Table of Contents
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MCAC-RTSM-2014-03
R410A Rooftop Package Unit 60Hz
Contents
1. Product List ........................................................................................................................ 2
2. External Appearance .......................................................................................................... 2
3. Nomenclature ..................................................................................................................... 3
4. Features .............................................................................................................................. 4
5. List of Functions................................................................................................................. 7
6. Specification ....................................................................................................................... 9
7. Dimensional Drawing ....................................................................................................... 13
8. Wiring Diagram ................................................................................................................. 14
9. Performance Data ............................................................................................................. 22
10. Explode View .................................................................................................................. 25
11. Electrical Data ................................................................................................................. 27
12. Parameter and Pressure Chart for Air Volume ............................................................ 28
13. Refrigerant Cycle Diagram ............................................................................................ 31
14. Operation Limit ............................................................................................................... 32
15. Installation ....................................................................................................................... 33
16 Wired Controller .............................................................................................................. 38
17. Error Code ....................................................................................................................... 42
18. Accessories .................................................................................................................... 43
19. Maintenance and Upkeep .............................................................................................. 44
Appendix: .............................................................................................................................. 46
※ Manufacture reserves the right to discontinue, or change at any time, specifications or designs without
notices and without incurring obligations.
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Summary of Contents for Midea MRC-36CWN1-V10
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Page 1: Table Of Contents
MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz Contents 1. Product List ........................2 2. External Appearance ......................2 3. Nomenclature ........................3 4. Features ..........................4 5. List of Functions......................... 7 6. Specification ........................9 7. Dimensional Drawing ....................... 13 8. Wiring Diagram ......................... 14 9. -
Page 2: Product List
R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 1. Product List Nominal Capacity Model Power Supply Refrigerant Model Name Function V/Ph/Hz Cooling MRC-36CWN1-V10 Cooling MRC-36CWN1-V10(A) MRC-48CWN1-V10 Cooling 208-230V/1Ph/60Hz MRC-48CWN1-V10(A) Cooling R410A MRC-60CWN1-V10 Cooling MRC-60CWN1-V10(A) Cooling Cooling MRC-60CWN1-X10 208-230V/3Ph/60Hz MRC-60CWN1-X10(A) Cooling 2. External Appearance... -
Page 3: Nomenclature
X: 208-230V, 3Ph, 60Hz Refrigerant type N1:R410A Omit for R22 Wired controller Function mode C: Cooling only E: Electric heater and Cooling H: Cooling and heating Cooling capacity (x1000Btu/h) Air outlet way C: One air outlet way: side Rooftop package Midea... -
Page 4: Features
R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 4. Features 1. The adoption of anticorrosive-box The reinforced anticorrosion by using galvanization armor plate and coated with man-composed paint. The appearance is stylish and be easy for maintenance. (Has been passed 1000 hours salt spray test) 2. - Page 5 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 4.4 Pre-drilled duct flange Flanges are prepared at the supply and return duct connections so that they can reduce duct connection work at site. 4.5 Quiet operation Noise and vibration have been effectively reduced by adopting new style hermetic compressor. The centrifugal fan and fan casing are optimum shaped for efficient and low noise operation.
- Page 6 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 6. The rooftop and ground installation are optional. 7. Easy to install, service and maintenance Because today’s owner are very cost-conscious when it comes to service and maintenance, Compact size and integrate indoor unit and outdoor unit, save the transportation, lifting and installation cost. A complete factory run test is performed on each unit without any potential start up problem.
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Page 7: List Of Functions
MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 5. List of Functions 5.1 Standard specifications A. General Packaged cooling is suitable for mounting on the roof or ground. The packaged unit consists of scroll compressors, evaporator coil, condenser coil, control wiring and interconnecting piping- all factory assembled and mounted on heavy gauge G-90 galvanized steel sheet press formed base, ready for field connection to utilities and ducts. - Page 8 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 polished from solid steel. Fans and pulleys are keyed to shaft and designed for continuous operation at maximum motor horse power and fan speed. All rotating components and assemblies are statically and dynamically balanced and every unit is vibration tested before shipment from the factory. 5.2 Standard features/optional features Description Standard features...
