Midea M thermal Mono Series Engineering Data
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Midea M thermal Mono Series Engineering Data

Commercial air conditioners
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Commercial Air Conditioners
Midea CAC Confidential

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  • Page 1 Commercial Air Conditioners Engineering Data M thermal Mono Series Midea CAC Confidential...
  • Page 2 M thermal Mono CONTENTS Part 1 General Information ................3 Part 2 Engineering Data ................15 Part 3 Installation and Field Settings ............67 202005 Midea CAC Confidential...
  • Page 3 M thermal Mono 202005 Midea CAC Confidential...
  • Page 4 M thermal Mono Part 1 General Information 1 M thermal Mono System ................4 2 Unit Capacities ................... 6 3 Nomenclature .................... 6 4 System Design and Unit Selection .............. 7 5 Typical Applications ................... 9 202005 Midea CAC Confidential...
  • Page 5 The backup electric heater also serves as a backup in case of heat pump malfunction and for anti- freeze protection of the outside water piping in winter. 202005 Midea CAC Confidential...
  • Page 6 1-1.2), depending on the system settings, either the auxiliary heat source supplies the required additional heating capacity or the heat pump does not run and the auxiliary heat source covers the required capacity.  Enables selection of lower capacity heat pump.  Ideal for refurbishments and upgrades. Figure 1-1.2: System configurations 202005 Midea CAC Confidential...
  • Page 7 N8: R32 Power Supply R: 3-phase, 380-415V, 50Hz Omitted: 1-phase, 220-240V, 50Hz Compressor and fan motor types D2: All DC Unit category W: Outdoor unit Capacity index The capacity in kW Inverter Mono Heat pump Midea 202005 Midea CAC Confidential...
  • Page 8 If the outdoor unit selection is to be based on total heating load and total cooling load, select Mono units which satisfy not only the total heating load requirements but also the total cooling load requirements. 202005 Midea CAC Confidential...
  • Page 9  Connecting room thermostats (field supplied) to the hydronic system helps prevent excessive space heating by stopping the outdoor unit and circulator pump when the room temperature is above the thermostat set point. 202005 Midea CAC Confidential...
  • Page 10 (Accessory) T1: Water flow temperature sensor Auxiliary heat source (Field supply) (Optional) Expansion vessel (Field supply) Notes: The example is just for application illustration; please confirm the exact installation method according to the installation manual. 202005 Midea CAC Confidential...
  • Page 11 Mono unit but to a motorized valve. Each room’s temperature is regulated by the motorized valve on its water circuit. Domestic hot water is supplied from the domestic hot water tank connected to the Mono unit. A bypass valve is required. 202005 Midea CAC Confidential...
  • Page 12 “HL” open, system turns OFF. The circulation pumps operation When the system is ON, which means any “HL” of all the thermostats closes, P_o(6) starts running; When the system is OFF, which means all “HL” close, P_o (6) stops running. 202005 Midea CAC Confidential...
  • Page 13 1) When the system is in cooling mode, which means any “CL” of all the thermostats closes, SV2(7) keeps OFF, P_o(6) starts running; 2) When the system is in heating mode, which means one or more “HL” close and all “CL” open, SV2(7) keeps ON, P_o(6) starts running. 202005 Midea CAC Confidential...
  • Page 14 ON. When all “CL” open, zone2 turns OFF. Target temperature is set on the user interface; Zone 2 can only operate in heating mode. When cooling mode is set on the user interface, zone2 keeps in OFF status. 202005 Midea CAC Confidential...
  • Page 15 The radiators are directly connected to the unit water circuit and the floor heating loops are after the mixing station. The mixing station is controlled by the unit. 202005 Midea CAC Confidential...
  • Page 16 2 Dimensions and Center of Gravity ............19 3 Piping Diagrams ..................21 4 Wiring Diagrams ..................23 5 Capacity Tables..................29 6 Operating Limits ..................57 7 Hydronic Performance ................59 8 Sound Levels .................... 60 9 Accessories ....................66 202005 Midea CAC Confidential...
