Midea MKS02D/D User manual

Midea Air Handling Unit
Technical Service Manual
Midea reserves the right to discontinue, or change specification or designs at any time without notices and without incurring obligations.

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Content
1.Product Introduction .............................................................................. - 2 -
2.Specifications ......................................................................................... - 6 -
3.Dimension ............................................................................................. - 18 -
4.Coil Data ................................................................................................ - 21 -
5.Customizable ESP ................................................................................ - 23 -
6.Motor and Fan ....................................................................................... - 29 -
7.Installation ............................................................................................ - 32 -
8.Test Run ................................................................................................ - 36 -
9.Daily Maintenance ................................................................................ - 37 -
10.Trouble Shooting ............................................................................... - 38 -
11.After-sales Service & Warranty Repair ............................................ - 39 -

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1. Product Introduction
1.1 Brief Introduction
Air Handling Unit (AHU) is the primary equipment in an air system of a central hydronic system. It handles and
conditions the air and distributes it to various conditioned spaces. Midea air handling units (AHUs) have been
designed and manufactured to meet the requirements of all kinds of space cooling and heating, such as office
buildings, shopping malls, exhibition halls, airports, railway stations, hotels, factories and any other central air-
conditioning systems.
Midea AHUs have been widely used in most part of the world for a couple of years. Now, the 3th generation AHU
(horizontal and vertical type) and the 4th generation AHU (suspended type) have been launched to provide you
with more comfortable and convenient. It adapts unitary structure design, more outstanding cold-bridge free
performance, lower air leakage and more elegant appearance. There are 3 types: suspended type, horizontal type
and vertical type, including 62 standard models, and the air flow rate is available from 2,000m3/h to 40,000m3/h.
Different external static pressure (ESP) can be customized to meet different kinds of applications.
1.2 Nomenclature
MKS 05 D S Y / D-H
D: The 4th design series
Pipe Connecting Mode
Y: Right-handed
Z: Left-handed
Heat Exchanger
S: Standard capacity
H: High capacity
Unit Structure
D: Suspended
Air Flow Rate, ×1,000m3/h
Midea Air Handling Unit

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MKS 05 W 4 Y / C-H
C: The 3rd design series
Pipe Connecting Mode
Y: Right-handed
Z: Left-handed
Coil Rows
4: 4-rows
6: 6-rows
Unit Structure
W: Horizontal
L: Vertical
Air Flow Rate, ×1,000m3/h
Midea Air Handling Unit
1.3 Orientation
Unit handling orientation is determined by location of pipe connection while facing unit along with the direction of
air flow. The unit below is left-handed connection unit, otherwise is the right-handed connection unit.
1.4 Features
• No Cold Bridge:
All interior metal surfaces are insulated from external metal surfaces by means of polyurethane foam and specially
designed gaskets. The common practice of special insulation used in conventional designs by gluing PE strips to
exposed interior metal surfaces is eliminated. Cold bridge is thus prevented.
• No Air Leakage:
The aluminum frames add strength as well providing an air tight connection through its convex and concave
profiles interlock. The integrated panels are formed with GI sheet steel, insulated with high pressure PU foam to
preventing cold bridge and condensation. Nuts and bolts are used to further enhance the air tightness and rigidity

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of the cabinet.
• Polyurethane Insulation:
Panel insulation is made up of Polyurethane foam which is formed by specially designed molds under high
pressure. Its density is 50 kg/m3 and standard panel thickness is 25mm, 35mm and 50mm.
• Modular Design:
Each module is 100mm. Standardized modular panels fastened by nuts and bolts makes on site assembly of CKD
units simple and neat.
• Heat Exchanger:
Coil is made by mechanical expansion to connect the copper tube with aluminum fins. Anti-corrosion coated
aluminum and copper fins are optional. Stainless steel coils are also alternative. The heating and cooling coils are
selected with professional software which is written based on the science with the actual situation of coil.
• Low Noise:
The low noise fans are selected with professional software which are statically and dynamically tested to ensure
high efficiency, low noise and low vibration. Internal spring isolators and vibration dampers are standard to
minimize vibration as well as a soft connection between air outlet of fan and the panel to minimize noise,
furthermore, special integrate structure panels also reduces the noise.
• Filter:
Nylon filter can be taken out to wash or change.

