McQuay MWM-G2W User manual

Fan Coil Units
Models:
MWM-G2W MCM-DW MCM-CW/EW
MCK-AW/CW MCC-CW MDB-BW
Technical Manual
Engineered for exibility and performance.™
MFCU_(ii)
Supercedes: MFCU_(i)

MFCU_(ii) Table of Contents
Nomenclature...................................................................................................................... 1
Indoor
Product Line-Up
Application Information ..................................................................................................... 8
Operating Range
Installation Guideline
Sound data........................................................................................................................ 16
Sound Pressure Level
Fan Performance Chart.................................................................................................... 19
Engineering and Physical Data....................................................................................... 45
Performance Data............................................................................................................. 56
Unit Selection Procedure
Performance Chart
Outlines & Dimensions .................................................................................................. 108
Wiring Diagrams ............................................................................................................. 133
Service & Maintainance ................................................................................................. 141
Troubleshooting ............................................................................................................. 142
Table of Contents
Supersedes: MFCU_(i)
“McQuay” is a registered trademark of McQuay International. All rights reserved.
© 2012 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 specications at any time without notice.

Nomenclature MFCU_(ii)
1
Indoor
Nomenclature
Brand
M : McQuay Product Specification Variation
Type of ref. connection
X : Not applicable
Piping
H : 4 pipes system
Electrical
A : 220 - 240V/1Ph/50Hz
F : 380 - 415V/3Ph/50Hz
U : 220 - 240V/1Ph/50Hz/60Hz
Model Name
WM : Wall Mounted Split Type
CK : Ceiling Cassette Split Type
CM : Ceiling Exposed Split Type
CC : Ceiling Concealed Split Type
DB : Ducted Split Type
Series
G2 : G2 series
Capacity
10 : 9,500 Btu/hr
Model Type
W : Chilled Water Fan Coil Unit
M WM 010 G2 W – A X AB

MFCU_(ii) Nomenclature
2
Product Line-Up
MWM-GW
Marking
PCB W2_L Valve Application only Auto Air Swing
Turbo GS01 Cooling GS01 Heat Pump 1/2" BSP (female) brass adaptor
Left piping
Nanosilver + Nanovis filter
Ionizer Light Grey Chasis
Pure White Chasis
+
G2 silver coated facelift
Std Marking (CE)
MWM
007G2W
010G2W
015G2W
020G2W
025G2W
301W
Model Name
Nomenclature
Classification
Control Handset
Connection
Filter Panel
AXAL
AXAK
AXAL
AXAK
AXAL
AXAK
AXAL
AXAK
AXAL
AXAK
AXAE
AXAD
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
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

Nomenclature MFCU_(ii)
3
MCM-DW / MCM-CBW/EW
CONNECTION FILTER MARKING
UCW - W2.0
Valve / Valveless Application
Auto Air Swing
Without Controller GS01 Cooling GS01 Heat Pump Netware 3 (Cool/Heat) SLM3 Heat Pump 3/4" BHP (female) Union Saranet Filter Standard Marking (CE)
AXCE XXX X XXX
AXCF XXX XXXX
AXCG XXX XXX
AXCH XXX X XXX
AXCI XXX X XXX
AXCE XXX X XXX
AXCF XXX XXXX
AXCG XXX XXX
AXCH XXX X XXX
AXCI XXX X XXX
AXCE XXX X XXX
AXCF XXX XXXX
AXCG XXX XXX
AXCH XXX X XXX
AXCI XXX X XXX
AXCE XXX X XXX
AXCF XXX XXXX
AXCG XXX XXX
AXCH XXX X XXX
AXCI XXX X XXX
AXCE XXX X XXX
AXCF XXX XXXX
AXCG XXX XXX
AXCH XXX X XXX
AXCI XXX X XXX
UXBF X X X X X
UXBG X X X X X X
UXBH X X X X X X
UXBF X X X X X
UXBG X X X X X X
UXBH X X X X X X
UXBF X X X X X
UXBG X X X X X X
UXBH X X X X X X
AXAC XXX X XXX
AXAD XXX X XXX
AXAC XXX X XXX
AXAD XXX X XXX
AXAC XXX X XXX
AXAD XXX X XXX
MCM
025DW
030DW
040DW
050DW
MCM
007CBW
010CBW
015CBW
015EW
020EW
025EW
MODEL NAME
NOMENCLATURE
020DW
CLASSIFICATION
CONTROL HANDSET