  • Page 17 DHW: Domestic hot water Relevant EU standards and legislation: EN14511; EN14825; EN50564; EN12102; (EU) No 811/2013; (EU) No 813/2013; OJ 2014/C 207/02. Seasonal space heating energy efficiency class tests in average climate conditions. Sound power test condition：EN12102-1 202005 Midea CAC Confidential...
  • Page 18 DHW: Domestic hot water Relevant EU standards and legislation: EN14511; EN14825; EN50564; EN12102; (EU) No 811/2013; (EU) No 813/2013; OJ 2014/C 207/02. Seasonal space heating energy efficiency class tests in average climate conditions. Sound power test condition：EN12102-1 202005 Midea CAC Confidential...
  • Page 19 DHW: Domestic hot water Relevant EU standards and legislation: EN14511; EN14825; EN50564; EN12102; (EU) No 811/2013; (EU) No 813/2013; OJ 2014/C 207/02. Seasonal space heating energy efficiency class tests in average climate conditions. Sound power test condition：EN12102-1 202005 Midea CAC Confidential...
  • Page 20 M thermal Mono 2 Dimensions and Center of Gravity MHC-V4W/D2N8-B / MHC-V6W/D2N8-B / MHC-V8W/D2N8-B/ MHC-V10W/D2N8-B Figure 2-2.1: MHC-V4(6, 8, 10)W/D2N8-B dimensions and center of gravity (unit: mm) unit： Model 4/6kW 202005 Midea CAC Confidential...
  • Page 21 M thermal Mono MHC-V12W/D2N8-B / MHC-V14W/D2N8-B / MHC-V16W/D2N8-B MHC-V12W/D2RN8-B / MHC-V14W/D2RN8-B / MHC-V16W/D2RN8-B Figure 2-2.2: MHC-V12( 14,16)W/D2(R)N8 dimensions and center of gravity (unit: mm) unit： Model 8/10kW 12-16kW 1Ph 12-16kW 3Ph 202005 Midea CAC Confidential...
  • Page 22 Safety valve Air purge valve Pump Twout Flow switch Evaporator Manometer Expansion vessel Twin Filter Pressure sensor Filter DC motor High-pressure switch Low-pressure switch Suction temp. sensor Condenser Discharge temp. sensor Single way solenoid valve Capillary Accumulator Compressor 202005 Midea CAC Confidential...
  • Page 23 Safety valve Air purge valve Pump Twout Flow switch Evaporator Manometer Expansion vessel Twin Filter Pressure sensor Filter DC motor High-pressure switch Low-pressure switch Suction temp. sensor Condenser Discharge temp. sensor Single way solenoid valve Capillary Accumulator Compressor 202005 Midea CAC Confidential...
  • Page 24 M thermal Mono 4 Wiring Diagrams MHC-V4W/D2N8-B / MHC-V6W/D2N8-B / MHC-V8W/D2N8-B/ MHC-V10W/D2N8-B Figure 2-4.1: MHC-V4(6, 8, 10)W/D2N8-B wiring diagram Figure continued on next page … 202005 Midea CAC Confidential...
  • Page 25 M thermal Mono Figure 2-4.1: MHC-V4(6, 8, 10)W/D2N8-B wiring diagram (continued) 202005 Midea CAC Confidential...
  • Page 26 M thermal Mono MHC-V12W/D2N8-B / MHC-V14W/D2N8-B / MHC-V16W/D2N8-B Figure 2-4.2: MHC-V12(14, 16)W/D2N8-B wiring diagram Figure continued on next page … 202005 Midea CAC Confidential...
  • Page 27 M thermal Mono Figure 2-4.2: MHC-V12(14, 16)W/D2N8-B wiring diagram (continued) 202005 Midea CAC Confidential...
  • Page 28 M thermal Mono MHC-V12W/D2RN8-B / MHC-V14W/D2RN8-B / MHC-V16W/D2RN8-B Figure 2-5.3 MHC-V12(14, 16)W/D2RN8-B wiring diagram Figure continued on next page … 202005 Midea CAC Confidential...
  • Page 29 M thermal Mono Figure 2-4.3 MHC-V12(14, 16)W/D2RN8-B wiring diagram (continued) 202005 Midea CAC Confidential...