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1.5 Optional Spare Parts
• Control Box
• Humidifier
• Two-way/Three-way Valves
• Secondary and High Efficiency Filter
• Damper

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2. Specifications
2.1 Suspended type
Return air condition
Model MKS/D 02D 03D 04D 05D 06D 07D 08D 09D 10D 12D 15D
Air volume m3/h 2000 3000 4000 5000 6000 7000 8000 9000 10000 12000 15000
Standard
capacity
Rated
cooling
capacity
kW 11.2 17.1 22.8 28.5 34.1 39.1 45.5 51.2 58.9 68.3 85.3
Rated
heating
capacity
kW 18.6 26.7 39.9 47.5 57.5 66.0 73.1 83.0 99.3 113.5 142.1
Water
flow rate
L/s 0.54 0.82 1.09 1.36 1.63 1.90 2.17 2.45 2.81 3.26 4.08
External
static
pressure
Pa 67 52 70 42 92 98 79 116 136 108 125
Fan
motor
input
kW 0.37 0.55 0.75 1.10 1.50 1.10 1.50 2.20 2.20 3.00 4.00
Water
pressure
drop
kPa 19 35 52 20 25 44 31 34 30 52 36
Chilled
water
pipe
DN 40 40 40 40 40 40 50 50 50 50 50
Sound
level
DB 58 58.0 60.0 62.0 62.0 64.0 64.0 66.0 66.0 68.0 70.0
Net
weight
kg 90 120 145 160 180 190 205 235 260 270 350
High
capacity
Rated
cooling
capacity
kW 14.6 22.0 29.3 36.6 44.1 51.7 59.1 67.1 74.6 85.6 107.0
Rated
heating
capacity
kW 22.6 33.8 45.1 56.4 67.7 79.0 90.2 100.8 112.0 135.2 169.0
Water
flow rate
L/s 0.70 1.05 1.40 1.75 2.11 2.47 2.82 3.21 3.56 4.09 5.11
External
static
pressure
Pa 227 212 230 202 252 258 239 286 306 278 305
Fan
motor
input
kW 0.75 1.10 1.10 1.50 2.20 2.20 2.20 3.00 3.00 4.00 5.50

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Water
pressure
drop
kPa 32 57 62 40 54 61 42 59 58 57 33
Chilled
water
pipe
DN 40 40 40 40 40 40 50 50 50 50 50
Sound
level
DB 59 58.1 61.9 63.0 63.3 65.4 65.5 67.0 67.8 69.6 71.8
Net
weight
kg 95 125 155 170 190 205 220 250 280 290 380
Model MKS/D 02D 03D 04D 05D 06D 07D
Drain pipe DN 25 25 25 25 25 25
Package dimension mm 1066×914×702 1216×994×752 1496×994×752 1586×994×752 1786×994×752 1786×994×852
Net dimension mm 870×750×555 1020×830×605 1300×830×605 1390×830×605 1590×830×605 1590×830×705
Power supply V-Ph-Hz 380~415V-3-50Hz
Model MKS/D 08D 09D 10D 12D 15D
Drain pipe DN 25 25 25 25 25
Package dimension mm 1896×994×852 1896×1084×902 2136×1084×902 2136×1084×1007 2436×1164×1052
Net dimension mm 1700×830×705 1700×920×755 1940×920×755 1940×920×860 2240×1000×905
Power supply V-Ph-Hz 380~415V-3-50Hz
Note:
1. Cooling capacity is based on the following:
a) Water temperature is 7℃(inlet)/12℃(outlet);
b) Air entering condition is 27℃ DB/19.5℃ WB.
2. Heating capacity is based on the following:
a) Water temperature is 60℃(inlet)/50℃(outlet)
b) Air entering condition is 21℃ DB.

