Mcquay M5WM10 user guide manual

MWM - G - 2009

Wall Mounted Split Systems

Models:

MWM007G/GR
MWM009G/GR
MWM010G/GR
MWM015G/GR
MWM020G/GR
MWM025G/GR
MWM301/301R

M5WM007G/GR
M5WM009G/GR
M5WM010G/GR
M5WM015G/GR
M5WM020G/GR
M5WM025G/GR
M5WM311/301R

Catalog

Catalog

MWM - G - 2007

Wall Mounted Split Systems

Catalog

MWM - G2 - 2010

Models: MWM 07G2 M5WM 07G2/G2R
MWM 09G2/G2R M5WM 09G2/G2R

MWM 10G2/G2R M5WM 10G2/G2R
MWM 152G/G2R M5WM 15G2/G2R
MWM 20G2/G2R M5WM 20G2/G2R
MWM 25G2/G2R M5WM 25G2/G2R
MWM 030F/FR M5WM 031F/030FR

MWM-G2-2010 Table of Contents

Contents

Nomenclature......................................................................................................................1

Indoor Unit .....................................................................................................................1

Outdoor Unit ..................................................................................................................2

Product Line-Up ..................................................................................................................3

Features...............................................................................................................................9

Application Information ...................................................................................................10

Operating Range .........................................................................................................10

Refrigerant Circuit Diagram .........................................................................................11

Controller ....................................................................................................................19

Installation Guideline ...................................................................................................20

Sound Data ........................................................................................................................34

Sound Pressure Level .................................................................................................34

NC Curve .....................................................................................................................35

Engineering & Physical Data ........................................................................................... 38

General Data ...............................................................................................................38

Components Data ........................................................................................................55

Performance Data ............................................................................................................. 72

Calculation Steps .........................................................................................................72

Performance Data .......................................................................................................78

Outline and Dimension ..................................................................................................133

Electrical Data ................................................................................................................. 138

Wiring Diagram ...............................................................................................................146

Service and Maintenance...............................................................................................159

Troubleshooting .............................................................................................................161

Exploded View and Part List .........................................................................................171

“McQuay” is a registered trademark of McQuay International. All rights reserved.

© 2010 McQuay International. All rights reserved throughout the world.

Bulletin illustrations cover the general appearance of McQuay International products at the time of publication.

We reserve the right to change design and construction specifi cations at any time without notice.

