5
The service rules of the R407C product
The service rules of the R410A product
1. The service rules of the new refrigerant R407C product
Midea uses the green refrigerant R407C firstly in China.
Its thermal characters are similar to R22, but there is little difference between them.
1.1 The main difference between R407C and R22:
1.2 Service precautions:
1.2.1 Because R407C is a mixture composed of three kinds of matter, when vapor phase and liquid
phase coexist, the component of the vapor phase is different from the liquid phase. When we fill
the refrigerant, we must ensure to fill it in liquid phase, in order to maintain the stability of the
character.
1.2.2
The leakage of the refrigerant is from vapor side or liquid side, and the leakage from vapor side
could make the component change and impact the character seriously. So when the amount of
the leakage is up to 5%, we need discharge all refrigerant in the system, and fill liquid
refrigerant according to amount in nameplate.
1.2.3 Because the lubricant fit for refrigerant R407C is ester refrigerating engine oil (POE) or ether
refrigerating engine oil (PVE). The mineral lubricant fit for refrigerant CFC and HCFC is weak in
consistent with the HFC, and it doesn’t fit for the refrigerant HFC. So when the compressor
using new refrigerant R407C is worn out, to replace it by compressor of CFC or HCFC is
forbidden.
1.2.4 When the connection of the refrigerant pipe is finished, before the system start up we should
vacuum the indoor unit by cut-off valve or discharge the indoor unit air by refrigerant R407C
bottle. Discharged the air in system by outdoor unit refrigerant is forbidden.
1.2.5 Ester oil could adsorb the water in the air. In order to removemoisture in refrigeration system,
avoid capillary jammed by ice and the ester lubricant oil decomposed with water, we use
desiccant in system. Artificial zeolite (molecular sieve R etc.) is the effective water sorbent.
Toavoid absorb refrigerant but only absorbmoisture, we use the molecular sieve whose
aperture is smaller than the molecule of the refrigerant. For R407C we should adopt XH-11
rather than XH-9AK and 4A-NRG.
1.2.6 Because the corrosion of R407C and POE to high molecular material is different from R22 and
mineral oil, the airproof material inside high/low pressure valve and foul-way valve needs to be
changed in refrigeration system, such as R407C, polyurethane rubber etc. The high/low
pressure valve and four-way valve which are fit for R22 couldn’t be used in service.
1.2.7
When there is leakage, filling with other kind of refrigerant is forbidden.
1.2.8 When we need to vacuum the system, we should use the special quick joint, but use the quick
joint of other refrigerant is forbidden lest pollute by mixing refrigerant. The time for vacuuming is
R407C
R22
Component
HFC32/125/134a
HCFC22
The ratio of mix Wt
%
23/25/52
100
The saturation liquid density Kg/m
3
1136 1191
Normal pressure kj/kg.k
0.835
0.622
Specific heat
The saturation liquid kj/kg.k
1.554
1.256
Evaporating pressure kpa
499
498
Condensing pressure kpa
2112
1943
Temperature slippage
℃
4.3-7.1
0
Heating capacity w
92-97
100
Input power w
106
100
COP 97
100
The consistent with the oil
Fat oil
Mineral oil
Содержание CE-KF20GW/N1Y-H
Страница 3: ...1 Features 1 1Compact design 1 2High efficiency and quiet operation 1 3A class energy level 245...
Страница 6: ...3 4 Outdoor unit MSH 07CRN1 MSH 07HRN1 3 5 Outdoor unit MSH 09CRN1 MSH 09HRN1 248...
Страница 7: ...3 6 Outdoor unit MSH 12CRN1 MSH 12HRN1 530 315 290 750 110 62 590 285 249...
Страница 8: ...4 Refrigeration cycle diagram 250...
Страница 35: ...229 1 Features 1 1Compact design 1 2High efficiency and quiet operation...
Страница 37: ...231 3 Dimensions 3 1 Indoor unit 3 2 Outdoor unit...
Страница 40: ...234 6 Wiring diagram Indoor unit Outdoor unit...
Страница 51: ...1 Features 1 1Compact design 1 2High efficiency and quiet operation 215...
