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Midea MRC-36CWN1-V10, Manual

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Midea MRC-36CWN1-V10 Manual Download Page 43

MCAC-RTSM-2014-03

   

                                                                                                                   

R410A Rooftop Package Unit 60Hz 

 

43 

2. Outdoor fan failure 

 

 

 

 

                                   

            yes                                                              no 

 

 

 

 

 

                   

          yes                          no                                     

                                                                                                           

  yes                    no 

 

 

 

 

 

 

18. Accessories 

NAME OF ACCESSORIES

Q

‘ty

Qutime

MANUAL

DRAIN OUTLET

SNAP RING

DRAIN PIPE

1

1

1

1

 

Replace  outdoor  motor 

fan. 

 

Replace capacitor. 

Check  whether  there  is  24v  between  A1  and  A2  on  the  outdoor. 

contactor   

AC  contactor  and  compressor, 

replace the failure parts.     

Check  whether  there  is 

24V  voltage  between  Y 

and C. 

 

 

Check wring. 

Check  whether  the  setting 

and  wiring  of  the  wired 

controller. 

 

Summary of Contents for MRC-36CWN1-V10

Page 1: ...formance 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 withou...

Page 2: ...ly Ton Model Name Function V Ph Hz 3 MRC 36CWN1 V10 Cooling R410A 208 230V 1Ph 60Hz 3 MRC 36CWN1 V10 A Cooling 4 MRC 48CWN1 V10 Cooling 4 MRC 48CWN1 V10 A Cooling 5 MRC 60CWN1 V10 Cooling 5 MRC 60CWN1 V10 A Cooling 5 MRC 60CWN1 X10 Cooling 208 230V 3Ph 60Hz 5 MRC 60CWN1 X10 A Cooling 2 External Appearance 3 5 Ton ...

Page 3: ...d design Omit The first design SEER rating 10 Power supply V 208 230V 1Ph 60Hz 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: ... for condenser have the temperature controller protection function 3 Energy saving design 3 1 High efficiency compressor Using professional compressor heat exchanger and optimum connection pipe the compressor can startup under low power input 3 2 Condenser By using the high efficient thin wing as the heat exchanger the waste of energy is greatly decreased 3 3 Evaporator By using high efficient thi...

Page 5: ...m shaped for efficient and low noise operation 5 Cabinet 5 1 Sloped drain pan and drain pipe 5 2 Cabinets have forklift and lifting holes for easy transportation 5 3 The filter is washable 5 4 Easy access doors Provides easy access to system components for maintenance and serviceable Removable access doors on the filter fan motor and control box sections 5 5 Durable construction Weather resistant ...

Page 6: ...ay 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 8 System self diagnostic function The system self diagnostic function press the check button the LED displays the normal ...

Page 7: ... condensing section is enclosed within the unit housing and consists of condenser coil fan s electric motor s and inherently protected compressor s Inner grooved copper tubes with wall thickness of 0 3mm mechanically bonded to enhanced louvered aluminum fins are standard for all condenser coils As an option enhanced coated aluminum fins may be provided Tube support sheets are galvanized steel form...

Page 8: ...tested before shipment from the factory 5 2 Standard features optional features Description Standard features Optional features Horizontal discharge Compressor crankcase heaters Indoor fan centrifugal fan Outdoor fan direct drive axial type Outdoor fan motor totally enclosed air over type Filter Nylon Thickness 10mm Compressor overload protection Low high pressure switch Condenser fan guard Conden...

Page 9: ... motor Brand YONG AN YONG AN YONG AN YONG AN Output HP 1 2 3 4 1 1 Rated current A 2 15 2 85 2 8 2 8 Capacitor uF 12 12 20 20 RPM r min 1075 1075 1075 1075 Indoor fan Material Metal Metal Metal Metal Type Centrifugal fan Centrifugal fan Centrifugal fan Centrifugal fan Diameter Inch mm 11 1 282 11 1 282 11 1 282 11 1 282 Height Inch mm 10 7 272 10 7 272 10 7 272 10 7 272 Indoor coil Number of rows ...

Page 10: ...3 8 Φ9 52 Φ3 8 Φ9 52 Φ3 8 Φ9 52 Φ3 8 Φ9 52 Type Inner grooved tube Inner grooved tube Inner grooved tube Inner grooved tube Coil length x height Inch mm 58 3 30 58 3 30 58 3 30 58 3 30 Number of circuits 4 4 4 4 Dimension Net W H D mm 1116 830 744 1116 830 744 1116 830 744 1116 830 744 Packing W H D mm 1152 855 765 1152 855 765 1152 855 765 1152 855 765 Weight Net Gross weight Kg 149 152 161 164 1...

