McQuay M5MSY18BR User manual

Catalog M5MSY_(i)
Inverter-Y Multi Split
Models: M5MSY18BR
M5MSY20BR
M5MSY25BR
M5MSY30BR
Supercedes:
M5MSY-B-2011

M5MSY_(i) Table of Contents
Table of Contents
Nomenclature......................................................................................................................1
Indoor ............................................................................................................................1
Outdoor..........................................................................................................................1
Product Line-Up.............................................................................................................2
Application Information .....................................................................................................5
Operating Range ...........................................................................................................5
Refrigerant Circuit Diagrams .........................................................................................6
Installation Guideline .....................................................................................................7
Engineering & Physical Data...........................................................................................20
Performance Data.............................................................................................................26
Outline and Dimension ....................................................................................................29
Wiring Diagram .................................................................................................................34
Service and Maintenance.................................................................................................40
Troubleshooting ...............................................................................................................42
Exploded View and Part List ...........................................................................................50
“McQuay” is a registered trademark of McQuay International. All rights reserved.
© 2011 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 specifications at any time without notice.

Nomenclature M5MSY_(i)
1
Nomenclature
Indoor
Outdoor
M 5 WM Y 10 L R – A C B D D
Brand
M: McQuay
Refrigerant
5: R410A
Product Type
WM: Wall Mounted
CK : Ceiling Cassette
CC: Ceiling Concealed
CM: Ceiling Mounted
Size
10 : § 10,000 Btu/h
15 : §
15,000 Btu/h
20 : §
20,000 Btu/h
25 : § 20,000 Btu/h
Inverter System Type
Y: Y Series
Product series
L: L series J: J series
C: C Series E: E series
Model
“ ”: Cooling Only
R: Heat Pump
Product Specification
Variation
D: Fourth Issue
Grille
D: Grille D
Type of Air Filte
r
B: Bio Filter
Market Region
C: Ex
p
ort with CE Markin
g
Electrical Characteristics
A : 50Hz / 1Ph / 220-240V
F : 50Hz / 3Ph / 380-415V
M5 MS Y 18 B R – A C D O A
Brand
M: McQuay
Product Type
MS: Multi Split Condensing Unit
Size
Product series
B: B Series
Refrigerant
5: R410A
Inverter System Type
Y: Y Series
Model
“ ”: Cooling Only
R: Heat Pump
Electrical Characteristics
A : 50Hz / 1Ph / 220-240V
F : 50Hz / 3Ph / 380-415V
Product Specification
Variation
A: First Issue
Specifications Variation
O: Standard Unit
Compresso
r
D: Daikin Com
p
resso
r
Market Region
C: Ex
p
ort with CE Markin
g
18 : § 18,000 Btu/h
20 : § 20,000 Btu/h
25 : §
25,000 Btu/h
30 : §
30,000 Btu/h

2
M5MSY_(i) Nomenclature
Product Line-Up
Indoor Unit
M5WMY-L Series/J Series
M5WMY
Nomenclature
Classification
Handset PCB Air Purification Marking Others
GS01 W_2_03A Saranet Filter Bio Antibody Filter Titanium Apatite Filter CE Auto Restart
HEATPUMP
10LR ACBDD X X X X X X X
15LR ACBDD X X X X X X X
10JR ACLAD X X X X X
15JR ACLAD X X X X X
20JR ACLTC X X X X X
Indoor Unit
M5CKY-C Series
M5CKY
Nomenclature
Classification
Handset PCB Air Purification 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

3
Nomenclature M5MSY_(i)
Indoor Unit
M5CCY-C Series
M5CCY
Nomenclature
Classification
Handset PCB Air Purification Marking Others
Netware 3C C_2_01A_M Saranet Filter Negative Ionizer Nano Technology Air Filtration CE Auto Restart
HEAT- PUMP
10CR ACPA X X X X X
15CR ACPA X X X X X
20CR ACPA X X X X X
Indoor Unit
M5CMY-E Series
M5CMY
Nomenclature
Classification
Handset PCB Air Purification Marking Others
GS01 C_2_01A_M Saranet Filter Negative Ionizer Nano Technology Air Filtration CE Auto Restart
HEAT- PUMP
15ER ACAA X X X X X
20ER ACAA X X X X X

4
M5MSY_(i) Nomenclature
Outdoor Unit
M5MSY-BR
M5MSY
Nomenclature
Classification
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
18BR ACDOA XX XXX
20BR ACDOA XX XXX
25BR ACDOA XX XXX
30BR ACDOA XX XXX
* Remark : M5MSY18BR is not recommended to couple with M5WMY10/15 JR (for Wall Mounted series).
M5MSY18BR is recommended to couple with M5WMY10/15 LR (for Wall Mounted series).