2

Nomenclature MWM-G2-2010

Nomenclature

Indoor Unit

M WM 10 G2 R

Brand

M

Refrigerant

“ “

4

5

Model Name

WM : Wall Mounted

: McQuay

: Omitted if R22

: R407C

: R410A

Capacity Index

10

20

Chassis

G2

Model Type

“ “

R

: 10,000 Btu/h

: 20,000 Btu/h

: G + Series

: Omitted if cooling only

: Heatpump

1

MWM-G2-2010 Nomenclature

Outdoor Unit

M 5 LC 010 C R

Brand

M

Refrigerant

“ “

4

5

Model Name

LC : Single Split Condensing Unit

Capacity Index

010

020

: McQuay

: Omitted if R22

: R407C

: R410A

: 10,000 Btu/h

: 20,000 Btu/h

Chassis

C

Model Type

“ “

R

: C Series

: Omitted if cooling only

: Heatpump

2

Product Line-Up MWM-G2-2010

Product Line-Up

Indoor Unit
MWM-G2 Series

Classication

PCB

MWM

Nomenclature

L2.0

07G2 ACICE X X X X X X X

09G2 ACICE X X X X X X X

10G2 ACICE X X X X X X X

15G2 ACICE X X X X X X X

20G2 ACICE X X X X X X X

COOLING

25G2 ACICE X X X X X X X

030F AFBF X X X X X X

Handset

G17

Ionizer Filter

Saranet Filter

Air Purication

Negative Ionizer

Nano Technology Air Filteration

C

Grille

CE

Marking

Others

Orice Kit

3

09G2R ACICE X X X X X X X

10G2R ACICE X X X X X X X

15G2R ACICE X X X X X X X

20G2R ACICE X X X X X X X

HEATPUMP

25G2R ACICE X X X X X X X

030FR AFAE X X X X X

MWM-G2-2010 Product Line-Up

Indoor Unit
M5WM-G2 Series

Classication

PCB

M5WM

Nomenclature

L2.0

07G2 ACICE X X X X X X X

09G2 ACICE X X X X X X X

10G2 ACICE X X X X X X X

15G2 ACICE X X X X X X X

20G2 ACICE X X X X X X X

COOLING

25G2 ACICE X X X X X X X

031F AFCE X X X X X

Handset

G17

Filter

Ionizer

Saranet Filter

Air Purication

Negative Ionizer

Nano Technology Air Filteration

C

Grille

Marking

CE

Others

07G2R ACICE X X X X X X X

09G2R ACICE X X X X X X X

10G2R ACICE X X X X X X X

15G2R ACICE X X X X X X X

20G2R ACICE X X X X X X X

HEATPUMP

25G2R ACICE X X X X X X X

030FR AFCE X X X X X

4

Product Line-Up MWM-G2-2010

Outdoor Unit
MLC-C Series

Classication

MLC

007C

009C

010C

015C

018C

COOLING

020C

025C

028C

030C

Nomenclature

ACPOE

ACPIE

ACPOD

ACPID

ACPOB

ACPIB

ACPOD

ACPID

ACPOD

ACPID

ACPBD

ACPOD

ACPID

ACPBD

ACPHB

ACPOD

ACPID

ACPBD

ACPHB

ACHOB

ACHIB

ACHBB

AFGE

PCB

Refrigerant Control

Cap Tube

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X X

X X X X

X X X X

X X X X X

X X X X X X

X X X X

X X X X

X X X X X

X X X X X X

FIN

Gold Coated

X X X

Bare

X X X

X X X X

X X X X X X

Safety Devices

Contactor

High Pressure Switch

Low Pressure Switch

Scroll

Compressor

Rotary

Marking

CE

Others

Back Panel Grille

Special

Super Tropical Specication

5

MWM-G2-2010 Product Line-Up

Outdoor Unit
MLC-C Series

Classication

MLC

009CR

010CR

015CR

018CR

020CR

HEATPUMP

025CR

028CR

030CR

Nomenclature

ACPOD

ACPID

ACPOB

ACPIB

ACPOA

ACPIA

ACPOD

ACPID

ACPOD

ACPID

ACPHB

ACPOD

ACPID

ACHIB

ACHOB

ACHIB

AFFB

PCB

Refrigerant Control

Cap Tube

TXV

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X X

X X X X

X X X X

X X X X X

X X X X

X X X X

X X X X X X X

FIN

Gold Coated

Bare

Safety Devices

Contactor

High Prerssure Switch

Low Pressure Switch

Scroll

Compressor

Rotary

Marking

CE

Others

Drain Elbow

Special

Super Tropical Specication

6

Product Line-Up MWM-G2-2010

Outdoor Unit
M5LC-C Series

Classication

M5LC

007C

009C

015C

020C

COOLING

025C

028C

Nomenclature

ACPOE

ACPIE

ACPOB

ACPIB

ACPOC

ACPIC

ACPOC

ACPIC

ACPGC

FCPOC

FCPGC

ACPOC

ACPIC

ACPGC

FCPOC

FCPGC

ACPOA

ACPIA

ACPGA

FCPOA

FCPGA

PCB

Refrigerant Control

Cap Tube

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X X

X X X X X X

X X X X X X X

X X X X

X X X X

X X X X X

X X X X X X

X X X X X X X

X X X X

X X X X

X X X X X

X X X X X X

X X X X X X X

FIN

Gold Coated

Bare

Safety Devices

Contactor

Phase Sequencer

Compressor

Rotary

Marking

CE

Others

Low Ambient Kit

Drain Elbow

Special

7

MWM-G2-2010 Product Line-Up

Outdoor Unit
M5LC-C Series

Classication

M5LC

007CR

010CR

015CR

020CR

HEATPUMP

025CR

028CR

Nomenclature

ACPOE

ACPIE

ACPOB

ACPIB

ACPOC

ACPIC

ACPOC

ACPIC

FCPOC

ACPOC

ACPIC

FCPOC

ACPOA

ACPIA

FCPOA

PCB

Refrigerant Control

Cap Tube

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X

X X X X X X X

X X X X

X X X X

X X X X X X X

X X X X

X X X X

X X X X X X X

FIN

Gold Coated

Bare

Safety Devices

Contactor

Phase Sequencer

Compressor

Rotary

Marking

CE

Others

Low Ambient Kit

Drain Elbow

Special

8

Features MWM-G2-2010

Features

Excellent Air Distribution

Air discharge direction can be adjusted in four directions, manually or automatically by using LCD remote
control. The new double louver design with automatic air swing function fully optimizes the room comfort by

distributing the air evenly to the room. The unique skew fan design with larger diameter creates better air ow

to the operating environment.

