WeatherExpert® Light Commercial Packaged High Outdoor Air System.

WeatherExpert® Light Commercial Packaged High Outdoor Air System

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

6 to 10 Nominal Tons

The WeatherExpert® packaged high outdoor air system is a special configuration of WeatherExpert packaged rooftop unit that can operate with up to 100% outdoor air for ventilation or make-up air in light commercial applications. The WeatherExpert 48LCH includes new options that enable 100% outdoor air operation, including modulating low load protection valve to prevent refrigerant circuit issues at low loads, modulating hot gas reheat for dehumidification with supply air temperature control, 5:1 turndown modulating gas heat for a wide heating operating range, and the exclusive EcoBlue™ vane axial supply fan a wide airflow range. All units include Carrier SmartVu™ controls for control flexibility, ease of setup and commissioning, and simplified troubleshooting.

Performance Features

  • Exceeds ASHRAE 90.1 and Energy Star efficiency levels, as well as Consortium for Energy Efficiency (CEE) criteria
  • 6, 7.5, and 10 ton nominal capacities with three-stage cooling capacity control
  • Up to 17.5 SEER and 20.8 IEER
  • 6 to 10 ton models have standard cooling operation up to 125° F (52° C) and down to 40° F (4° C)
  • EcoBlue™ vane axial supply fan with ECM motor provides up to 3” of external static capability at up to 350 CFM/ton
  • Modulating hot gas reheat for supply air temperature control with dehumidification
  • Standard turndown (5:1) modulating natural gas heat with stainless steel heat exchanger and up to 100°F (37°C) temperature rise capability

Maintenance Features

  • SmartVu control provides service reminders and alarming capability
  • Factory installed suction and discharge pressure sensors, readable from the SmartVu control interface
  • Access panels with easy grip handles and tool-less filter access door
  • Hinged access panels on filter, control box, compressor, and fan motor compartments
  • Innovative, easy starting, no-strip screw feature on remaining service panels
  • Two-inch disposable return air filters
  • Direct drive evaporator fan motor eliminates belt maintenance
  • Standard condensate overflow switch alerts user to clogged condensate drains

Installation Features

  • Field convertible from vertical to horizontal airflow (accessory kit required for size 08-10)
  • Provisions for thru-the-bottom power entry capability as standard
  • Single point electric, gas, and controls connections
  • Full perimeter base rail with built-in rigging adapters and fork truck slots
  • Factory installed OAT, OARH, RAT, RARH, and SARH sensor
  • Factory supplied, field installed SAT sensor
  • SmartVu control provides application and control flexibility

Reliability Features

  • Scroll compressors with internal line-break overload protection
  • 24-volt control circuit protected with resettable circuit breaker
  • Permanently lubricated, direct drive supply fan motor
  • Totally enclosed condenser motors with permanently lubricated bearing
  • High-pressure switch protection
  • Refrigerant circuit pressure monitoring
  • Integral gas heat control system

Standard Limited Warranty

  • 15 years parts only heat exchanger – stainless steel
  • 5 years parts only compressor
  • 3 years parts only on ComfortLink controls
  • One year parts only on all other parts
  • Extended warranty packages available

Factory-Installed Options

  • High turndown (10:1) modulating natural gas furnace
  • Return air or supply air smoke detector
  • Return air carbon dioxide (CO2) sensor
  • High static direct drive supply fan motor
  • Duct pressure transducer for duct pressure control of supply fan speed
  • Building pressure transducer for zone pressure control of supply fan speed
  • Pre-coat or E-coat condenser or evaporator/HGRH coil
  • Louvered hail guards
  • Ultra low leak economizer with barometric relief
  • 4” filter rack with MERV 8 or MERV 13 filters
  • Powered or non-powered convenience outlet
  • HACR circuit breaker or non-fused disconnect
  • Through the base electric & gas connections
  • Double wall construction with galvanized steel liner over R4 insulation

Field-Installed Accessories

  • High elevation kit (2000-7000 ft) for natural gas furnaces
  • LP conversion kit for natural gas furnaces
  • Knockdown roof curbs
  • Modulating power exhaust
  • Supply duct cover for vertical to horizontal supply conversion (size 08-12)
  • Through the base electric & gas connections
  • 4” filter rack with MERV 8 or MERV 13 filters
  • Louvered hail guards
  • Return air or supply air smoke detector
  • Horn/strobe annunciator and remote test/reset station for smoke detector
  • Return air carbon dioxide (CO2) sensor