local
M10 SP. washer X 4 supply)
M10 Nut
X4
M10 washer
NOTICE
• Throughly study the following installation locations:
1. In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the fan, the fin of the
heat exchanger, resulting in heat exchange reduction, spraying, dispersing of water drops, etc.
In these cases, take the following actions:
• Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so that it draws oily
steam which should not flow into the suction of the air conditioner.
• Make enough distance from a cooking room to install the air conditioner in such a place where it may not suck in oil
steam.
2. Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is in suspension in factories, etc.
3. Avoid places where inflammable gas is generated, flows in, is stored or vented.
4. Avoid places where sulfurous acid gas or corrosive gas is generated.
5. Avoid places near high frequency generators.
8
Indoor Unit
Installation
• Select and mark the position for fixing bolts.
• Drill the hole for set anchor on the face of ceiling.
• Insert the set anchor and washer onto the suspension bolts for locking the suspension bolts on the
ceiling.
• Mount the suspension bolts to the set anchor firmly.
• Secure the installation plates onto the suspension
bolts (adjust level roughly) using nuts, washers
and spring washers.
Old building
New building
1 Set anchor
2 Plate washer
3 Spring washer
4 Nut
CAUTION : Tighten the nut and bolt
to prevent unit falling.
5 Suspension
bolts
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
Terminal Block in Indoor
1(L)
2(N)
3
Terminal Block in Outdoor
4
C
D
Vcc
A
B
INDOOR POWER INPUT
WARNING : Make sure that the screws of the terminal are free from looseness.
Clamping of cables
1) Arrange 2 power cables on the control panel.
2) First, fasten the steel clamp with a screw to the inner boss of control panel.
3) For the cooling model, fix the other side of the clamp with a screw strongly. For the heat pump model, put the
0.75mm2 cable(thinner cable) on the clamp and tighten it with a plastic clamp to the other boss of the control
panel.
4) In Australia, the length of power supply cord measured from the entry of the power supply cord to the middle of
live pin on the power plug should be over 1.8m.
Installation Manual 9
Installation
THERMAL INSULATION
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
Checking the Drainage
1. Remove the Air Filter.
2. Check the drainage.
• Spray one or two glasses of water upon the
evaporator.
• Ensure that water flows drain hose of indoor
unit without any leakage.
10
Indoor Unit
Thermal insulator for refrigerant pipe
(Local supply) Thermal insulator for
piping(Local supply)
Overlap with thermal
insulator for piping.
Hose crip for thermal insulator(Local supply)
Make sure that there is no clearance here.
Installation
CAUTION
1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner.
2. Minimum thickness of the insulation for the connecting pipe shall be 5mm.
Front of view
• The unit must be horizontal or declined to the drain hose connected when finished
installation.
1~3mm
Ceiling
Drainage hole
CORRECT
Drainage hole
INCORRECT
CAUTION FOR GRADIENT OF
UNIT AND DRAIN PIPING
• Possible drain-head height is up to 700mm.
So, it must be installed below 700mm.
• Keep the drain hose downward up to
1/50~1/100 inclination.
Prevent any upward flow or reverse flow in any
part.
Lay the drain hose with a downware
inclination so water will drain out.
1/50~1/100
Drain Pipe
MAX 700mm
Drain Pump
INCORRECT
Applied U-Trap Dimension
CORRECT
• Install the P-Trap (or U-Trap) to prevent
a water leakage caused by the blocking
of intake air filter.
A ≥ 70mm
B ≥ 2C
C ≥ 2 x SP
SP = External Pressure
(mmAq)
Ex) External Pressure
= 10mmAq
A ≥ 70mm
B ≥ 40mm
C ≥ 20mm
B
C
U-Trap
A
Installation Manual 11
Installation
CAUTION:
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the method
of wiring, be guided by the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw 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 maintained at more than 90 percent of the rated voltage
marked on the name plate.
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 a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the normal function of a 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.)
12
Indoor Unit
Installation
Installation of Remote Control
• Although the room themperature sensor is in the indoor unit, the remote control should be installed in such
places away from direct sunlight and high humidity.