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Page 9: Specification
MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 6. Specification Model MRC-36CWN1-V10 MRC-48CWN1-V10 MRC-60CWN1-V10 MRC-60CWN1-X10 Power supply V/h/Hz 208-230/1/60 208-230/1/60 208-230/1/60 208-230/3/60 Capacity Btu/h 36000 48000 60000 60000 Cooling SEER Btu/h.W Max. input consumption 5.04 7.42 7.96 7.56 Electrical data Max. power input 27.4... - Page 10 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 Model YDK180-6B YDK180-6B YDK180-6B YDK180-6B Type AC motor AC motor AC motor AC motor Brand Welling Welling Welling Welling Outdoor fan Output motor Rated current Capacitor r/min 1075 1075 1075 1075 material Alnico Alnico Alnico Alnico Type...
- Page 11 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz MRC-36CWN1-V10 MRC-48CWN1-V10 MRC-60CWN1-V10 MRC-60CWN1-X10 Model Power supply V/Ph /Hz 208~230/1/60 208~230/1/60 208~230/1/60 208~230/3/60 Capacity Btu/h 36000 48000 60000 60000 Cooling SEER Btu/h.W Max. input consumption Electrical data Max. power input 24.8 41.5 48.4 25.5...
- Page 12 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 fan motor Type AC motor AC motor AC motor AC motor Brand Welling Welling Welling Welling Output Rated current Capacitor r/min 1075 1075 1075 1075 material Alnico Alnico Alnico Alnico Outdoor Type Axial flow fan Axial flow fan Axial flow fan Axial flow fan...
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Page 13: Dimensional Drawing
MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 7. Dimensional Drawing 3~5ton... -
Page 14: Wiring Diagram
R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 8. Wiring Diagram 8.1 MRC-36CWN1-V10... - Page 15 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 8.2 MRC-48CWN1-V10...
- Page 16 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 8.3 MRC-60CWN1-V10...
- Page 17 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz MRC-60CWN1-X10...
- Page 18 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 MRC-36CWN1-V10(A) WIRING DIAGRAM T O T H E R M O S T A T CODE PART NAME COMP COMPRESSOR FAN1 INDOOR FAN CN48 CN33 FAN2 OUTDOOR FAN CAP1 INDOOR FAN CAP CAP2 OUTDOOR FAN CAP...
- Page 19 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz MRC-48CWN1-V10(A) WIRING DIAGRAM T O T H E R M O S T A T CODE PART NAME COMP COMPRESSOR FAN1 INDOOR FAN CN33 CN48 FAN2 OUTDOOR FAN CAP1 INDOOR FAN CAP CAP2 OUTDOOR FAN CAP XP1~2 CONNECTORS MAIN CONTROL BOARD...
- Page 20 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 MRC-60CWN1-V10(A) WIRING DIAGRAM T O T H E R M O S T A T CODE PART NAME COMP COMPRESSOR FAN1 INDOOR FAN CN33 CN48 FAN2 OUTDOOR FAN CAP1 INDOOR FAN CAP OUTDOOR FAN CAP CAP2 XP1~2 CONNECTORS...
- Page 21 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz MRC-60CWN1-X10(A) T O T H E W I R E C O N T R O L L E R MAIN CONTROL BOARD WIRING DIAGRAM CN13 CODE PART NAME CN32 CN34 CN35 CN36 CN37 CN15 COMP COMPRESSOR...
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Page 22: Performance Data
R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 9. Performance Data 9.1 Cooling capacity for 3 ton: Air Flow C F M 1 2 0 0 1 0 7 5 (° F) Ent (DB) 3 6 .5 3 8 .3 4 1 .7 4 3 .0 3 5 .2 3 7 .0... - Page 23 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 9.2 Cooling capacity for 4Ton: 150 0 1 20 0 Air Flow C FM ( ° F Ent (DB) 4 8.5 51 .0 5 5.6 57 .3 4 6.6 49 .0 5 3 .4 55 .0 3 4.2 35 .9...
