Midea MRD M134H Series Packaged Heat Pump
13.4 SEER2
Capacity: 24 - 60 kBTU/h
Features
- High quality heat exchanger.
- Power-painted galvanized steel cabinet.
- Electric heat kit available as a field-installed option: 5/8/10/15/20kW.
- High-efficiency compressors operate smoothly, quietly, consistently.
- Fit universal curb, convenient installation and replacement.
- Horizontal or down flow application.
- Convenient access panels, slide out design for blower motor.
- AHRI Certified and ETL listed.
Nomenclature
The model number MRD M134H Series is broken down as follows:
| Position | Code | Remark |
|---|---|---|
| 1 | M | Brand: Midea |
| 2 | R | Packaged unit |
| 3 | D | Discharge type: C: Side discharge, D: Double deck |
| 4 | 24, 30, 36, 42, 48, 60 | Capacity: 24 to 60 kBTU/h |
| 5 | H | Unit type: C: cooling only, H: heat pump |
| 6 | W | Controller type: W: Wired controller |
| 7 | N1 | Refrigerant type: R410A |
| 8 | M, X | Power supply type: M: 1-Phase, X: 3-Phase |
| 9 | 134, 152 | Efficiency: 13.4 SEER, 15.2 SEER |
| 10 | G, L | Compressor type: G: GMCC compressor, L: LG compressor |
Specifications
| Model | Nominal Capacity Cooling (BTU/h) | Nominal Capacity Heating (BTU/h) | Voltage / Phase (60 Hz) | Min. / Max. Voltage | MCA | MOP | Compressor Type | Compressor Stage | Compressor RLA | Compressor LRA | Outdoor Coil Type | Outdoor Coil Tube Size(O.D) | Outdoor Fan Motor Type | Outdoor Fan Motor Capacitor(uF) | Outdoor Fan Motor Horsepower (HP) | Outdoor Fan Motor Full Load Amps (FLA) | Outdoor Fan Motor Rated RPM | Indoor Coil Type | Indoor Coil Tube Size(O.D) | Indoor Blower Motor Type | Indoor Blower Motor Capacitor(uF) | Indoor Blower Motor Horsepower (HP) | Indoor Blower Motor Full Load Amps (FLA) | Indoor Blower Motor Rated RPM | Refrigerant Control | Refrigerant Charge (lbs. - oz.) | Operation Range Cooling (°F) | Operation Range Heating (°F) | Sound Power (DB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MRD-24HWN1-M134G | 24,000 | / | 208/230/1 | 187/253 | 15.1 | 25 | Rotary | Single | 10.0 | 34.8 | Tube & Fin | 9/32 | PSC | 6 | 1/12 | 0.61 | 880 | Tube & Fin | 9/32 | PSC | 12 | 1/5 | 2.0 | 660 | Orifice | 6-6 | 55-115 | 5-86 | 73 |
| MRD-36HWN1-M134G | 36,000 | / | 208/230/1 | 187/253 | 24.2 | 40 | Rotary | Single | 16.0 | 72.0 | Tube & Fin | 9/32 | PSC | 6 | 1/6 | 1.0 | 830 | Tube & Fin | 9/32 | ECM | / | 1/2 | 855 | Orifice | 7-15 | 55-115 | 5-86 | 72 | |