  • Page 30 5113 6.22 5094 5.46 5593 5.89 5633 4.88 1155 2814 6.58 3007 5.78 3878 6.23 3796 5.12 5768 7.21 5595 5.85 5910 6.06 6045 5.25 1151 norm 5237 7.85 5121 6.27 5473 6.55 5668 5.53 1024 202005 Midea CAC Confidential...
  • Page 31 4638 3.12 1485 5019 3.07 1635 4665 2.65 1757 3337 2.16 1543 3220 3.23 3646 3.15 1158 3557 2.75 1295 2705 2.26 1195 5297 3.23 1641 5699 3.16 1804 5267 2.69 1955 4494 2.22 2022 202005 Midea CAC Confidential...
  • Page 32 6001 5.20 1153 norm 5657 5.67 4861 5.96 6250 5.38 1161 norm 5941 5.90 1007 5188 6.20 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 33 6134 6.75 6155 5.53 1113 6758 4.99 1355 3974 8.24 4222 7.15 4852 5.85 5189 5.24 6832 8.02 6831 7.27 6556 6.01 1091 7049 5.05 1397 norm 6236 8.79 6286 7.84 6104 6.55 6645 5.35 1241 202005 Midea CAC Confidential...
  • Page 34 6474 3.44 1883 6036 3.11 1942 5763 2.65 2175 4542 2.34 1942 4225 3.57 1183 4373 3.23 1354 4201 2.75 1525 3551 2.43 1463 7236 3.67 1969 6984 3.30 2117 6013 2.70 2229 6101 2.56 2386 202005 Midea CAC Confidential...
  • Page 35 5.68 1220 norm 6530 6.19 1056 5612 6.50 7193 5.96 1207 norm 6838 6.54 1046 5970 6.87 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 36 11.55 8169 9.52 8009 8.18 8472 6.86 1234 5179 12.21 5309 10.07 5513 8.66 6678 7.26 9181 11.03 8489 9.16 8173 7.78 1051 8849 6.84 1294 norm 8229 12.29 7749 10.04 7521 8.39 8239 7.46 1105 202005 Midea CAC Confidential...
  • Page 37 6893 2.81 2451 4920 2.16 2275 4726 4.11 1151 4993 3.65 1370 5173 3.51 1473 5024 2.92 1719 3802 2.22 1716 8909 4.38 2034 8406 3.77 2230 8316 3.55 2343 7678 3.09 2489 5708 2.39 2393 202005 Midea CAC Confidential...
  • Page 38 1471 9765 6.08 1606 norm 9358 7.40 1264 9283 6.67 1392 7834 7.78 1007 8105 7.01 1157 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 39 8871 5.43 1634 5838 9.72 6186 8.07 7172 6.87 1044 6811 5.70 1195 9073 8.79 1097 8895 7.95 1119 8852 6.72 1317 9923 6.15 1613 norm 8282 9.63 8186 8.57 8242 7.32 1125 9354 6.53 1434 202005 Midea CAC Confidential...
  • Page 40 8860 3.39 2617 8337 3.14 2651 7600 2.77 2742 5664 2.16 2619 5782 3.52 1644 6041 3.27 1848 5540 2.88 1923 4376 2.22 1975 9780 3.80 2577 9764 3.54 2757 8433 3.13 2696 6565 2.43 2705 202005 Midea CAC Confidential...
  • Page 41 9587 6.02 1592 8238 6.33 1302 10476 6.25 1676 norm 9959 6.85 1453 8695 7.20 1207 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 42 5.93 1891 5854 9.58 5786 8.54 7063 7.36 8391 6.16 1361 14199 8.75 1623 14347 7.76 1849 14693 6.63 2217 14734 5.59 2634 norm 11231 9.66 1163 11047 8.55 1292 11461 8.15 1407 11360 5.88 1932 202005 Midea CAC Confidential...
  • Page 43 10100 3.44 2934 9864 3.13 3156 9920 2.74 3621 9479 2.49 3802 7758 3.63 2135 8303 3.27 2540 8676 2.87 3026 8275 2.61 3173 13424 3.60 3733 12049 3.03 3974 12291 2.85 4320 11733 2.65 4420 202005 Midea CAC Confidential...
