LG TB-H488RSS5 Bedienungsanleitung

Ceiling Duct Type

Air Conditioner

SERVICE MANUAL

MODELS: TB-H488RSS5

Contents

Functions ..................................................................................................................................3

Product Specifications .............................................................................................................5

Dimensions ..............................................................................................................................11

Refrigeration Cycle Diagram ..................................................................................................31

Wiring Diagram .......................................................................................................................35

Operation Details ....................................................................................................................51

Installation of Indoor, Outdoor Unit ......................................................................................54

Test running ............................................................................................................................66

Optional Operation .................................................................................................................68

External Static Pressure & air Flow ......................................................................................70

3-way Valve .............................................................................................................................71

Cycle ........................................................................................................................................74

Cycle Troubleshooting Guide ................................................................................................78

Electronic Parts Troubleshooting Guide ..............................................................................79

Electronic control device .......................................................................................................82

Exploded View and Replacement Parts List ........................................................................83

–2–

Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Soft Dry Operation Mode

Auto Operation(Auto Change Over)

Deice (defrost) control (Heating)

Auto Restart

–3–

Hot-start Control (Heating) • The indoor fan does not start until the evaporator piping

temperature will be reached at 28°C.

High head height Drain pump(Optional) • A standard drain-head height of up to 700mm is possible.

Central Control(Optional) •

It is operating individually or totally by central control function.

Group Control(Optional Wiring)

Radio Frequency Control (Optional)

•

Each controller can control 16 units and 8 controllers can be connected.

•

It operates maximum 16 units with the help of only one wired remote

controller and each unit can be randomly started to prevent overcurrent.

• Room temperature sensor. (Thermistor)

•

Maintains the room temperature in accordance with the Setting Temperature.

• Indoor fan is delayed for 5 seconds at the starting.

• Restarting is inhibited for approx. 3 minutes.

• High, Medium, Low

• Intermittent operation of fan at low speed.

• Although the air-conditioner is turned off by a power failure, it is restarted automati-

cally previous operation mode after power supply.

• The setting temperature and desired operation mode are auto-

matically set by fuzzy rule.

• Both the indoor and outdoor fan stop during defrosting.

• Hot start after defrost ends.

–4–

Remote Controller

Operation ON/OFF

Operation Mode Selection

Fan Speed Selection

Room Temperature Display

Temperature Setting

Setting the Timer

Weekly Program

(Cooling

model only) (Heating

model only)

(Low) (Med) (High)

Cooling Operation Mode ( )

Heating Operation Mode ( ) Auto Operation Mode ( )

Soft Dry Operation Mode ( )

Fan Operation Mode

HIMEDLO

Program Holiday

SET/CLR

MinHour

Week

Timer CancelTimer Cancel

: High:39°C ļLOW:11°C

: Only the Fan is in operation.

Cooling Heating

Down to 18°C

Up to 30°C

Down to 16°C

Up to 30°C

1. Specifications

1.1 Indoor unit

-5-

1. Specifications

1.2 Outdoor Unit

-6-

Note :

1. All data are based on the following conditions:

- Cooling Temperature : Indoor 27°C(80.6°F) DB / 19°C(66.2°F) WB

Outdoor 35°C(95°F) DB / 24°C(75.2°F) WB

- Heating Temperature : Indoor 20°C(68°F) DB / 15°C(59°F) WB

Outdoor 7°C(44.6°F) DB / 6°C(42.8°F) WB

- Piping Length : Interconnected Pipe Length = 7.5m

- Difference Limit of Elevation (Outdoor ~ Indoor Unit) is Zero.

2. Wiring cable size must comply with the applicable local and national code.

3. Due to our policy of innovation some specifications may be changed without notification.

4. Sound Level Values are measured at Anechoic chamber.

Therefore, these values can be increased owing to ambient conditions during opration.