- Page 24 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 9.3 Cooling capacity for 5 Ton(208-230V/1N/60Hz)): Air Flow C F M 1 50 0 Ent (DB) ( ° F) 60 .5 6 3 .6 6 9.3 7 1.4 41 .3 4 3 .4 4 6.8 4 8.1 62 .5 6 5 .7...
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Page 25: Explode View
MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 10. Explode View 10.1 Explode view for 3,4,5 ton... - Page 26 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 Part Name Part Name Rear cover ass'y Top cover ass'y Board Ring Base ass'y Former pole 23.1 Base Gridding I 23.2 Strengthen board I Motor 23.3 Base Axial flow fan Installation board Front cover plate ass'y Drainage pan Handle Drainage pan waterproof board...
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Page 27: Electrical Data
M odel M CA TO CA M FA RN C M RC -36CW N1-V10 26.6 27.2 17.9 3.54 0.47 2.06 0.46 8 MRC-36CWN1-V10(A) 19.2 3.02 2.36 0.27 0.18 MRC -48 CW N1-V10 37.8 26.4 4.86 0.47 2.52 0.57 2 MRC-48CWN1-V10(A) 41.5... -
Page 28: Parameter And Pressure Chart For Air Volume
R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 12. Parameter and Pressure Chart for Air Volume 12.1 Model:3 ton Parameter table for indoor unit air volume: Static pressure (Pa) Air flow (m3/h) 2612 2505 2430 2282 2134 1967 1735 Brake power (W) Fan speed (rpm) Curve diagram of static pressure, air flow volume: 36000Btu/h 208-230V~ 60Hz... - Page 29 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 12.2 Model:4 ton Parameter table for indoor unit air volume: Static pressure (Pa) Air flow (m3/h) 2651 2514 2290 2227 2295 1900 1620 1192 Brake power (W) Fan speed (rpm) 1051 1060 1065 1072 1080 1091 1101...
- Page 30 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 12.3 Model:5 ton Parameter table for indoor unit air volume: Static pressure (Pa) Air flow (m3/h) 2726 2602 2460 2345 2191 2000 1703 1258 Brake power (W) Fan speed (rpm) 1084 1092 1098 1102 1108 1115 1120...
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Page 31: Refrigerant Cycle Diagram
MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 13. Refrigerant Cycle Diagram Cooling only Condenser High pressure switch Evaporator Low pressure switch TP: Compressor discharge temperature sensor in system T2: Indoor coil temperature sensor in system T3: Outdoor coil temperature sensor in system... -
Page 32: Operation Limit
R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 14. Operation Limit 14.1 Cooling only Cooling mode Indoor temperature ( ℃ WB) Temperature Outdoor temperature Indoor temperature Model Cooling mode 64.4℉~114.8℉(18℃～46℃) 62.6℉~86(17℃～30℃) Note: Room relative humidity less than 80% . If the unit operates in excess of this figure, the surface of the unit may attract condensation. -
Page 33: Installation
MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 15. Installation 15.1 Lifting Rigging cables should have adequate capability to resist 3 times weight of unit. Before lift, please check and ensure that hooks are holding tightly to unit and lifting angles are no less than 60° . Cloth material or hard-paper should be padded in the contact place between unit and rigging cable. - Page 34 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 Typical rooftop application with frame: 15.4 Ground Level -- Horizontal Units For ground level installations, the unit should be positioned on a pad the size of the unit or larger. The unit must be level on the pad. The pad must not come in contact with the structure. Be sure the outdoor portion of the supply and return air ducts are as short as possible.
- Page 35 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 15.5 Installation of condensate drain piping DRAINCONNECTIONHOLE DRAIN OUTLET SNAP RING DRAIN PIPE 15.6 Maximum foundation gradient Make sure the condensate drain side is not higher than the other side. Typical maximum foundation gradient Condensate drain side...
- Page 36 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 15.7 Ductwork 1. Attaching horizontal ductwork to unit 1) All conditioned air ductwork should be insulated to minimize heating and cooling duct losses. Use a minimum of two (2) inches of insulation with a vapor barrier. The outside ductwork must be weatherproofed between the unit and the building.