Self Diagnosis

This function is able to detect and to disgnose any faults occuring in the system by blinking of the LED lights.
Simplify and ease for troubleshooting.

Facilitated Maintenance Ensure

The new design of air discharge housing where by the fan blower can be easily accessed by just losing

two screws on the unit to provides a exible, faster and easier way to clean up the fan blower and ionizer.

Maintenance is easy for electrical components, piping and wiring as these are all easily accessible by merely
removing front plastic panel.

High Efciency Heat Exchanger

The compact design of the 3-fold structure heat exchanger provides a large surface are for better and efcient
heat exchange. The unique Hydrophilic slit n has greatly improved the air ow and the contact surfaces with

the air thus to boost the cooling capacity.

Wireless Remote Controller

The compact LCD transmitter is able to operate the air conditioner unit within the distance of 9 meters.

•
Fan motor speed can be set at low / medium / high or automatic.

•
Sleep mode auto control will gradually increase or decrease the setting temperature to provide a

•
comfortable surrounding for sleeping.

Air ow direction can be controlled automatically.

•
Room temperature is controlled by electronic thermostat.

•
The real time timer allows the air conditioner to be switched on and off automatically based on user

•
settings.
Turbo mode function is available to enables the required set temperature to be achieved in a short time

•
Personalized setting allows user to preset and store 2 groups of personal settings (including timer setting)

•
in the handset.
Auto random restart is a function where by when there is power failure occurred during operation, the unit

•
will automatically restart as the last setting condition once the power is resumed.

Rotary Compressors

The ever popular rotary compressor is more energy efcient and has a higher output to weight ratio.

9

MWM-G2-2010 Application Information

Note :

Standard operating range.

With Low ambient kit. (Optional item)
Please refer to local dealer for unit of this specification.

Indoor temp. (°CDB)

Cooling

Outdoor temp. (°CDB)

Indoor temp. (°CWB)

Outdoor temp. (°CDB)

Indoor temp. (°CWB)

Heating

Outdoor temp. (°CWB)

-9

16 21

6

30

-5

19

35

14

46

23

Standard

point

Low ambient kit

18

-5

19

35

14

46

23

Low ambient kit

Standard

point

Standard

point

! Caution :

The use of your air conditioner
outside the range of working
temperature and humidity can
result in serious failure.

Application Information

Operating Range

Ensure the operating temperature is in allowable range.

Cooling only

Heatpump

10

Application Information MWM-G2-2010

Refrigerant Circuit Diagram

Model: MWM07G2 - MLC007C M5WM07G2 - M5LC007C
MWM09G2 - MLC009C M5WM09G2 - M5LC009C
MWM10G2 - MLC010C M5WM10G2 - M5LC010C
MWM15G2 - MLC015C M5WM15G2 - M5LC015C

Model: MWM20G2 - MLC018C M5WM20G2 - M5LC020C
MWM20G2 - MLC020C M5WM25G2 - M5LC025C

11

MWM-G2-2010 Application Information

Model: MWM25G2 - MLC025C M5WM031F - M5LC028C

Model: MWM030F - MLC028C

12

Application Information MWM-G2-2010

Model: MWM030F – MLC030C

13

MWM-G2-2010 Application Information

Model: M5WM20/25G2 - M5LC020/025C (With Low Ambient Kit)
M5WM030F - M5LC028C (With Low Ambient Kit)

14

Application Information MWM-G2-2010

Model: MWM09G2R - MLC009CR M5WM07G2R - M5LC007CR

Model: MWM10G2R - MLC010CR M5WM09G2R - M5LC010CR

M5WM10G2R - M5LC010CR

15

MWM-G2-2010 Application Information

Model: MWM15G2R - MLC015CR M5WM15G2R - M5LC015CR

Model: MWM20G2R - MLC020CR M5WM20G2R - M5LC020CR

M5WM25G2R - M5LC025CR

16

Application Information MWM-G2-2010

Model: MWM030FR - MLC028CR M5WM030FR - M5LC028CR

Model: MWM25G2R - MLC025CR

17

MWM-G2-2010 Application Information

Model: MWM030FR – MLC030CR

18

Application Information MWM-G2-2010

MODE

P1 P2

SLEEP

SET

CANCEL

ON TIMER

SET

CANCEL

OFF TIMER

6

12

15

11

13

14

7

4

3

10

9

2

1

8

5

Controller

G17

Operation Guide

1 Transmission Source

The source where the signal will be transmitted.•

Signal Transmission Indication

2

Blink to conrm that the last setting has been transmitted

•
to the unit.

