48LC WEATHEREXPERT®
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Ultra High Efficiency Gas Heat/Electric Cooling Packaged Rooftop Product Data Carrier's Most Efficient Commercial Rooftop Ever!

TABLE OF CONTENTS PAGE MODEL NUMBER NOMENCLATURE . . . . . . . . . . . . 5 FACTORY OPTIONS AND/OR ACCESSORIES . . . . . 7 ECONO, BARO RELIEF & PE PERFORMANCE . . . 26 AHRI COOLING RATING TABLES . . . . . . . . . . . . . . . 9 SOUND PERFORMANCE TABLE . . . . . . . . . . . . . . . 10 CURBS & WEIGHTS DIMENSIONS . . . . . . . . . . . . . 13 OPTIONS AND ACCESSORY WEIGHTS . . . . . . . . . 17 Carrier’s rooftop units (RTU) are designed by customers for customers. These new WeatherExpertt models are Carrier’s highest efficient models ever produced and not only help reduce energy cost while...

CARRIER’S MOST EFFICIENT COMMERCIAL ROOFTOP EVER DESIGNED Ideal for Replacement or New Construction 1. Full perimeter base rails with built in rigging provisions. Unit has the same footprint as the current standard efficiency and high efficiency models. Units fit on the same Carrier roof curb dating back to the late 1980’s making it ideal for replacement and new construction. 2. Electrical mechanical controls, RTU Open multi protocol or ComfortLink integrated controls that provides: - Scrolling marquee display - Reverse rotation protection - Service diagnostics and alarms - Alarm and run...

UNIT FEATURES S Two stage cooling capacity control scroll compressors with crankcase heater S Belt drive indoor fan and pulley system with Variable Frequency Drive (VFD) motor controller and display or direct drive (multi speed/torque) ECM motor. S SEER up to 17.5 with direct drive ECM indoor fan motor, up to 16.4 SEER with belt drive/VFD indoor fan motor S Electro- mechanical controls that provide cooling operation down to 10_F (- 12_C) - S Optional ComfortLink Controls that provide cooling operation down to 0_F (- 18_C) and: - Communications via stand alone thermostat or sensor -...

MODEL NUMBER NOMENCLATURE 1 Unit Type 48 = Gas Heat Packaged Rooftop Brand / Packaging 0 = Standard 1 = LTL Electrical Options A = None B = HACR Breaker C = Non--- fused disconnect D = Thru the base connections E = HACR Breaker & thru the base F = Non--- fused & thru the base Model Series---WeatherExpert LC = Ultra High Efficiency Heat Size D = Low gas heat E = Medium gas heat F = High gas heat L = Low NOx, low gas heat M = Low NOx, medium gas heat N = Low NOx, high gas heat S = Low heat with stainless steel exchanger R = Med heat with stainless steel exchanger T = High heat with stainless...

Table 1 – FACTORY- INSTALLED OPTIONS AND FIELD- INSTALLED ACCESSORIES CATEGORY Cabinet Coil Options Condenser Protection Economizers & Outdoor Air Dampers Economizer Sensors & IAQ Devices Indoor Motor & Drive Power Options Roof Curbs FACTORY INSTALLED OPTION ITEM Thru ---the ---base electrical or gas---line connections Hinged access panels Cu/Cu indoor and/or outdoor coils Pre ---coated outdoor coils Premium, E ---coated outdoor coils Condenser coil hail guard (louvered design) Thermostats, temperature sensors, and subbases ComfortLink Controls RTU Open Multi ---Protocol Controller Smoke...

FACTORY OPTIONS AND/OR ACCESSORIES Economizer (dry-bulb or enthalpy) Non-fused Disconnect Economizers save money. They bring in fresh, outside air for ventilation; and provide cool, outside air to cool your building. This is the preferred method of low- ambient cooling. When coupled to CO2 sensors, economizers can provide even more savings by coupling the ventilation air to only that amount required. This OSHA- compliant, factory- installed, safety switch allows a service technician to locally secure power to the rooftop. Economizers include gravity controlled, barometric relief equalizes...

FACTORY OPTIONS AND/OR ACCESSORIES (cont.) Flue Discharge Deflector Thru- the- Base Connections - The flue discharge deflector is a useful accessory when flue gas recirculation is a concern. By venting the flue discharge upwards, the deflector minimizes the chance for a neighboring unit to intake the flue exhaust. Thru- the- base connections, available as either an - accessory or as a factory option, are necessary to ensure proper connection and seal when routing wire and piping through the rooftop’s basepan and curb. These couplings eliminate roof penetration and should be considered for...

COOLING STAGES 2- STAGE COOLING W/DIRECT DRIVE ECM INDOOR MOTOR - Table 3 – AHRI COOLING RATING TABLE 48LC COOLING STAGES LEGEND ----- Not Applicable AHRI --- Air Conditioning, Heating and Refrigeration Institute Test Standard ASHRAE --- American Society of Heating, Refrigerating and Air Conditioning, Inc. EER --- Energy Efficiency Ratio SEER --- Seasonal Energy Efficiency Ratio 2- STAGE COOLING WITH BELT DRIVE INDOOR MOTOR NET COOLING CAPACITY (MBH) 34.6 46.5 58.0 NOTES: 1. Rated in accordance with AHRI Standards. 2. Ratings are based on: Cooling Standard: 80_F (27_C) db, 67_F (19_C) wb...

Table 5 – HEATING RATING TABLE - LOW NOX1 48LC LOW MED HIGH LOW MED HIGH LOW MED HIGH THERMAL EFFICIENCY (%) --- Not Applicable NOTE: 1. Units meet California’s South Coast Air Quality Management District (SCAQMD) Low ---NOx emissions requirement of 40 nanograms per joule or less. NOTES: 1. Outdoor sound data is measure in accordance with AHRI. 2. Measurements are expressed in terms of sound power. Do not compare these values to sound pressure values because sound pressure depends on specific environmental factors which normally do not match individual applications. Sound power values are...

# Stages/ # Comp. / Type R--- 410A charge A/B (lbs --- oz) Metering device High--- press. Trip / Reset (psig) Low--- press. Trip / Reset (psig) Material Coil type Rows / FPI Total Face Area (ft2) Condensate Drain Connection Size Standard Static Motor Qty / Drive type Max BHP RPM range Motor Frame Size Fan Qty / Type Fan Diameter (in) Medium Static Motor Qty / Drive type Max BHP RPM range Motor Frame Size Fan Qty / Type Fan Diameter (in) High Static Table 8 – PHYSICAL DATA Motor Qty / Drive type Max BHP RPM range Motor Frame Size Fan Qty / Type Fan Diameter (in) Refrigeration System...