Midea MKG Series Operating manual

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

AC Fan Coil Unit Two-pipe Wall-mounted Series
- 1 -
Wall-mounted
AC Fan Coil Unit
1. INTRODUCTION ......................................................................................... - 2 -
2. NOMENCLATURE ....................................................................................... - 2 -
3. PRODUCT DETAILS ................................................................................... - 2 -
4. EXTERNAL APPEARANCE ........................................................................ - 3 -
5. FEATURE .................................................................................................... - 4 -
6. SPECIFICATIONS ....................................................................................... - 5 -
7. DIMENSIONS ............................................................................................ - 11 -
8. SERVICE SPACES .................................................................................... - 14 -
9. MAIN PCB PORTS .................................................................................... - 14 -
10. WIRING DIAGRAMS .............................................................................. - 16 -
11. SOUND LEVELS .................................................................................... - 17 -
12. INSTALLATION ...................................................................................... - 21 -
13. CONTROLLER ....................................................................................... - 33 -
14. CAPACITY TABLES ............................................................................... - 56 -

AC Fan Coil Unit Two-pipe Wall-
mounted Series
- 2 -
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
B: S type panel
C: A type panel
Air Flow (250CFM)
Type Code
G: Wall-mounted FCU
Chilled Water Fan Coil Unit
Midea
3. Product Details
Series Model Air volume(CFM) Power supply
250
220~240V-1Ph-50Hz
300
400
500
600
A type panel
MKG-250-C 250
220~240V-1Ph-50Hz
MKG-300-C 300
MKG-400-C 400
MKG-500-C 500
MKG-600-C 600
250
220~240V-1Ph-50Hz
300
400
500
600
S panel
була
в
поставках
2015-2021
рр
в нас лишилось декілька MKG-600B

AC Fan Coil Unit Two-pipe Wall-mounted Series
- 3 -
4. External Appearance
A panel
МИРКОНД буде поставляти в 2022-23 з таким дизайном

AC Fan Coil Unit Two-pipe Wall-
mounted Series
- 4 -
5. Feature
u
Multi-connection outlet pipe method: left/right/rear, more flexible for installation.
u
Wind direction adjustment can be in horizontal and vertical way for auto swing louver
u
Built-in 3-way electromagnetic valve.
u
Cross flow fan creates quiet and comfortable environment.
u
Easy maintenance has been realized as the front panel can be removed for easy access.
u
Remote controller with LCD display is standard, wired controller and central controller are optional.
Right pipin
g
Left piping
Righ t back pi ping
Left ba ck piping
Horizontal air deflector
Vertical air deflector

AC Fan Coil Unit Two-pipe Wall-mounted Series
- 5 -
6. Specifications
6.1 S type panel
MKG-250-B / MKG-300-B / MKG-400-B
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
Current input H A 0.12 0.18
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 Tangenti al 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.

AC Fan Coil Unit Two-pipe Wall-
mounted Series
- 6 -
MKG-500-B / MKG-600-B
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
Capac ity (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
Current input A 0.22 0.29
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.

AC Fan Coil Unit Two-pipe Wall-mounted Series
- 7 -
6.2 A type panel
MKG-250-C / MKG-300-C / MKG-400-C
Model MKG-250-C MKG-300-C MKG-400-C
Power supply V/Ph/Hz 220-240/1/50
Air flow (H/M/L)
m
3
/h 435/396/342 523/426/351 660/534/480
CFM 256/233/201 308/251/206 388/314/282
Cooling
Capacity (H/M/L) kW 1.94/1.84/1.68 2.64/2.4/1.99 2.94/2.58/2.34
Water flow rate(H/M/L) m
3
/h 0.35/0.33/0.3 0.47/0.43/0.36 0.53/0.46/0.42
Water pressure drop(H/M/L) kPa 31.6/28.6/25.2 37.5/30/24 57.2/47.6/38.7
Heating
Capacity (H/M/L) kW 2.34/2.15/1.94 2.9/2.6/2.22 3.46/2.75/2.52
Water flow rate(H/M/L) m
3
/h 0.43/0.39/0.35 0.53/0.47/0.4 0.63/0.5/0.46
Water pressure drop(H/M/L) kPa 35.2/34.9/30 39.3/31.5/25 70.8/55.1/46.2
Power input (H/M/L) W 35/32/31 47/43/39 50/51/47
Current Input A 0.11 0.17 0.18
Sound pressure level dB(A) 30/24/20 35/29/24 37/31/26
Fan motor Type Low noise 3-speed fan motor
Quantity 1 1 1
Fan Type Tangential fan
Quantity 1 1 1
Coil
Row 2 2 2
Diameter mm Φ7 Φ7 Φ7
Tube pitch(a)xrow pitch(b) mm 21×13.37 21×13.37 21×13.37
Dimension (W×H×D) mm 635×315×26.74 635×315×26.74 635×315×26.74
Fin spacing mm 1.5 1.5 1.5
Fin type Hydrophilic aluminium
Circuit 5 5 5
Max. working pressure MPa 1.6 1.6 1.6
Body
Net dimensions (W×H×D) mm 915×290×233 915×290×233 915×290×233
Packing size (W×H×D) mm 1020×390×315 1020×390×315 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 G3/4 G3/4
Drain pipe mm ODΦ20 ODΦ20 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.

