McQuay MWM-LW User manual

TECHNICALMANUAL
Chilled Water Fan Coil Units
MWM, MCK, MCM, MCC, MDB Series
MWM-LW MCK-EW
MCK-CW
MCC-CW
MCM-DW/EW
MDB-BW
V1

Table of Contents
“McQuay” is a registered trademark of McQuay International. All rights reserved.
@ 2013 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.
Table of Contents
Nomenclature......................................................................................................................1
Application Information .....................................................................................................9
Installation Guide.........................................................................................................10
Sound Data........................................................................................................................15
NC Curve.....................................................................................................................22
Selection Process.............................................................................................................43
Engineering & Physical Data...........................................................................................58
Outlines & Dimensions ....................................................................................................69
Wiring Diagrams .............................................................................................................101
Service & Maintenance .................................................................................................. 116
Troubleshooting ............................................................................................................. 117

Nomenclature
1
Nomenclature
(Wall Mounted Fan Coil Unit)
M WM 10 L W – A C E D A - R
Brand
M : McQuay
Product Type
WM : Wall Mounted
Operating Mode
E : Cooling Only
H : Heatpump
Size (Cooling/Heating)
07 : 8,300/11,000 btu/hr
10 : 9,200/12,000 btu/hr
15 : 11,300/15,000 btu/hr
20 : 15,500/20,500 btu/hr
25 : 18,000/25,000 btu/hr
Product Series
L : L series
Product Specification Variation
A : First Issue
Grille
D : Grille D
Electrical Characteristics
A : 50Hz / 1Ph / 220-240V
K : 60Hz / 1Ph / 208-230V
Model
W : Chilled Water Fan Coil
Market Region
C : Export with CE Mark
RoHS Compliance

Nomenclature
2
Nomenclature
(Cassette Fan Coil Unit C series)
M CK 10 C W – A X AB - R
Brand
M : McQuay
Product Type
CK : Ceiling Cassette
Size (Cooling/Heating)
10 : 8,500/12,000 btu/hr
15 : 14,000/16,000 btu/hr
20 : 15,500/18,000 btu/hr
Product Series
C : C series
Electrical Characteristics
A : 50Hz / 1Ph / 220-240V
Model
W : Chilled Water Fan Coil
Type of ref. connection
X : Not applicable
RoHS Compliance
Product Specification Variation

Nomenclature
3
Nomenclature
(Cassette Fan Coil Unit A series)
M CK 25 A W – A X AB - R
Brand
M : McQuay
Product Type
CK : Ceiling Cassette
Size (Cooling/Heating)
20 : 22,500 / 28,500 btu/hr
25 : 25,500 / 32,000 btu/hr
30 : 30,000 / 37,500 btu/hr
40 : 33,500 / 40,500 btu/hr
50 : 36,500 / 44,000 btu/hr
Product Series
A : A series Electrical Characteristics
A : 50Hz / 1Ph / 220-240V
Model
W : Chilled Water Fan Coil
Type of ref. connection
X : Not applicable
RoHS Compliance
Product Specification Variation
Piping
H : 4 pipes system

Nomenclature
4
Nomenclature
(Ceiling Cassette E series)
M CK 20 E W – A E C A A - R
Brand
M : McQuay
Product Type
CK : Ceiling Cassette
Controller
C : W3 Control Module with DC swing
Size (Cooling/Heating)
20 : 20,000 / 28,000 btu/hr
25 : 25,000 / 33,600 btu/hr
30 : 30,000 / 38,300 btu/hr
40 : 38,000 / 45,500 btu/hr
50 : 43,000 / 52,000 btu/hr
Product Series
E : E series
Product Specification Variation
A : First Issue
Motor
A : AC motor
Electrical Characteristics
A : 50Hz / 1Ph / 220-240V
Model
W : Chilled Water Fan Coil
Market Region
E : Export w/o marking
RoHS Compliance

Nomenclature
5
Nomenclature
(Ceiling Mounted D series)
M CM 25 D W – A X AB - R
Brand
M : McQuay
Product Type
CM : Ceiling Mounted
Size (Cooling/Heating)
20 : 17,000 / 22,000 btu/hr
25 : 20,800 / 25,900 btu/hr
30 : 24,600 / 28,000 btu/hr
40 : 31,200 / 42,300 btu/hr
50 : 45,000 / 51,500 btu/hr
Product Series
D : D series Electrical Characteristics
A : 50Hz / 1Ph / 220-240V
Model
W : Chilled Water Fan Coil
Type of ref. connection
X : Not applicable
RoHS Compliance
Product Specification Variation

Nomenclature
6
Nomenclature
(Ceiling Mounted E series)
M CM 15 E W – A X AB - R
Brand
M : McQuay
Product Type
CM : Ceiling Mounted
Size (Cooling/Heating)
10 : 15,500 / 19,500 btu/hr
15 : 20,300 / 25,000 btu/hr
20 : 21,000 / 28,000 btu/hr
Product Series
E : E series Electrical Characteristics
A : 50Hz / 1Ph / 220-240V
Model
W : Chilled Water Fan Coil
Type of ref. connection
X : Not applicable
RoHS Compliance
Product Specification Variation

Nomenclature
7
Nomenclature
(Ceiling Concealed)
CC 010 C
MW – A X AC – R
RoHs Compliance
Brand
M : McQuay
Product Type
CC : Ceiling Concealed
Size (Cooling/Heating)
010 : 9,900/11,500 btu/hr
015 : 11,600/15,000 btu/hr
020 : 18,000/23,000 btu/hr
025 : 22,500/29,000 btu/hr
028 : 26,000/33,000 btu/hr
030 : 28,000/36,000 btu/hr
038 : 35,200/43,000 btu/hr
040 : 38,000/46,000 btu/hr
050 : 47,000/57,000 btu/hr
060 : 54,000/67,000 btu/hr
Type of ref. connection
X : Not applicable
F : For Flare
Product Series
C : C series
Electrical Characteristics
A : 50Hz / 1Ph / 220-240V
Model
W : Chilled Water Fan Coil
Product Specification Variation