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Fresh air condition
Model MKS/D 02D 03D 04D 05D 06D 07D 08D 09D 10D 12D 15D
Air volume m3/h 2000 3000 4000 5000 6000 7000 8000 9000 10000 12000 15000
Standard
capacity
Rated cooling
capacity
kW 23.5 32.0 45.5 57.1 64.9 83.8 87.6 106.1 113.0 139.1 170.0
Rated heating
capacity
kW 27.3 35.6 52.0 72.6 84.0 97.2 112.0 123.1 140.0 161.4 210.0
Water flow
rate
L/s 1.12 1.53 2.17 2.73 3.10 4.00 4.19 5.07 5.40 6.65 8.12
External static
pressure
Pa 67 52 70 42 92 98 79 116 136 108 125
Fan motor
input
kW 0.37 0.55 0.75 1.10 1.50 1.10 1.50 2.20 2.20 3.00 4.00
Water
pressure drop
kPa 38 55 52 61 37 36 73 39 79 41 73
Chilled water
pipe
DN 40 40 40 40 40 40 50 50 50 50 50
Sound level DB 58.0 58.0 60.0 62.0 62.0 64.0 64.0 66.0 66.0 68.0 70.0
Net weight kg 90 120 145 160 180 190 205 235 260 270 350
High
capacity
Rated cooling
capacity
kW 28.4 42.5 56.7 70.9 84.5 98.9 113.0 126.9 141.0 170.4 213.0
Rated heating
capacity
kW 33.0 49.4 65.9 82.4 97.0 115.5 132.0 148.5 165.0 197.6 247.0
Water flow
rate
L/s 1.35 2.03 2.71 3.39 4.04 4.72 5.40 6.06 6.74 8.14 10.18
External static
pressure
Pa 227 212 230 202 252 258 239 286 306 278 305
Fan motor
input
kW 0.75 1.10 1.10 1.50 2.20 2.20 2.20 3.00 3.00 4.00 5.50
Water
pressure drop
kPa 54 77 58 58 62 59 46 46 69 57 76
Chilled water
pipe
DN 40 40 40 40 40 40 50 50 50 50 50
Sound level DB 58.9 58.1 61.9 63.0 63.3 65.4 65.5 67.0 67.8 69.6 71.8
Net weight kg 95 125 155 170 190 205 220 250 280 290 380

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Model MKS/D 02D 03D 04D 05D 06D 07D
Drain pipe DN 25 25 25 25 25 25
Package dimension mm 1066×914×702 1216×994×752 1496×994×752 1586×994×752 1786×994×752 1786×994×852
Net dimension mm 870×750×555 1020×830×605 1300×830×605 1390×830×605 1590×830×605 1590×830×705
Power supply V-Ph-Hz 380~415V-3-50Hz
Model MKS/D 08D 09D 10D 12D 15D
Drain pipe DN 25 25 25 25 25
Package dimension mm 1896×994×852 1896×1084×902 2136×1084×902 2136×1084×1007 2436×1164×1052
Net dimension mm 1700×830×705 1700×920×755 1940×920×755 1940×920×860 2240×1000×905
Power supply V-Ph-Hz 380~415V-3-50Hz
Note:
1. Cooling capacity is based on the following:
a) Water temperature is 7℃(inlet)/12℃(outlet);
b) Air entering condition is 35℃ DB/28℃ WB.
2. Heating capacity is based on the following:
a) Water temperature is 60℃(inlet)/50℃(outlet)
b) Air entering condition is 7℃ DB.

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2.2 Horizontal type
Return air condition
Model MKS/C 05W 06W 08W 10W 15W 20W 25W 30W 35W 40W
Air volume m3/h 5000 6000 8000 10000 15000 20000 25000 30000 35000 40000
4-row
Rated cooling capacity kW 28.3 34.6 50.8 63.2 91 119.3 149.3 179.2 209.1 238.9
Rated heating capacity kW 47.5 58.8 73.1 91.3 131.3 183.4 248.9 298.7 348.4 398.2
Water flow rate L/s 1.35 1.65 2.43 3.02 4.35 5.70 7.13 8.56 9.99 11.41
External static pressure Pa 96 68 78 112 125 210 318 273 432 405
Fan motor input kW 1.1 1.1 1.5 3 4 7.5 7.5 11 2*5.5 2*7.5
Water pressure drop kPa 20.2 25 30.7 30 35.5 28.1 34 53.3 40 41.2
Chilled water pipe DN 40 40 50 50 50 65 65 65 2*65 2*65
Sound level DB 59.5 60.3 63.1 63.5 66.1 70.4 70.2 73.3 73.8 76.2
Net weight kg 190 210 250 300 390 500 580 650 880 920
6-row
Rated cooling capacity kW 36.6 44.1 59.1 74.6 107 149 187 225 265 300
Rated heating capacity kW 56.4 67.7 90.2 112 169 224 279 335 391 447
Water flow rate L/s 1.75 2.11 2.82 3.56 5.11 7.12 8.93 10.75 12.66 14.33
External static
pressure
Pa 256 228 198 152 305 210 318 273 432 405
Fan motor
input
kW 1.5 2.2 2.2 3 5.5 7.5 7.5 11 2*7.5 2*7.5
Water pressure drop kPa 39.5 54 42.3 58 33 59 64 69 67 68
Chilled water pipe DN 40 40 50 50 65 65 80 80 2*65 2*65
Sound level DB 61.2 61.4 63.5 65.2 68.2 71.6 71.5 73.5 74.2 77.5
Net weight kg 230 270 273 325 480 620 685 765 950 1150