Page 11: ...Yang Welling DaYang Output HP 1 3 1 2 4 5 4 5 Rated current A 1 41 2 08 2 33 2 33 Capacitor uF 10 20 20 20 RPM r min 400 890 990 990 Indoor fan Material Metal Metal Metal Metal Type Centrifugal fan Centrifugal fan Centrifugal fan Centrifugal fan Diameter Inch mm 11 1 282 11 1 282 11 1 282 11 1 282 Height Inch mm 10 7 272 10 7 272 10 7 272 10 7 272 Indoor coil Number of rows 3 3 4 4 Tube pitch a x ...

Page 12: ...Φ7 Φ1 16 Φ7 Φ1 16 Φ7 Type Inner grooved tube Inner grooved tube Inner grooved tube Inner grooved tube Coil length x height Inch mm 1513 756 1480 756 1480 756 1480 756 Number of circuits 1 1 1 1 Dimension Net W H D mm 1116 830 744 1116 830 744 1116 830 744 1116 830 744 Packing W H D mm 1152 855 765 1152 855 765 1152 855 765 1152 855 765 Weight Net Gross weight Kg 132 135 141 144 151 154 151 154 Cha...

Page 13: ...MCAC RTSM 2014 03 R410A Rooftop Package Unit 60Hz 13 7 Dimensional Drawing 3 5ton ...

Page 14: ...R410A Rooftop Package Unit 60Hz MCAC RTSM 2014 03 14 8 Wiring Diagram 8 1 MRC 36CWN1 V10 ...

Page 15: ...MCAC RTSM 2014 03 R410A Rooftop Package Unit 60Hz 15 8 2 MRC 48CWN1 V10 ...

Page 16: ...R410A Rooftop Package Unit 60Hz MCAC RTSM 2014 03 16 8 3 MRC 60CWN1 V10 ...

Page 17: ...MCAC RTSM 2014 03 R410A Rooftop Package Unit 60Hz 17 MRC 60CWN1 X10 ...

Page 18: ...CK BLACK 24V RT2 XS1XP1 XS2XP2 TRANSFORMER 24V 2 WAY TERMINAL LOW PRESS SWITCH AC CONTACTOR COMPRESSOR COMP FAN1 RT2 XP1 2 XS1 2 CAP1 T5 XT2 WIRING DIAGRAM CONNECTORS TEMP SENSOR CODE INDOOR FAN PART NAME CONNECTORS FAN2 CAP2 T6 OUTDOOR FAN INDOOR FAN CAP OUTDOOR FAN CAP TRANSFORMER XT1 L PRO KM1 MIDDLE TERMINAL K2 COMP TEMP SWITH CAP3 4 COMP RUNNING CAP TO THERMOSTAT CT1 CN49 N CN30 CN33 CN48 BL ...

Page 19: ...BLACK 24V RT2 XS1XP1 XS2 XP2 TRANSFORMER 24V 2 WAY TERMINAL LOW PRESS SWITCH AC CONTACTOR COMPRESSOR COMP FAN1 RT2 XP1 2 XS1 2 CAP1 T5 XT2 WIRING DIAGRAM CONNECTORS TEMP SENSOR CODE INDOOR FAN PART NAME CONNECTORS FAN2 CAP2 T6 OUTDOOR FAN INDOOR FAN CAP OUTDOOR FAN CAP TRANSFORMER XT1 L PRO KM1 MIDDLE TERMINAL K2 COMP TEMP SWITH K1 CAP3 4 COMP RUNNING CAP TO THERMOSTAT CT1 CN49 N CN30 CN33 CN48 BL...

Page 20: ...4V RT2 XS1XP1 XS2 XP2 TRANSFORMER 24V 2 WAY TERMINAL LOW PRESS SWITCH AC CONTACTOR COMPRESSOR COMP FAN1 RT2 XP1 2 XS1 2 CAP1 T5 XT2 WIRING DIAGRAM CONNECTORS TEMP SENSOR CODE INDOOR FAN PART NAME CONNECTORS FAN2 CAP2 T6 OUTDOOR FAN INDOOR FAN CAP OUTDOOR FAN CAP TRANSFORMER XT1 L PRO KM1 MIDDLE TERMINAL K2 COMP TEMP SWITH K1 CAP3 4 COMP RUNNING CAP TO THERMOSTAT CT1 CN49 N CN30 CN33 CN48 B LAC K R...

