McQuay CK20AR User manual

CEILING CASSETTE

SPLIT TYPE

AIR CONDITIONER

INSTALLATION MANUAL

COVER-CK-20A 2/1/01, 10:34 AM3

1-1

English

This manual provides the procedures of installation to ensure a safe and good standard of operation for the air

conditioner unit.

Special adjustment may be necessary to suit local requirements.

Before using yourair conditioner, please read this instruction manual carefully and keep it for future reference.

INSTALLATIONMANUAL

CEILING CASSETTE SPLIT TYPE AIR CONDITIONER

MODEL

COOLING ONLY HEAT PUMP

CK20AR /ACK20AR / MCK020AR /YCK20AR

SL20BRK /ALC20BRK / MLC020BRK / YSL20BRK

CK25AR / ACK25AR / MCK025AR / YCK25AR

SL25BRK /ALC25BRK / MLC025BRK / YSL25BRK

CK30AR / ACK30AR / MCK030AR / YCK30AR

SL30CR /ALC30CR / MLC030CR / YSL30CR

CK40AR / ACK40AR / MCK040AR / YCK40AR

SL40CR /ALC40CR / MLC040CR / YSL40CR

CK50AR / ACK50AR / MCK050AR / YCK50AR

SL50CR /ALC50CR / MLC050CR / YSL50CR

CK20A / ACK20A / YCK20A

SL20B / ALC20B / YSL20B

CK25A / ACK25A / MCK025A / YCK25A

SL25B / ALC25B / MLC025B / YSL25B

CK30A / ACK30A / MCK030A / YCK30A

SL30C / ALC30C / MLC30C / YSL30C

CK40A / ACK40A / MCK040A / YCK40A

SL40C / ALC40C / MLC040C / YSL40C

CK50A / ACK50A / MCK050A / YCK50A

SL50C / ALC50C / MLC050C / YSL50C

Part No.:08019004666 IM-CKA-0400-1

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CONTENTS

- Safety Precautions page 02

- Installation Diagram page 03

- Outline And Dimensions page 04

- Installation of Indoor Unit page 5

- Installation Of Outdoor Unit page 09

- Refrigerant Piping Work page 9

- Electrical Wiring Connection page 10

- Vacuuming and Charging page 13

SAFETY PRECAUTIONS

Before installing the air conditioner unit, please read the following safety precautions carefully.

!Warning

• Installation and maintenance should be performed by qualified persons who are familiar with local code and

regulation, and experienced with this type of appliance.

• All field wiring must be installed in accordance with the national wiring regulation.

• Ensure that the rated voltage of the unit corresponds to that of the name plate before commencing wiring work

according to the wiring diagram.

• The unit must be GROUNDED to prevent possible hazard due to insulation failure.

• All electrical wiring must not touch the refrigerant piping or any moving parts of the fan motors.

• Confirm that the unit has been switched OFF before installing or servicing the unit.

IMPORTANT

DO NOT INSTALL OR USE THE AIR CONDITIONER UNIT IN A LAUNDRY ROOM.

- Accessory Parts page 13

- Indicator Lights page 14

- Overall Checking page 15

- Standard Operation Conditions page 15

- Auto Random Re-start Function page 15

- Service And Maintenance page 16

- Trouble Shooting page 16

!Caution

Please take note of the following important points when installing.

• Do not install the unit where leakage of flammable gas may occur.

If gas leaks and accumulates around the unit, it may cause fire ignition.

• Ensure that the drainage piping is connected properly.

If the drainage piping is not connected properly, it may cause water leakage which will dampen the

furniture.

• Do not overcharge the unit.

This unit is factory pre-charged. Overcharge will cause over-current or damage to the compressor.

• Ensure that the units panel is closed after service or installation.

Unsecured panels will cause the unit to operate noisily.