MFCU_(ii) Nomenclature
4
MCK-AW/CW/AWH
MARKING
MCK-AWH
UCW - W2.0 Valve / Valveless Application
Auto Air Swing (Panel)
4 pipe systems 3/4" BSP (female) brass union
Std Marking (CE)
PLCKAW-NNET3 PLCKAW-NSLM3HP PLCKAW-NGS01 Cooling PLCKAW-NGS01 Heat Pump
PLCKAWH-NGS01 Heat Pump
PLCKCW-NSLM3HP
PLCKCW-NGS01 Cooling PLCKCW-NGS01 Heat Pump
MCK
MODEL NAME
NOMENCLATURE
CONTROL
CONNECTION
MCK-AW
MCK-CW
CLASSIFICATION PANEL
020AW
025AW
030AW
040AW
050AW
020AWH
025AWH
030AWH
040AWH
050AWH
010CW
015CW
020CW
AXBE
AXBE
AXBE
AXBE
AXBE
AXAA
AXAA
AXAA
AXAA
AXAA
AXBA
AXBA
AXBA
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
X
X

Nomenclature MFCU_(ii)
5
FILTER MARKING
UCW - W2.0 Valve / Valveless Application
Without Controller
Netware 3 (Coll/Heat)
SLM 3 Heat Pump Left piping
Right piping
3/4" BSP (female) adaptor
Saranet Filter Std Marking (CE)
MODEL NAME
NOMENCLATURE
CLASSIFICATION
CONTROL HANDSET CONNECTION
MCC
010CW
015CW
020CW
025CW
028CW
AXAK
AXBC
AXAJ
AXAC
AXBA
AXAK
AXBC
AXAJ
AXAC
AXBA
AXAK
AXBC
AXAJ
AXAC
AXBA
AXAK
AXBC
AXAJ
AXAC
AXBA
AXAK
AXBC
AXAJ
AXAA
AXBA
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
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X
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X
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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
MCC-CW

MFCU_(ii) Nomenclature
6
MCC-CW
FILTER MARKING
UCW - W2.0 Valve / Valveless Application
Without Controller
Netware 3 (Coll/Heat)
SLM 3 Heat Pump Left piping
Right piping
3/4" BSP (female) adaptor
Saranet Filter Std Marking (CE)
MODEL NAME
NOMENCLATURE
CLASSIFICATION
CONTROL HANDSET CONNECTION
MCC
030CW
038CW
040CW
050CW
060CW
AXAK
AXBC
AXAJ
AXAC
AXBA
AXAK
AXBC
AXAJ
AXAA
AXBA
AXAK
AXBC
AXAJ
AXAA
AXBA
AXAK
AXBC
AXAJ
AXAA
AXBA
AXAK
AXBC
AXAJ
AXAA
AXBA
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
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X
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X
X
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X
X
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X
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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

Nomenclature MFCU_(ii)
7
MDB-BW
MARKING
Valveless Application Without Controller Brazing (OD28.6mm, 1 1/8") Right Piping Left Piping Horizontal Flow Vertical flow Saranet Filter R15 / R29 Filter Standard Marking (CE)
AXAA X X X X X X X
AXAB X X X X X X X
AXAA X X X X X X X
AXAB X X X X X X X
FXAA X X X X X X X
FXAB X X X X X X X
FXAC X X X X X X X
FXAD X X X X X X X
FXAA X X X X X X X
FXAB X X X X X X X
FXAC X X X X X X X
FXAD X X X X X X X
075BW
100BW
125BW
150BW
MDB
MODEL NAME
NOMENCLATURE
CLASSIFICATION
CONTROL CONNECTION Discharge FILTER

