website http://www.lgservice.com
LG
LG Casstte Type
Air Conditioner
INSTALLATION MANUAL
ESPAÑOL FRANÇAIS ENGLISH
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.
Cassette Type Air Conditioner Installation Manual
TABLE OF CONTENTS
Installation |
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Requirements |
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Safety Precautions ..... |
3 |
Installation of Indoor, |
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Outdoor unit ................ |
6 |
Ceiling opening |
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dimensions and hanging |
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bolt location.................. |
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The indoor unit |
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installation................... |
9 |
Remote controller |
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installation................... |
9 |
Wiring connection .... |
11 |
Connecting Pipes to |
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the Indoor Unit .......... |
13 |
Installation of |
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decorative panel ....... |
15 |
Required Parts
•Connecting cable
•Four Type "A" Screw
•Hanging Bolt
(W 3/8 or M10 length 650mm)
•Pipes: Gas side Liquid side
•Insulated drain hose
•Additional Drain hose (Inner Dia.............32mm)
Required Tools
•Level
•Screw driver
•Electric drill
•Hole core drill (ø70mm)
•Flaring Tools set
•Torque Wrenches
•Hexagonal Wrench (4mm, 5mm)
•Gas-leak detector
Indoor unit drain piping |
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16 |
Test running .............. |
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• Owner’s Manual |
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• Thermometer |
Optional operation.... |
21 |
2 Cassette type Air Conditioner
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
■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. |
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
■ 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.
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.
•Improper wiring or installation may cause fire or electric shock
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.
ENGLISH
Installation Manual 3
Safety Precautions
Do not modify or extend the power cable.
Be cautious when unpacking and installing the product.
• There is risk of fire or electric shock.
•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.
• There is risk of fire, electric shock, explosion, or injury.
•It may cause injury, accident, or damage to the product.
Be sure the installation area does not deteriorate with age.
•If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and
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.
■ Operation
Do not store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
Gasolin
4 Cassette type Air Conditioner
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Safety Precautions |
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CAUTION |
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■ Installation |
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Always check for gas (refrigerant) |
hose to ensure that water is |
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installation or repair of product. |
properly. |
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• Low refrigerant levels may |
may cause water leakage. |
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Keep level even when installing |
the product where the noise or hot air |
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unit could damage the |
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• To avoid vibration or water |
a problem for your neighbors. |
ENGLISH
90°
Use two or more people to lift product.
• Avoid personal injury.
the product where it will be sea wind (salt spray) directly.
corrosion on the product. particularly on the condenser and fins, could cause product
or inefficient operation.
Installation Manual 5
Installation of Indoor, Outdoor Unit
Installation of Indoor, Outdoor Unit
Selection
of
the
best
location
1.Indoor unit
•There should not be any heat source or steam near the unit.
•There should not be any obstacles to prevent the air circulation.
•A place where air circulation in the room will be good.
•A place where drainage can be easily obtained.
•A place where noise prevention is taken into consideration.
•Do not install the unit near the door way.
•Ensure the spaces indicated by arrows from the wall, ceiling, or other obstacles.
•The indoor unit must keep the maintenance space.
