1

MFS

2

PAGE

1. CONTENTS 2

2. NOMENCLATURE 3

3. NAMES AND FUNCTION OF PART 4

4. TECHNICAL SPECIFICATION 5

5. OUTLINES AND DIMENSIONS 6

6. WIRING DIAGRAM 8

7. INSTALLATION (INDOOR) 9

CONTENTS

3

M F S 30

A

Generation

Capacity 30, 40, 50, 60

Standing Fan Coil

Floor

McQuay

Easy Maintenance The simple design concept has maintenance and servicing in mind. Access to the internal parts of the unit

can be from front or back of the unit by removing a few screws

Filter Rack The fan coil unit has a filter rack to hold the air filter. This ensure the air flow is clean and the filter is easily

accessible for maintenance and cleaning

Three Speed Motor The unit has 3-speed direct driven centrifugal fan and operate very silently to give whisper comfort condition. The speed of the fan can be adjusted through the electric controller. (See below).

Easy and Flexible Installation The easy is highly compact and therefore it is very easy to select a location to install the unit such that only small space is required.

Electric Controller

Electric Controller can display cool, dry and fan mode with auto, high, medium and low fan speed. The temperature settings range from 16 OC and 30 OC.

NOMENCLATURE

4

CONTROL PANEL

REMOTE CONTROL

AUTO mode

COOL mode

DRT mode

FAN mode

HEAT mode

SLEEP operation

SWING operation

NAMES AND FUNCTIONS OF PART

CLOCK Button Set desired Timed time

Fan Running Display Simulate the running

condition of ran

TIMER Button Select timed

starting or stopping

ON/OFF Button Start or stop

operation

SLEEP Button Set or cancel

sleep operation

TEMPERATURE SET Button

Set desired temperature

FAN SPEED Button

Set fan speed or indoor unit

SWING Button Set the flow in a fixed direction or

swing left

MODE Button Select the

operation mode

Clock button

Reset button

Batteries

ON/OFF button

Mode button

Swing button

Sleep button

Fan Speed button

Fan speed and sleep operation

display

Mode Display

Signal transmitting section

Set temperature display

Swing display

Time display

Temperature set button

On timer button

Off timer button

5

TECHNICAL SPECIFICATION

MODEL INDOOR UNIT MFS 30A MFS 40A MFS 50A MFS 60A

OUTDOOR UNIT MLC 30C MLC 40C MLC 50C MLC 61C

NOMINAL COOLING CAPACITY Btu/h 29,000 39,000 49,000 58,000

REFRIGERANT / CONTROL R22 / THERMAL EXPANSION VALVE

IND

OO

R

BLO

WER

& M

OTO

R

POWER SOURCE V/ph/Hz 240 / 1 / 50

TYPE CENTRIFUGAL / DIRECT DRIVEN

QUANTITY 1 1 1 1

NOMINAL AIR FLOW CFM 850 1,150 1,450 1,750

OUTLET VELOCITY m/s 3.1 4.2 5.3 6.4

MOTOR OUTPUT W 50 90 110 110

CAPACITOR SIZE f 3.5 6 5 5

RATED RUNNING CURRENT (EACH) Amps 0.85 1.3 1.6 1.6

FAN MOTOR POLES 4 Poles; IP55; Class B

EXTERNAL STATIC PRESSURE inWG 0.4 0.4 0.4 0.4

CO

IL

TUB

E MATERIAL COPPER

DIAMETER mm 9.52

THICKNESS mm 0.3

FIN

MATERIAL ALUMINIUM

THICKNESS mm/in 0.11

TUBE HEIGHT 29 36 36 36

ROWS

2 2 3 3

FIN PER INCH 14 14 14 16

FACE AREA m2 0.34 0.43 0.43 0.43

FIN LENGTH mm 480 480 480 480

AIR VELOCITY FPM 154 206 260 314

CASING MATERIAL PLASTIC FRONT PANEL

DIMENSION

HEIGHT mm 1900 1900 1900 1900

WIDTH mm 600 600 600 600

DEPTH mm 280 360 360 360

WEIGHT kg 42 65 65 65

CONTROL ROOM TEMPERATURE CAPILLARY TUBE

PIPING CONNECTION

GAS mm 15.88 19.05 19.05 19.05

LIQUID mm 9.52 9.52 9.52 12.7

CONDENSATE DRAIN SIZE FLEXIBLE HOSE

FILT

ER TYPE WASHABLE SARANET FILTER

SIZE WIDTH x HEIGHT mm 500 x 690

THICKNESS mm 5

QUANTITY 1

PACKING DIMENSION

HEIGHT mm 1970 1970

WIDTH mm 390 440

DEPTH mm 680 680

OU

TD

OO

R

CO

MP

TYPE SCROLL

POWER SOURCE V/Ph/Hz 220-240/1/50 415 / 3 /50

PROTECTION DEVICE OVERLOAD PROTECTION AND AUTO RESET HIGH/LOW PRESSURE SWITCH

FAN

FAN TYPE / DRIVE PROPELLER / DIRECT

BLADE MATERIAL ACRLY STYRENE RESIN

DIAMETER mm/in 609.6 / 24.0

POWER SOURCE V/Ph/Hz 240 / 1 / 50

CO

IL

TUB

E MATERIAL SEAMLESS COPPER

DIAMETER mm 9.52

THICKNESS mm 0.3

FIN

MATERIAL ALUMINIUM

THICKNESS mm 0.11

NUMBER x ROWS 1 x 1 1 x 2 1 x 2 1 x 3

FIN PER INCH 16 14 16 16

FACE AREA m2 0.89 0.85 0.87 1.23

DIMENSION

HEIGHT mm 850

WIDTH mm 1,030

DEPTH mm 400 460

WEIGHT kg 95 100 105 108

CASING MATERIAL ELECTRO-GALVANISED MILD STEEL

FINISH EPOXY POLYSTER POWDER COATING

SOUND PRESSURE LEVEL dBA 58 58 58 61

PIPING CONNECTION

GAS mm 15.88 19.05 19.05 19.05