MFCU_(ii) Application Information
8
Application Information
Operating Range
Operating Limits:
Thermal carrier : Water
Water temperature : 5 ~ 50°C
Maximum water pressure : 16 bar
Air temperature : (as below)
Cooling Mode
Temperature Ts °C/°F Th °C/°F
Minimum indoor 16.0 / 60.8 11.0 / 51.8
32.0 / 89.6 23.0 / 73.4
16.0 / 60.8 -
46.0 / 114.8 -
temperature
Maximum indoor
temperature
Minimum outdoor
temperature
Maximum outdoor
temperature
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature
Maximum indoor
temperature
Minimum outdoor
temperature
Maximum outdoor
temperature
Heating Mode
Ts: Dry bulb temperature. Th: Wet bulb temperature.
16.0 / 60.8 -
30.0 / 86.0 -
-5.0 / 23.0 -6.0 / 21.2
24.0 / 75.2 18.0 / 64.4
Installation Guide
System Conguration
The standard controller board (W2) comes with a VALVE jumper and a HEAT jumper. The system can be
congured as the jumper selection listed below:
VALVE & HEAT Jumper Location
Model: MWM - G2W / 301W
1. VALVE jumper is plugged into JVLV connector on the emergency switch board.
2. HEAT jumper is plugged into JMODE connector on the emergency switch board.
Model: MCK-AW/AWH/CW, MCM-DW/CBW/EW and MCC-CW
1. VALVE jumper is plugged into JVLV connector on the main board.
2. HEAT jumper is plugged into OD connector on the main board.
HEAT Jumper VALVE Jumper
Heatpump Mode & Valve Application √ √
Heatpump Mode & Valveless Application √ X
Cooling Mode & Valve Application X √
Cooling Mode & Valveless Application X X
√ Jumper Remained X Jumper Removed
Caution
Disconnect the power supply to the unit before attempting to connect the wiring

Application Information MFCU_(ii)
9
Model : MWM 007/010/015G2W (IONIZER)
Model : MWM 020/025G2W (IONIZER)

MFCU_(ii) Application Information
10
Model : MCM Series / MCC Series / MCK-AW/CW
MCK-AWH 4 pipes system controller board setting
A) Model selection
The standard controller board (W2.0) comes with a default setting for model selection. Please select the model
accordingly by using jumper.

Application Information MFCU_(ii)
11
System Model Function
2 Pipe
System
4 Pipe
System
M1 -
Model 1
M2 -
Model 2
M3 -
Model 3
M4 -
Model 4
Cooling or Heating
Cooling or Heating with Auxiliary Heater
Cooling Only with Boiler
Cooling or Heating with Boiler
B) Valve, Heat and Fan priority selection
Jumper With Jumper (Default) Without Jumper
Fan Priority Jumper User set speed or lower fan if auto Fan stop when thermostat cut off
mode is selected
Heat Jumper For Heat pump For cooling only
Valve Jumper For Valve control (Model 1,2,3 & 4) For valveless control (Model 1 & 2)

MFCU_(ii) Application Information
12
C) Others
The controller board comes with other option.
i) Unoccupied Mode
If the dry contact is closed, the Unoccupied mode is activated and vice versa. When Timer On is active,
system goes back to Occupied mode.
The dry contact connection points can be connected parallel with other fan coil unit (FCU) boards. If the
dry contact is closed, Unoccupied mode will be activated on all fan coil units that are connected parallel as
shown in gure below.
ii) Anti Freeze Mode
Anti Freeze operation has the highest priority among all unit operation. Anti Freeze operation will be activated
only if dry contact is closed and vice versa.
iii) Window Open Mode
The dry contact connection points can be connected in parallel with other fan coil unit (FCU) boards. If the
dry contact is closed, Window open mode will be activated on all the fan coil units which are connected in
parallel as shown in gure below.
iv) Load Shedding
The dry contact connection points can be connected in parallel with other fan coil unit (FCU) boards. If the
dry contact is closed, Load shedding mode will be activated on all the fan coil units which are connected in
parallel as shown in gure below.
Global Unoccupied, Global Window Open and Global Load Shedding operation could also be activated via the
network communication bus line by master controller with or without the above connection.
NOTE :
i) Auto Fan Mode is only applicable in Model 3 only. ( Cooling only with Boiler)
ii) Fan mode is not available in valveless control.
iii) Wired handset (Netware and SLM) has an indoor room sensor. Avoid locating the wired handset at isolated
places where room temperature reading will be inaccurate.