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Model MKS/C 05W 06W 08W 10W 15W
Drain pipe DN 25 25 25 25 25
Package
dimension
mm 1294×1264×980 1394×1264×980 1646×1314×1092 1864×1344×1112 2134×1364×1338
Net dimension mm 1100×1120×840 1200×1120×840 1450×1170×945 1650×1200×965 1940×1220×1195
Power supply V-Ph-Hz 380~415V-3-50Hz
Model MKS/C 20W 25W 30W 35W 40W
Drain pipe DN 25 25 25 25 25
Package
dimension
mm 2642×1502×1462 2792×1552×1662 2992×1602×1727 3042×2028×2082 3042×2028×2212
Net dimension mm 2440×1350×1310 2590×1400×1510 2790×1450×1580 2790×1880×1930 2790×1880×2060
Power supply V-Ph-Hz 380~415V-3-50Hz
Note:
1. Cooling capacity is based on the following:
a) Water temperature is 7℃(inlet)/12℃(outlet);
b) Air entering condition is 35℃ DB/28℃ WB.
2. Heating capacity is based on the following:
a) Water temperature is 60℃(inlet)/50℃(outlet)
b) Air entering condition is 7℃ DB..
3. 2* representative two coil

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Fresh air condition
Model MKS/C 05W 06W 08W 10W 15W 20W 25W 30W 35W 40W
Air volume m3/h 5000 6000 8000 10000 15000 20000 25000 30000 35000 40000
4-row
Rated cooling capacity kW 57.1 64.9 87.6 113.0 170.0 222.0 279.0 322.0 382.0 430.0
Rated heating capacity kW 72.6 84.0 112.0 140.0 210.0 280.0 350.0 412.0 490.0 560.0
Water flow rate L/s 2.7 3.1 4.2 5.4 8.1 10.6 13.3 15.4 18.3 20.5
External static pressure Pa 96 68 78 112 125 210 318 273 432 405
Fan motor input kW 1.1 1.1 1.5 3 4 7.5 7.5 11 2*5.5 2*7.5
Water pressure drop kPa 61 37 73 79 73 69 71 36 32 35
Chilled water pipe DN 40 40 50 50 50 65 65 65 2*65 2*65
Sound level DB 59.5 60.3 63.1 63.5 66.1 70.4 70.2 73.3 73.8 76.2
Net weight kg 190 210 250 300 390 500 580 650 880 920
6-row
Rated cooling capacity kW 70.9 84.5 113.0 141.0 213.0 279.0 350.0 418.0 494.0 557.0
Rated heating capacity kW 82.4 97.0 132.0 165.0 247.0 323.0 404.0 485.0 566.0 647.0
Water flow rate L/s 3.4 4.0 5.4 6.7 10.2 13.3 16.7 20.0 23.6 26.6
External static
pressure
Pa 256 228 198 152 305 210 318 273 432 405
Fan motor
input
kW 1.5 2.2 2.2 3 5.5 7.5 7.5 11 2*7.5 2*7.5
Water pressure drop kPa 58 62 46 69 76 66 83 77 67 77
Chilled water pipe DN 40 40 50 50 65 65 80 80 2*65 2*65
Sound level DB 61.2 61.4 63.5 65.2 68.2 71.6 71.5 73.5 74.2 77.5
Net weight kg 230 270 273 325 480 620 685 765 950 1150