Installation of the remote control
• Select places that are not splashed with water.
• Select control position after receiving customer approval.
• The room temperature sensor is built in the indoor unit.
• This remote control equipped with liquid crystal display. If this position is higher or lower, display is difficult to
see.(The standard height is 1.2 ~1.5m high)
Routing of the remote control cord
• Keep the remote control cord away from the refrigerant piping and the drain piping.
• To protect the remote control cord from electrical noise, place the cord at least 5cm away from other power
cables (audio equipment. television set, etc.)
• If the remote control cord is secured to the wall, provide a trap at the top of the cord to prevent water droplets
from running.
CAUTION : Use the wireless remote control with the wired.
If you want to use wireless alone, you should do following process.
1) Do auto addressing in connecting the wired.
2) After compelting auto addressing, turn off the power and disconnect the wired.
WIRED REMOTE CONTROL INSTALLATION
DISASSEMBLING
• Separate the under plate from Remote
control box.
Front case
Th
• Attach insulator to under plate.
el
ow
er
pa
rt
Lever carefully
the box open
using a screw
driver, etc.
Remote control
box body
• Fix the under plate on the wall
• Fix the cord clamps on the wall by ø 3 tapping screws (accessory).
• Fix the remote control cord.
Face of wall
Cord clamp
(accessory)
Under plate
Screw (accessory)
Remote control
ELECTRICAL WIRING
(Main board)
CN REMO
Wire and make sure that teminal
numbers are matched on unit side and
remote control side.
The maximum length of the cord is 100m.
If the length of the cord exceeds 50m,
2
use a wire size greater than 0.5mm .
Installation Manual 13
Installation
Drain Pipe Work
1) Drain pipe gradient and support
a) - The drain pipe must be fitted at a gradient of at least 1/100.
- The drain pipe should be as short as possible and free from airlocks.
Indoor unit
Gradient of least 1 / 100
(1cm / 1m)
b) - Suspension bolts should be used th support long stretches of drain pipe in order to ensure that a
gradient of 1/100 is maintained (PVC pipe should not be bent)
Spacing of supports for horizontal piping
Class
Norminal diameter
Spacing
Rigid PVC pipe
25~40mm
1.0m or less
c) - The length of pipe laid horizontally should be kept a minimum.
2) Drain trap
Fit any indoor unit whose drain pipe connection is subjected to negative pressure, with a drain trap.
a) Rig the drain trap shown in the drawing below.
Indoor unit
H
H
b) Provide one trap per unit. A single trap for converging units will prove ineffective.
c) Rig the trap to allow for future changing.
Plug
Indoor unit
Indoor unit
Plug
14
Indoor Unit
Installation
3) Ground drain piping
a) It is standard work practice to make connections to the main pipe from above. The pipe down from the
combination should be as large as possible.
Face the vent pipe mouth downward to keep
foreign matter from penetrating the system
Face piping
downward
Vent pipe
b) The pipe work should be kept as short as possible and he number of indoor units per group kept to a
minimum.
4) Use of an auxiliary drain hose(flexible)
a) It the drain pan made of polystyrene foam is used then an auxiliary drain hose(flexible) is also essential a
flexible drain hose permits the drain socket and drain pipe to be connected without difficulty and prevents
any undue strain being placed on he drain pan.
Metal clamp
Auxiliary drain hose
Drain pan
Thermal insulation (drain pipe area)
Metal clamp
Thermal insulation(bend area)
❈ Important points
- The drain pipe should be at least equal in size to that of the indoor unit.
- The drain pipe is thermally insulated to prevent the formation of condensation inside the pipe.
- The drain up mechanism should be fitted before the indoor unit is installed and when the electricity has
been connected some water should be added to the drain pan and the drain pump check to see that it is
functioning correctly.
- Al connections should be secure. (Special care is needed with PVC pipe)
- Insulate auxiliary drain hose with thermal insulation band.
