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Carrier’s WeatherMaker® rooftop units (RTUs) with Puron Advance™ and EcoBlue™ Fan Technology offer an eco-friendly solution for a brighter future.
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 control due to slow ramp-up capability Internal protection from phase reversal and phase loss situations High external static capability Reliable single (04-06 sizes) or 2-stage (07 size) cooling designs with fully active evaporator coils 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 For 48FE Ultra Low NOx units ONLY (sizes 04-06 only and excluding 575-v units): Carrier-exclusive Ultra Low NOx gas heat emissions burner box and heat exchanger design that provides 14 nanograms/ joule (ng/j) operation Our WeatherMaker 48/50FE 3 to 6 ton units 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 or different utility connections. Single-stage models deliver efficiencies of up to 13.4 SEER2, while two-stage models deliver efficiencies of up to 15.5 IEER. All models are field convertible and capable of either vertical or horizontal airflow. 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 3 to 6 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 compatibility Single point gas and electrical connections Fixed refrigerant metering devices on 3 to 5 ton models and TXV on 6 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 3 to 6 ton WeatherMaker units are field-convertible to horizontal airflow, which makes it easy to adjust to unexpected jobsite complications. Our units are light, making them easy to replace, and our standard integrated unit control board (UCB) 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. Should an adjustment be necessary, it can easily be made via the UCB in the control box. For regular service activities, our easy-access handles provide a quick solution to all commonly accessed service panels, and our sloped, corrosion-resistant composite drain pan sheds water and will not rust. Service gauge connections are included on compressor suction/discharge lines and 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 lowpressure switches, a filter drier, and 2-in. filters standard. For 48FE Ultra Low NOx units ONLY: the integrated gas control board operates an intelligent multi speed gas heat inducer motor to help reduce the ultra low NOx emissions. Note that: 1. Units cannot operate with Liquid Propane (LP) gas. 2. Units can operate from 0 to 2000 feet altitude only. 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 (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 factoryinstalled 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 a 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. Streamlined control and integration Carrier controllers make connecting WeatherMaker rooftops to existing building automation systems easy. The units are compatible with conventional thermostat controls, SystemVu controls, and third-party building management systems (BMS). Operating efficiency and flexibility The 48/50FE rooftops meet ASHRAE 90.1 and IECC®1 (International Energy Conservation Code) minimum efficiency requirements. Comfort control Carrier’s patented Humidi-MiZer adaptive dehumidification system is an allinclusive, 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. Prop 65 Warning: this product contains a chemical known to the State of California to cause cancer. P65Warnings.ca.gov