  • Page 44 11464 5.80 1977 9599 6.10 1574 14782 5.75 2571 norm 11900 6.22 1914 10000 6.54 1529 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 45 2062 6047 8.95 5965 7.15 7166 6.54 1096 8416 5.67 1484 14809 8.21 1803 14857 7.09 2096 15060 6.22 2423 14997 5.36 2797 norm 11714 9.07 1292 11440 7.81 1465 11747 7.64 1538 11562 5.63 2052 202005 Midea CAC Confidential...
  • Page 46 11420 3.46 3302 10641 3.21 3312 10309 2.78 3711 9111 2.35 3876 8772 3.65 2403 8957 3.36 2666 9016 2.91 3101 7954 2.46 3235 15342 3.51 4370 12994 3.24 4016 12737 2.84 4480 11862 2.41 4965 202005 Midea CAC Confidential...
  • Page 47 11813 5.78 2044 9891 6.08 1628 15152 5.54 2734 norm 12197 5.99 2035 10250 6.30 1626 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 48 2240 6636 8.45 6543 8.07 7992 6.82 1172 8980 5.57 1612 15461 8.21 1883 15369 7.68 2000 15905 6.49 2450 15346 5.46 2811 norm 12230 9.06 1349 11834 8.47 1397 12406 7.98 1555 11832 5.74 2062 202005 Midea CAC Confidential...
  • Page 49 12448 3.41 3656 12066 3.25 3713 11180 2.88 3878 9918 2.52 3934 9561 3.59 2660 10157 3.40 2988 9777 3.02 3241 8658 2.56 3380 17825 3.72 4794 17462 3.42 5106 14745 3.06 4825 12474 2.60 4798 202005 Midea CAC Confidential...
  • Page 50 12305 5.61 2193 10304 5.90 1746 15888 5.41 2937 norm 12789 5.85 2186 10748 6.15 1747 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 51 3.43 1179 5037 4.04 1245 5969 5.18 1152 2.38 1429 2.68 2111 3.57 2565 4.17 3803 5.38 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 52 3.43 1179 5037 4.04 1245 5969 5.18 1152 2.38 1429 2.68 2111 3.57 2565 4.17 3803 5.38 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 53 6977 4.06 1719 7943 4.41 1801 1431 2.37 2122 2.76 2801 3.46 3554 4.18 5061 4.58 1105 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 54 6977 4.06 1719 7943 4.41 1801 1431 2.37 2122 2.76 2801 3.46 3554 4.18 5061 4.58 1105 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 55 8444 3.66 2304 1460 1.48 2296 2.03 1132 3048 2.72 1121 3718 3.04 1221 5380 3.80 1415 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 56 8444 3.66 2304 1460 1.48 2296 2.03 1132 3048 2.72 1121 3718 3.04 1221 5380 3.80 1415 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 57 3.48 2717 1679 1.41 1191 2756 1.93 1429 3749 2.58 1452 4573 2.89 1581 6026 3.61 1669 Abbreviations: LWT: Leaving water temperature (°C ) CL: Capacity level CAP: Total heating capacity (W) PI: Power input (W) 202005 Midea CAC Confidential...
  • Page 58 M thermal Mono 6 Operating Limits Figure 2-6.1: Heating operating limits Figure 2-6.2: Cooling operating limits 202005 Midea CAC Confidential...
  • Page 59 IBH: Backup electric heater AHS: Additional heat source Notes: IBH/AHS only Water flow temperature drops or rises interval If IBH/AHS setting is valid, only IBH/AHS turns on; If IBH/AHS setting is invalid, only heat pump turns on 202005 Midea CAC Confidential...
  • Page 60 Figure 2-7.1: MHC-V4(6, 8, 10)W/D2N8-B hydronic performance water flow（m3/h） Abbreviations: ESP: External static pressure MHC-V12W/D2N8-B / MHC-V14W/D2N8-B / MHC-V16W/D2N8-B MHC-V12W/D2RN8-B / MHC-V14W/D2RN8-B / MHC-V16W/D2RN8-B Figure 2-7.2: MHC-V12( 14,16)W/D2(R)N8 hydronic performance water flow（m3/h） Abbreviations: ESP: External static pressure 202005 Midea CAC Confidential...