| MRD-48HWN1-M134L | 48,000 | / | 208/230/1 | 187/253 | 35.1 | 50 | Scroll | Single | 23.0 | 108.0 | Tube & Fin | 9/32 | PSC | 15 | 1/3 | 1.9 | 1050 | Tube & Fin | 9/32 | PSC | 25 | 1/2 | 4.4 | 890 | Orifice | 9-4 | 55-115 | 5-86 | 78 |
| MRD-60HWN1-M134L | 60,000 | / | 208/230/1 | 187/253 | 38.4 | 50 | Scroll | Single | 26.0 | 127.9 | Tube & Fin | 9/32 | PSC | 15 | 1/3 | 1.9 | 1050 | Tube & Fin | 9/32 | PSC | 20 | 3/4 | 4.0 | 990 | Orifice | 11-14 | 55-115 | 5-86 | 78 |
| MRD-60HWN1-X14G | 60,000 | / | 208/230/3 | 187/253 | 35.2 | 50 | Rotary | Single | 22.0 | 136.8 | Tube & Fin | 3/16 | PSC | 15 | 1/3 | 2.0 | 1050 | Tube & Fin | 9/32 | ECM | / | 3/4 | 5.8 | 1025 | Orifice | 6-10 | 55-115 | 5-86 | 80 |
Dimensions
The following table provides the unit dimensions and weights:
| Model | Height (in.) | Width (in.) | Length (in.) | Net Weight (lbs.) |
|---|---|---|---|---|
| MRD-24HWN1-M134G | 46-13/16 | 35-1/16 | 50-11/16 | 400 |
| MRD-36HWN1-M134G | 46-13/16 | 35-1/16 | 50-11/16 | 411 |
| MRD-48HWN1-M134L | 51-7/16 | 46-13/16 | 50-9/16 | 537 |
| MRD-60HWN1-M134L | 51-7/16 | 46-13/16 | 50-9/16 | 568 |
| MRC-60HWN1-X14G | 51-7/16 | 46-13/16 | 50-9/16 | 557 |
Airflow Data
The following table presents airflow data for various models and speeds. The data is for reference only.
| Model Number | Motor Speed | External Static Pressure (Inches W.C. [kPa]) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 [0] | 0.1 [.02] | 0.2 [.05] | 0.3 [.07] | 0.4 [.10] | 0.5 [.12] | 0.6 [.15] | 0.7 [.17] | 0.8 [.20] | |||
| 24 | Low-Factory | SCFM / | 860 | 767 | 677 | 593 | / | / | / | / | |
| Watts / | / | 1.0 | 1.0 | 1.0 | 1.0 | / | / | / | / | ||
| Amps / | / | 229 | 225 | 222 | 218 | / | / | / | / | ||
| 24 Middle | SCFM / | / | / | / | 900 | 819 | 736 | 629 | / | / | |
| Watts / | / | / | / | 1.4 | 1.4 | 1.3 | 1.3 | / | / | ||
| Amps / | / | / | / | 314 | 309 | 303 | 298 | / | / | ||
| 24 High | SCFM / | / | / | / | / | / | 868 | 761 | 653 | 600 | |
| Watts / | / | / | / | / | / | 1.7 | 1.7 | 1.7 | 1.7 | ||
| Amps / | / | / | / | / | / | 384 | 376 | 370 | 365 | ||
| 36 Low (Tap2) | SCFM / | 1170 | 1107 | 1042 | 984 | 926 | 867 | / | / | / | |
| Watts / | 1.6 | 1.6 | 1.7 | 1.7 | 1.8 | 1.8 | / | / | / | ||
| Amps / | 176 | 182 | 188 | 194 | 200 | 206 | / | / | / | ||
| 36 Middle (Tap3) | SCFM / | 1339 | 1284 | 1224 | 1168 | 1119 | 1065 | 1014 | 961 | 900 | |
| Watts / | 2.2 | 2.2 | 2.3 | 2.3 | 2.4 | 2.4 | 2.5 | 2.5 | 2.6 | ||
| Amps / | 254 | 260 | 266 | 272 | 279 | 286 | 294 | 300 | 305 | ||
| 36 High (Tap4) | SCFM / | / | 1385 | 1328 | 1274 | 1226 | 1178 | 1128 | 1079 | 1031 | |
| Watts / | / | 2.6 | 2.7 | 2.7 | 2.8 | 2.9 | 2.9 | 3.0 | 3.0 | ||