Application Information MFCU_(ii)
13
Water Piping Connection
The indoor unit is equipped with water outlet and inlet bare connection. There is an air-vent for air purging that
is tted at the outlet water header.
3 ways solenoid valve is required for cycling off or bypass the chilled water.
Black steel pipe, polyethrene pipe, PVC pipe and copper tube recommended in eld installation.
All types of piping and connection must be insulated by polyurethane (ARMAFLEX type or equivalent) to avoid
condensation.
Do not use contaminated or damaged pipe and tting for installation.
Some main tting components are needed in the system to enhance the capacity and ease of service, such as
gate valve, balancing valve, 2 ways or 3 ways solenoid valve, lter, strainer etc.
Preliminary Site Survey
Electrical supply and installation is to conform to LOCALAUTHORITY’s (e.g. National Electricity Board) CODES
and REGULATIONS.
Voltage supply uctuation must not exceed ± 10% of rated voltage. Electricity supply lines must be independent
of welding transformers which can cause supply uctuation.
Ensure that the location is convenient for wiring and piping.
Mounting
For ceiling mounted models, locate a position where piping and ducting work can be kept to a minimum. Ensure
that overhead supports are strong enough to hold the unit’s weight. Position hanger rods and check for alignment
with the unit. Check that hangers are secure and that the base of fan coil unit is level in two horizontal positions.
Piping
Drain and water piping must be accurately connected.
Please refer to “Specication Sheet” for piping sizes.

MFCU_(ii) Application Information
14
Piping Support
All water mains must be adequately supported to carry the necessary weight involved, provisions must be made
by the installing contractor to allow for adequate free movement of all vertical and horizontal risers and run outs.
Due to the fact that cold water will be circulated through the water mains, a sizeable movement of the water
mains can be expected due to contraction. If for example, the piping is rigidly supported with no provision for
movement, it is very possible that the tubing of tting may be broken causing water leakage in the conditioned
spaces throughout the building.
Coil Venting
Each standard basic unit coil is equipped with a manually operated air vent which is installed at the end of a
small copper line leading into the highest point of the coil. By means of this valve, air may be vented manually,
from the coil to keep it operating at full capacity. When water is rst introduced into a coil, air is sometimes
trapped in the coil tubing. This trapped air will reduce cooling capacity and create “Bubbling” or “Clanking” noise
within the units. To release air trapped in the coil, press the air vent head to allow air to ow out of the air vent
opening. Release when a steady stream of water appear.
Electrical Connection
As wiring regulations differ from country to country, please refer to your LOCAL ELECTRICAL CODES for eld
wiring regulations and ensure that they are complied with. Besides, take note of the following general precaution:
1) Ensure that the rated voltage of the unit corresponds to the name plate before commencing wiring work.
2) Provide a power outlet to be used exclusively for each unit and a power supply disconnect and a circuit-
breaker for over-current protection should be provided in the exclusive line.
3) The unit must be EARTH to prevent possible hazards due to insulation failure.
4) All wiring must be rmly connected.

