McQuay M5MSY20BR User manual

Catalog

M5MSY - 2010

Inverter-Y Multi Split

Models: M5MSY20BR

M5MSY25BR

M5MSY30BR

Table of Contents M5MSY-2010

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.

Contents

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

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

Outdoor Unit ..................................................................................................................3

Product Line-Up .............................................................................................................4

Features.............................................................................................................................10

Application Information ................................................................................................... 11

Operating Range ......................................................................................................... 11

Refrigerant Circuit Diagram .........................................................................................12

Controller ....................................................................................................................14

Installation Guideline ...................................................................................................17

Engineering & Physical Data ...........................................................................................42

General Data - Heat pump ..........................................................................................42

Components Data - Heat pump ...................................................................................48

Performance Data .............................................................................................................54

Outline and Dimension ....................................................................................................57

Electrical Data ...................................................................................................................61

Wiring Diagram .................................................................................................................63

Service and Maintenance.................................................................................................70

Troubleshooting ...............................................................................................................72

Exploded View and Part List ...........................................................................................82

Nomenclature M5MSY-2010

1

Nomenclature

Indoor Unit

M 5 WM Y 10 J R

Brand

M : McQuay

Refrigerant

5 : R410A

Model Name

WM : Wall Mounted

Inverter System Type

Y : Y series

Capacity Index

10

15

20

25

: 10,000 Btu/h

: 15,000 Btu/h

: 20,000 Btu/h

: 25,000 Btu/h

Chassis

J : J Series

Model Type

“ “

R

: Omitted if cooling only

: Heatpump

M5MSY-2010 Nomenclature

2

Indoor Unit

M 5 CK Y 10 C R

Brand

M : McQuay

Refrigerant

5 : R410A

Model Name

CK

CC

CM

: Ceiling Cassette

: Ceiling Concealed

: Ceiling Mounted

Inverter System Type

Y : Y series

Capacity Index

10

15

20

25

: 10,000 Btu/h

: 15,000 Btu/h

: 20,000 Btu/h

: 25,000 Btu/h

Chassis

C

E

: C Series

: E Series

Model Type

“ “

R

: Omitted if cooling only

: Heatpump

Nomenclature M5MSY-2010

3

Outdoor Unit

M 5 MS Y 20 B R

Brand

M : McQuay

Refrigerant

5 : R410A

Model Name

MS : Multi Split Condensing Unit

Inverter System Type

Y : Y series

Capacity Index

20

25

30

: 20,000 Btu/h

: 25,000 Btu/h

: 30,000 Btu/h

Chassis

B : B Series

Model Type

“ “

R

: Omitted if cooling only

: Heatpump

4

M5MSY-2010 Product Line-Up

Product Line-Up

Indoor Unit

M5WMY-J Series

M5WMY

Nomenclature

Classiﬁ cation

Handset

PCB

Air Puriﬁ cation

Marking

Others

GS01

W_2_03A

Saranet Filter

Negative Ionizer

Nano Technology Air Filtration

CE

Auto Restart

HEATPUMP

10JR ACLTC X X X X X

15JR ACLTC X X X X X

20JR ACLTA X X X X X

25JR ACLTA X X X X X

5

Product Line-Up M5MSY-2010

Indoor Unit

M5CKY-C Series

M5CKY

Nomenclature

Classiﬁ cation

Handset

PCB

Air Puriﬁ cation

Marking

Others

GS01

C_2_01A_M

Saranet Filter

Negative Ionizer

Nano Technology Air Filtration

CE

Auto Restart

HEATPUMP

10CR ACOA X X X

15CR ACOA X X X

20CR ACOA X X X

PLCKYCR NGS01 X X X

6

M5MSY-2010 Product Line-Up

Indoor Unit

M5CKY-E Series

M5CKY

Nomenclature

Classiﬁ cation

Handset

PCB

Air Puriﬁ cation

Marking

Others

GS01

C_2_01A_M

Saranet Filter

Negative Ionizer

Nano Technology Air Filtration

CE

Auto Restart

HEATPUMP

20ER ACOA X X X

25ER ACOA X X X

PLCKYER NGS01 X X X

7

Product Line-Up M5MSY-2010

Indoor Unit

M5CCY-C Series

M5CCY

Nomenclature

Classiﬁ cation

Handset

PCB

Air Puriﬁ cation

Marking

Others

Netware 3C

C_2_01A_M

Saranet Filter

Negative Ionizer

Nano Technology Air Filtration

CE

Auto Restart

HEATPUMP

10CR ACPA X X X X X

15CR ACPA X X X X X

20CR ACPA X X X X X

25CR ACPA X X X X X

8

M5MSY-2010 Product Line-Up

Indoor Unit

M5CMY-E Series

M5CMY

Nomenclature