| Amps / | / | 315 | 322 | 328 | 335 | 342 | 350 | 357 | 364 | ||
| 48 Low-Factory | SCFM / | / | / | / | 1897 | 1804 | 1715 | 1605 | 1511 | 1403 | |
| Watts / | / | / | / | 3.0 | 2.9 | 2.8 | 2.7 | 2.6 | 2.5 | ||
| Amps / | / | / | / | 685 | 663 | 643 | 615 | 582 | 557 | ||
| 48 Middle | SCFM / | / | / | / | / | 1904 | 1801 | 1689 | 1557 | 1432 | |
| Watts / | / | / | / | / | 3.2 | 3.1 | 3.0 | 2.9 | 2.8 | ||
| Amps / | / | / | / | / | 728 | 702 | 673 | 643 | 611 | ||
| 48 High | SCFM / | / | / | / | / | / | 1873 | 1757 | 1621 | 1500 | |
| Watts / | / | / | / | / | / | 3.4 | 3.3 | 3.2 | 3.0 | ||
| Amps / | / | / | / | / | / | 771 | 743 | 712 | 676 | ||
| 60 Low (Tap3) | SCFM / | 1784 | 1732 | 1675 | 1610 | 1548 | / | / | / | / | |
| Watts / | 2.6 | 2.7 | 2.7 | 2.8 | 2.9 | / | / | / | / | ||
| Amps / | 312 | 321 | 329 | 337 | 347 | / | / | / | / | ||
| 60 Middle (Tap4) | SCFM / | / | 2046 | 1996 | 1953 | 1900 | 1844 | 1790 | 1738 | 1676 | 1520 |
| Watts / | / | 3.7 | 3.8 | 3.9 | 3.9 | 4.0 | 4.1 | 4.2 | 4.3 | 4.6 | |
| Amps / | / | 459 | 471 | 481 | 492 | 503 | 514 | 527 | 538 | 577 | |
| 60 High (Tap5) | SCFM / | / | 2227 | 2185 | 2142 | 2094 | 2042 | 1991 | 1938 | 1761 | |
| Watts / | / | 5.1 | 5.2 | 5.2 | 5.3 | 5.4 | 5.5 | 5.6 | 5.7 | ||
| Amps / | / | 646 | 658 | 670 | 683 | 695 | 709 | 724 | 735 | ||
Note on Airflow Data:
- The airflow data is for reference only.
- In any situation, the airflow of the unit should be in the range of 80% to 130% of 400CFM/Ton.
- The air distribution system has the greatest effect on airflow and is controlled by the contractor. Contractors should use industry-recognized procedures.
- Heat pump systems require specified airflow. Each ton of cooling requires between 350 and 450 cubic feet of air per minute (CFM), or 400 CFM nominally.
- Duct design and construction are critical for system performance. Poor planning or workmanship can significantly lower performance.
- Air supply diffusers must be selected and located carefully to deliver treated air along the perimeter of the space. Improperly sized or located diffusers can cause noise or drafts. Return air grilles must be properly sized to carry air back to the blower; undersized grilles can also cause noise.
- Installers should balance the air distribution system for proper quiet airflow to all rooms, ensuring a comfortable living space.
- An air velocity meter or airflow hood can measure system CFM.
- When installing, select air speed according to the actual static pressure.
