Midea C Series Operating manual

220-240V, 50Hz
TechnicalServiceManual
Fan Coil Unit

Midea 50Hz AC Fan Coil Unit
2-Pipe Wall-mounted Series
Technical Service Manual
Midea reserves the right to discontinue, or change specification or designs at any time without notices and without incurring
obligations

Midea 50Hz AC Fan Coil Unit Two-pipe Wall-mounted Series MCAC-UTSM-201606
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Content
1.INTRODUCTION ........................................................................... 2
2.NOMENCLATURE......................................................................... 2
3.PRODUCT SCHEDULE ................................................................ 2
4.EXTERNAL APPEARANCE.......................................................... 3
5.FEATURE ...................................................................................... 3
6.SPECIFICATIONS ......................................................................... 5
7.DIMENSIONS ................................................................................ 9
8.SERVICE SPACES...................................................................... 10
9.WIRING DIAGRAMS................................................................... 11
10.CAPACITY TABLES.................................................................. 12
11.SOUND LEVELS ....................................................................... 26
12.EXPLODED VIEW ..................................................................... 27
13.INSTALLATION ......................................................................... 29
14.CONTROLLER .......................................................................... 40

MCAC-UTSM-201606 Midea 50Hz AC Fan Coil Unit Two-pipe Wall-mounted Series
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1. Introduction
MKG fan coil is a kind of newly designed fan coil units, which is mounted on the wall. It has two kinds of body, both
have 3-way valve inside the body. In additional, it has panels of different color can be optional.
MKG series fan coil is designed and manufactured on the base of fully adoption advanced technology. The acute
and thin body makes it save a lot of space and easy for installation. Quality materials and state-of-the-art technology
ensure optimal performance with virtually imperceptible noise levels and keep running smoothly.
Midea MKG series fan coil unit has been tested by national AC quality supervise testing center, as low noise level,
high efficiency, stable operation and low power consumption make it as the advanced production in the world,. Due
to their reduced dimensions and pleasing design, these units are ideally suited for Commercial and Residential
environments.
2. Nomenclature
M K G – 250 - B
Design Serial Number
Omit:C type panel
B: S type panel
Air Flow (250CFM)
Type Code
G: Wall-mounted FCU
Chilled Water Fan Coil Unit
Midea
3. Product Schedule
Series Model
Air volume
(CFM) Power supply
C type panel
MKG-250 250
220~240V-1Ph-50Hz
MKG-300 300
MKG-400 400
MKG-500
500
MKG-600 600
S type panel
MKG-250-B 250
220~240V-1Ph-50Hz
MKG-300-B 300
MKG-400-B 400
MKG-500-B 500
MKG-600-B 600

Midea 50Hz AC Fan Coil Unit Two-pipe Wall-mounted Series MCAC-UTSM-201606
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4. External Appearance
C panel
S panel
5. Feature
Multi-connection outlet pipe method: left/right/rear, more flexible for installation.
Wind direction adjustment can be in horizontal and vertical way for auto swing louver
Right piping
Left piping
Right back piping
Left back piping
Horizontal air deflector
Vertical air deflector

MCAC-UTSM-201606 Midea 50Hz AC Fan Coil Unit Two-pipe Wall-mounted Series
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Built-in 3-way electromagnetic valve.
Cross flow fan creates quiet and comfortable environment.
Easy maintenance has been realized as the front panel can be removed for easy access.
Remote controller with LCD display is standard, wired controller and central controller are optional.
Four-speed motor with super high speed reserved for more choice.
Eurovent certified performance.
You can get the eurovent information of our products from: http://www.eurovent-certification.com

Midea 50Hz AC Fan Coil Unit Two-pipe Wall-mounted Series MCAC-UTSM-201606
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6. Specifications
Model
MKG-250 300 400
Air flow
H/M/L m3/h 425/360/320 510/430/380 680/580/510
H/M/L CFM 250/210/190 300/250/220 400/340/300
Cooling
Capacity H/M/L kW 2.2/1.84/1.65 2.64/2.24/2.05 3.08/2.62/2.27
Water flow rate H L/h 378 454 530
Water pressure drop H kPa 12 18 22
Heating
Capacity H/M/L kW 3.02/2.6/2.23 3.69/3.25/2.77 4.34/3.86/3.25
Water pressure drop H kPa 10 16.4 20.8
Power supply
V/Ph/Hz
220-240/1/50
Power input
H W 28 40 44
Sound pressure level
H/M/L dB(A) 30/24/20 35/29/24 37/31/26
Fan motor
Type Low noise 4-speed fan motor
Quantity 1
Fan
Type Cross-flow fan
Quantity 1
Coil
Row
2
Max. Working pressure MPa 1.6
Diameter mm Φ7
Body
Dimensions W×H×D mm 915×210×290
Net weight kg 12
Packing W×H×D mm 1020×300×385
Gross weight kg 16
Pipe
connection
Water inlet/outlet pipe inch G3/4"
Drain pipe mm ODΦ20
Controller
R51/E (standard)
Notes:
1. H: high fan speed; M: medium fan speed; L: low fan speed
2. Cooling Conditions: Entering Water 7°C, Temperature Rise 5°C, Entering Air Temperature 27°C DB,19°C WB.
Heating Conditions: Entering Water 50°C, Enter air temperature 20°C, and water flow is same to the cooling conditions.
3. Noise is tested in semi-anechoic test room.