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English

INDOOR UNIT

OUTDOOR UNIT

Drain Hose

Front Panel

Air Filter

(behind the grille)

Air Discharge Louver

IR Receiver

LED Light

Air Intake Grille

Refrigerant Piping

Air Intake

Air Discharge

Wireless Remote Control

Air Discharge Louver

Remote Control

INSTALLATIONDIAGRAM

OUTDOOR UNIT

Drain Hose

Front Panel

Air Filter

(behind the grille)

Air Discharge Louver

Air Intake Grille

Air Discharge Louver

Refrigerant Piping

Air Intake

Air Discharge

Remote Control

Wired Remote Control

Air Intake

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OUTLINEAND DIMENSIONS

MODEL A B C D E F G H I J K

CK 20A/AR

CK 25A/AR

CK 30A/AR 820 820 363 335 28 930 930 642 622 555 555

CK 40A/AR

CK 50A/AR

Indoor Unit : CK20A / 25A / 30A / 40A / 50A& AR

• (With Wireless Remote Control & With Wired Remote Control)

Outdoor Unit : SL20B / 25B

MODEL A B C D E F G H I J K L

SL20B / 840 492 408 378 330 297 309 626 646 64 148.5 78.5

SL20BRK

SL25B /

SL25BRK

All dimensions are in mm.

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English

INSTALLATION OF THE INDOOR UNIT

Outdoor Unit : SL30C / 40C / 50C & CR

All dimensions are in mm.

141.5 746.5 141.5

1030.0

20.0

20.0 448.0

850.0

25.0

50.0

85.0

400.0

320.040.0 40.0

Preliminary Site Survey

• Electrical supply and installation is to conform to local authority's (e.g. National Electrical Board) codes and regulations.

• Voltage supply fluctuation must not exceed +10% of rated voltage. Electricity supply lines must be independent of

welding transformers which can cause high supply fluctuation.

• Ensure that the location is convenient for wiring, piping and drainage.

• The indoor unit must be installed in such that is free from any obstacles in path of cool air discharge and warm air return,

and must allow spreading of air throughout the room (near the center of the room).

• Must be provide clearance for the indoor unit from the wall and obstacles as shown in the figure.

!Caution Sharp edges and coil surfaces are potential locations which may cause

injury hazards. Avoid from being in contact with these places.

Max. 0.3 m

Min. 0.5 m

Min. 0.5 m Min. 0.5 m

Min. 1.0 m

Max. 3.0 m

Floor

Obstacle

Beam

•The installation place must be strong enough to support a load 4 times the indoor unit weight to avoid amplifying noise

and vibration.

•The installation place (hanging ceiling surface) must be assuring levelness and the height in the ceiling is 350mm or more.

•The indoor unit must be away from heat and steam sources (avoid installing it near an entrance).

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Unit Installation

•Measure and mark the position for the hanging rod. Drill

the hole for the angle nut on the ceiling and fix the

hanging rod.

•The installation template is extended according to

temperature and humidity. Check on dimensions in use.

•The dimensions of the installation template are the same

as those of the ceiling opening dimensions.

•Before ceiling laminating work is completed, be sure to

fit the installation template to the indoor unit.

NOTE

Be sure to discuss the ceiling drilling work with the

installers concerned.

620.5 mm (Hanging rod)

890.0 mm (Ceiling board opening)

Unit size 820.0 mm

790.0 mm (Hanging rod)

890.0 mm (Ceiling board opening)

Unit

•Confirm the pitch of the hanging rod is 790mm ×620.5mm sharp.

•Hold the unit and hang it on the hanging rod with the nut and washer.

•Adjust the unit height to 35.0 mm between the indoor unit bottom surface and the ceiling surface.

•Confirm with a level gauge that the unit is installed horizontally and tighten the nut and bolt to prevent unit falling

and vibration.

•Open the ceiling board along the outer edge of the paper installation template.

Unit Hanging

Indoor Unit

Ceiling

Board

35.0 mm

Piping

Direction

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English

Main Drain Pipe

Feed Water

Flexible Drain Hose

Drain Test

NOTE

This Indoor Unit uses a drain pump for condensed water drainage. Install the unit horizontally to prevent water

leakage or condensation around the air outlet.