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Model MKS/C 05W 06W 08W 10W 15W
Drain pipe DN 25 25 25 25 25
Package
dimension
mm 1294×1264×980 1394×1264×980 1646×1314×1092 1864×1344×1112 2134×1364×1338
Net dimension mm 1100×1120×840 1200×1120×840 1450×1170×945 1650×1200×965 1940×1220×1195
Power supply V-Ph-Hz 380~415V-3-50Hz
Model MKS/C 20W 25W 30W 35W 40W
Drain pipe DN 25 25 25 25 25
Package
dimension
mm 2642×1502×1462 2792×1552×1662 2992×1602×1727 3042×2028×2082 3042×2028×2212
Net dimension mm 2440×1350×1310 2590×1400×1510 2790×1450×1580 2790×1880×1930 2790×1880×2060
Power supply V-Ph-Hz 380~415V-3-50Hz
Note:
1. Cooling capacity is based on the following:
a) Water temperature is 7℃(inlet)/12℃(outlet);
b) Air entering condition is 35℃ DB/28℃ WB.
2. Heating capacity is based on the following:
a) Water temperature is 60℃(inlet)/50℃(outlet)
b) Air entering condition is 7℃ DB..
3. 2* representative two coil

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2.3 Vertical type
Return air condition
Model MKS/C 03L 04L 05L 06L 08L 10L 15L 20L 25L 30L 35L 40L
Air volume m3/h 3000 4000 5000 6000 8000 10000 15000 20000 25000 30000 35000 40000
4-row
Rated cooling
capacity
kW 17.1 22.8 28.3 34.6 50.8 58.9 91 113.7 149.3 179.2 209.1 238.9
Rated heating
capacity
kW 26.7 39.9 47.5 58.8 73.1 99.3 131.3 183.4 248.9 298.7 348.4 398.2
Water flow
rate
L/s 0.82 1.09 1.4 1.7 2.4 2.81 4.3 5.4 7.1 8.6 10.0 11.4
External static
pressure
Pa 52 79 96 68 118 112 125 152 218 173 235 193
Fan motor
input
kW 0.8 1.1 1.1 1.5 2.2 3.0 5.5 7.5 7.5 11.0 11.0 15.0
Water
pressure drop
kPa 35 52 20 25 31 30 36 28 34 53 40 41
Chilled water
pipe
DN 40 40 40 40 40 50 50 50 65 65 80 80
Sound level DB 57.1 58.2 60.5 61.4 63.2 64.5 67.6 70.5 70.7 73.1 73.6 76.2
Net weight kg 130 150 170 190 230 250 360 480 620 690 780 850
6-row
Rated cooling
capacity
kW 22.0 29.3 36.6 44.1 59.1 74.6 107.0 149.0 187.0 225.0 265.0 300.0
Rated heating
capacity
kW 33.8 45.1 56.4 67.7 90.2 112.0 169.0 224.0 279.0 335.0 391.0 447.0
Water flow
rate
L/s 1.05 1.40 1.7 2.1 2.8 3.6 5.1 7.1 8.9 10.8 12.7 14.3
External static
pressure
Pa 212 239 256 228 288 292 205 152 218 173 235 193
Fan motor
input
kW 1.1 1.5 2.2 2.2 3.0 4.0 5.5 7.5 7.5 11.0 15.0 15.0
Water
pressure drop
kPa 57 62 40 54 42 58 33 59 64 69 67 68
Chilled water
pipe
DN 40 40 40 40 40 50 50 50 65 65 80 80
Sound level DB 57.5 60.3 61.2 61.9 63.6 65.4 68.4 71.2 71.3 73.5 74.2 77.5
Net weight kg 140 162 185 210 255 290 410 540 680 760 860 940

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Model MKS/C 03L 04L 05L 06L 08L 10L
Drain pipe DN 25 25 25 25 25 25
Package dimension mm 1260×730×1290 1300×730×1440 1360×780×1610 1450×780×1660 1600×890×1840 1660×890×1990
Net dimension mm 1010×580×1100 1050×580×1250 1110×630×1420 1200×630×1470 1350×740×1650 1410×740×1800
Power supply V-Ph-Hz 380~415V-3-50Hz
Model MKS/C 15L 21L 24L 30L 35L 40L
Drain pipe DN 25 25 25 25 25 25
Package
dimension
mm 2190×960×2070 2670×1080×2170 3040×1180×2350 3040×1180×2540 3450×1220×2540 3650×1220×2540
Net
dimension
mm 1940×740×1880 2420×860×1980 2790×960×2160 2790×960×2360 3200×1000×2360 3400×1000×2360
Power supply V-Ph-Hz 380~415V-3-50Hz
Note:
1. Cooling capacity is based on the following:
a) Water temperature is 7℃(inlet)/12℃(outlet);
b) Air entering condition is 27℃ DB/19.5℃ WB.
2. Heating capacity is based on the following:
a) Water temperature is 60℃(inlet)/50℃(outlet)
b) Air entering condition is 21℃ DB.