  • Page 61 Outdoor air temperature 7⁰C DB, 85% R.H.; EWT 30⁰C, LWT 35⁰C. Free compressor frequency. Outdoor air temperature 7⁰C DB, 85% R.H.; EWT 47⁰C, LWT 55⁰C. Free compressor frequency. 202005 Midea CAC Confidential...
  • Page 62 Outdoor air temperature 7⁰C DB, NR-20 85% R.H.; EWT 40⁰C, LWT 45⁰C. NR-10 Heating in rated frequency NR-0 Outdoor air temperature 7⁰C DB, 31.5 1000 2000 4000 8000 85% R.H.; EWT 47⁰C, LWT 55⁰C. Octave band center frequency (Hz) 202005 Midea CAC Confidential...
  • Page 63 Outdoor air temperature 7⁰C DB, NR-10 85% R.H.; EWT 40⁰C, LWT 45⁰C. NR-0 31.5 1000 2000 4000 8000 Heating in rated frequency Outdoor air temperature 7⁰C DB, Octave band center frequency (Hz) 85% R.H.; EWT 47⁰C, LWT 55⁰C. 202005 Midea CAC Confidential...
  • Page 64 Outdoor air temperature 7⁰C DB, NR-10 85% R.H.; EWT 40⁰C, LWT 45⁰C. NR-0 31.5 1000 2000 4000 8000 Heating in rated frequency Outdoor air temperature 7⁰C DB, Octave band center frequency (Hz) 85% R.H.; EWT 47⁰C, LWT 55⁰C. 202005 Midea CAC Confidential...
  • Page 65 Outdoor air temperature 7⁰C DB, NR-10 85% R.H.; EWT 40⁰C, LWT 45⁰C. NR-0 31.5 1000 2000 4000 8000 Heating in rated frequency Outdoor air temperature 7⁰C DB, Octave band center frequency (Hz) 85% R.H.; EWT 47⁰C, LWT 55⁰C. 202005 Midea CAC Confidential...
  • Page 66 Outdoor air temperature 7⁰C 31.5 1000 2000 4000 8000 DB, 85% R.H.; EWT 40⁰C, LWT Octave band center frequency (Hz) 45⁰C. Heating in rated frequency Outdoor air temperature 7⁰C DB, 85% R.H.; EWT 47⁰C, LWT 55⁰C. 202005 Midea CAC Confidential...
  • Page 67 User interface owner’s manual Technical data manual Y-shaped filter Water outlet connection pipe assembly Wired controller Tighten belt for customer wiring use Thermistor for domestic hot water tank or additional heating source Extension wire for T5 202005 Midea CAC Confidential...
  • Page 68 DIP Switch Settings ................82 Internal Circulation Pump ..............82 User Interface Field Settings ..............83 Operation parameter ................. 101 Network Configuration Guidelines ............. 102 10 Climate Related Curves ..............106 11 Error Code Table ................109 202005 Midea CAC Confidential...
  • Page 69 The information contained in this Engineering Data Book may primarily be of use during the system design stage of a Midea M thermal Mono project. Additional important information which may primarily be of use during field installation has been placed in boxes, such as the example below, titled “Notes for installers”.
  • Page 70 The hook and barycenter of the unit should be on a line in vertical direction to prevent improper inclination Make the rope go through the lifting holes from both the right and left sides in the wooden collet 202005 Midea CAC Confidential...
  • Page 71 If turn the air outlet side toward the building's wall, fence or screen. Make sure there is enough room to do the installation Table 3-2.1: Installation room Figure 3-2.3: Installation room illustration requirement (Unit: mm) Model A(mm) ≥300 4-6KW ≥300 8-16KW Model B(mm) ≥1000 4-6KW ≥1500 8-16KW 202005 Midea CAC Confidential...
  • Page 72 Fix the unit securely to foundation by means of the Φ10 expansion bolt. It is best to screw in the foundation bolts until their length is 20 mm from the foundation surface. Figure 3-2.5: Outdoor unit typical concrete base structure design (unit: mm) 202005 Midea CAC Confidential...
