Electric Cooling Units with Optional Electric Heat
3 to 5 Nominal Tons
50KC WeatherMaker® rooftop units were designed by customers for customers. With a gauge plug, centralized control center, plug & play accessory board, “no-strip screw” collars, and handled access panels, we’ve made the unit easy to install, easy to maintain, and easy to use. Units are pre-wired and pre-charged with Puron® (R-410A) refrigerant at the factory. The units are factory tested in cooling mode.
Performance Features
- ASHRAE 90.1 compliant
- Single-stage cooling capacity control
- Up to 14.1 SEER and 12.0 EER
- Cooling operating range up to 115 °F (46°C) and down to 25°F (-4°C) using winter start kit
- Innovative non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain
- Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection
Maintenance Features
- Control terminal board facilitating simple safety circuit troubleshooting and simplified control box arrangement
- Access panels with easy grip handles
- Innovative, easy starting, no-strip screw feature on unit access panels
- Tool-less filter access door
- Optional hinged access panels also available
- Direct Drive – ECM indoor fan motor standard with optional belt drive systems available
- Two-inch disposable return air filters
Installation Features
- Same footprint as installed Carrier 3-5 ton rooftops back to 1989, reducing installation costs and time
- Field convertible from vertical to horizontal airflow configuration
- Provisions for thru-the-bottom power entry capability as standard
- Single point gas, electric, and controls connections
- Full perimeter base rail with built-in rigging adapters and fork truck slots
Reliability Features
- Scroll compressors with internal line-break overload protection
- 24-volt control circuit protected with resettable circuit breaker
- Permanently lubricated evaporator-fan motor
- Totally enclosed condenser motors with permanently lubricated bearings
- Low pressure and high-pressure switch protection
- Liquid line filter drier as standard
| Factory-Installed | Field-Installed | |
| Cabinet | ||
| Thru the base electrical or gas line connections | X | X |
| Hinged access panels | X | |
| Coil Options | ||
| Cu/Cu indoor and/or outdoor coils | X | |
| Pre-coated outdoor coils | X | |
| Premium, e-coated outdoor coils | X | |
| Humidity Control | ||
| Humidi-MiZer adaptive dehumidification system (3-phase models only) | X | |
| Condenser Protection | ||
| Condenser coil hail guard (louvered design) | X | X |
| Controls | ||
| Thermostats, temperature sensors and subbases | X | |
| PremierLink DDC communicating controller | X | X |
| RTU Open multi-protocol controller | X | X |
| Smoke detector (supply and/or return air) | X | |
| Time Guard II compressor delay control circuit | X | |
| Filter status switch | X | |
| Fan status switch | X | |
| Economizers & Outdoor Air Dampers | ||
| EconoMi$er IV (for electro-mechanical controlled RTUs) | X | X |
| EconoMi$er X (for electro-mechanical controlled RTUs with CA Title 24 FDD) | X | X |
| EconoMi$er 2 (for DDC controlled RTUs) | X | X |
| Ultra-low leak economizer dampers | X | X |
| Motorized 2-position outdoor air damper | X | X |
| Manual outdoor dir damper | X | |
| Barometric relief | X | X |
| Power exhaust | X | |
| Economizer Sensors & IAQ Devices | ||
| Single dry bulb temperature sensors | X | X |
| Differential dry bulb temperature sensors | X | |
| Single enthalpy sensors | X | X |
| Differential enthalpy sensors | X | |
| CO2 sensor (wall, duct, or unit mounted) | X | X |
| Electric Heat | ||
| Multiple electric resistance heater kW sizes | X | |
| Single point kit | X | |
| Indoor Motor & Drive | ||
| Multiple motor and drive packages | X | |
| Low Ambient Control | ||
| Winter start kit | X | |
| Motormaster head pressure controller | X | |
| Power Options | ||
| Convenience outlet (powered) | X | |
| Convenience outlet (unpowered) | X | |
| Non-fused disconnect | X | |
| Roof Curbs | ||
| Roof curb 14'' (356mm) | X | |
| Roof curb 24'' (610mm) | X | |
| Nominal Cooling Ton Size | Cooling Stages | AHRI Efficiency (SEER) EER | Dimensions (in) LxWxH | Electric Heat Nominal kW Range | Approx. Unit Weight (lbs) |
|---|---|---|---|---|---|
| 3 | 1 | (14.0) | 74x47x33 | 4.0 to 20.0 | 445 |
| 4 | 1 | (14.0) | 74x47x33 | 4.0 to 20.0 | 499 |
| 5 | 1 | (14.1) | 74x47x41 | 5.0 to 25.0 | 552 |
US 9062 
GB 7923 
AU 7329 
CA 7072 
IE 3891 
NZ 3826 
BR 2493 
VN 2100 