•The front panel can only be fitted in one direction, follow the piping direction. (Follow piping arrow sticker on front

panel)

•Be sure to remove the installation template before installing the front panel.

Panel Installation

Open

Screw

•Open the air intake grille by pulling back the catchers and removing it together with filter from panel.

•Install the front frame panel onto the indoor unit by 4 screws and tighten it completely to prevent cool air leakage.

•Connect the LED wire and air swing wire to the indoor unit.

Indoor Unit

Pipe Clamp

GOOD BAD

Drain Piping Work •Drain pipe must be in downward gradient for smooth

drainage.

•Avoid installing the drain pipe in up and down slope to

prevent reversed water flow.

•During the drain pipe connection, be careful not to exert

extra force on the drain connector at indoor unit.

•The outside diameter of the drain connection at the

flexible drain hose is 20mm.

•Be sure to execute heat insulation (polyethylene foam

with thickness more than 8.0mm) on the drain piping to

avoid the condensed water dripping inside the room.

•Connect the main drain pipe to the flexible drain hose.

•Feed water from flexible drain hose to check the piping

for leakage.

•When the test is completed, connect the flexible drain

hose to the drain connector on the indoor unit.

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Indoor Unit

Cool

Air

Ceiling Board

Panel

Air Leak

Good Installation Bad Installation

Air intake grille installation

•Before installing the air intake grille, be sure to fix

the ionizer filter to the air filter.

•Install the air intake grille together with the air filter

to the front panel.

•The grille can be fit in any direction, when selecting

direction, the ceiling design and grille operability

should be considered.

•If the unit comes with ionizer filter (optional item),

make sure to fix the ionizer filter to the air filter before

installing the air intake grille.

•Fix the ionizer filter to the air filter with the black

side on top and white side at bottom.

•Carefully clip on the ionizer filter frame.

Frame

(Optional Item)

Ionizer Filter

(Optional Item)

Filter

(Standard)

From

Front

Panel

LED Wire

Air Swing

Wire

Control Box

NOTE

Install the front frame panel firmly to prevent cool air leakage which will cause condensation and water dripping.

Cool

Air Air Leak

Ceiling Board

Panel

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English

INSTALLATION OF OUTDOOR UNIT

REFRIGERANT PIPING WORK

Refrigerant piping is important in particular. Refrigeration cycle of the split air conditioner is realized

by the perfect piping work.

Piping length and elevation

If the piping is too long, both the capacity and reliability of unit will drop. As the number of bends increase, resistance to

flow of refrigerant system increases, thus lowering cooling capacity and as a result the compressor may become defective.

Always choose the shortest path and follow the recommendation as tabulated below.

MODEL INDOOR CK20A/AR CK25A/AR CK30A/AR CK40A/AR CK50A/AR

OUTDOOR SL20B/BRK SL25B/BRK SL30C/CR SL40C/CR SL50C/CR

MAX. LENGTH (M) 15 m 15 m 20 m 20 m 20 m

MAX. ELEVATION (M) 8 m 8 m 10 m 10 m 10 m

MAX. NO. OF BENDS 10 10 10 10 10

LIQUID PIPE SIZE 1/4”3/8”3/8”3/8”3/8”

GAS PIPE SIZE 5/8”5/8”5/8”3/4”3/4”

SL SERIES A B C D

MIN. DISTANCE (mm) 300 1000 300 500

MSS SERIES A B C

MIN. DISTANCE (mm) 500 1000 500

Preliminary site survey

•A place protected from rain, direct sunlight and well-ventilated wherever practicable.

•A place capable of bearing the weight of the outdoor unit and isolating noise and vibration.

•A place where there are no obstruction of air flow into or out the unit.

•Do not put any object which may become obstacle for the air flow into or out the outdoor unit.

•The location must not be susceptible to high concentration dust, oil, salt or sulfide gas.

Outdoor unit installation

•Install the outdoor unit firmly and horizontally. Maintain a space clearance from the obstruction as shown in below for

servicing and air ventilation.

AB CD

AB CC

CK20A(1-16)ENG 2/1/01, 10:15 AM9

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