Application Information MFCU_(ii)
15
Model Unit MWM 007/010/015/020/025G2W MWM 301W
Power supply cable size* mm²
mm²
mm²
mm²
mm²
mm²
1.5 2.5
3
2
Number of wire 3
Recommended fuse* A 2
Model Unit MCK 010/015/020CWMCK 020/025/030/
040/050AW
MCK 020/025/030/
040/050AWH
Power supply cable size* 1.5 1.5 1.5
Number of wire 3 3 3
Recommended fuse* A 2 2 2
Model Unit MCM 007/010/015CBW MCK 020/025/030/040/050DW
Power supply cable size* 1.5 1.5
Number of wire 3 3
Recommended fuse* A 2 2
Model Unit MCM 015EW MCM 020EW MCM 025EW
Power supply cable size* 2.5 2.5 4.0
Number of wire 3 3 3
Recommended fuse* A 2 2 2
Model Unit MCC 010/015/020CW MCC 025CWMCK 028/030/038/
040/050/060CW
Power supply cable size* 1.5 2.5 2.5
Number of wire 3 3 3
Recommended fuse* A 10 10 16
Model UnitMDB 075/100BWMDB 125/150BW
Power supply cable size* 1.5 1.5
Number of wire 34
Recommended fuse* A 55
Important: * These values are for information only. They should be checked and selected to comply local
or national codes and regulations. They are also subjected to the type of installation and size of conductors.
Cable Size
Wall Mounted

MFCU_(ii) Sound Data
16
Sound Data
Sound Pressure Level
Wall Mounted Split Type
1/1 Octave Sound Pressure Level (dB, reference 20µPa)
MWM015G2W
MWM020G2W
MWM025G2W
MWM301W
MWM007G2W
MWM010G2W
Microphone position : ACK20/25AW/AWH -- 1.4m below the facia. (JIS C 9612)
ACK30/40/50AW/AWH -- 1.5 m below the facia. (JIS B 8615)
Overall
125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz (dBA) Criteria
High 46 45 40 38 32 21 14 42 37
Medium 44 43 37 33 28 18 12 39 32
Low 43 42 35 31 26 17 11 37 31
High 48 46 43 39 33 27 19 45 38
Medium 45 43 40 35 29 21 15 42 35
Low 43 42 38 32 27 19 14 40 33
High 50 48 47 43 37 35 28 49 42
Medium 48 45 43 38 32 31 27 45 38
Low 46 43 41 35 30 30 26 43 36
High 50 49 49 46 39 38 31 51 45
Medium 48 47 47 43 36 34 25 48 42
Low 46 45 46 41 34 30 23 46 41
High 54 52 51 48 43 42 34 53 47
Medium 52 50 50 46 41 40 32 52 46
Low 51 49 49 45 39 39 31 50 45
MCK025AW/AWH
MCK030AW/AWH
MCK040AW/AWH
MCK050AW/AWH
Model
MCK020AW/AWH
Ceiling Cassette Split Type
SpeedNoise
1/1 Octave Sound Pressure Level (dB, reference 20µPa) Overall
125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz (dBA) Criteria
ModelSpeedNoise
High 33 33 36 34 28 19 7 38 33
Medium 31 29 32 29 23 13 5 33 28
Low 26 25 27 23 17 8 5 28 21
High 28 34 37 36 31 22 13 39 35
Medium 27 30 33 31 25 17 12 34 30
Low 24 26 28 25 19 12 11 28 23
High 30 35 39 38 33 25 15 42 37
Medium 28 31 34 33 26 18 13 36 32
Low 24 26 28 26 20 13 12 29 24
High 41 48 47 43 40 32 23 49 43
Medium 39 44 43 39 35 28 20 44 38
Low 37 41 40 36 32 25 19 42 35
High 40 48 48 45 44 35 27 50 45
Medium 38 46 47 42 42 33 25 48 43
Low 36 42 44 39 38 29 23 45 39
High 42 46 45 44 41 35 28 49 43
Medium 40 45 44 43 38 33 27 47 42
Low 37 43 43 40 35 30 26 45 39
Overall Noise
125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz (dBA) Criteria
High 44 45 40 36 26 19 10 42 35
Medium 40 38 34 28 19 9 7 35 29
Low 37 32 27 20 14 6 7 29 21
High 48 48 44 38 31 27 15 45 39
Medium 42 42 36 30 22 13 7 38 31
Low 39 36 28 20 15 6 6 30 23
High 52 50 46 41 34 31 19 48 41
Medium 43 43 38 33 26 18 8 40 33
Low 41 39 35 28 22 10 7 36 30
MCK020CW
Model Speed 1/1 Octave Sound Pressure Level (dB, reference 20µPa)
MCK010CW
MCK015CW
Microphone position : AWM-G2W -- 1 m in front of the unit and 0.8 m below the vertical centre line of the unit. (JIS C 9612)
AWM301W -- 1 m in front and 1 m below the air discharge opening of the unit (JIS B 8615)
Microphone position : 1.4m below the facia. (JIS C 9612)