TBUH488RSS5

Rated kW 14.0

Rated Btu/h 48,000

Rated kW 15.2

Rated Btu/h 52,000

Cooling Rated kW 5.30

Heating Rated kW 5.00

W / W 2.65 / 3.05

V / Ø / Hz 380-415 / 3 / 50

Cooling Rated A 9.0

Heating Rated A 8.0

Cooling Max. A -

Heating Max. A -

Wiring Connections Power Supply Cable (included Earth) No. x mm2 (AWG) 5C x 3.5 (12)

- White

W x H x D mm 900 × 1,165 × 370

W x H x D inch 35-7/16 × 45-7/8 × 14-9/16

kg (lbs) 95.0 (209.4)

- Scroll

Model x No. SB061YAB x 1

- Three Phase Induction Motor

W x No. 4,050 x 1

- R22

g (oz) 3,600 (141.1)

m (ft) 7.5 (24.6)

g/m (oz/ft) 65 (0.76)

- Capillary

- SUNISO 4GSI or NM56M

cc x No. 1,650 x 1

- (2 × 26 × 17) × 2

- Propeller

m3/min x No. 52.5 x 2

- AC

W x No. 77 x 2

Cooling Rated dB(A) 61

Heating Rated dB(A) 61

Liquid Outer Dia. mm(inch) Ø 9.52 (3/8)

Gas Outer Dia. mm(inch) Ø 19.05 (3/4)

Max. m (ft) 50 (164)

Maximum Height

Difference Outdoor Unit ~ Indoor Unit Max. m (ft) 30 (98.4)

Cooling Min. ~ Max. ℃DB (℉DB) 21 (69.8) ~ 54 (129.2)

Heating Min. ~ Max. ℃DB ( ℉DB) -5(23.0) ~ 24 (75.2)

Heat Exchanger (Row x Column x Fins per inch) x No.

Operation Range

(Outdoor Temperature)

Fan

Fan Motor

Sound Pressure Level

Piping Connections

Piping Length

Type

Air Flow Rate

Type

Dimensions

Casing Color

EER / COP

Type

Refrigerant Oil

Type

Precharged Amount

Charged volume

Power Input

Running Current

Starting Current

Power Supply

Output

Compressor

Refrigerant

Net Weight

Motor type

Motor Output

Chargeless-Pipe Length

Model

Additional Charging Volume

Control

Outdoor unit

Capacity

Cooling

Heating

–9–

Description PCB Connector

CN-PIPE

CN-ROOM

Model No.: TB-H488RSS5

High

Pressure

Switch(By-Pass)

High

Pressure

Switch

Compressor

Outdoor Unit

Indoor Unit

Ø9.52 / 3 way

Flare Connection

Ø19.05 / 3 way

Flare Connection

Ø19.05 / 2 way

Flare Connection

Ø9.52 / 2 way

Flare Connection

: Cooling

: Heating

←

BY-PASS

4 way

Valve

Accumulator

Condenser out

Capillary Tube

Cooling

Capillary Tube

Evaporator in

Capillary Tube

Heating

Capillary Tube

MM MM

Thermistor for

Suction Air temperature

Thermistor for evaporator

outlet temperature

Thermistor for evaporator outlet temperature

Thermistor for Suction Air temperature

565

3.Piping diagrams

Operation Details

(1) The function of main controls/controller

1. Time Delay Safety Control

• 3min... The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.

(Protection of compressor)

• 30sec... The 4-way valve is ceased for 30sec. to prevent the abnormal noise of the refrigerant gas when the

Heating operation is OFF or switched to the other operation mode while compressor is off.

While compressor is running, it takes 3~5 seconds to switch.

2. Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of

already being set to the best speed for Dry Operation by Micom Control.

3. Cooling Mode Operation

• When selecting the Cooling( ) Mode Operation, the unit will operate according to remote controller settings and

the operation diagram is as following.

–10–

Intake Air temp.

SET TEMP.+0.5°C

(COMP. ON)

SET TEMP. -0.5°C

nahteroMnahteroM)FFO.PMOC(

setunim3setunim3

gnitceleSgnitceleSgnitceleS

deepsnafdeepsnafdeepsnaf

COMPRESSOR ON OFF ON OFF ON

INDOOR FAN Low Low

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