High Ambient Cooling RTU 6.2-30 Ton 52°C Operation
When the only mission is reliable cooling under the most punishing thermal conditions, this is the unit that does not flinch.
Product Overview
For facility managers operating in tropical, subtropical, or desert climates, cooling is not a comfort amenity - it is mission-critical infrastructure. The Midea MRCT Cooling Only Rooftop Unit was engineered specifically for environments where cooling reliability directly determines revenue continuity. With capacity spanning 22 to 98 kW (6.2-30 Ton) and an operating range that extends to 52°C outdoor ambient, the MRCT series maintains full rated output when competing units have already entered protective lockout.
The MRCT design philosophy centers on doing one thing exceptionally well. Without the complexity of a reversing valve and heating circuit, the system has fewer components to fail, fewer circuits to charge, and a simpler maintenance profile. For facilities where heating is provided by separate infrastructure, the MRCT series offers a focused, cost-effective cooling solution without paying for unused heating capacity.
Key Features
Extreme High-Ambient Cooling Performance
The defining characteristic of the MRCT series is its ability to deliver full rated cooling capacity at outdoor temperatures that would force most conventional rooftop units into capacity derating or compressor lockout.
- Validated full-load cooling operation at 52°C outdoor ambient without capacity derating
- Operating range of 10°C to 52°C covers complete thermal profile of tropical and desert climates
- Oversized condenser coil design enables heat rejection at extreme temperature differentials
- Copeland scroll compressor maintains volumetric efficiency at high compression ratios
- 100% factory performance testing validates nameplate capacity before shipment
Simplified System, Lower Lifetime Complexity
A cooling-only configuration is not a compromise - it is an optimization that reduces total component count and statistical probability of field failures.
- Fewer system components than heat pump equivalents reduce total failure modes
- No reversing valve eliminates a common failure point
- Copeland scroll compressor has no internal valves, resulting in fewer wear items
- Simplified control logic shortens troubleshooting time
Operating Cost Management Through Economizer Integration
The MRCT series addresses energy costs through its optional economizer package, which modulates outside air intake based on enthalpy comparison.
- Optional economizer with enthalpy-based control captures free cooling opportunities
- Free cooling mode enables full compressor bypass during favorable conditions
- EER ratings up to 11.3 Btu/h per W ensure maximum cooling output per unit of electricity
- Reduced compressor runtime extends maintenance intervals and service life
Maintenance Accessibility Designed for Rooftop Realities
The MRCT series addresses rooftop service challenges with deliberate serviceability features designed for efficient maintenance.
- Full-width removable access panels provide unobstructed technician access
- External pressure gauge ports eliminate need to open refrigerant circuit panels
- Self-diagnostic LED fault display enables instant fault identification
- Washable, reusable filters eliminate recurring replacement cost
Corrosion Protection for Decades of Rooftop Exposure
The MRCT cabinet uses G90 galvanized steel with comprehensive corrosion protection to ensure structural integrity persists throughout service life.
- G90 galvanized steel cabinet with 275 g per square meter zinc coating
- 500-hour neutral salt spray certification provides validated corrosion resistance
- Heat exchanger anti-corrosion treatment delivers 5-6 times improvement over standard coils
- Double-sided moisture-proof lacquer on PCB boards prevents humidity-induced failures
Replacement Project Compatibility and Quick Deployment
The MRCT series was designed to minimize disruption during replacement projects with features that streamline installation.
- Compact vertical side-discharge footprint often matches existing curb dimensions
- Factory pre-assembly with wiring, charge, and performance certification
- 6.2-30 Ton range covers majority of commercial replacement requirements
- Supports both rooftop curb mounting and ground-level pad installation
Technical Specifications
| Cooling Capacity | 22-98 kW (6.2-30 Ton) |
| Compressor | Copeland Scroll |
| Refrigerant | R410A |
| Cooling Operating Range | 10°C to 52°C |
| Cabinet Material | G90 Galvanized Steel |
| Corrosion Protection | 500h Neutral Salt Spray Test |
| Economizer | Optional |
| Free Cooling | Optional |
| Power Supply | 380-415V 3N~ 50Hz |
| Warranty | 5 Years |
| Origin | China |
Applications
Data centers and server rooms
Manufacturing plants
Commercial kitchens and food processing
Telecommunications switch rooms
Shopping malls and big-box retail
Warehouse and cold-chain logistics
Hospitality and entertainment venues
Municipal and institutional buildings
Certifications & Standards
- AHRI Certified - performance ratings independently verified
- ETL Listed - electrical safety compliance for North American installations
- CE Marking - European market regulatory compliance
- ISO 9001 - quality management system certification
- 500h Neutral Salt Spray Test - corrosion resistance validated per ASTM protocols
- TUV inspected manufacturing facility
- 100 percent factory run test on every unit before shipment
Contact Information
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