Preferred Line® Puron Advance™ Single-Packaged Rooftop Units with Axion™ Technology
Preferred Line® Puron Advance™ Single-Packaged Rooftop Units with Axion™ Technology 551L
Electric Heat / Electric Cooling & Cooling Only with Axion™ Technology 3 to 25 Nominal Tons
Bryant’s Preferred Line™ rooftops (RTU) with Puron Advance™ (R-454B) and Axion™ Fan Technology, offer an environmentally sustainable solution for a brighter future. With a GWP of 466 and similar performance to R-410A, Puron Advance easily exceeds the EPA's new, stringent, <700 GWP refrigerant requirement. Our direct drive Axion™ indoor fan system uses a Vane Axial fan and electronically commutated motor. The benefit is clear: when compared to legacy belt drive systems, this Vane Axial design has 75% fewer moving parts, uses up to 40% less energy, and has no belts, blower bearings, or shaft. Our Preferred Line® 581L/551L 3 to 25 ton units are designed to be a direct replacement for many existing rooftops. That makes replacements fast and easy, eliminating the need for curb adapters or different utility connections.
Product Certifications: AHRI, UL
- SEER Rating :
- Up to 16.8
Product Features
Performance Features
- Puron 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 Axion™ Technology indoor fan system uses Vane Axial fan design & electronically commutated motor
- Two-stage cooling capacity control on all models
- New Unit Control Board with intuitive quick fan speed adjustment
- SEER2 up to 16.8, IEER up to 17.5
- Cooling operating range up to 125 °F (52°C) and down to 40°F (4°C) using winter start kit
- Innovative corrosive-resistant composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain
- Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection
- Units meet ASHRAE 90.1 energy efficiency levels.
Maintenance Features
- New unit control board facilitating simple safety circuit troubleshooting and simplified control box arrangement as well as easy intuitive fan speed adjustment
- Access panels with easy grip handles
- Innovative, easy starting, no-strip screw feature on unit access panels
- Tool-less filter access door
- Optional hinged access panels also available
- NEW Direct Drive – Axion™ Technology Indoor fan system uses Vane Axial fan design and electronically commutated motor with beltless design
- Two-inch disposable return air filters
Installation Features
- Same footprint as prior Bryant models for that original fit; reduces installation costs and time
- Field convertible from vertical to horizontal airflow configuration on units up to 15 tons
- Provisions for thru-the-bottom power entry capability as standard
- Single point gas, electric, and controls connections
- Full perimeter base rail with built-in rigging adapters and fork truck slots
Reliability Features
- A2L leak detection and dissipation system standard
- Scroll compressors with internal line-break overload protection
- 24-volt control circuit protected with resettable circuit breaker
- Permanently lubricated direct-drive ECM evaporator-fan motor
- Totally enclosed condenser motors with permanently lubricated bearings
- Low pressure and high-pressure switch protection
Standard Limited Warranty
- 5 years electric heaters
- 5 years parts only compressor
- One-year parts only on all other parts
- Additional extended warranty packages available
Product Options
Factory-Installed Options
- Temperature Sensing Economizer with relief
- Enthalpy Sensing Economizer with relief
- Perfect Humidity™ Adaptive Dehumidification System
- Stainless Steel Gas Heat Exchangers
- Return Air Smoke Detector
- Supply Air Smoke Detector
- CO2 Sensor
- Condensate Overflow Protection
- Multiple Static Fan Capabilities
- Phase Monitor/Protection
- Thru-The-Base Utility Connections
- Louvered Hail Guards
- Non-Fused Disconnect Switch
- 2” MERV-13 Filters
- Low Ambient Controls
- Hinged Access Panels
- Unpowered Convenience Outlet
- Powered Convenience Outlet
- Coated Coils:
- Pre-Coat
- E-Coat
- Copper/Copper
- Electrical Mechanical Controls
- Extended Warranty Protection Plans
Performance Features
- Puron 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 Axion™ Technology indoor fan system uses Vane Axial fan design & electronically commutated motor
- Two-stage cooling capacity control on all models
- New Unit Control Board with intuitive quick fan speed adjustment
- SEER2 up to 16.8, IEER up to 17.5
- Cooling operating range up to 125 °F (52°C) and down to 40°F (4°C) using winter start kit
- Innovative corrosive-resistant composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain
- Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection
- Units meet ASHRAE 90.1 energy efficiency levels.
