48HC WEATHERMASTER®
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High Efficiency Gas Heat/Electric Cooling Packaged Rooftop Product Data the environmentally sound refrigerant

TABLE OF CONTENTS PAGE MODEL NUMBER NOMENCLATURE . . . . . . . . . . . . 4 FACTORY OPTIONS AND/OR ACCESSORIES . . . . . 6 STATIC PRESSURE ADDERS . . . . . . . . . . . . . . . . . . 54 AHRI COOLING RATING TABLES . . . . . . . . . . . . . . 10 ECONO, BARO RELIEF & P.E. PERFORMANCE . . 54 SOUND PERFORMANCE TABLE . . . . . . . . . . . . . . . 11 CURBS & WEIGHTS DIMENSIONS . . . . . . . . . . . . . 18 OPTIONS AND ACCESSORY WEIGHTS . . . . . . . . . 33 The Carrier rooftop unit (RTU) was designed by customers for customers. With “no- strip” screw collars, handled access panels, and more we’ve made...

FEATURES AND BENEFITS S Single- stage cooling capacity control on 04 to 07 models, 2- stage cooling capacity control on 08 to 14 models S SEER up to 15.6, EER up to 13.0 S IEER’s up to 13.0 with single speed indoor fan motor, and up to 14.3 with SAVt (Staged Air Volume) 2- speed/VFD indoor fan motor system S Exclusive non- corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain S Gas efficiencies up to 82% S Induced draft combustion design S Redundant gas valve, with up to 2 stages of heating S Pre- painted exterior panels and primer-...

MODEL NUMBER NOMENCLATURE 1 Product Type 48 = Gas Heat Pkg. Rooftop Electrical Options A = None B = HACR breaker C = Non--- fused disconnect D = Thru--- the--- base Connections F = Non--- fused Disconn & thru--- the--- base G = 2--- speed indoor fan (VFD) controller J = 2--- spd contr (VFD) & non--- fused disc. K = 2 spd contr & thru--- the--- base L = 2spd fan contr (VFD) &non--- fused disc N = 2 spd contr w/non--- fused disc & thru--- the--- base conn. Heat Size D = Low Gas Heat E = Medium Gas Heat F = High Gas Heat L = Low Nox --- Low gas heat M = Low Nox --- Med gas heat N = Low Nox ---...

Table 1 – FACTORY- INSTALLED OPTIONS AND FIELD- INSTALLED ACCESSORIES CATEGORY Coil Options Humidity Control Condenser Protection Economizers & Outdoor Air Dampers Economizer Sensors & IAQ Devices Indoor Motor & Drive Low Ambient Control Power Options Roof Curbs ITEM Thru ---the ---base electrical or gas---line connections Hinged access panels Supply duct cover --- 14 size only Foil faced insulation throughout entire cabinet Cu/Cu indoor and/or outdoor coils1 Pre ---coated outdoor coils1 Premium, E ---coated outdoor coils1 Humidi ---MiZer Adaptive Dehumidification System1 Condenser coil...

FACTORY OPTIONS AND/OR ACCESSORIES Economizer (dry-bulb or enthalpy) Power Exhaust with Barometric Relief 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. Superior internal building pressure control. This field- installed accessory may eliminate the need for costly, external pressure control fans. Economizers are available,...

FACTORY OPTIONS AND/OR ACCESSORIES (cont.) Optional Humidi- MiZer Adaptive Dehumidification System (cont.) once set up, the VFD will automatically adjust the speed between the cooling stage operations. The WeatherMaster 48HC04- 14 rooftop coupled with the Humidi- MiZer system is capable of operating in normal design cooling mode, subcooling mode, and hot gas reheat mode. Normal design cooling mode is when the unit will operate under its normal sequence of operation by cycling compressors to maintain comfort conditions. *Data based on .10 ($/kWh) in an office application utilizing Carrier’s...

FACTORY OPTIONS AND/OR ACCESSORIES (cont.) Optional Stainless Steel Heat Exchanger The stainless steel heat exchanger option provides the tubular heat exchanger be made out of a minimum 20 gauge type 409 stainless steel for applications where the mixed air to the heat exchanger is expected to drop below 45_F (7_C). Stainless steel may be specified on applications where the presence of airborne contaminants require its use (applications such as paper mills) or in area with very high outdoor humidity that may result in severe condensation in the heat exchanger during cooling operation. Flue...

Table 2 – AHRI COOLING RATING TABLE 1- STAGE COOLING UNIT COOLING STAGES Table 3 – AHRI COOLING RATING TABLE 2- STAGE COOLING UNIT COOLING STAGES LEGEND --AHRI ASHRAE EER IEER SEER IEER WITH SINGLE SPEED INDOOR MOTOR 13.0 13.0 12.6 12.0 13.0 Not Applicable Air Conditioning, Heating and Refrigeration Institute Test Standard American Society of Heating, Refrigerating and Air Conditioning, Inc. Energy Efficiency Ratio Integrated Energy Efficiency Ratio Seasonal Energy Efficiency Ratio Use of the AHRI Certified TM Mark indicates a manufacturer’s participation in the program For verification of...

Table 4 – HEATING RATING TABLE - NATURAL GAS & PROPANE UNITS Single Phase Three Phase GAS HEAT LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH THERMAL EFFICIENCY (%) --- Not Applicable NOTES: Heat ratings are for natural gas heat exchangers operated at or below 2000 ft (610 m). For information on Propane or altitudes above 2000 ft (610 m), see the Application Data section of this book. Accessory Propane/High Altitude kits are also available. In the USA the input rating for altitudes...

Table 5 – HEATING RATING TABLE - LOW NOX1 UNIT GAS HEAT LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH LOW MED HIGH Single Phase Three Phase 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. Table 6 – SOUND PERFORMANCE TABLE UNIT COOLING STAGES LEGEND dB --- Decibel 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...