Electric Heat Kit Data
The following table details the electric heat kit options for the Midea MRD M134H Series:
| Capacity KBTU | Model | KW | Stages | Amps | MCA | Max Fuse Breaker Amps | Heater Fan Speed | ||
|---|---|---|---|---|---|---|---|---|---|
| L | M | H | |||||||
| 24 | EHK-05J | 3.8/5 | 1 | 18.1/20.8 | 23/26 | 25/30 | • | ||
| EHK-08J | 5.6/7.5 | 1 | 27.1/31.3 | 34/40 | 35/40 | X | • | ||
| EHK-10J | 7.5/10 | 1 | 36.1/41.7 | 46/53 | 50/60 | X | • | ||
| 36 | EHK-05J | 3.8/5 | 1 | 18.1/20.8 | 23/26 | 25/30 | • | ||
| EHK-08J | 5.6/7.5 | 1 | 27.1/31.3 | 34/40 | 35/40 | • | |||
| EHK-10J | 7.5/10 | 1 | 36.1/41.7 | 46/53 | 50/60 | X | • | ||
| EHK-15J | 11.3/15 | 2 | 54.2/62.5 | 68/79 | 70/80 | X | |||
| 48 | EHK-05J | 3.8/5 | 1 | 18.1/20.8 | 23/26 | 25/30 | • | ||
| EHK-08J | 5.6/7.5 | 1 | 27.1/31.3 | 34/40 | 35/40 | • | |||
| EHK-10J | 7.5/10 | 1 | 36.1/41.7 | 46/53 | 50/60 | X | • | ||
| EHK-15J | 11.3/15 | 2 | 54.2/62.5 | 68/79 | 70/80 | X | |||
| EHK-20J | 15/20 | 2 | 72.3/83.4 | 91/105 | 100/110 | X | |||
| 60 | EHK-05J | 3.8/5 | 1 | 18.1/20.8 | 23/26 | 25/30 | • | ||
| EHK-08J | 5.6/7.5 | 1 | 27.1/31.3 | 34/40 | 35/40 | • | |||
| EHK-10J | 7.5/10 | 1 | 36.1/41.7 | 46/53 | 50/60 | X | • | ||
| EHK-15J | 11.3/15 | 2 | 54.2/62.5 | 68/79 | 70/80 | X | |||
| EHK-20J | 15/20 | 2 | 72.3/83.4 | 91/105 | 100/110 | X | |||
Wiring Diagrams
The following diagrams illustrate the wiring for the Midea MRD M134H Series Packaged Heat Pump. Please note that the actual wiring may differ slightly from the diagrams provided.
General Wiring Notes:
- For 208 volts, remove the red lead from the "240V" terminal and connect it to the "208V" terminal on the transformer.
- The "W2" wire may not be provided in all models.
- "SW3" is exclusively for heat pump systems.
- "RV" is exclusively for heat pump systems; it may not be provided in some models.
- To set the indoor blower motor speed: Exchange the red and blue wires for medium speed; exchange the black and blue wires for high speed. The default setting is low speed.
- Use copper conductors only.
- The cabinet must be permanently grounded.
- All wiring must conform to I.E.C., N.E.C., C.L.C., and applicable local codes.
- Replacement wires must be the same gauge and insulation type as the original wires.
Main Board LED Code:
- Steady ON: Normal Operation
- OFF: DFC Failure
- 1 FLASH: T3 Sensor Failure
- 2 FLASH: T4 Sensor Failure
- 3 FLASH: LPC Open
- 4 FLASH: Power Phase Failure
SW3 Settings:
- SW3-1: ON = Manual Defrost, OFF = Automatic Defrost
- SW3-2: ON = Intelligent Defrost, OFF = Normal Defrost
- SW3-3: ON = Defrosting Cycle: 30 min, OFF = Defrosting Cycle: 60 min
Component Key:
- CC: Compressor Contactor
- CCH: Crankcase Heater
- COMP: Compressor
- DFC: Defrost Control
- HGS: Hot Gas Sensor
- HPC: High Pressure Cut-out Control
- IFM: Indoor Fan Motor
- LPC: Low Pressure Cut-out Control
- OFM: Outdoor Fan Motor
- RC1: Compressor Run Capacitor
- RC2: Outdoor Fan Motor Run Capacitor
- RC3: Indoor Fan Motor Run Capacitor
- RV: Reversing Valve
- GND: Ground Chassis
Wiring Status:
- Factory Standard
- Field Installed
- Factory Optional
Company Information
Midea Building Technologies Division
Midea Group
Add.: Midea Headquarters Building, 6 Midea Avenue, Shunde, Foshan, Guangdong, China
Postal code: 528311
Website: mbt.midea.com / global.midea.com / tsp.midea.com
Quality Assurance: ISO 9001
Environmental Management: ISO 14001
Occupational Health and Safety Management: ISO 45001
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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