LIQUID mm 9.52 9.52 9.52 12.7

6

INDOOR UNIT MODEL: MFS 30A

MODEL: MFS 40A/50A/60A

OUTLINES AND DIMENSIONS

R

R

7

OUTDOOR UNIT MODEL: MLC 30C, 40C, 50C, 61C

Model A B C D E F G H J K L M N P

MLC 30C/40C/50C 1030 850 400 390 414 827 72 196 91 488 448 141.5 746.5 82

MLC 61C 1030 850 480 390 414 827 72 196 91 488 448 141.5 746.5 82

8

INDOOR - OUTDOOR UNIT MODEL: MFS 30A/40A/50A/60A MLC 30C/40C/50C/61C

WIRING DIAGRAM

PP

LP

HP

CRANKCASE

HEATER

L2

COMPRESSOR

WH

ITE

RE

D

L1

BLA

CK

BLU

E

L3

BLA

CK

3L2

4T2

1L1

2T1

5L3

RED

6T3

R S T N

GR

EE

N/Y

ELLO

W

OUTDOOR UNIT

FAN

MOTOR

L N

U

V W

R S T N

NO

RED

A1

A2

NC

NC

GREEN/YELLOW

RE

D

WH

ITE

BLU

E

DT

FU -

-

-

-

-

- DISCHARGE TERMOSTAT

AUTO RESET HP SWITCH

AUTO RESET LP PRESSURE

PHASE PROTECTOR

CONTACTOR

FUSE

BLUE

BLUE

RED

WHITE

BLUE

RELAY

PP

C

COM

WHITE

BLACK

BLACK

HP

BLUE BLUE BLUE

LP

BLACK BLACK

GREEN/YELLOW

FU

7ARED

OPERATING

BOARD

8 4

TC

BROW

BROW

RE

D

BLU

E

1L1

2T1

(NO)

(NO)

BLA

CK

RED

RE

D

BLU

E

WH

ITE

WH

ITE

DT

C

9

Preliminary Site Survey a) Electrical supply and installation is to confirm to local authoritys (e.g. National Electricity Board) codes

and regulations. b) Voltage supply fluctuation must not exceed +/- 10% of rated voltage. Electricity supply line must be

independent of welding transformers which can cause supply fluctuation. c) Ensure that the location is convenient for wiring and piping.

Piping Do not use contaminated or damaged copper tubing. If piping, evaporator or condenser are exposed or had been opened for 15 seconds or more, vacuum and purge with field supplied refrigerant. Generally, do not remove plastic/rubber plugs/caps from fittings, tubing and coils until ready to connect suction or liquid line into fittings.

Operational Check After all electrical wiring is completed and system is charged with refrigerant, make sure unit is operating properly. Check that: a) Condenser fans are running, with warm air blowing off the condenser coil. b) Evaporator blowers are running and discharging cool air. c) Suction line inside condensing unit feels cool. d) Liquid line inside condensing unit feels warm.

Electrical Connection As wiring regulations differ from country to country, please refer to your LOCAL ELECTRICAL CODES for field wiring regulations and ensure that these are complied with. Besides, observe the following general precautions: a) Ensure that the rated voltage of the unit corresponds to that of the name plate before commencing

wiring work. b) Provide a power outlet to be used exclusively for each unit. A power supply disconnect and a circuit

breaker for over-current protection should be provided in the exclusive line. c) The unit must be GROUNDED to prevent possible hazard due to insulation failure. d) All wiring must be firmly connected. e) Electrical wiring must not touch the refrigerant piping, compressor and any moving parts of the fan

motors.

INSTALLATION (INDOOR)

10

Maximum Pipe Length And Maximum Number Of Bends When the pipe is too long, the required refrigerant quantity increases. Both the capacity and reliability drops as a result. As the number of bends increases, system piping resistance to the refrigerant flow increases, thus lowering the cooling capacity and the compressor may become defective. If the height difference between the evaporator and the condenser is excessive, the cooling capacity drops, the lubricating oil return is retarded, affecting the compressor efficiency adversely. Always choose the shortest piping path and follow the recommendations as shown below:

Model Max. Elevation,

m (ft)

Max. Length,

m (ft)

Max. Total Length, m (ft)

Max. of

Bends

MLC 30C 25 (82.0) 20 (65.6) 45 (147.6) 8

MLC 40C 25 (82.0) 20 (65.6) 45 (147.6) 8

MLC 50C 25 (82.0) 20 (65.6) 45 (147.6) 8

MLC 61C 25 (82.0) 20 (65.6) 45 (147.6) 8

COUTION: 1) Our guarantee on the performance of our air-conditioners is strictly revoked if the height, length

and/or the number of bends of the refrigerant piping system installed is beyond the limit above. 2) Bending must be carefully made so as not to crush the pipe. Use a pipe bender to bend a pipe as far

as possible.

Maximum Allowable Piping Length & Elevation Difference

11