Ceiling |
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more |
Ceiling Board |
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Ceiling Board |
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or |
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30 |
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less |
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50 or |
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or more |
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50 or |
30 or |
more |
100 |
250 |
less |
more |
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Above |
330 or |
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Unit:cm |
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Floor |
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2. Outdoor unit |
More |
Sunroof |
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• If an awning is built over the unit to prevent |
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direct sunlight or rain exposure, be careful |
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Fence |
30cm |
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not restricted. |
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• There should not be any animals or plants |
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obstacles |
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which could be affected by hot air |
More than 50cm |
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discharged. |
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More than 70cm |
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• Ensure the spaces indicated by arrows |
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from the wall, ceiling, fence or other |
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obstacles. |
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Sunroof |
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More than |
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50cm |
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Fence obstaclesor
More than 350cm
More than 50cm
More than 100cm
6 Cassette type Air Conditioner
Installation of Indoor, Outdoor Unit
3. Piping length and the elevation |
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Capacity |
Pipe Size |
Length A(m) |
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Elevation B(m) |
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*Additional |
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(Diameter:Ø) |
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refrigerant(g/m) |
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Gas |
Liquid |
Standard |
Max. |
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Standard |
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Max. |
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24k Btu/h |
1/2"(12.7mm) |
1/4"(6.35mm) |
7.5(25') |
30(100') |
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5(16') |
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15(50') |
20(0.22 oz./ft.) |
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34k Btu/h |
5/8"(15.88mm) |
1/4"(6.35mm) |
7.5(25') |
35(115') |
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5(16') |
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20(66') |
30(0.32 oz./ft.) |
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ENGLISH
Indoor unit |
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Outdoor unit |
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Outdoor unit |
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A |
Oil trap |
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Outdoor unit |
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B |
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Indoor unit |
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B |
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Indoor unit |
If piping length is more than 5m
CAUTION:
•Rated performance for refrigerant line length of:7.5m
•Capacity is based on standard length and maximum allowance length is on the basis of reliability.
•Improper refrigerant charge may result in abnormal cycle.
•Oil trap should be installed every 10 meters.
Installation Manual 7
Ceiling opening dimensions and hanging bolt location
Ceiling opening dimensions and hanging bolt location
• The dimensions of the paper model for installing are the same as those of the ceiling opening dimensions.
•Select and mark the position for fixing bolts and piping hole.
•Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose.
•Drill the hole for anchor bolt on the wall.
CAUTION:
•This air-conditioner uses a drain pump.
•Horizontly install the unit using a level gauge.
•During the installation, care should be taken not to damage electric wires.
875 (Ceiling opening)
45 |
785 (Hanging bolt) |
45 |
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101.5 |
(Ceiling opening) |
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840 Unit size |
672 (Hanging bolt) |
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Unit size |
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840 |
101.5 |
875 |
Unit:mm |
Ceiling |
Level gauge |
Ceiling board |
NOTICE
•Thoroughly study the following installation locations:
1.In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying, dispersing of water drops, drain pump malfunction, 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 oily steam.
Air conditioner
Take enough distance
Use the ventilation fan for smoke-collecting hood with sufficient capacity.
Cooking table
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 Cassette type Air Conditioner
The Indoor Unit Installation
The Indoor Unit Installation
Hanging bolt (W3/8 or M10)
Nut (W3/8 or M10)
Spring washer (M10)
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Ceiling |
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Keep the length of the bolt |
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Air Conditioner body |
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150mm |
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Flat washer for M10 |
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from the bracket to 40mm |
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(accessory) |
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Ceiling board |
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Ceiling board |
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Flat washer for M10 |
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(accessory) |
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Paper model |
Set screw of |
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Nut |
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for installation |
paper model (4 pieces) |
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(W3/8 or M10) |
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Adjust the same height |
Open the ceiling board |
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along the outer edge of the |
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paper model |
• The following parts is option.
Hanging Bolt |
- W 3/8 or M10 |
Nut |
- W 3/8 or M10 |
Spring Washer - M10 |
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Plate Washer |
- M10 |
CAUTION: Tighten the nut and bolt to prevent unit falling.
•Drill the piping hole on the wall slightly tilted to the outdoor side using a Ø 70 hole-core drill.
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Wall |
Indoor |
Outdoor |
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5~7mm |
ENGLISH
Remote Controller Installation
•Although the room temperature sensor is in the indoor unit, the remote controller should be installed in such places away from direct sunlight and high humidity.
Installation of the remote controller
•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 controller 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 controller cord
•Keep the remote controller cord away from the refrigerant piping and the drain piping.
•To protect the remote controller cord from electrical noise, place the cord at least 5cm away from other power cables (audio equipment, television set, etc.)
