CRBTMPWR003A01 and CRBTMPWR004A01 Small Rooftop Units Thru-the-Bottom Service Connection Gas Heating Electric Cooling 3 to 12-1/2 Tons
WeatherExpert® 48WE Single-Packaged Rooftop Unit
Type
Gas Heat/Electric CoolingRefrigerant
R-454BCapacity Range
6 - 15 TonsEfficiency (SEER/IEER)
20.5Puron Advance (R-454B) refrigerant meets and exceeds EPA’s new Low GWP requirements
New – UL 60335-2-40 Certified A2L leak detection and dissipation system factory installed standard
Direct Drive EcoBlue™ Technology indoor fan system uses Vane Axial fan design & electronically commutated motor
Three-stage cooling capacity control on all models
Large face area hot gas reheat (HGRH) coil with modulating control valve for dehumidification operation
Modulating heat operation with standard 5:1 turndown (natural gas) control
IEER’s up to 20.5, EER’s up to 13.1
Gas efficiencies up to 81%
Cooling operating range up to 125 °F (52°C) and down to 40°F (4°C)
Innovative corrosive-resistant composite condensate pan in accordance with ASHRAE 62 Standard
Exclusive IGC solid-state control for on-board diagnostics with LED error code designation and burner control logic
Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection
Carrier SmartVu controls with 7” touchscreen display
Single zone, multi-zone, 100% outdoor air, or multistage heat/cool thermostat operating modes
Units meet ASHRAE 90.1 energy efficiency levels.
Condensate overflow switch
Hinged access panels with easy grip handles
Innovative, easy starting, no-strip screw feature on unit access panels
Two-inch disposable return air filters
Tool-less filter access door
New Vane Axial evaporator-fan system has no fan belts, pullies, blower shaft and blower bearings with slide out design
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
A2L leak detection and dissipation system standard
SmartVu™ controls with system monitoring and alarming
Proven tandem scroll compressor design with internal line-overload protection
24-volt control circuit protected with resettable circuit breaker
Direct drive supply fan
Totally enclosed condenser motors with permanently lubricated bearings
Low and high refrigerant pressure sensors
Solid-state electronic direct spark ignition system
Flame roll-out safety protector
Liquid line filter drier
Cooling and dehumidification lockouts based on outdoor air or entering coil air temperatures
15-year heat exchanger – stainless steel
5-year compressor parts
3-year parts SmartVu™ Controller
1-year parts
Additional extended warranty packages available
High turndown (10:1) natural gas heat
Return air CO2 sensor
Return and/or supply air smoke detector
High static supply fan motor
Variable speed supply fan control based on duct static or space static pressure
Corrosion resistant options for evaporator and condenser coils
Ultra-low leak Integrated economizer system
Powered or un-powered convenience outlet
4” filter track with 4” MERV 13 filters
Non fused disconnect switch or HACR circuit breaker
Double wall construction
Knockdown roof curbs
Field installed economizers
Space temperature, humidity, and CO2 sensors
Thermostats
| Nominal Cooling Ton Size | Cooling Stages | AHRI Efficiency (IEER) | Dimensions (in) LxWxH | Gas Heating Input Range (Btuh) | Approx. Unit Weight (lbs) |
| 6 | 3 | 20.5 | 88x59x49 | 14-140 | 1059 |
| 7.5 | 3 | 20.5 | 116x63x57 | 16-160 | 1516 |
| 10 | 3 | 20.2 | 116x63x57 | 24-200 | 1596 |
| 15 | 3 | 18.8 | 141x86x57 | 30-300 | 2120 |
AHRI = Air-Conditioning, Heating & Refrigeration Institute
ASHRAE = American Society of Heating, Refrigerating and Air Conditioning, Inc.
IEER = Integrated Energy Efficiency Ratio
NOTES
Accessory and Kit Data
CRBTMPWR003A01 and CRBTMPWR004A01 Small Rooftop Units Thru-the-Bottom Service Connection Gas Heating Electric Cooling 3 to 12-1/2 Tons
Brochure
K-12 Vertical - Carrier Rooftop Systems
Controls
SmartVu™ Controls Version 2.X for Light Commercial Rooftop Gas Heat/Electric Cooling and Electric Heat/Electric Cooling Units with PIC 6.1 Hardware, Integration Guide
48WE*H17 WeatherExpert® Gas Heat/Electric Cooling Packaged High Outdoor Air System with Puron Advance™ (R-454B) Refrigerant
Installation
48WE*H07-12 WeatherExpert® Gas Heat/Electric Cooling Packaged High Outdoor Air System with Puron Advance™ (R-454B) Refrigerant