Sound Data MFCU_(ii)
17
Model 1/1 Octave Sound Pressure Level (dB, ref 20μPa)
1/1 Octave Sound Pressure Level (dB, ref 20μPa)
1/1 Octave Sound Pressure Level (dB, ref 20μPa)
High 26 34 38 42 38 35 23 45 41
Medium 23 29 36 39 34 31 18 42 38
Low 19 26 33 34 31 23 12 37 33
High 27 35 39 43 39 36 24 46 42
Medium 24 30 37 40 35 32 19 43 39
Low 20 27 34 35 32 24 13 38 34
High 28 36 40 44 40 37 25 47 43
Medium 25 31 38 41 36 33 20 44 40
Low 21 28 35 36 33 25 13 39 35
Model
Speed Overall
125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz (dBA) Criteria
125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz (dBA) Criteria
Noise
Overall Noise
Speed
MCM007CBW
MCM010CBW
MCM015CBW
Microphone position: 1m in front and 0.8m below the vertical centre line of the unit.
High 45 46 47 46 41 38 29 50 45
Medium 42 43 45 42 38 34 24 47 41
Low 36 37 39 35 31 24 15 40 34
High 48 51 51 50 45 41 33 54 49
Medium 47 50 50 49 44 40 32 53 48
Low 45 47 48 47 41 36 27 50 46
High 45 48 48 47 43 33 24 51 46
Medium 44 47 47 46 42 32 23 50 45
Low 43 45 45 44 39 29 20 48 43
High 51 53 51 50 47 37 30 54 49
Medium 48 51 50 49 46 36 28 53 48
Low 46 50 49 48 44 35 27 52 47
High 51 53 51 50 47 37 30 54 49
Medium 48 51 50 49 46 36 28 53 48
Low 46 50 49 48 44 35 27 52 47
Microphone position : MCM 020/025DW -- 1 m in front of the unit and 0.8 m below the air discharge opening. (JIS C 9612)
MCM030/040/050DW -- 1 m in front of the unit and 1 m below the air discharge opening. (JIS B 8615)
MCM040DW
MCM050DW
MCM020DW
MCM025DW
MCM030DW
Ceiling Exposed Split Type
Overall Noise
125 Hz 250 Hz 500 Hz
1000 Hz 2000 Hz 4000 Hz 8000 Hz
(dBA) Criteria
High 42 46 49 44 43 36 31 50 45.0
Medium 36 40 43 37 36 27 20 43 38.0
Low 34 38 41 34 33 23 15 41 36.0
High 45 47 51 48 47 40 34 53 48.0
Medium 43 46 49 46 44 37 31 51 45.0
Low 42 46 47 44 42 35 27 49 43.0
High 47 50 53 50 50 43 39 56 51.0
Medium 44 46 49 46 45 38 33 51 46.0
Low 38 40 43 38 37 28 22 44 38.0
MCM025EW
Model Speed
MCM015EW
MCM020EW
Microphone position: MCM 015/020/025EW -- 1 m in front of the unit and 1 m below the air discharge opening. (JIS B 8615)