•If the remote controller cord is secured to the wall, provide a trap at the top of the cord to prevent water droplets from running.
Installation Manual 9
Remote Controller Installation
Wired
Remote
Control
Installation
DISASSEMBLING
Front case |
• Separate the under plate from Remote control box. |
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The |
lower |
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part |
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Lever carefully |
Remote control |
the box open |
box body |
using a screw |
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driver, etc. |
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• Fix the under plate on the wall
Face of wall Under plate
Screw (accessory)
ELECTRICAL WIRING
(Main board)
CN REMO
Wire and make sure that terminal numbers are matched on unit side and remote controller side.
•Fix the cord clamps on the wall by
ø3 tapping screws (accessory).
•Fix the remote control cord.
Cord clamp (accessory)
Remote controller
The maximum length of the cord is 100m. If the length of the cord exceeds 50m, use a wire size greater than 0.5mm2.
Remote
Control
Preparation
HOW TO MOUNT ONTO A WALL
HOW TO INSERT BATTERIES
Remove the battery cover from the remote controller.
•Slide the cover according to the arrow direction.
Insert the two batteries.
•Be sure that the (+) and (-) directions are correct.
•Be sure that both batteries are new.
Re-attach the cover.
• Slide it back into position.
•Do not use rechargeable batteries, such batteries differ from standard dry cells in shape, dimensions, and performance.
•Romove the batteries from the remote controller if the air conditioner is not going to be used for some long time.
10 Cassette type Air Conditioner
Wiring Connection
Wiring Connection
• Open the control box cover and connect the Remote controller cord and Indoor power wires.
power cord |
Control box cover |
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Remote |
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controller |
[Air inlet side view] |
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cord |
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Control box cover screw |
24k/34k Btu/h (1Ø)
• Cooling & Heating type
Terminals on the indoor unit |
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1(L) 2(N) |
3 |
4 |
5 |
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Terminals on the outdoor unit |
1(L) 2(N) |
1(L) 2(N) |
3 |
4 |
5 |
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POWER |
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INPUT |
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CAUTION
The power cord connected to the outdoor unit should be complied with the following specifications (Rubber insulation, type H05RN-F approved by HAR or SAA).
NORMAL CROSS-SECTIONAL AREA
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Capacity |
1 Phase |
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24k Btu/h |
2.1mm2 |
G |
34k Btu/h |
3.3mm2 |
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N/Y |
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L |
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20mm |
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The connecting cable connected to the indoor and outdoor unit should be complied with the following specifications (Rubber insulation, type H05RN-F approved by HAR or SAA).
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NORMAL |
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CROSS-SECTIONAL |
G |
AREA 2.1mm2 (24k/34k) |
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N/Y |
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L |
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If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer of its service agent.
WARNING:
Make sure that the screws of the terminal are free from looseness.
ENGLISH
Installation Manual 11
Wiring Connection
Electrical
Wiring
1.All wiring must comply with LOCAL REGULATIONS.
2.Select a power source that is capable of supplying the current required by the air conditioner.
3.Feed the power source to the unit via a distribution switch board designed for this purpose.
4.The terminal screws inside the control box may be loose due to vibration during transport. Check the screws for loose connection.
(Running the air conditioner with loose connection can overload and damage electrical components.)
5.Always ground the air conditioner with a grounding wire and connector to meet the LOCAL REGULATION.
Main power source
Use circuit breaker
Refrigerant pipe
Connecting
the
cable
to
Outdoor
Unit
1.Remove the Cover control from the unit by loosening a screw.
Connect the wires to the terminals on the control board individually as following.
2.Secure the cable onto the control board with the holder (clamper).
3.Refix the cover control to the original position with the screw.
4.Use a recongnized circuit breaker between the power source and the unit. A disconnection device to adequately disconnect all supply lines must be fitted.