Page 21: ...ROWN CN1 RED BLACK C R Y G XT2 BLACK WHITE BLUE WHITE BLUE T5 XS1XP1 XS2XP2 K1 XS3 XP3 CT1 TRANSFORMER 24V 5 WAY TERMINAL LOW PRESS SWITCH AC CONTACTOR COMPRESSOR COMP FAN1 RT2 XP1 5 XS1 5 CAP1 T5 XT2 WIRING DIAGRAM CONNECTORS TEMP SENSOR CODE INDOOR FAN PART NAME CONNECTORS FAN2 CAP2 T6 OUTDOOR FAN INDOOR FAN CAP OUTDOOR FAN CAP TRANSFORMER XT1 L PRO KM1 MIDDLE TERMINAL K2 COMP TEMP SWITCH K1 TO ...

Page 22: ...3 26 3 27 0 TC 31 3 32 9 35 5 36 3 30 2 31 7 34 3 35 1 TC 27 2 28 5 31 1 32 0 26 2 27 5 30 0 30 9 TC 28 0 35 1 31 9 32 9 27 0 33 9 30 8 31 8 SC 23 1 23 6 25 9 26 9 22 3 22 8 25 0 26 0 TC 28 6 30 0 32 7 33 6 27 6 29 0 31 6 32 4 105 67 73 85 61 67 73 73 73 61 67 73 75 61 115 61 67 95 61 67 1075 1200 Ambient Temperature F Entering Wet Bulb F F Notes 1 All capacities are net and have considered indoor...

Page 23: ...7 3 48 4 40 0 42 0 45 4 46 5 TC 36 2 37 9 41 4 42 6 34 8 36 4 39 7 40 9 TC 37 3 46 7 42 5 43 8 35 8 44 9 40 8 42 1 SC 27 9 28 5 31 3 32 5 26 9 27 4 30 1 31 3 TC 38 1 40 0 43 6 44 7 36 6 38 4 41 9 43 0 75 85 67 115 61 67 73 61 67 73 61 73 95 61 67 73 105 61 67 73 1500 1200 Ambient Temperature F Entering Wet Bulb F Air Flow Ent DB Notes 1 All capacities are net and have considered indoor fan heat 2 ...

Page 24: ...34 0 35 8 39 0 39 9 9 4 Cooling capacity for 5 Ton 208 230V 3N 60Hz Notes 1 All capacities are net and have considered indoor fan heat 2 TC Total Capacity Unit 1000Btu h 3 SC Sensible Capacity Unit 1000Btu h 4 Different air volume in the above table need to adjust in the field TC 60 4 63 5 69 2 71 3 TC 62 4 65 6 70 8 72 9 SC 40 7 42 2 45 6 46 9 TC 64 0 67 2 72 6 74 4 TC 56 6 59 5 64 8 66 8 TC 58 4...

Page 25: ...MCAC RTSM 2014 03 R410A Rooftop Package Unit 60Hz 25 10 Explode View 10 1 Explode view for 3 4 5 ton ...

Page 26: ...tput pipe ass y 1 33 Supporter boarding I 1 13 Condenser ass y 1 34 Air outlet flange ass y 1 13 1 Condenser 1 35 Return air flange 1 13 2 Condenser inlet pipe ass y 1 36 Centrifugal Fans 1 13 3 Condenser output pipe ass y 1 37 Motor 1 13 3 1 Distributor 1 38 Rooftop electrical box ass y 1 14 Compressor 1 38 1 E part box 1 15 Throttle valve ass y 1 38 2 Main control board ass y 1 15 1 Throttle 1 3...

Page 27: ...TC RNC IP Qty FLA IPT Qty FLA IP Qty MCA Min Current Amps A TOCA Total Over current Amps A MFA Max Fuse Amps A STC Starting Current A RNC Running Current A IP Input kW Note 1 These data are based on the following conditions Evaporator Air Input Temperature 85 F DB 66 F WB Condenser Air Input Temperature 115 F DB 2 The starting current is indicated for each compressor motor 3 The maximum currents o...