Temperature Setting

3

To set the desired room temperature, press the v or V

•
button to increase orde crease the set temperature.
The temperature setting range is from 16°C to 30°C

•
(optional setting 20°C to 30°C).

Personalize Setting

4

Press and hold for 3s, then will blink. Press again to

•
cycle between and
Set the desire setting, then leave the hand set for 4s

•
without pressing any key and it will save the setting into the
programme.
Press once to activate the P1 setting, press again to

•
cycle between P1 and P2.
Press any key to deactivate the personalize setting.

•

5

Automatic Air Swing (optional)

Press the SWING button to activate the automatic air

•
swing function.

To distribute the air to a specic direction, press the

•
SWING button and wait until the louver move to the
desired direction and press the button once again.

Silent Function

6

Press for quiet operation.

•
Fan speed turn to minimum speed.

•
Press again to deactivate the function.

•

Sleep Mode Setting

7

Press the SLEEP button will activate the sleep mode

•
function. This function is available under COOL, HEAT and
AUTO mode.
When the unit is operating under cooling mode, the set

•
temperature is increased by 0.5°C after 30 minutes, 1°C
after an hour, and 2°C after 2 hours.
When the unit is operating under heating mode, the set

•
temperature is decreased by 1°C after 30 minutes, 2°C
after an hour, and 3°C after 2 hours.

19

8 Operating Mode

Press the MODE button to select the type of operating

•
mode.
For cooling only unit, the available modes are: COOL (),

•
DRY () and FAN ( ).

9

Fan Speed Selection

Press the button continuously will toggle the fan speed

•
in the following order:
Low p Med p High p Auto
Stop pressing when the desired fan speed appears on the

•
display screen.

10

“ON/OFF” Button

Press one to start the air conditioner unit.

•
Press again to stop the unit.

•

11

Timer Cancel

Press the TIMER CANCEL button to cancel the on timer

•
setting.

12

OFF Timer Setting

Press the OFF TIMER button will activate the off timer

•
function.
Set the desired off time by pressing the OFF TIMER button

•
continuously.

13

ON Timer Setting

Press the ON TIMER button will activate the on timer

•
function.
Set the desired on time by pressing the ON TIMER

•
button continuously. If the timer is set to 7.30am, the air
conditioner will turn on at 7.30am sharp.

14

Turbo Function

Press for fast cooling.

•
Fan speed turn to maximum speed.

•
Press again to deactivate the function.

•

Clock Time Setting

15

Press and hold to set the clock time.•

MWM-G2-2010 Application Information

Installation Guideline

Safety Precautions

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.

•

Disconnect from the main power supply before
servicing the air conditioner unit.

•

DO NOT pull out the power cord when the power is
ON. This may cause serious electrical shocks which
may result in fire hazards.

•

Keep the indoor and outdoor units, power cable and
transmission wiring, at least 1m from TVs and radios,
to prevent distorted pictures and static. {Depending on
the type and source of the electrical waves, static may
be heard even when more than 1m away}.

CAUTION

Please take note of the following important points
when installing.

Do not install the unit where leakage of ammable

•
gas may occur.

If gas leaks and accumulates around the unit, it

may cause re ignition.

Ensure that 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 unit’s panel is closed after service

•
or installation.

Unsecured panels will cause the unit to operate

noisily.

Sharp edges and coil surfaces are potential

•
locations which may cause injury hazards. Avoid
from being in contact with these places.
Before turning off the power supply, set the remote

•
controller’s ON/OFF switch to the “OFF” position
to prevent the nuisance tripping of the unit. If this is

not done, the unit’s fans will start turning automatically
when power resumes, posing a hazard to service
personnel or the user.

Do not operate any heating apparatus too close to the

•
air conditioner unit. This may cause the plastic panel to

melt or deform as a result of the excessive heat.

Ensure the color of wires of the outdoor unit and

•
the terminal markings are same to the indoors
respectively.
IMPORTANT

•
AIR CONDITIONER UNIT IN A LAUNDRY ROOM.

•
Do not use joined and twisted wires for incoming

•
power supply.

