Gas Heating / Electric Cooling with Puron® (R-410A) Refrigerant

48HC WeatherMaster® 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 environmentally sound Puron® (R-410A) refrigerant at the factory. The units are factory tested in both heating and cooling modes.

Performance Features

• ASHRAE 90.1 and Energy Star compliant
• Up to 15.6 SEER, 13.0 IEER, and 12.2 EER
• Gas efficiencies up to 82%
• Standard cooling operating range up to 125 °F (52°C) and down to 35°F (2°C). Low ambient controllers can bring cooling operation down to -20°F (-29°C)
• Innovative non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain
• Exclusive IGC solid-state control for on-board diagnostics with LED error code designation, burner control logic and energy saving indoor fan motor delay
• 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 and tool-less filter access door
• Innovative, easy starting, no-strip screw feature on unit access panels
• Optional hinged access panels also available
• Belt drive evaporator-fan motor and pulley combinations available on all three phase models to meet any application
• Electric Drive x13 (5 speed/torque) motor on 04 to 06 models
• Two-inch disposable return air filters

Installation Features

• Same footprint as installed Carrier 3-5 and 7.5-10 ton rooftops back to 1989,  reducing installation costs and time
• Field convertible from vertical to horizontal airflow for slab mounting (sizes 04 to 14)
• Provisions for thru-the-bottom power entry capability as standard
• Single point gas and electric 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
• Exclusive IGC anti-cycle protection for gas heat operation
• Solid-state electronic direct spark ignition system and flame roll-out safety protector