Classiﬁ cation

Handset

PCB

Air Puriﬁ cation

Marking

Others

GS01

C_2_01A_M

Saranet Filter

Negative Ionizer

Nano Technology Air Filtration

CE

Auto Restart

HEATPUMP

15ER ACAA X X X X X

20ER ACAA X X X X X

25ER ACAA X X X X X

9

Product Line-Up M5MSY-2010

Outdoor Unit

M5MSY-BR

M5MSY

Nomenclature

Classiﬁ cation

Refrigerant

Control

Fin

Safety Devices

Compressor

Marking

Others

Cap Tube

EXV

Gold coated

Blue coated

Bare

Contactor

HP

LP

DC Inverter Swing

CE

Drain Elbow

HEATPUMP

20BR ACDOA

XX XXX

25BR ACDOA

XX XXX

30BR ACDOA

XX XXX

10

M5MSY-2010 Features

Features

Self Diagnosis

The microprocessor provides the possibility to detect and diagnose any fault or malfunction that occurs in the

system. The error will be reﬂ ected by the blinking of the LED lights.

Advance Technology

Incorporating fuzzy logic control enables greater ﬂ exibility in system control handling to achieve

Powerful, efﬁ cient and economical operation.

Even room temperature control.

Constant and quiet compressor operation.

Enhanced system reliability and reduced maintenance costs.

On / Off Button on Indoor Unit

On/Off button is provided on the front panel of the unit. It can be used when the remote controller is missing or

if its battery has run out. (Note: This button can also be used for forced operation mode)

Wireless Remote Controller

The compact LCD transmitter is able to operate the air conditioner unit within the distance of 8 meters.

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

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

comfortable surrounding for sleeping.

Air ﬂ 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.

Higher Energy Savings

The inverter compressor is programmed to run at the optimum speed. This is controlled by input frequency that

varies according to the indoor load requirements.

Once the indoor set temperature is achieved, the input frequency supply to the compressor will be reduced.

Hence, less power is required to maintain the unit operation and this will consume less energy.

Improved Compressor Life Span

For this multi-split inverter system, once the unit is started, the compressor rotation speed is steadily ramp up

or down based on load requirement throughout the operation. This control method gives the compressor motor

a smooth operation. It helps to reduce the wear and tear of the compressor motor. In the long run, the life span

of compressor is increased.

Overheating Protection (for heat pump unit only)

In case the internal and/or the external temperature are too high, or the ﬁ lter is dirty and clogged up, the

refrigerant may be overheated. The compressor will reduce its running speed in order to lower the temperature

of heat exchanger. If the temperature is still very high, the compressor will stop.

•

11

Application Information M5MSY-2010

Application Information

Operating Range

Ensure the operating temperature is in allowable range.

Heatpump

Heating

Outdoor temp. (°CWB)

Indoor temp. (°CDB)

Cooling

Outdoor temp. (°CDB)

Indoor temp. (°CWB)

-16

15 20 27

18

Standard

point

Caution :

The use of your air conditioner

outside the range of working

temperature and humidity can result

in serious failure

.

0

46

43

12 2319

10

12

M5MSY-2010 Application Information

Refrigerant Circuit Diagram

Model: M5MSY20BR

13

Application Information M5MSY-2010

Refrigerant Circuit Diagram

Model: M5MSY25BR

M5MSY30BR

14

M5MSY-2010 Application Information

Controller

GS01

TURBO QUIET

SLEEP

ON OFF

MODE

TIMER

CANCEL

CLOCK

7

4

12

11

10

8

5

6

3

9

13

2

1

15

Application Information M5MSY-2010

1 Transmission source

The source where the signal will be transmitted.•

2 Signal transmission indication

Blink to conﬁ rm that the last setting has been transmitted

to the unit.

•

3 “ON/OFF” Button

Press once to start the air conditioner unit.

Press again to stop the unit.

•

4 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.

•

5 Operation mode

Press the MODE button to select the type of operating

mode.

For cooling only unit, the available modes are: COOL (

7

),

DRY (6) and FAN (

).

For heat pump unit, the available modes are: AUTO (U),

COOL (

7

), DRY (6), FAN ( ) and HEAT ( ).

The AUTO (U) mode is unavailable for chilled water

system.

•

6 Automatic air swing

Press the SWING

button to activate the automatic air

swing function.

To distribute the air to a speciﬁ c direction, press the

SWING button and wait until the louver move to the

desired direction and press the button once again.

Swing mode selection method (for CK-E model)

Press SWING (

) button for 4 seconds to enter ﬁ eld

setting mode. While in ﬁ eld setting mode, it will only show

SWING MODE ( ).

Press temperature and button to select SWING MODE ( )

rotation from Swing Mode 1 to Swing Mode 3.

There are 3 different SWING MODE, which are:

Swing mode 1 Swing mode 2 Swing mode 3

SWING MODE will not activate unless SWING is activated.

Swing is indicated by the logo:

If no mode changes within 4 seconds, unit will operate

according to the selected SWING MODE ( ).