Installation of Ceiling Concealed Duct(Low-Static) Type Indoor Unit
Installation Manual 15
Installation
Installation of drain pump
1) Safety First
• Cut off the power supply before installation and maintenance.
• Drain Pump Assy, Elbow and Hose must be installed at safe area where it is far away from the user.
• Drain Pump Assy must be installed at appointed location.
• All wiring and connections are for installation only.
1
2
2) Quantity
Quantity
1
1
1
2
10
1
1
Package contents
Drain Pump Assy(AC220~240V, 50/60Hz, 400cm3/min)
Elbow(ø32mm)
Hose
Tie Wrap
Screw
Rubber
Installation manual
3) Service Parts List
16
No.
Location No.
P/No.
Description
1
158590
5858A10001Z
Pump Water
2
266012
6601A20001J
Switch Assy, Float
Indoor Unit
Remark
Installation
5) Attention
1. Possible drain-head height is up to 700mm. So, it
must be installed below 700mm.
1/50~1/100
1/50~1/100
2. Keep the drain hose downward up to 1/50~1/100
inclination.
Prevent any upward flow or reverse flow in any
part.
1/50~1/100
Drain Pipe
MAX 700mm
Drain Pump
3. 5mm or thicker formed thermal insulator is provided for the drain pipe.
Thermal insulator
(Local supply)
Drain pipe
(Local supply)
Unit
Elbow
Drain pump
4. Upward routing is not allowed.
5. Be sure to check the drain pump for normal operation and abnormal noise when electrical wiring is
complete.
Wall
Drain hose
Installation Manual 17
Installation
Optional operation
1) Two Thermistor System
Room Temp. sensor
Slide switch for 2 Thermistor
TH
R13H
OP2
R14H OP3
REMO
MAIN
2TH
REMO
MAIN
2TH
CO1H
OP5R16H
OP4
R15H
OP1
R19H
R11H
SW TH
Position 2
Position 1
Position 3
R12H
OP7
R18H
R17H
OP6
LO
C070
STAND
R03S
HI
R04S
SW
R01S
R02S
(1) Open the rear cover of the wired remote-control to set
the mode.
(2) Select one of three selectable modes as follows.
• Position 1:
The room temperature is controlled by the thermistor
of the main body.
• Position 2:
The room themperature is controlled by the thermistor of the wired remote-control, control the temperature according to the position of wired remote-control.
• Position 3:
The room temperature is controlled by lower temperature between the temperature of main body and of
remote-control sensor.
(3) Move the slide switch to set position.
(4) Close the rear cover and check if it works normally.
HIGH
Slide switch for ceiling height
CAUTION :
• Select the position after counselling with a customer.
In case of cooling mode, room temperature is controlled by the main body sensor.
• To control the room temperature by a wired remote control, install the remote control
(room temp. sensor) to sense the temperature more accurately.
• Maunfactured in the position 3.
2) Adjusting air volume to the height of ceiling
Indoor Unit
Low ceiling
Standard
(Default)
High Ceiling
Lo
R13H
OP2
R14H OP3
SW TH
STAND
REMO
MAIN
2TH
Hi
R12H
CO1H
OP1
R19H
R11H
OP7
R18H
R17H
OP6
LO
STAND
R03S
HI
Slide switch for ceiling height
Change of air volume
Increasing
Decreasing
Remark
Maunfactured in standard mode
SW
HIGH
R02S
18
Mode of slide switch
High Ceiling
Standard
Low Ceiling
TH
R04S
Ceiling height
more than 4.0m
3.2~4.0m
less than 3.2m
Slide switch for 2 Thermistor
C070
You can choose the RPM(or air volume) of indoor
motor according to the height of ceiling to supply the
comfortable atmosphere to consumers.
Procedure
1. Choose the selectable position in the table after
measuring the height of ceiling.
2. In the case of changing the height as "high" or "low",
open the rear cover of the wired remote-control.
3. Move the slide switch to the set position.
4. Close the rear cover and check if it works nomally.
R01S
OP5R16H
OP4
R15H
P/No.: 3828A20326A
Printed in Korea
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