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0 = Standard Electromechanical Controls (can be used with field installed economizers and dampers) / Base Unit Controls
A = None / Intake / Exhaust Options
0 = None / Service Options
A = None / Electrical Options
0 = Standard / Packaging
Carrier’s WeatherMaker® rooftop units (RTUs) with Puron Advance™ and EcoBlue™ Fan Technology offer an environmentally responsible solution for a brighter future.
For over 70 years the WeatherMaker line has stood for cooling solutions that are innovative, high quality, and easy to use. Carrier’s new 48/50FE rooftops continue our legacy of progress with Puron Advance, our low global warming potential refrigerant. With competitive efficiencies, EcoBlue fan technology, locally available stock, and direct fit footprints, new installations and replacements are easier than ever.
New major design features include:
Environmentally balanced Puron Advance (R-454B) refrigerant, which delivers a 75% reduction in global warming potential (GWP) compared to the original Puron. Puron Advance’s GWP of 466 easily exceeds the EPA (Environmental Protection Agency) requirement of <700 GWP.
A patented, industry-first vane axial indoor fan system with an electronically commutated motor for simplicity and efficiency. When compared to traditional belt-driven forward curve fans, our reliable system has:
- 75% fewer moving parts
- Up to 40% greater efficiency
- No fan belts, pulleys, shaft, or shaft bearings
- Better sound and comfort due to slow ramp-up capability
- Internal protection from phase reversal and phase loss situations
- High external static capability
- Slide-out blower assembly design
Reliable and highly safety protected 2 stage cooling with tandem scroll compressors technology, fully active evaporator coil, and mixed air temperature protection on all models
Unit control board (UCB) with intuitive indoor fan adjustment that uses simple dial and switch configuration
Reliable copper tube/aluminum fin condenser coil with 5/16 in. tubing to help reduce refrigerant charge and weight versus prior designs
Our WeatherMaker 48/50FE units up to 15 ton are specifically designed to fit on Carrier roof curbs installed as far back as 1989. That makes replacements fast and easy, eliminating the need for curb adapters, different utility connections, or supporting curb overhang situations.
Two-speed staged air volume (SAV) indoor fan speed control helps deliver IEERs up to 15.2. All models are field convertible and capable of either vertical or horizontal airflow. The 15 ton models require a field-installed supply air kit. With “no-strip” screw collars, handled access panels, and more, the unit is easy to install, easy to maintain, and easy to use. Your new 7.5 to 15 ton Carrier WeatherMaker RTU provides optimum comfort and control from a packaged rooftop.
Value-added features include:
Optional Humidi-MiZer® adaptive dehumidification system for improved part load humidity performance
SystemVu™ intuitive intelligent controls option that provides:
- Large, full text, multi-line display
- USB flash port for data transfer
- Built-in i-Vu®, CCN, and BACnet®
- Easy to read refrigerant pressures shown via the display — no checking gauges
- Quick LED Status for Run, Alert, and Fault
- Conventional thermostat or sensor capabilities
- Historical component runtime and starts
- Supply air tempering
- Network Service Tool compatible
Single point gas and electrical connections
TXV refrigerant metering devices on 7.5 to 15 ton models
Scroll compressors with internal line-break overload protection
Easy-to-access tool-less filter door, filter tracks that tilt out for filter removal and replacement, and filter size consistency across units
Easy to install
All 7.5 to 15 ton WeatherMaker units are field-convertible to horizontal airflow, which makes it easy to adjust to unexpected jobsite complications. The 15 ton models require a simple supply duct cover kit to field convert from factory vertical to horizontal. Our units are light, making them easy replace and aiding in the structural approval process. Our standard integrated unit control board has simple, fast, clearly labeled plug-in connection points that reduce installation time. Should a job need additional features, our large control box provides room to work and mount Carrier accessories.
Easy to maintain
With the EcoBlue vane axial fan system and a direct drive ECM motor, belts and pulleys are a thing of the past. This frees up maintenance, installation and commissioning time. Should an adjustment be necessary, it can easily be made via the UCB in the control box. For regular service activities, our easyaccess handles provide a quick solution to all commonly accessed service panels, and our sloped, corrosionresistant composite drain pan sheds water and will not rust. Service gauge connections are included on compressor suction/discharge lines before and after the filter drier to monitor system operation during maintenance.
Easy to use
Carrier’s re-designed unit control board puts all connections and troubleshooting points in one convenient place. Most low voltage connections use the same board and are easy to access. Setting up the fan is simple using an intuitive switch and rotary dial arrangement. Our rooftops have high and low pressure switches, a new mixed air temperature switch, a filter drier, and 2 in. filters standard.
Puron Advance™ Features
In 2018, Carrier announced Puron Advance (R-454B) as our next generation refrigerant for light commercial rooftops. With a GWP of 466 and similar working pressure and performance to R-410A, Puron Advance easily exceeds the EPA’s new, stringent <700 GWP refrigerant requirement while minimizing unit redesign. Like other next generation refrigerants (R-32, etc.), R-454B is classified as an “A2L” refrigerant by ASHRAE®1 (American Society of Heating, Refrigerating, and Air-Conditioning Engineers). This designation means that R-454B is “mildly flammable” under certain conditions. While this is a change from legacy “A1 - No Flame Propagation” refrigerants like Puron (R-410A), A2Ls are still very low on the flammability scale and quite safe for use. A2L refrigerants are difficult to ignite and have an extremely low flame speed - much less so than natural gas, propane, or even rubbing alcohol. At Carrier, we are committed to safety. As such, all of our Puron Advance rooftop units include a factory-installed dissipation control board and leak sensor designed to last the lifetime of the unit. This system is certified to UL 60335-2-40 and designed to work right away, without any field configuration or wiring. In the event of a leak, these systems automatically identify and resolve the issue by safely dissipating the refrigerant to ensure there is no risk to equipment, buildings, or occupants.
EcoBlue™ Technology
Our direct drive EcoBlue indoor fan system uses vane axial fan and electronically commutated motor. The benefit is clear: when compared to legacy belt drive systems, this vane axial design has 75% fewer moving parts, uses up to 40% less energy, and has no belts, blower bearings, or shaft. The full fan and motor assembly also slides out for easier maintenance and service.
Streamlined control and integration
Carrier controllers make connecting WeatherMaker rooftops into existing building automation systems easy. The units are compatible with conventional thermostat controls or SystemVu controls for greater comfort, diagnostics, and building network integration.
Operating efficiency and flexibility
The 48/50FE rooftops meet the DOE 2023 efficiency standard, as well as ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers) 90.1 and IECC®1 (International Energy Conservation Code) requirements.
Comfort control
Carrier’s patented Humidi-MiZer® adaptive dehumidification system is an all-inclusive factory-installed option on gas heating/electric cooling and electric cooling/electric heat models. This system provides reliable, flexible operation to meet indoor part load sensible and latent requirements as well as multiple gas heat and electric heat sized to fit an array of applications.
Prop 65
Warning: this product contains a chemical known to the State of California to cause cancer. P65Warnings.ca.gov