  • Page 73 Figure 3-2.8: Installation with obstacles in front of the unit Table 3-2.2: Minimum spacing from obstacles in front of the unit Model A(mm) ≥1000 4-6KW ≥1500 8-16KW 202005 Midea CAC Confidential...
  • Page 74 Figure 3-2.12: Remove the transportation support 2.10 Transportation support For 12/14/16kW model, there is a transportation support which is used to protect tubes from breaking during transportation and this support should be taken off before turning on the heat pump. 202005 Midea CAC Confidential...
  • Page 75 For 1-phase 12~16kW and 3-phase 12~16kW units, this value is 72L, for 5~9kW units, this value is 30 L. Calculating the pre-pressure of the expansion vessel: The pre-pressure (Pg) to be set depends on the maximum installation height difference (H) and is calculated as Pg(bar)=(H(m)/10+0.3) bar 202005 Midea CAC Confidential...
  • Page 76 Cover the pipe end when inserting it through a wall to prevent dust and dirt entering. Use a good thread sealant for sealing the connections. The sealing must be able to withstand the pressures and temperatures of the system. 202005 Midea CAC Confidential...
  • Page 77 It is of extreme importance: That the water treatment is correctly executed by a qualified water specialist. That a glycol with corrosion inhibitors is selected to counteract acids formed by the oxidation of glycols. 202005 Midea CAC Confidential...
  • Page 78 If the outdoor ambient temperature is higher than 30°C and the humidity is higher than RH 80%, the thickness of the sealing materials should be at least 20mm in order to avoid condensation on the surface of the seal. 202005 Midea CAC Confidential...
  • Page 79 High voltage wire hole Low voltage wire hole Drainage pipe hole Water inlet Water outlet Figure 3-4.2: Wiring hole for 8~16kW models Legend High voltage wire hole Low voltage wire hole Drainage pipe hole Water outlet Water inlet 202005 Midea CAC Confidential...
  • Page 80 Follow the electric wiring diagrams for electrical wiring works. Refer to Figure 2-4.1, Figure 2-4.2 and Figure 2-4.3 in part 2, 4 “Wiring Diagram”. Install the wires and fix the cover firmly so that the cover may be fit in properly. Wiring Overview Figure 3-4.3: Wiring overview for 4/6kW models 202005 Midea CAC Confidential...
  • Page 81 Room thermostat (field supply) Booster heater Boiler (field supply) Contactor P_s: Solar pump (field supply) Power supply P_c: Mixing pump (field supply) Backup heater P_o: Outside circulation pump (field supply) Zone2 SV3(3-way valve) P_d: DHW pump (field supply) 202005 Midea CAC Confidential...
  • Page 82 3-way valve control cable 2 or 3 200mAC Thermistor cable Booster heater control cable 200mA(a) 2+GND(1-Phase) 31A (1-Phase) Power supply cable for unit 3+GND(3-Phase) 15A (3-Phase) 2+GND(1-Phase) 14A (1-Phase) Power supply cable for backup heater 3+GND(3-Phase) 6A (3-Phase) 202005 Midea CAC Confidential...
  • Page 83 The speed changes as a function of the input profile. The relationship between external static pressure and water flow rate is described in Part 2, 7 “Hydronic Performance”. Figure 3-6.1: Internal circulation pump 202005 Midea CAC Confidential...
  • Page 84 UNLOCK Unlock /lock some functions such as “DHW temperature adjusting” Go to the next step when programming a schedule in the menu structure and confirm a selection to enter in the submenu of the menu structure. 202005 Midea CAC Confidential...
  • Page 85 M thermal Mono Menu Structure 202005 Midea CAC Confidential...
  • Page 86 DHW PRIORITY mode, when it is available and the space heating/cooling is OFF, the heat pump will heat the water as required. If space heating/cooling is ON, the water will be heated as required when the immersion heater is unavailable. 202005 Midea CAC Confidential...