Page 28: ...ssure Pa 0 20 40 60 80 100 120 Air flow m3 h 2612 2505 2430 2282 2134 1967 1735 Brake power W 488 476 468 464 457 449 442 Fan speed rpm 857 892 914 925 940 956 974 Curve diagram of static pressure air flow volume 36000Btu h 208 230V 60Hz 0 20 40 60 80 100 120 140 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 External static pressure Pa Air volume m3 h ...

Page 29: ...m3 h 2651 2514 2290 2227 2295 1900 1620 1192 Brake power W 600 590 572 565 553 540 530 515 Fan speed rpm 1051 1060 1065 1072 1080 1091 1101 1120 Curve diagram of static pressure air flow volume 48000Btu h 208 230V 60Hz 0 25 50 75 100 125 150 175 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 External static pressure Pa Air volume m3 h ...

Page 30: ...460 2345 2191 2000 1703 1258 Brake power W 655 631 609 594 589 572 556 545 Fan speed rpm 1084 1092 1098 1102 1108 1115 1120 1127 Curve diagram of static pressure air flow volume 60000Btu h 208 230V 60Hz 60000Btu h 208 230V 3N 60Hz 0 25 50 75 100 125 150 175 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 External static pressure Pa Air volume m3 h ...

Page 31: ...gerant Cycle Diagram Cooling only TP Compressor discharge temperature sensor in system T2 Indoor coil temperature sensor in system T3 Outdoor coil temperature sensor in system T3 T2 Condenser Evaporator High pressure switch TP Low pressure switch Comp Cap illa ry ...

Page 32: ... 30 35 Cooling mode Outdoor temperature DB Indoor temperature WB Range for continuous operation Temperature Model Outdoor temperature Indoor temperature 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: ...quate serviceability maximum capacity and peak operating efficiency 2 Any reduction of the unit clearances indicated in these illustrations may result in condenser coil starvation or the recirculation of warm condenser air Actual clearances which appear to be inadequate should be reviewed with a local engineer Overhead air Clearance 1 55m 0 6m 0 3m 0 5m 0 8m 15 3 Rooftop units For rooftop applicat...

Page 34: ...ts are as short as possible Installation according to the following procedure 1 Place the unit on the pad 2 Attach the supply and return air ducts to the unit 3 Insulate any ductwork outside of the structure with at least 2 inches of insulation and weatherproof There must be a weatherproof seal where the duct enters the structure 4 Complete the installation according to the instructions Typical gr...

Page 35: ... 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 10m m 0 8 10m m 0 8 10m m 0 5 Condensate drain side 20m m ...

Page 36: ...n must be indoors and made out of heavy canvas Note Do not draw the canvas taut between the solid ducts 2 Attaching down flow ductwork to roof curb Supply and return air flanges are provided on the roof curb for easy duct installation All ductwork must be run and attached to the curb before the unit is set into place Follow these guidelines for ductwork construction 1 Connections to the unit shoul...

Page 37: ...onents are required main power fuse conduit coupling and field supplied room thermostat Wire and fuse size selection for main power source Wire and fuse size should be selected in accordance with national standard taking the designed maximum current shall be the total of the compressor maximum current condenser fan motor current and evaporator fan motor current refer to electrical data Wire size b...

Page 38: ...KJR 25B For Cooling and heating KJR 23B KJR 25B 16 3 Field wiring To connect wired controller L N X T1 Y G POWER C N XT1 B A Y G POWER Dial code setting If the SW3 is on 1 the wired controller KJR 23B or KJR 25B can be used After setting please shut off the power supply and then power on it again otherwise the new settings function will be invalid 3ton 4ton 5ton ...

Page 39: ...ze energy savings For entering Time Returns display to current time and temperature EMER Mode 16 4 2 Features Compressor protection The thermostat provides a 4 minutes delay after shutting of the heating or cooling system before it can be restarted This feature will prevent damage to your compressor caused by rapid cycling Note that this delay also applies to the heating system control It does not...

Page 40: ...en screws Leveling is for appearance only and will not affect thermostat operation If you are using existing mounting holes or if holes drilled are too large and do not allow you to tighten base snugly use plastic screw anchors to secure subcase Push excess wire into wall and plug hole with a fire resistant material such as fiberglass insulation to prevent drafts from affecting thermostat operatio...

Page 41: ...is the correct position 2 There may be as much as 4 minute delay before the Heat or Cool system turns On wait and check Compressor protection delay 3 Check your circuit breaks and switches to ensure there is power to the system 4 Replace batteries 5 Make sure your furnace blower door is closed properly 6 Check the position of the Furnace or Heat Pump selector switches Normal O B Erratic display 1 ...