Outdoor unit
Terminal block |
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Over 5mm |
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(0.2") |
Conduit panel |
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Connecting |
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cable |
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Power supply |
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cord |
Cover control |
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12 Cassette type Air Conditioner
Connecting Pipes to the Indoor Unit
Connecting Pipes to the Indoor Unit
Preparation
of
Piping
Main cause of gas leakage is defect in flaring |
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work. Carry out correct flaring work in the |
Copper |
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following procedure. |
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Slanted |
Uneven Rough |
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tube |
90° |
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1. Cut the pipes and the cable. |
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• Use the accessory piping kit or the pipes |
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purchased locally. |
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• Measure the distance between the indoor |
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Pipe |
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and the outdoor unit. |
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Reamer |
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• Cut the pipes a little longer than measured |
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distance. |
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• Cut the cable 1.5m longer than the pipe |
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Point down |
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length. |
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2.Burrs removal
•Completely remove all burrs from the cut cross section of pipe/tube.
• Put the end of the copper tube/pipe to |
Flare nut |
downward direction as you remove burrs in |
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order to avoid to let burrs drop in the tubing. |
Copper tube |
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3. Putting nut on
•Remove flare nuts attached to indoor and outdoor units, than put them on pipe/tube having completed burr removal.
(Not possible to put them on after flaring work)
4. Flaring work |
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Handle |
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Bar |
Bar |
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flaring tool for R-410A as shown below. |
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"A" |
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Yoke |
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Outside diameter |
A |
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Cone |
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inch |
mm |
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Ø6.35 |
1/4 |
1.0~1.5 |
Copper pipe |
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Ø9.52 |
3/8 |
1.0~1.5 |
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Clamp handle |
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Ø12.7 |
1/2 |
1.0~1.5 |
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Red arrow mark |
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Ø15.88 |
5/8 |
1.0~1.5 |
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Ø19.05 |
3/4 |
2.0~3.0 |
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Firmly hold copper tube in a bar(or die) as |
Smooth all round |
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Inside is shining without scratches |
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indicated dimension in the table above. |
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5. Check |
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= Improper flaring = |
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• Compare the flared work with figure below. |
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• If flare is noted to be defective, cut off the |
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flared section and do flaring work again. |
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Inclined |
Surface |
Cracked Uneven |
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Even length |
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damaged |
thickness |
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all round |
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Installation Manual |
13 |
ENGLISH
Connecting Pipes to the Indoor Unit
Piping
Connection
1.Form the piping according to its routing. Avoid bending and bending back the same piping point more than three times. (This will result in hardening the pipe.)
2.After deforming the piping, align centers of the union fitting of the indoor unit and the piping, and tighten them firmly with wrenches.
3.Connect pipe to the service valve or ball valve which is located below the outdoor unit.
4.After completing the piping connection, be sure to check if there is gas leakage in indoor and outdoor connection.
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Liquid side |
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Indoor |
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unit |
Outdoor |
Flare connection |
unit |
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Gas side |
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Flare connection |
Vacuum
drying
After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit.
The vacuum drying must be carried out using the service ports of both the liquid and gas side valves.
CAUTION: Use two wrenches and tighten with regular torque.
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Flare nut fastening torque |
Ø6.35mm |
1.8kg.m |
Ø9.52mm |
2.7kg.m |
Ø12.7mm |
Union |
3.7kg.m |
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Ø15.88mm |
4.7kg.m |
Ø19.05mm |
5.7kg.m |
14 Cassette type Air Conditioner
Installation to Decorative Panel
Installation to Decorative Panel
The decorative panel has its installation |
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Before installing the decorative panel, |
direction. |
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always remove the paper template. |
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1.Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10mm in length.)
The fixing screws (hexagon M5 screw) are included the decorative panel box.
2.Remove the air inlet grille from the decorative panel. (Remove the hook for the air inlet grille cord.)
3.Hook the decorative panel key hole ( ) on the screws fixed in step above, and slide the panel so that the screws reach the key hole edge.
4.Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws)
5.Connect the louver motor connector and display connector.