  • Page 87 T4DHWMIN can take is -25°C, which is the DHW mode lower ambient temperature operating limit of the heat pump. t_INTERVAL_DHW sets the DHW mode compressor re-start delay. When the compressor stops running, it will not re-start 202005 Midea CAC Confidential...
  • Page 88 DHW pump, select ON so that the user is able to set pump start times. PUMP RUNNING TIME sets the length of time the pump runs for at each of the user-specified start times on the DHW 202005 Midea CAC Confidential...
  • Page 89 Figure 3-7.13. dTSC is only applicable if YES is selected for ROOM TEMP in the TEMP. TYPE SETTING menu. Refer to Part 3, 7.8 “TEMP. TYPE SETTING Menu”. t_INTERVAL_C sets the cooling mode compressor re-start delay. When the compressor stops running, it will not re-start until at least t_INTERVAL_C minutes have elapsed. 202005 Midea CAC Confidential...
  • Page 90 Note: Only when ROOM TEMP is enabled will this function be available dTSH sets the temperature difference between the actual room temperature (Ta) and set room temperature (TS) above 202005 Midea CAC Confidential...
  • Page 91 AHS: Additional heating source IBH: Backup electric heater T4CMAX: The ambient temperature above which the heat pump will not operate in cooling mode. T4HMIN: The ambient temperature below which the heat pump will not operate in heating mode. 202005 Midea CAC Confidential...
  • Page 92 In this case, the setting value of zone 1 is T1S, the setting value of zone 2 is T1S2. Figure 3-7.23: DOUBLE ZONE to YES and set ROOM TEMP. to NON meanwhile set WATER FLOW TEMP. to YES or NON 202005 Midea CAC Confidential...
  • Page 93 ROOM THERMOSTAT = NON: No room thermostat. ROOM THERMOSTAT = MODE SET: Room thermostat can control heating and cooling individually. ROOM THERMOSTAT=ONE ZONE: Room thermostat provides the switch signal to unit. ROOM THERMOSTAT=DOUBLE ZONE: Indoor unit is connected with two room thermostat. 202005 Midea CAC Confidential...
  • Page 94 Additional heating source AHS: T4: Outdoor ambient temperature IBH LOCATE means IBH is installed for pipe heating. P_IBH1, P_IBH2 set heating capacity of IBH and P_TBH sets heating capacity of TBH, which are used for energy consumption statistics. 202005 Midea CAC Confidential...
  • Page 95 On selecting YES, the process of restoring all settings to their factory defaults begins and progress is displayed as a percentage. Figure 3-7.31: RESTORE FACTORY SETTINGS screens 10 RESTORE FACTORY SETTINGS 10 RESTORE FACTORY SETTINGS Please wait… All the settings will come back to factory default. Do you want to restore factory settings? CONFIRM 202005 Midea CAC Confidential...
  • Page 96 ON/OFF to toggle the on/off state of the component. If a valve does not turn on/off when its on/off state is toggled or if a pump/heater does not operate when turned on, check the component’s connection to the hydronic system main PCB. Figure 3-7.34: POINT CHECK menu 202005 Midea CAC Confidential...
  • Page 97 If any error code is displayed during the cool mode running operation, the cause should be investigated. Refer to Part 3, 10 “Error Code table”. 202005 Midea CAC Confidential...
  • Page 98 Figure 3-7.39: DHW MODE RUNNING display 11 TEST RUN Test run is on. DHW mode is on. Water flow temper. is 45° C Water tank temper. is 30° C CONFIRM 202005 Midea CAC Confidential...
  • Page 99 During the preheating for floor operation all buttons except OK are inactivated. To exit the preheating for floor operation, press OK and then select YES when prompted. Refer to Figure 3-7.38. 202005 Midea CAC Confidential...
  • Page 100 Note: In the event of a heat pump malfunction, floor drying up mode will continue if a backup electric heater and/or additional heating source is available and configured to support space heating mode. ENTER EXIT ADJUST 202005 Midea CAC Confidential...
