48 = Gas Heat Packaged Rooftop / Unit Heat Type
GC = 16 SEER Efficiency / Model Series - WeatherMaster®
E = Medium Gas Heat / Heat Options
M = Two Stage Cooling / Refrig. Systems Options
05 = 4 Ton / Cooling Tons
A = None / Sensor Options
2 = Direct Drive EcoBlue - Medium Static / Indoor Fan Options
A = Al/Cu - Al/Cu / Coil Options - Round Tube/Plate Fin Condenser Coil (Outdoor - Indoor)
5 = 208-230/3/60 / Voltage
– = Factory Design Revision / Design Revision
0 = Electro-mechanical Controls - can be used with field-installed W7212 EconoMi$er® IV (Non-Fault Detection and Diagnostic) / Base Unit Controls
A = None / Intake / Exhaust Options
0 = None / Service Options
A = None / Electrical Options
0 = Standard / Factory Assigned
The New Carrier WeatherMaster® rooftop units (RTU) with EcoBlue™ Technology were designed by customers for customers and integrate new technology to provide value added benefits never seen in this type of equipment before.
New major design features include:
- Patent pending, Industry’s first efficient indoor fan system using Vane Axial Fan technology - with electric commutated variable speed motor.
- Reliable two stage scroll compressor on all sizes.
- Upgraded unit control board with intuitive indoor fan adjustment.
- Reliable copper tube/aluminum fin condenser coil with 5/16-in. tubing to help reduce refrigerant charge verses prior designs.
- New outdoor fan system with rugged - lightweight high impact composite fan blade
Two stage cooling capacity control delivers SEERs up 16.0. All models are capable of either vertical or horizontal airflow.
The Carrier rooftop unit (RTU) was designed by customers for customers. 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 5 ton WeatherMaster Carrier rooftop unit (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
- Puron® refrigerant (R-410A)
- Single point gas and electrical connections
- Optional fully integrated SystemVu™ controls
- RTU Open controller for BACnet1, LonWorks2, Modbus3 and Johnson Controls N2
- Optional fully insulated cabinet with optional foil faced insulation
- TXV refrigerant metering system
- Scroll compressors with internal line-break overload protection
All WeatherMaster units are field-convertible to horizontal airflow, which makes it easy to adjust to unexpected job-site complications. Lighter units make for easy replace. Simple, fast plug-in connections to the standard integrated unit control board (UCB). Clearly labeled connections points to reduce installation time. Also, a large control box provides room to work and room to mount Carrier accessory controls.
Easy to maintain
With the new Vane Axial fan and direct drive ECM motor - there is no longer a need to adjust belts or pulleys as in past designs. This frees up maintenance and installation time.
Easy access handles by Carrier provide quick and easy access to all normally serviced components. Our "no-strip" screw system has superior holding power and guides screws into position while preventing the screw from stripping the unit’s metal.
Sloped, corrosion resistant composite drain pan sheds water; and won’t rust.
On 48GC units the Carrier designed naturally draining heat exchanger, unlike positive pressure heat exchangers, does not need to be periodically, manually drained. This saves labor and maintenance expense.
Easy to use
The newly re-designed Unit Control Board by Carrier puts all connections and troubleshooting points in one convenient place. Most low voltage connections are made to the same board and make it easy to access it. Setting up the fan is simple by an intuitive switch and rotary dial arrangement.
Carrier rooftops have high and low pressure switches, a filter drier, and 2-in. filters standard.
Direct drive EcoBlue™ Technology indoor fan system uses Vane Axial fan design and electrically commutated motors.
This new Vane Axial design over past belt drive systems has 75% fewer moving parts, uses up to 40% less energy and has no fan belts, blower bearings and shaft.
Streamlined control and integration
Carrier controllers make connecting WeatherMaster® rooftops into existing building automation systems easy. The units are compatible with conventional thermostat controls, SystemVu™ controls and Carrier RTU Open multi-protocol controller.
Operating efficiency and flexibility
The 48/50GC rooftops exceed ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers) 90.1-2016, IECC1 (International Energy Conservation Code) IECC-2018 minimum efficiency requirements.
Field convertible airflow
All WeatherMaster 3 to 5 ton units are field-convertible to horizontal airflow, which makes it easy to adjust to unexpected job-site.
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.
|Weight||555 Pounds (lbs)|
|Width||46.625 Inches (In)|
|Height||33.375 Inches (In)|
|Country of Origin||Var|
|Length||74.375 Inches (In)|
|Blower Motor HP||1 3/50 BHP|
|Blower Motor RPM||217-2170|
|Blower Motor Speeds||Variable|
|Blower Motor Type||ECM (Electronically Commutated Motor)|
|Circuit Breaker - Max Amps||30,40|
|Condenser Motor HP||1/4 HP|
|Condenser Motor RPM||900-1100|
|Condenser Motor Speeds||Multiple|
|Condenser Motor Type||Direct Drive|
|Cooling Rated Capacity Btu/h||48000|
|Drain Connection Size||3/4"|
|Energy Star Rated||No|
|Filter Size||(2) 16" x 25" x 2" RA Filter, 20" x 24" OA Inlet Screen|
|Locked Rotor Amps||83|
|Minimum Circuit Amps||27,26|
|Rated Load Amps||14|
|Sound Level (dBA)||79|