6.After tightening these screws, install the air inlet grille (including the air filter).
Air conditioner unit |
Piping side |
Decorative panel fixing screws (hexagon M5 screws) Temporally fitting at 2 places (Tightening about 10mm)
InletLouverGrillemotor
Decorative panel
Install the panel after making sure that the piping side of the unit body matches the piping indication of the decorative panel
Control box cover
The arrow () should point
to the side where the pipes are.
Display
Key holes
Lead wire for louver motor and display
Decorative panel fixing screws (Hexagon M5 screw)
ENGLISH
Inlet Grille
Installation Manual 15
Indoor Unit Drain Piping
CAUTION: Install certainly the decorative panel.
Cool air leakage causes sweating. Water drops fall.
Good example |
Bad example |
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Air conditioner unit |
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Air conditioner |
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Air |
Cool air leakage |
unit |
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(no good) |
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Ceiling |
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Ceiling |
board |
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board |
Decorative panel |
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Decorative |
Fit the insulator (this part) and |
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panel |
be careful for cool air leakage
Indoor Unit Drain Piping
•Drain piping must have down-slope (1/50 to 1/100): be sure not to provide up-and-down slope to prevent reversal flow.
•During drain piping connection, be careful not to exert extra force on the drain port on the indoor unit.
•The outside diameter of the drain connection on the indoor unit is 32mm.
Piping material: Polyvinyl chloride pipe VP-25 and pipe fittings
•Be sure to execute heat insulation on the drain piping.
•Install the drain raising pipes at a right angle to the indoor unit and no more than 300mm from the unit.
Pipe clamp |
Upward |
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routing |
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not allowed |
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Indoor unit |
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Maintenance |
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drain port |
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300mm or less |
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1 -1.5m |
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700 or less |
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Drain raising pipe |
Clamp metal(attached) |
Drain hose(attached) |
Heat insulation material: Polyethylene foam with thickness more than 8 mm.
Drain
test
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
Feed water |
Flexible drain hose |
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(accessory) |
Main drain pipe
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Drain |
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Drain Pump |
port |
Glue the joint |
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Drain hose connection |
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Use the clip (accessory) |
Drain pan
•Connect the main drain pipe to the exterior and leave it provisionally until the test comes to an end.
•Feed water to the flexible drain hose and check the
piping for leakage.
•Be sure to check the drain pump for normal operating and noise when electrical wiring is
complete.
•When the test is complete, connect the flexible drain hose to the drain port on the indoor unit.
16 Cassette type Air Conditioner
Indoor Unit Drain Piping
HEAT INSULATION
1.Use the heat insulation material for the refrigerant piping which has an excellent heatresistance (over 120°C).
2.Precautions in high humidity
circumstance:
This air conditioner has been tested according to the "KS Standard Conditions with Mist" and confirmed that there is not any default. However, if it is operated for a long time in high humid atmosphere (dew point temperature: more than 23°C), water drops are liable to fall. In this case, add heat insulation material according to the following procedure:
•Heat insulation material to be prepared... Adiabatic glass wool with thickness 10 to 20mm.
•Stick glass wool on all air conditioners that are located in ceiling atmosphere.
Fastening band (accessory)
Refrigerant piping
Indoor unit
Thermal insulator (accessory)
FORM THE PIPINGS
1.Wrap the connecting portion of indoor unit with the Insulation material and secure it with two Plastic Bands. (for the right pipings)
•If you want to connect an additional drain hose, the end of the drain-outlet should keep distance from the ground. (Do not dip it into water, and fix it on the wall to avoid swinging in the wind.)
In case of the Outdoor unit being installed below position of the Indoor unit.
2.Tape the Pipings, drain hose and Connecting Cable from bottom to top.
3.Form the pipings gathered by taping along the exterior wall and fix it onto the wall by saddle or equivalent.
•In addition to the normal heat insulation (thickness: more than 8mm) for refrigerant piping (gas piping: thick piping) and drain piping, add further 10mm to 30mm thickness material.