  • Page 101 RT/Ta_PCB Enable or disable the RT/Ta_PCB Ta PROBE sets the Ta sensor connection type, HMI: Ta on wired 15.7 SOLAR INPUT controller; IDU: Ta connected on hydronic PCB. 15.8 F-PIPE LENGTH ＜10m 15.9 dTbt2 12° C 15.10 RT/Ta_PCB ADJUST 202005 Midea CAC Confidential...
  • Page 102 T2B PLATE F-IN TEMP. 35° C P1 COMP. PRESSURE 2300kPa DC GENERATRIX VOLTAGE 420V Th COMP. SUCTION TEMP. 5° C ODU SOFTWARE 01-09-2018V01 DC GENERATRIX CURRENT Tp COMP. DISCHARGE TEMP. 75° C HMI SOFTWARE 01-09-2018V01 ADDRESS ADDRESS ADDRESS 202005 Midea CAC Confidential...
  • Page 103 Go to “MENU”> “WLAN SETTING”> “RESTORE WLAN SETTING”, select YES, press OK and wireless configuration is reset. Figure 3-8.2: RESTORE WLAN SETTING menu RESTORE WLAN SETTING Do you want to restore the WLAN setting and exit? 202005 Midea CAC Confidential...
  • Page 104 Scan the following QR code in Figure 3-8.3 or research " MSmartLife" in APP STORE or GOOGLE PLAY to install the APP. Figure 3-8.3: QR code for MSmartLifeAPP 9.2.2 Sign in After installation, open the APP and click the "+" button to register account according to the guide. Figure 3-8.4: add device 202005 Midea CAC Confidential...
  • Page 105 Add Home Appliances Choose the wired controller model, then go to add the device. Figure 3-8.5: APP connection prompts Operate the wired controller according to APP prompts. Wait for the home appliance to connect, and click “Finish”. 202005 Midea CAC Confidential...
  • Page 106 If the network distribution process fails, or the mobile connection demands reconnection and replacement, operate “RESTORE WLAN SETTING” on the wired controller, and then repeat the above process. Figure 3-8.6: successful connection Figure 3-8.7: failed connection 202005 Midea CAC Confidential...
  • Page 107 It only has the curves of the low temperature setting for heating, if the low temperature is set for heating. Curve 4 is default in low temperature heating mode and curve 6 is default in ECO mode. 202005 Midea CAC Confidential...
  • Page 108 It only has the curves of the low temperature setting for cooling, if the low temperature is set for cooling. Curve 4 is default in low temperature cooling mode and curve 6 is default in ECO mode. 202005 Midea CAC Confidential...
  • Page 109 T1S (T1S2) T1SETH1 T1SETH2 T4H1 T4H2 The setting of T1SETH1, T1SETH2, T4H1, T4H2 refer to Part 3, 7.6” HEATING MODE SETTING Menu” and T1SETC1, T1SETC2, T4C1, T4C2 refer to Part 3, 7.5” COOLING MODE SETTING Menu”. 202005 Midea CAC Confidential...
  • Page 110 Discharge temperature sensor Tp protection High temperature difference between water side heat exchanger water inlet and water outlet temperatures protection Inverter module protection Inverter module protection DC bus low voltage protection DC bus high voltage protection MCE error 202005 Midea CAC Confidential...
  • Page 111 Actual compressor frequency differs from target frequency by more than 15Hz protection Water side heat exchanger anti-freeze protection High temperature protection of refrigerant outlet temperature of condenser in cooling mode Water side heat exchanger inlet temperature is higher than outlet temperature in heating/DHW mode PED board error 202005 Midea CAC Confidential...
  • Page 112 M thermal Mono 202005 Midea CAC Confidential...
  • Page 113 Ver. 2020-05 Commercial Air Conditioner Division Midea Group Add.: Midea Headquarters Building, 6 Midea Avenue, Shunde, Foshan, Guangdong, China Postal code: 528311 Tel: +86-757-26338346; Fax: +86-757-22390205 cac.midea.com / global.midea.com Note: Product specifications change from time to time as product improvements and developments are released and may vary from those in this document.

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Mhc-v4w/d2n8-bMhc-v6w/d2n8-bMhc-v8w/d2n8-bMhc-v10w/d2n8-bMhc-v12w/d2n8-bMhc-v12w/d2rn8-b ... Show all

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