5
Application Information M5MSY_(i)
Application Information
Operating Range
Ensure the operating temperature is in allowable range.
Heatpump - M5MSY20/25/30BR
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
Heating
Outdoor temp. (°CWB)
Indoor temp. (°CDB)
-16
15 20 27
18
10
Indoor temp. (°CWB)
Cooling
Heatpump - M5MSY18BR

6
M5MSY_(i) Application Information
Refrigerant Circuit Diagrams
Model: M5MSY18BR
M5MSY20BR
Model: M5MSY25BR
M5MSY30BR

7
Application Information M5MSY_(i)
Installation Guideline
Installation of Outdoor Unit
• The outdoor unit must be installed in such a way, so as to prevent short circuit of the hot discharged air or
obstruction to the smooth air flow. Please follow the installation clearance shown in the figures below. Select
the coolest possible place where intake air temperature is not greater than the outside air temperature
(maximum 45°C/113°F)
• Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airflow, follow the installation
guidelines below.
• For any of the below installation patterns, the wall height on the exhaust side should be 1200mm or less.
More than 100
Wall facing two sidesWall facing one side
Wall facing three sides
More than 350
More than 50 More than 50
Top View
Top View
Side View
More
than 100
More than 350
More than 100
More than 350
More than 50
Unit : mm
1200
or less
• There are 2 holes on the base of Outdoor Unit for
condensed water to flow out. Insert the drain elbow
to one of the holes.
• To install the drain elbow, first insert one portion
of the hook to the base (portion A), then pull the
drain elbow 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 firmly.
• 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.
PLEASE REMOVE
ACCESS PANEL &
PLASTIC VALVE
COVER WHEN
CONNECTING
THE PIPING AND
CONNECTING
CORD.
PUSH & PULL UP
A
DRAIN
ELBOW
Plug
BASE
DRAIN
ELBOW
• Before installing the piping and connecting cord, please remove the access panel and plastic valve cover for
easy access. Refer to figures shown below.

8
M5MSY_(i) Application Information
Installation Diagram
Wall Mounted
Indoor Unit
Air filter M4 x 12L
Air-Purifying Filter with
bacteriostatic virustatic function (2)
Front panel
30mm or more from ceiling
Outdoor Unit
50mm or more from walls
(on both sides)
Air filter
Air-Purifying Filter with
bacteriostatic virustatic
function
Filter frame
Tab
Caulk pipe
hole gap
with putty.
Cut thermal insulation
pipe to an appropriate
length and wrap it with
tape, making sure that no
gap is left in the insulation
pipe's cut line.
Wrap the insulation pipe with
the finishing tape from bottom
to top.
Service lid
Opening service lid
Service lid is opening/closing
type.
Opening method
1) Remove the service lid
screws.
2) Pull out the service lid
diagonally down in
the direction of the arrow.
1) Pull down.
250mm from wall
Caution
Before installing the unit, ensure that the power supply matches the power requirement of the air conditioner.s
Installation of Indoor Unit
Service Space
Install the indoor unit at a location with the following requirements
• Location is suitable for wiring, piping and drainage.
• No obstruction of air flow into and out of unit where cooler air can be evenly distributed.
• Ensure that air discharge is not short circuited with air intake.
• Ensure that wall is sufficiently strong, rigid, flat, perpendicular and vibration free.
• Where air filter cassette can be slided in or out easily.
• Where there is no danger of flammable gases.
• Where there is no direct sunlight on unit.
min. 50
(Space for
maintenance)
Air flow
(Indoor)
min. 50
(Space for
maintenance)
03.nim
rofecapS(
)ecnamrofrep
Required space