Maintenance Features
- New unit control board facilitating simple safety circuit troubleshooting and simplified control box arrangement as well as easy intuitive fan speed adjustment
- Access panels with easy grip handles
- Innovative, easy starting, no-strip screw feature on unit access panels
- Tool-less filter access door
- Optional hinged access panels also available
- NEW Direct Drive – Axion™ Technology Indoor fan system uses Vane Axial fan design and electronically commutated motor with beltless design
- Two-inch disposable return air filters
Installation Features
- Same footprint as prior Bryant models for that original fit; reduces installation costs and time
- Field convertible from vertical to horizontal airflow configuration on units up to 15 tons
- Provisions for thru-the-bottom power entry capability as standard
- Single point gas, electric, and controls connections
- Full perimeter base rail with built-in rigging adapters and fork truck slots
Reliability Features
- A2L leak detection and dissipation system standard
- Scroll compressors with internal line-break overload protection
- 24-volt control circuit protected with resettable circuit breaker
- Permanently lubricated direct-drive ECM evaporator-fan motor
- Totally enclosed condenser motors with permanently lubricated bearings
- Low pressure and high-pressure switch protection
Standard Limited Warranty
- 5 years electric heaters
- 5 years parts only compressor
- One-year parts only on all other parts
- Additional extended warranty packages available
Factory-Installed Options
- Temperature Sensing Economizer with relief
- Enthalpy Sensing Economizer with relief
- Perfect Humidity™ Adaptive Dehumidification System
- Stainless Steel Gas Heat Exchangers
- Return Air Smoke Detector
- Supply Air Smoke Detector
- CO2 Sensor
- Condensate Overflow Protection
- Multiple Static Fan Capabilities
- Phase Monitor/Protection
- Thru-The-Base Utility Connections
- Louvered Hail Guards
- Non-Fused Disconnect Switch
- 2” MERV-13 Filters
- Low Ambient Controls
- Hinged Access Panels
- Unpowered Convenience Outlet
- Powered Convenience Outlet
- Coated Coils:
- Pre-Coat
- E-Coat
- Copper/Copper
- Electrical Mechanical Controls
- Extended Warranty Protection Plans
Documents
California residents please see Proposition 65
PHYSICAL DATA
Electric Heat/Electric Cooling & Cooling Only Models (551L)
| Nominal Cooling Ton Size | Cooling Stages | AHRI Efficiency (SEER2) IEER | Dimension (in) LxWxH | Electrical Heat Nominal kW Range | Approx. Unit Weight (lbs) |
|---|---|---|---|---|---|
| 3 | 2 | (16.8) | 74x47x33 | 4.0 to 16.0 | 490 |
| 4 | 2 | (16.8) | 74x47x33 | 4.0 to 21.0 | 510 |
| 5 | 2 | (16.8) | 74x47x41 | 6.0 to 24.0 | 555 |
| 6 | 2 | 17.7 | 88x59x41 | 6.0 to 25.0 | 714 |
| 7.5 | 2 | 17.7 | 88x59x49 | 10.4 to 42.4 | 830 |
| 8.5 | 2 | 17.5 | 88x59x49 | 10.4 to 42.4 | 830 |
| 10 | 2 | 17.7 | 88x59x49 | 15.0 to 50.0 | 971 |
| 12.5 | 2 | 16.7 | 116x63x57 | 15.0 to 50.0 | 1313 |
| 15 | 2 | 16.7 | 127x86x49 | 25.0 to 75.0 | 1644 |
| 17.5 | 2 | 16.5 | 141x86x49 | 25.0 to 75.0 | 1880 |
| 20 | 2 | 17.0 | 141x86x49 | 25.0 to 75.0 | 2203 |
| 25 | 2 | 15.2 | 157x86x57 | 25.0 to 75.0 | 2296 |
AHRI = Air-Conditioning, Heating and Refrigeration Institute
ASHRAE = American Society of Heating, Refrigerating and Air Conditioning, Inc.
IEER = Integrated Energy Efficiency Ratio
SEER2 = Seasonal Energy Efficiency Ratio 2
ASHRAE = American Society of Heating, Refrigerating and Air Conditioning, Inc.
IEER = Integrated Energy Efficiency Ratio
SEER2 = Seasonal Energy Efficiency Ratio 2
NOTES
- Rated and certified under ARI Standard 210/240 3-5 ton or 340/360 6+ ton
- Cooling Standard: 80°F (27°C) db, 67°F (19°C) wb indoor air temp and 95°F (35°C) db outdoor air temp.
- 551L units comply with ASHRAE 90.1 Energy Standard. Please review size specific data for compliance
- 551L units comply with US Energy Policy Act (2005). To evaluate code compliance requirements, refer to state and local codes or visit the following website: http://bcap-energy.org