: DO NOT INSTALL OR USE THE

NOTICE

Disposal requirements

Your air conditioning product is marked with this symbol. This means that electrical and electronic products
shall not be mixed with unsorted household waste.
Do not try to dismantle the system yourself: the dismantling of the air conditioning system, treatment of

the refrigerant, of oil and of other parts must be done by a qualied installer in accordance with relevant

local and national legislation. Air conditioners must be treated at a specialized treatment facility for re-use,
recycling and recovery. By ensuring this product is disposed of correctly, you will help to prevent potential
negative consequences for the environment and human health. Please contact the installer or local authority
for more information.
Batteries must be removed from the remote controller and disposed of separately in accordance with relevant
local and national legislation.

20

Application Information MWM-G2-2010

Indoor Unit

Outdoor Unit

Refrigerant Piping

Air Discharge
Nozzle

Air Intake

Drain Hose

Signal Receiver

Indicator Light

Air Intake

Grille

Back Housing

ON/OFF Switch

Front Frame

Air Filter

Installation Diagram

Before installing the unit, ensure that the power supply matches the power requirement of the airconditioner.•

Caution

21

MWM-G2-2010 Application Information

Maintenance &
Servicing Space

Air Flow
Direction

50.0 mm

50.0 mm
mm0.05

Higher Than

Eye Level

Selection of Location and Space

Indoor Unit

Install the fan coil (indoor) unit at a location with the following requirements

Location is suitable for wiring, piping and drainage.

•

No obstruction of air ow into and out of unit where cooler air can be evenly distributed.(See g. 1)

•
Ensure that air discharge is not short circuited with air intake.

•

Ensure that wall is sufciently strong, rigid, at, perpendicular and vibration free.

•

Where air lter cassette can be slided in or out easily.

•

Where there is no danger of ammable gases.

•
Where there is no direct sunlight on unit.

•
Also to take into consideration a place for the installation of the Wireless LCD Remote Controller.

•

Do not install unit near the door waybecause excessive fresh air may causepanel condensation on the unit.•

Caution

22

Application Information MWM-G2-2010

Outdoor Unit

As condensing temperature rises, evaporating temperature rises and cooling capacity drops. In order to achieve

maximum cooling capacity, the location selected for outdoor unit should fulll the following requirements :

Install the condensing (outdoor) unit in a way such that hot air distributed by the outdoor condensing unit

•

cannot bedrawn in again (as in the case of short circuit of hot discharge air). Allow sufcient space for

maintenance around the unit.

•

Ensure that there is no obstruction of air ow into or out of the unit. Remove obstacles which block air

intake ordischarge.

•

The location must be well ventilated, so that the unit can draw in and distribute plenty of air thus lowering
the condensing temperature.

•

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

•

A place protected from direct sunlight. Otherwise use an awning for protection, if necessary.

•

The location must not be susceptible to dust or oil mist.

Installation Clearance

•

Outdoor units must be installed such that there is no short circuit of the hot discharge air or obstruction to

smooth airow. Select the coolest possible place where intake air should not be hotter than the outside

temperature (max. 45°C)

ALL MODELS A B C D

Minimum Distance 300 mm 1000 mm 300 mm 500 mm

CAUTION : If the condensing unit is operated in an atmosphere containing oils (including machine oils), salt (coastal area),

sulphide gas (near hot spring, oil renery plant), such substances may lead to failure of the unit.

Caution

If the condensing unit is operated in an atmosphere containing oils(including machine oils),salt(coastal area), sulphide

•

gas(near hot spring, oil renery plant), such substances may lead to failure of theunit.

23

MWM-G2-2010 Application Information

A

Installation of Outdoor Unit

Condensed Water Disposal of Outdoor Unit (Heat Pump Unit Only)

There are 2 holes on the base of outdoor unit for condensed water to ow out. Insert the drain elbow toone

•
of the holes.

To install the drain elbow, rst insert one portion of the hook to the base (portion A), then pull the

•
drainelbow in the direction shown by the arrow while inserting the other portion to the base. After

installation,check to ensure that the drain elbow clings to base rmly.

If the unit is installed in a snowy and chilly area, condensed water may freeze in the base. In such case,

•
please remove plug at the bottom of unit to smooth the drainage.

24

Application Information MWM-G2-2010

Drilling Holes and Mounting Installation Installation Plate

Caution

Please check the unit weight for each model. Always ensure that the wall is sufciently strong to withstandthe weight. If

•
not, it is necessary to reinforce the wall with plate, beams or pillars.