- Page 37 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 15.7 Wiring provision Field wiring The units are internally wired at the factory according to generally accepted electrical technology. Required field wiring Main power wiring to the unit control wiring between the control center and the unit, and earth wiring are required in the field.
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Page 38: Wired Controller
R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 16 Wired Controller 16.2 Optional wired controller: KJR-23B: For cooling only and cooling with auxiliary heater KJR-25B： For Cooling and heating KJR-23B KJR-25B 16.3 Field wiring To connect wired controller 3ton&4ton 5ton X T1 Y /G Y /G POWER... - Page 39 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 16.4 KJR-25B 16.4.1 Operation of buttons LCD Display:Shows Time,Day,Temperature, Program Number,and other feature information as required. Backlight key Up and Down Key:Key for changing the Temperature setting. Also used for increasing and decreasing selections in the Measures and displays Time,Program,and Span heating and cooling system...
- Page 40 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 Fresh alkaline batteries should provide about one year of service. However, when the batteries become drained, “BATT” will alternate on the display with the current time. When this message occurs, install 2 new AA batteries, You have approximately 1 minute to change the batteries and keep thermostat’s clock. Once the batteries have become too low to ensure proper operation, your system will be turned off, and the display will be cleared except for “BATT”...
- Page 41 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 16.4.5 Troubleshooting Problem Solution Scrambled or double display 1. Remove clear mylar sticker. No display 1. Check battery connections and batteries 2. Move the battery out and then hold any key to release the rest energy. Then place the battery again.
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Page 42: Error Code
R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 17. Error Code Code LED1(Red) LED2(Yellow) LED3(Green) Standby Function Lack of phase Flash Flash Flash Phase-error Flash Flash T3 sensor failure High pressure protection Flash Flash Vent protection T2 sensor failure Flash Flash T2 Evaporator low temp, protection Flash T3 Condenser high temp, protection Flash... -
Page 43: Accessories
MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz 2. Outdoor fan failure Check whether there is 24v between A1 and A2 on the outdoor. contactor AC contactor and compressor, Check whether there is replace the failure parts. 24V voltage between Y and C. Replace outdoor motor Replace capacitor. -
Page 44: Maintenance And Upkeep
R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 19. Maintenance and Upkeep 19.1 Routine maintenance by owner You can do some of the periodic maintenance functions for your unit yourself, this includes cleaning the permanent air filters, cleaning the unit cabinet, cleaning the condenser coil, and conducting a general unit inspection on a regular basis. - Page 45 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz CAUTION: Do not dry out the air filter under direct sunshine or with fire. 19.4 Re-install the air filter Condenser coil Unfiltered air circulates through the unit's condenser coil and can cause the coil's surface to become clogged with dust, dirt, etc.
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Page 46: Appendix
R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 Appendix: 1. Indoor Temp. and Pipe Temp. Sensor Resistance Value Table R - T T able t r a ± B25/50 = 4100 K ± 1% Temperature Tol. Temperature Rmax. Rnor. Rmin. (℃) (℃) (KΩ) (KΩ) (KΩ) - Page 47 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz R - T T able t r a ± B25/50 = 4100 K ± 1% Temperature Tol. Temperature Rmax. Rnor. Rmin. (℃) (℃) (KΩ) (KΩ) (KΩ) 19.947 19.617 19.290 -0.32 0.34 18.961 18.656 18.355 -0.32 0.33 18.030...
- Page 48 R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03 R - T T able t r a ± B25/50 = 4100 K ± 1% Temperature Tol. Temperature Rmax. Rnor. Rmin. (℃) (℃) (KΩ) (KΩ) (KΩ) 3.2608 3.1919 3.1241 -0.54 0.56 3.1383 3.0708 3.0044 -0.56 0.57 3.0211...
- Page 49 MCAC-RTSM-2014-03 R410A Rooftop Package Unit 60Hz R - T T able t r a ± B25/50 = 4100 K ± 1% Temperature Tol. Temperature Rmax. Rnor. Rmin. (℃) (℃) (KΩ) (KΩ) (KΩ) 0.80962 0.78143 0.75415 -1.17 1.17 0.78569 0.75811 0.73141 -1.18 1.19 0.76260...
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