Page 42: ...ompressor inhaling low pressure protection Flash ON Flash 1 Indoor fan failure Check whether the power supply is normal each wired port is fastened the setting and wiring of the wired controller is right Confirm the above and check as the following step Yes no Yes no no no Check the PCB whether there is 208 230 voltage between CN9 and L1 Cut off the power supply and check whether the fan capacitor...

Page 43: ...e MANUAL DRAIN OUTLET SNAP RING DRAIN PIPE 1 1 1 1 Replace outdoor motor fan Replace capacitor Check whether there is 24v between A1 and A2 on the outdoor contactor AC contactor and compressor replace the failure parts Check whether there is 24V voltage between Y and C Check wring Check whether the setting and wiring of the wired controller ...

Page 44: ...conducting a general unit inspection on a regular basis 19 2 Clean the air filter 19 2 1 Dismantle the air filter Twist of screws then the filter baffle gets out Drag out filter FILTER FILTER BAFFLE 19 3 Clean the air filter Vacuum cleaner or pure water may be used to clean the air filter If the dust accumulation is too heavy please use soft brush and mild detergent to clean it and dry out The air...

Page 45: ...ceman check the entire system at least once each year and any other time that you feel one is needed Your serviceman should examine these areas of your unit Filters Motors and drive system components Economizer gaskets for possible replacement Safety controls for mechanical cleaning Electrical components and wiring for possible replacement and connection tightness Condensate drain for cleaning Uni...

Page 46: ...6 727 84 025 0 52 0 54 15 84 262 81 694 79 196 0 51 0 53 14 79 355 76 982 74 673 0 50 0 52 13 74 763 72 570 70 435 0 50 0 52 12 70 464 68 437 66 462 0 49 0 51 11 66 437 64 564 62 737 0 48 0 50 10 62 664 60 932 59 242 0 48 0 50 9 59 127 57 526 55 963 0 47 0 49 8 55 810 54 330 52 884 0 46 0 48 7 52 699 51 331 49 993 0 46 0 47 6 49 779 48 514 47 276 0 45 0 47 5 47 038 45 869 44 724 0 44 0 46 4 44 465...

Page 47: ... 0 22 26 9 6518 9 5519 9 4520 0 22 0 23 27 9 2262 9 1265 9 0270 0 23 0 25 28 8 8218 8 7226 8 6235 0 25 0 26 29 8 4376 8 3389 8 2405 0 26 0 27 30 8 0723 7 9743 7 8767 0 27 0 28 31 7 7250 7 6279 7 5312 0 28 0 29 32 7 3947 7 2985 7 2028 0 29 0 31 33 7 0805 6 9853 6 8906 0 30 0 32 34 6 7814 6 6873 6 5939 0 32 0 33 35 6 4968 6 4038 6 3116 0 33 0 34 36 6 2257 6 1340 6 0431 0 34 0 35 37 5 9676 5 8772 5 7...

Page 48: ...8812 1 8312 1 7824 0 76 0 77 68 1 8167 1 7678 1 7201 0 77 0 78 69 1 7548 1 7070 1 6603 0 79 0 80 70 1 6954 1 6486 1 6029 0 80 0 81 71 1 6383 1 5925 1 5479 0 82 0 83 72 1 5834 1 5387 1 4951 0 83 0 84 73 1 5308 1 4870 1 4443 0 85 0 86 74 1 4801 1 4373 1 3956 0 86 0 87 75 1 4315 1 3896 1 3488 0 88 0 89 76 1 3847 1 3437 1 3038 0 89 0 90 77 1 3397 1 2996 1 2606 0 91 0 92 78 1 2964 1 2572 1 2191 0 92 0 ...

Page 49: ...5811 0 73141 1 18 1 19 95 0 76260 0 73560 0 70948 1 20 1 20 96 0 74030 0 71387 0 68832 1 22 1 22 97 0 71876 0 69290 0 66790 1 23 1 23 98 0 69797 0 67266 0 64820 1 25 1 25 99 0 67788 0 65310 0 62917 1 27 1 27 100 0 65848 0 63422 0 61080 1 28 1 28 101 0 63973 0 61598 0 59306 1 30 1 30 102 0 62160 0 59836 0 57593 1 32 1 32 103 0 60409 0 58133 0 55937 1 34 1 33 104 0 58715 0 56487 0 54338 1 35 1 35 10...

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