The unit cannot be directly xed onto the wall or the likes. In all cases, the installation plate provided MUST be used.

•

Paste the installation plan provided on the desired location on the wall and mark the holes location

•
accordingly.
Ensure that the minimum maintenance and servicing space at the top, left and right side of the unit

•
isreserved.
Ensure also the levelness of the installation plate.

•
Drill the screw mounting holes (minimum 4 screws are required).

•
Drill the pipe hole at the location as per plan. (This is only applicable for rear piping outlet installation).

•

Note: The hole should be drilled slightly lower at outdoor side as per gure below:--

Fix the installation plate rmly to wall, without tilting to left or right. Use a plumb line, if available.

•

Model DIMENSION “A”

MWM07/09G2/G2R

M5WM07/09G2/G2R

MWM10/15G2/G2R

M5WM10/15G2/G2R

350.0 mm

400.0 mm

MODEL

MWM20/25G2/G2R, M5WM20/25G2/G2R, MWM030F/030FR, M5WM031F/030FR

25

MWM-G2-2010 Application Information

Fixing method:-

•

WOODENFRAME WALL

REINFORCED CONCRETE BUILDING

NUT ANCHOR BOLT ANCHOR

Indoor Unit Preparation

•

The refrigerant piping can be routed to the unit in 5 direction, by using the cut outs in the unit casing.

(See g. 1)

Carefully bend the pipes to the required position to align with the hole. For right hand and rear side

•

drawout, hold the bottom of the piping and x direction before shaping it to the desired position
(See g. 2). The condensation drain hose should be taped to the pipes with vinyl tape. The electrical cable

can also betaped to the pipes.

Mounting Indoor Unit

Hook the indoor unit onto the upper portion of installation plate. (Engage the 2 hooks of rear top of the indoor
unit withthe upper edge of the installation plate). Ensure the hooks are properly seated on the installation plate
by moving in left and right.

Water Drainage Piping

The indoor drain pipe must be downward gradient for smooth drainage. Avoid situation as shown in gure

below.

26

Application Information MWM-G2-2010

Wiring

Electrical Connection

Wiring regulation on wire diameters differ from country to country. Please refer to your LOCAL

•

ELECTRICAL CODES for eld wiring rules. Be sure that installation comply with such rules and

regulations.

General Precautions

Ensure that the rated voltage of the unit corresponds to the name plate before carrying out proper wiring

•
according to the wiring diagram.
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.
The unit must be GROUNDED to prevent possible hazards due to insulation failures.

•

All wiring must be rmly connected.

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

•

The eld wires from the indoor unit must be clamped on the wire clamp as per shown in the gure.

•

Refrigerant Piping

Maximum pipe Length and Maximum Number of Bends

Always choose the shortest path for refrigerant piping and follow the recommendations as tabulated below:

Model

Data

Max. Length, L (m) 12 12 12 12 15 15 15

Max. Elevation, H (m) 5 5 5 5 8 8 8

Max. No. of Bends 10 10 10 10 10 10 10

Flare Connection

Cut the pipe stages by stages, advancing the blade of pipe cutter slowly.

•

Remove burr with the burr remover. Hold the aring end down to prevent burrs from dropping inside pipe.

•

MWM/
M5WM

07G2/G2R

MWM

09G2/G2R

MWM/

M5WM

10G2/G2R

MWM/

M5WM

15G2/G2R

MWM/

M5WM

20G2/G2R

MWM/

M5WM

25G2/G2R

M5WM

031F/030FR

MWM030F/

R

27

MWM-G2-2010 Application Information

Orifice Pipe

Liquid Pipe

The exact length of pipe protruding from the face of the are die is determined by the aring tool. The table

•
shows the use of an imperial die and riged die.

A(mm)

PIPE Ø, D (mm)

IMPERIAL DIE RIGED DIE

6.35 (1/4”) 1.3 0.7

9.52 (3/8”) 1.6 1

12.7 (1/2”) 1.9 1.3

15.88 (5/8”) 2.2 1.7

Fix the pipe rmly on the are die. Match the centers of both the are die and the aring punch, and tighten
aring punch fully.

INSTALLATION OF SEPARATE ORIFICE KIT AT OUTDOOR

i) Outdoor Unit Installation Space Is Wide Enough

Directly connect the “Female” nut of orice pipe to

•
the liquid pipe.

Flare the liquid pipe and connect it to the “Male”

•

joint of the orice pipe.

28