Страница 53: ...3 Dimensions 3 1 Indoor unit 3 2 Outdoor unit 217...
Страница 54: ...4 Refrigeration cycle diagram 218...
Страница 70: ...203 3 Dimensions 1 Indoor unit 7 9K 2 Indoor Unit 12K 3 Outdoor unit...
Страница 75: ...208 7 Wiring Diagram 7 1 Indoor unit 7 9K 7 2 Indoor unit 12K...
Страница 76: ...209 7 3 Outdoor unit M2OA 18HRIN2 Outdoor unit M3OA 27HRIN2...
Страница 85: ...182 3 Dimensions 3 1 Indoor Unit MSG 09HRI MSG 07 09HRIN2 3 2 Indoor Unit MSG 12HR1...
Страница 86: ...183 3 3 Indoor Unit MSG 12HRIN2 3 4 Outdoor Unit...
Страница 90: ...187 Outdoor unit MSG 09HRI MSG 12HRI S N L...
Страница 91: ...188 Indoor unit MSG 12HRIN2 Outdoor unit MSG 07HRIN2 MSG 09HRIN2 MSG 12HRIN2 N L S...
Страница 101: ...1 Features 1 1Compact design 1 2High efficiency and quiet operation 158...
Страница 103: ...3 Dimensions 3 1 Indoor unit MSG1 07 09C H RN2 3 2 Indoor unit MSG1 12C H RN2 280 160...
Страница 104: ...3 3 Outdoor unit MSG1 07C H RN2 3 4 Outdoor unit MSG1 09C H RN2 161...
Страница 105: ...3 5 Outdoor unit MSG1 12C H RN2 530 315 290 750 110 62 590 285 162...
Страница 110: ...6 2 Heating cooling 6 2 1 MSG1 07HRN2 MSG1 09HRN2 167...
Страница 111: ...6 2 2 MSG 12HRN2 168...
Страница 122: ...1 Features 1 1Compact design 1 2High efficiency and quiet operation 140...
Страница 126: ...3 Dimensions 3 1 Indoor unit 3 2 Outdoor unit 144...
Страница 130: ...6 2 Heating cooling 148...
Страница 144: ...3 Dimensions 3 1 Indoor unit 7000Btu h 9000Btu h 12000Btu h 132...
Страница 145: ...3 2 Outdoor unit 133...
Страница 149: ...6 2Heating cooling 7000 9000Btu h Indoor unit 12000Btu h indoor unit 7000Btu h 12000Btu h outdoor unit 137...
Страница 153: ...117 3 Dimensions 3 1 Indoor unit 3 2 Outdoor unit 62 77 860 895 589 6 142 9 302 328 350...
Страница 157: ...121 6 2 Heat pump MSG 36HR 220 240V 50Hz and 380V 50Hz MSG 36HR 220 240V 50Hz and 380V 50Hz A1 A2 MSG 36HR 380V 50Hz...
Страница 168: ...3 Dimensions 3 1 Indoor unit 3 2 Outdoor unit 12 5 102...
Страница 171: ...6 Wiring diagram 6 1 MSG 24CR MSG 30CR MSG 24CRN2 MSG 30CRN2 220V 1Ph A2 A1 105...
Страница 172: ...6 2 MSG 24HR MSG 30HR MSG 24HRN2 MSG 30HRN2 220V 1Ph A1 A2 106...
Страница 173: ...6 2 MSG 30CR MSG 30CRN2 380V 3Ph 107...
Страница 174: ...6 2 MSG 30HR MSG 30HRN2 380V 3Ph 108...
Страница 182: ...1 Features 1 1Compact design 1 2High efficiency and quiet operation 66...
Страница 189: ...3 Dimensions 3 1 Indoor unit MSG 05 07 09C H R N2 MSG 12C H R 3 2 Indoor unit MSG 12C H R N2 280 73...
Страница 190: ...3 3 Indoor unit MSG 18 21C H R N2 3 4 Outdoor unit MSG 05 07 09C H R N2 74...