Seal a small opening around the pipings with gum type sealer.
Plastic Band
Drain hose Taping
Pipings
Connecting cable
Power supply cord
Trap is required to prevent water from entering into electrical parts.
ENGLISH
Installation Manual 17
Indoor Unit Drain Piping
In case of the Outdoor Unit being installed above position of the Indoor Unit.
2.Tape the Pipings and Connecting cable from bottom to top.
3.Form the pipings gathered by taping along the exterior wall, and make the trap prevent water from entering into the room.
4.Fix the pipings onto the wall by saddle or equivalent.
Seal a small opening around the pipings with gum type sealer.
Trap
18 Cassette type Air Conditioner
Test running
Test running
1.PRECAUTIONS IN TEST RUN
•The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated.
CAUTION For test run, carry out the cooling operation firstly even during heating season. If heating operation is carried out firstly, it leads to the trouble of compressor. Then attention must be paid.
Carry out the test run more than 5 minutes without fail. (Test run will be cancelled 18 minutes later automatically)
•The test run is started by pressing the room temperature checking button and down timer button for 3 seconds at the same time.
•To cancel the test run, press any button.
CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE
•After completing work, be sure to measure and record trial run properties, and store measured data, etc.
•Measuring items are room temperature, outside temperature, suction temperature, blow out temperature, wind velocity, wind volume, voltage, current, presence of abnormal vibration and noise, operating pressure, piping temperature, compressive pressure.
•As to the structure and appearance, check following items.
Is the circulation of air adequate? |
Is the remote controller switch operated? |
Is the draining smooth? |
Is there any faulty wiring? |
Is the heat insulation complete |
Are not terminal screws loosened? |
(refrigerant and drain piping)?
Is there any leakage of refrigerant?
M4......118N.cm{12kgf.cm} M5......196N.cm{20kgf.cm}
M6......245N.cm{25kgf.cm} M8......588N.cm{60kgf.cm}
2.Connection of power supply
1.Connect the power supply cord to the independent power supply.
•Circuit breaker is required.
2.Operate the unit for fifteen minutes or more.
3. Evaluation of the performance |
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1. Measure the temperature of the |
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intake and discharge air. |
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2. Ensure the difference between the |
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intake temperature and the discharge |
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one is more than 8°C (Cooling) or |
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reversely (Heating). |
Thermometer |
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Installation Manual |
19 |
ENGLISH
Test running
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.).
20 Cassette type Air Conditioner
Optional Operation
Optional Operation
1.Two Thermistor System
(1)Open the rear cover of the wired remote-controller to set the mode.
(2)Select one of three selectable modes as follows.
• Position 1: The room themperature is controlled by the thermistor of the wired remotecontroller, control the temperature according to the position of wired remotecontroller.
• Position 2: The room temperature is controlled by the thermistor of the main body.
• Position 3: The room temperature is controlled by lower temperature between the temperature of main body and of remote-controller sensor.
(3) Move the slide switch to set position.
Slide switch for 2 Thermistor
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2
3
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2 |
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3 |
2
3
(4) Close the rear cover and check if it works normally.
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 controller, install controller(room temp. sensor) to sense the temperature more accurately.
•Manufactured in the position 3.
ENGLISH
Installation Manual 21
Optional Operation
2. Adjusting air volume to the height of ceiling
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.
Ceiling height |
Mode of slide switch |
Change of air volume |
Remark |
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more than 3.3m |
High Ceiling |
Increasing |
Manufactured in |
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2.7~3.3m |
Standard |
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standard mode |
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less than 2.7m |
Low Ceiling |
Decreasing |
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2.In the case of changing the height as "high" or "low", open the rear cover of the wired remotecontroller.
3.Move the slide switch to the set position.
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2
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1
2
3
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2
3
Slide switch for ceiling height
4. Close the rear cover and check if it works normally.
22 Cassette type Air Conditioner