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Fresh air condition
Model MKS/C 03L 04L 05L 06L 08L 10L 15L 20L 25L 30L 35L 40L
Air volume m3/h 3000 4000 5000 6000 8000 10000 15000 20000 25000 30000 35000 40000
4-row
Rated cooling
capacity
kW 32.0 45.5 57.1 64.9 87.6 113.0 170.0 222.0 279.0 322.0 382.0 430.0
Rated heating
capacity
kW 35.6 46.0 72.6 84.0 112.0 140.0 210.0 280.0 350.0 412.0 490.0 560.0
Water flow
rate
L/s 1.53 2.17 2.73 3.10 4.19 5.40 8.12 10.61 13.33 15.38 18.25 20.54
External static
pressure
Pa 52 79 96 68 118 112 125 152 218 173 235 193
Fan motor
input
kW 0.8 1.1 1.1 1.5 2.2 3.0 5.5 7.5 7.5 11.0 11.0 15.0
Water
pressure drop
kPa 46 13 61 37 73 79 73 69 71 36 32 35
Chilled water
pipe
DN 40 40 40 40 40 50 50 50 65 65 80 80
Sound level DB 57.1 58.2 60.5 61.4 63.2 64.5 67.6 70.5 70.7 73.1 73.6 76.2
Net weight kg 130 150 170 190 230 250 360 480 620 690 780 850
6-row
Rated cooling
capacity
kW 42.5 56.7 70.9 84.5 113.0 141.0 213.0 279.0 350.0 418.0 494.0 557.0
Rated heating
capacity
kW 49.4 65.9 82.4 97.0 132.0 165.0 247.0 323.0 404.0 485.0 566.0 647.0
Water flow
rate
L/s 2.03 2.71 3.39 4.04 5.40 6.74 10.18 13.33 16.72 19.97 23.60 26.61
External static
pressure
Pa 212 239 256 228 288 292 205 152 218 173 235 193
Fan motor
input
kW 1.1 1.5 2.2 2.2 3.0 4.0 5.5 7.5 7.5 11.0 15.0 15.0
Water
pressure drop
kPa 47 24 58 62 46 69 76 66 83 77 67 77
Chilled water
pipe
DN 40 40 40 40 40 50 50 50 65 65 80 80
Sound level DB 57.5 60.3 61.2 61.9 63.6 65.4 68.4 71.2 71.3 73.5 74.2 77.5
Net weight kg 140 162 185 210 255 290 410 540 680 760 860 940

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Model MKS/C 03L 04L 05L 06L 08L 10L
Drain pipe DN 25 25 25 25 25 25
Package dimension mm 1260×730×1290 1300×730×1440 1360×780×1610 1450×780×1660 1600×890×1840 1660×890×1990
Net dimension mm 1010×580×1100 1050×580×1250 1110×630×1420 1200×630×1470 1350×740×1650 1410×740×1800
Power supply V-Ph-Hz 380~415V-3-50Hz
Model MKS/C 15L 21L 24L 30L 35L 40L
Drain pipe DN 25 25 25 25 25 25
Package
dimension
mm 2190×960×2070 2670×1080×2170 3040×1180×2350 3040×1180×2540 3450×1220×2540 3650×1220×2540
Net dimension mm 1940×740×1880 2420×860×1980 2790×960×2160 2790×960×2360 3200×1000×2360 3400×1000×2360
Power supply V-Ph-Hz 380~415V-3-50Hz
Note:
1. Cooling capacity is based on the following:
a) Water temperature is 7℃(inlet)/12℃(outlet);
b) Air entering condition is 35℃ DB/28℃ WB.
2. Heating capacity is based on the following:
a) Water temperature is 60℃(inlet)/50℃(outlet)
b) Air entering condition is 7℃ DB.

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3. Dimension
3.1 Suspended type

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3.2 Horizontal type