Страница 191: ...3 5 Outdoor unit MSG 12C H R N2 MSG 18C H R 3 6 Outdoor unit MSG 18C H RN2 530 315 290 750 110 62 590 285 75...
Страница 192: ...3 7 Outdoor unit MSG 21C H R N2 12 5 76...
Страница 200: ...6 2 Heating cooling 6 2 1 MSG 07HR MSG 07HRN2 MSG 07HR MSG 07HRN2 MSG 09HR MSG 09HRN2 MSG 12HR 84...
Страница 201: ...6 2 2 MSG 12HR B TYPE MSG 12HRN2 85...
Страница 220: ...3 1 4 Indoor unit 24000 30000Btu h 3 2 Outdoor unit 3 2 1 Outdoor unit 7000 9000Btu h 3 2 2 Outdoor unit 12000Btu h 52...
Страница 221: ...3 2 3 Outdoor unit 18000Btu h 530 315 290 750 110 62 590 285 3 2 4 Outdoor unit 21000 30000Btu h 12 5 53...
Страница 226: ...6 1 5 MSG 30CRN2 380V 50Hz A N 1 2 3 4 58...
Страница 227: ...6 2 1 MSB 07HRN2 MSB 09HRN2 6 2 2 MSB 12HRN2 59...
Страница 229: ...6 2 4 MSB 21HRN2 61...
Страница 230: ...6 2 5 MSB 24HRN2 MSB 30HRN2 A1 A2 62...
Страница 231: ...6 2 6 MSB 30HRN2 380V 50Hz 63...
Страница 236: ...3 Dimensions 3 1 Indoor unit 18000 21000Btu h 3 2 Indoor unit 24000 30000Btu h 31...
Страница 237: ...3 3 Outdoor unit 18000 3 4 Indoor unit 21000 30000Btu h 12 5 32...
Страница 240: ...6 Wiring diagram 6 1 MSB 18CR MSB 21CR 35...
Страница 241: ...6 2 MSB 24CR MSB 30CR 36...
Страница 243: ...6 4 MSB 21HR 38...
Страница 244: ...6 5 MSB 24HR MSB 30HR A1 A2 39...
Страница 254: ...12 3 Dimensions 3 1 Indoor unit 5000 9000Btu h 12000Btu h...
Страница 255: ...13 3 2 Outdoor unit 5000 9000Btu h 3 3 Outdoor unit 12000Btu h...
Страница 258: ...16 6 Wiring diagram 6 1 Cooling only 5000 9000Btu h 12000Btu h...
Страница 260: ...18 6 2 Heating cooling 5000 9000Btu h 12000Btu h...
Страница 261: ...19 Outdoor unit...
Страница 280: ...3 Dimensions 3 1 Indoor unit MSH 09HRDN1 3 2 Indoor unit MSH 12HRDN1 279...
Страница 281: ...3 4 Outdoor unit MSH 09HRDN1 MSH 12HRDN1 530 315 290 750 110 62 590 285 280...
Страница 282: ...4 Refrigeration cycle diagram 281...
Страница 308: ...1 Features 1 3Compact design 1 4 ation High efficiency and quiet oper...
Страница 312: ......
Страница 313: ...4 Refrigeration cycle diagram...
Страница 316: ......
Страница 318: ......
Страница 332: ...2 1 Features 1 1Compact design 1 2High efficiency and quiet operation...
Страница 335: ...3 Dimensions 3 1 Indoor unit MSH 07CR MSH 07HR MSH 09CR MSH 09HR 3 2 Indoor unit MSH 12CR MSH 12HR 5...
Страница 336: ...3 4 Outdoor unit MSH 07CR MSH 07HR MSH 09CR MSH 09HR 3 5 Outdoor unit MSH 12CR MSH 12HR 6...
Страница 337: ...4 Refrigeration cycle diagram 7...
Страница 345: ...7 2 1 2 MSH 12CR 15...
Страница 346: ...7 2 2 Heating cooling 7 2 2 1 MSH 07HR MSH 09HR 16...
Страница 347: ...7 2 2 2 MSH 12HR 17...