•

7 Turbo function (model dependent)

Press for fast cooling or heating operation.

Fan speed turn to maximum speed.

Press again to deactivate the function.

Available under HEAT, COOL and DRY modes only.

Any change of fan speed will deactivate this function.

The Turbo function ( ) is unavailable for chilled water

system and remote control with SWING MODE ( )

function.

•

8 OFF timer setting

Press the TIMER OFF button will activate the off timer

function.

Set the desired off time by pressing the TIMER OFF button

continuously.

Press the CANCEL button to cancel the off timer setting.

•

9 Quiet function (model dependant)

Press

for quiet operation.

Fan speed turn to minimum speed.

Press again to deactivate the function.

Any change of fan speed will deactivate this function.

The Silent function ( ) is unavailable for chiller water

system.

•

10 Clock time setting

Press and hold

button to set the clock time.•

11 ON timer setting

Press the TIMER ON button will activate the on timer

function.

Set the desired on time by pressing the TIMER ON

button continuously. If the timer is set to 7.30am, the air

conditioner will turn on at 7.30am sharp.

Press the CANCEL button to cancel the on timer setting.

•

12 Sleep mode setting

Press the  button will activate the sleep mode function.

This is an energy

saving option. When

the unit is operating

under cooling mode,

the set temperature is

increased by 0.5°C

after the ﬁ rst half an

hour, another 0.5°C

after the second half an

hour and 1°C after the

following 1 hour.

When the unit is

operating under

heating mode, the set

temperature is decreased by 1°C after the ﬁ rst half an

hour, another 1°C after the second half an hour and 1°C

after the following 1 hour.

This function is available under COOL, HEAT and AUTO

mode.

•

13 Temperature setting

To set the desired room temperature, press the * or *

button to increase or decrease the set temperature.

The temperature setting range is from 16°C to 30°C

(Optional setting 20°C to 30°C).

Press both buttons S and T simultaneously to toggle from

°C to °F setting.

•

+2 C

+1 C

-1C

-2C

00.51 1.52

-3C

Operation Guide

16

M5MSY-2010 Application Information

Controller

Netware 3C

1 ON/OFF Button

Starting Operation:

When the unit is turned off, press the ON/OFF button.

The operation LED lights and the unit is turned on.

Stopping Operation:

When the unit is turned on, press the ON/OFF button. The

operation LED is extinguished and control are turned off.

•

2 SLEEP Button

Press SLEEP button to activate the sleep mode or energy

saving mode.

•

3 FAN Button

Press FAN button to select AUTO, HIGH, MEDIUM or LOW

fan speed.

•

4 MODE Button

Press the MODE button to switch operation from COOL,

HEAT, DRY, FAN.

Check the display to see in which mode the control is set.

•

5,6 ‘▲’ or ‘▼’ Set Temperature Button

Press the temperature button and set the temperature

of your choice. By pressing the ‘▲’ or ‘▼’ button once,

temperature changes by 1°C [or 1°F].

Temperature can be set within the range 16°C~30°C

(61°F~86°F)

During fan mode, temperature cannot be set.

If pressing ‘▲’ and ‘▼’ together, the unit of temperature will

change from °C to °F and vice-versa.

•

7 SWING button

Press SWING button to activate the air sweep function.•

8 ON TIMER Button

Enable/disable the Event 1, 2 and 3 ON TIMER setting

mode

•

9 OFF TIMER Button

Enable/disable the Event 1, 2 and 3 OFF TIMER setting

mode

•

10 Timer Active Button

These timers will not triggered if the timer is not active.

To activate the timers, press the TIMER ACTIVE key

unit “TIMER ACTIVE” appears on LCD. This symbol is to

indicate Event 1, Event 2 and/or Event 3 timers are active.

Pressing the same steps will deactivate the timers and

“TIMER ACTIVE” symbol will disappear.

Another method to cancel the timers setting is changed all

the hour setting of the timers to null one by one. When the

setting is null, the LCD display --:--, then this respective

timer will be disable.

•

11 CLOCK Button

Enable/disable the Real Time Clock (RTC) setting mode•

12 DAY Button

a) Select the day for RTC or timer setting

b) Enable/disable FAN Key lock

13 HOUR Button

a) Select the hour for RTC or timer settings

b) Set Override function for 1, 2 or 4 hours

14 MINUTE Button

a) Select the minute for RTC or timer settings

b) Enable/disable key lock

17

Application Information M5MSY-2010

Installation Guideline

Safety Precautions

WARNING

CAUTION

Installation and maintenance should be performed by qualiﬁ ed

persons who are familiar with local code and regulation, and

experienced with this type of appliance.

All ﬁ eld 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.

Conﬁ rm 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 ﬁ re 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}.

•

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 reignition.

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 : DO NOT INSTALL OR USE THE

AIR CONDITIONER UNIT IN A LAUNDRY ROOM.

Do not use joined and twisted wires for incoming

power supply.

•

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 qualied 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.

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