MCAC-UTSM-201606 Midea 50Hz AC Fan Coil Unit Two-pipe Wall-mounted Series
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Specifications
Model MKG-
500
600
Air flow
H/M/L
m
3
/h
850/720/640
1020/870/770
H/M/L CFM 500/420/380 600/510/450
Cooling
Capacity H/M/L kW 4.07/3.73/3.24 4.45/4.18/3.74
Water flow rate H L/h 700 765
Water pressure drop
H kPa 26 29
Heating
Capacity H/M/L kW 5.69/5.12/4.32 6.3/5.67/4.73
Water pressure drop
H kPa 25.1 27.9
Power supply
V/Ph/Hz 220-240/1/50
Power input
H W 50 60
Sound pressure level
H/M/L dB(A) 39/33/28 40/34/29
Fan motor
Type
Low noise 4-speed fan motor
Quantity 1
Fan
Type Cross-flow fan
Quantity 1
Coil
Row 2
Max. Working pressure MPa 1.6
Diameter mm Φ7
Body
Dimensions
W×H×D
mm
1070×210×316
Net weight kg 15
Packing W×H×D mm 1180×300×410
Gross weight kg 19
Pipe
connection
Water inlet/outlet pipe inch G3/4"
Drain pipe mm ODΦ20
Controller
R51/E (standard)
Notes:
1. H: high fan speed; M: medium fan speed; L: low fan speed
2. Cooling Conditions: Entering Water 7°C, Temperature Rise 5°C, Entering Air Temperature 27°C DB,19°C WB.
Heating Conditions: Entering Water 50°C, Enter air temperature 20°C, and water flow is same to the cooling conditions.
3. Noise is tested in semi-anechoic test room.

Midea 50Hz AC Fan Coil Unit Two-pipe Wall-mounted Series MCAC-UTSM-201606
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Specifications
Model MKG-250-B MKG-300-B MKG-400-B
Power supply V/Ph/Hz 220-240/1/50
Air flow (H/M/L) m3/h 425/390/350 510/470/390 680/550/460
CFM 250/230/205 300/275/230 400/325/270
Cooling
Capacity (H/M/L) kW 2.63/2.41/2.16 2.97/2.47/2.12 3.28/2.83/2.41
Water flow rate L/h 452 511 564
Water pressure drop kPa 29.4 35.6 43.5
Heating Capacity (H/M/L) kW 3.36/3.1/2.79 3.91/3.26/2.77 4.37/3.73/3.17
Water pressure drop kPa 27.3 32.9 40.8
Power input W 24 37 40
Sound pressure level dB(A) 30/24/20 35/29/24 37/31/26
Fan motor Type Low noise 4-speed fan motor
Quantity 1
Fan Type Tangential fan
Quantity 1
Coil
Row 2
Diameter mm Φ7
Tube pitch(a) ×row pitch(b) mm 21×13.37
Dimension (W×H×D) mm 635×315×26.74
Fin spacing mm 1.5
Fin type Hydrophilic aluminum
Circuit 5
Max. working pressure MPa 1.6
Body
Net dimensions (W×H×D) mm 915×290×230
Packing size (W×H×D) mm 1020×390×315
Net weight kg 13 13 13.3
Gross weight kg 16.3 16.3 16.7
Pipe
connections
Water inlet/outlet pipe inch G3/4
Drain pipe mm ODΦ20
Notes:
1. H: high fan speed; M: medium fan speed; L: low fan speed
2. Cooling Conditions: Entering Water 7°C, Temperature Rise 5°C, Entering Air Temperature 27°C DB,19°C WB.
Heating Conditions: Entering Water 50°C, Enter air temperature 20°C, and water flow is same to the cooling conditions.
3. Noise is tested in semi-anechoic test room.

MCAC-UTSM-201606 Midea 50Hz AC Fan Coil Unit Two-pipe Wall-mounted Series
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Specifications
Model MKG-500-B MKG-600-B
Power supply V/Ph/Hz 220-240/1/50
Air flow (H/M/L) m3/h 850/745/620 1020/915/780
CFM 500/440/365 600/540/460
Cooling
Capacity (H/M/L) kW 4.25/3.85/3.32 5/4.47/3.97
Water flow rate L/h 731 860
Water pressure drop kPa 31.8 42.5
Heating Capacity (H/M/L) kW 5.81/5.17/4.43 6.7/6/5.28
Water pressure drop kPa 30.2 39.7
Power input W 50 66
Sound pressure level dB(A) 39/33/28 40/34/29
Fan motor Type Low noise 4-speed fan motor
Quantity 1
Fan Type Tangential fan
Quantity 1
Coil
Row 2
Diameter mm Φ7
Tube pitch(a) ×row pitch(b) mm 21×13.37
Dimension (W×H×D) mm 785×315×26.74
Fin spacing mm 1.5
Fin type Hydrophilic aluminum
Circuit 5
Max. working pressure MPa 1.6
Body
Net dimensions (W×H×D) mm 1072×315×230
Packing size (W×H×D) mm 1180×415×315
Net weight kg 15.8 15.8
Gross weight kg 19.4 19.4
Pipe
connections
Water inlet/outlet pipe inch G3/4
Drain pipe mm ODΦ20
Notes:
1. H: high fan speed; M: medium fan speed; L: low fan speed
2. Cooling Conditions: Entering Water 7°C, Temperature Rise 5°C, Entering Air Temperature 27°C DB,19°C WB.
Heating Conditions: Entering Water 50°C, Enter air temperature 20°C, and water flow is same to the cooling conditions.
3. Noise is tested in semi-anechoic test room.