AC Fan Coil Unit Two-pipe Wall-
mounted Series
- 8 -
MKG-500-C / MKG-600-C
Model MKG-500-C MKG-600-C
Power supply V/Ph/Hz 220-240/1/50
Air flow (H/M/L) m3/h 841/723/594 915/836/714
CFM 495/425/349 538/492/420
Cooling
Capacity (H/M/L) kW 4.01/3.61/3.1 4.61/4.33/3.84
Water flow rate(H/M/L) m3/h 0.72/0.65/0.56 0.83/0.78/0.69
Water pressure drop(H/M/L) kPa 47.1/33.5/29.7 51/39.5/34
Heating
Capacity (H/M/L) kW 4.39/3.8/3.27 4.55/4.2/3.82
Water flow rate(H/M/L) m3/h 0.8/0.69/0.6 0.83/0.76/0.69
Water pressure drop(H/M/L) kPa 48.6/40.8/31.7 48/43/33
Power input (H/M/L) W 60/54/48 72/60/55
Current Input A 0.22 0.29
Sound pressure level dB(A) 39/33/28 40/34/29
Fan motor Type Low noise 3-speed fan motor Low noise 3-speed fan motor
Quantity 1 1
Fan Type Tangential fan Tangential fan
Quantity 1 1
Coil
Row 2 2
Diameter mm Φ7 Φ7
Tube pitch(a)xrow pitch(b) mm 21×13.37 21×13.37
Dimension (W×H×D) mm 785×315×26.74 785×315×26.74
Fin spacing mm 1.5 1.5
Fin type Hydrophilic aluminium Hydrophilic aluminium
Circuit 5 5
Max. working pressure MPa 1.6 1.6
Body
Net dimensions (W×H×D) mm 1072×315×237 1072×315×237
Packing size (W×H×D) mm 1180×415×315 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 G3/4
Drain pipe mm ODΦ20 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.

AC Fan Coil Unit Two-pipe Wall-mounted Series
- 9 -
6.3 P type panel
MKG-250-D / MKG-300-D / MKG-400-D
Model MKG-250-D MKG-300-D MKG-400-D
Power supply V/Ph/Hz 220-240/1/50
Air flow (H/M/L)
m
3
/h 435/396/342 523/426/351 660/534/480
CFM 256/233/201 308/251/206 388/314/282
Cooling
Capacity (H/M/L) kW 1.94/1.84/1.68 2.64/2.4/1.99 2.94/2.58/2.34
Water flow rate(H/M/L) m
3
/h 0.35/0.33/0.3 0.47/0.43/0.36 0.53/0.46/0.42
Water pressure drop(H/M/L) kPa 31.6/28.6/25.2 37.5/30/24 57.2/47.6/38.7
Heating
Capacity (H/M/L) kW 2.34/2.15/1.94 2.9/2.6/2.22 3.46/2.75/2.52
Water flow rate(H/M/L) m
3
/h 0.43/0.39/0.35 0.53/0.47/0.4 0.63/0.5/0.46
Water pressure drop(H/M/L) kPa 35.2/34.9/30 39.3/31.5/25 70.8/55.1/46.2
Power input (H/M/L) W 35/32/31 47/43/39 50/51/47
Current Input A 0.11 0.17 0.18
Sound pressure level dB(A) 30/24/20 35/29/24 37/31/26
Fan motor Type Low noise 3-speed fan motor
Quantity 1 1 1
Fan Type Tangential fan
Quantity 1 1 1
Coil
Row 2 2 2
Diameter mm Φ7 Φ7 Φ7
Tube pitch(a)xrow pitch(b) mm 21×13.37 21×13.37 21×13.37
Dimension (W×H×D) mm 635×315×26.74 635×315×26.74 635×315×26.74
Fin spacing mm 1.5 1.5 1.5
Fin type Hydrophilic aluminium
Circuit 5 5 5
Max. working pressure MPa 1.6 1.6 1.6
Body
Net dimensions (W×H×D) mm 915×290×229 915×290×229 915×290×229
Packing size (W×H×D) mm 1020×390×315 1020×390×315 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 G3/4 G3/4
Drain pipe mm ODΦ20 ODΦ20 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.