Bryant 581B manual Options and Accessories, LOW Ambient Controls, Time Guard II Control

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OPTIONS AND ACCESSORIES

ITEM

OPTION*

ACCESSORY†

Perfect Humidity™ Dehumidification Package

X

 

Integrated Economizer — Durablade

X

X

Integrated Economizer — EconoMi$er (gear driven)

X

X

EconoMi$er with Power Exhaust (Vertical Only)

 

X

Power Exhaust for EconoMi$er

 

X

High-Static Motor (except 150)

X

 

Hinged Access Panels

X

 

25% Manual Outdoor-Air Damper

X

X

50% Manual Outdoor-Air Damper

 

X

Convenience Outlet

X

 

Unit Mounted Disconnect

X

 

Two-Position Damper (25% Open)

 

X

Two-Position Damper (100% Open)

 

X

Roof Curb (14 in.)

 

X

Roof Curb (24 in.)

 

X

Thru-the-Bottom Service Connections

 

X

Thermostat and Subbase

 

X

Light Commercial Thermostat

 

X

Light Commercial Thermidistat

 

X

Time Guard® II Control Circuit (3-Phase Units Only)

 

X

Motormaster® Low Ambient Control

 

X

Motormaster II Low Ambient Control

 

X

Motormaster IV Low Ambient Control

 

X

Accusensor™ II Enthalpy Control

 

X

Accusensor III Differential Enthalpy Sensor

 

X

Liquid Propane Conversion Kit

 

X

Flue Discharge Deflector

 

X

Flue-Hood Protector Assembly

 

X

Coil Guard Grille

 

X

Condenser Coil Hail Guard

 

X

Fan/Filter Status Switch

 

X

Corrosion Resistant Coils

X

 

*Indicates a factory-installed option.

 

 

†Indicates a field-installed accessory.

 

 

LOW AMBIENT CONTROLS

The 581B036-150 standard units are designed to operate in cooling at outdoor temperatures down to 25 F. With accessory Motormaster control (condenser-fan speed modulation), or Motor- master II control (condenser-fan cycling), units can operate at outdoor temperatures down to

–20 F. The head pressure controls, which mount in the condenser section, control the condenser-fan motor to maintain correct condensing temperature.

MOTORMASTER I

MOTORMASTER II

TIME GUARD II CONTROL

Time Guard II Control automatically prevents compressor from restarting for at least 5 minutes after a shutdown. Field-installed accessory prevents short cycling of com- pressor if thermostat is rapidly changed. Time Guard II device mounts in the control compartment of unit. The Time Guard II device is not required when a programma- ble thermostat is applied.

LIQUID PROPANE CONVERSION KIT

BURNER SPUDS (ORIFICES)

Liquid propane conversion kit allows the unit to utilize a liquid propane fuel supply in areas where natural gas is not available. (Kit shown is for sizes 036-072.)

6

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Contents Unit 581B036-072 FEATURES/BENEFITSEasy Maintenance and Installation Unit 581B090-150FEATURES/BENEFITS Table of Contents Model Number Nomenclature ServiceabilityCompressors and Safety Switches are Easily Accessible for Indoor AIR Quality IAQARI* Capacities Heating Capacities and EfficienciesTime Guard II Control Options and AccessoriesLOW Ambient Controls Liquid Propane Conversion KITOptions and Accessories Bryant Commercial Programmable Thermostat Hail Guard Accusensor II Enthalpy ControlCoil Guard Grille Bryant Light Commercial ThermidistatPhysical Data Hi-Static090N††† Physical Data060N††† 120N†††090 102 120 150 Nominal Capacity tons LOSS-OF-CHARGE LOW-PRESSURE Base Unit Dimensions 581B036-072Base Unit Dimensions 581B090-150Accessory Dimensions 581B036-072 Control Accessory Dimensions 581B090-150Connector ALT Drain PKG. Accy GAS CRRFCURB003A00Selection Procedure With 581B048 Example II Select Unit Based on Required Cooling CapacityDetermine NET Cooling Capacity Performance Data Cooling CapacitiesPerformance Data Cooling Capacities581B090 71/2 Tons 581B120 10 Tons Temp F Cooling CAPACITIES, Units with Perfect Humidity Option Cooling CAPACITIES, Units with Perfect Humidity Option 2250/0.10 3000/0.11 3750/0.14 Condenser 134.3 FAN Performance Vertical Discharge Units 581B036 3 Tons Standard Motor Airflow581B036 3 Tons HIGH-STATIC Motor Airflow FAN Performance Vertical Discharge Units 581B048 4 Tons Standard Motor Airflow581B048 4 Tons HIGH-STATIC Motor Airflow 581B060 5 Tons Standard Motor SINGLE-PHASE Units Airflow 581B060 5 Tons Standard Motor THREE-PHASE Units Airflow581B060 5 Tons HIGH-STATIC Motor 581B072 6 Tons Standard Motor Airflow 581B072 6 Tons HIGH-STATIC Motor581B090 71/2 Tons Standard Motor 581B090 71/2 Tons HIGH-STATIC Motor Airflow581B102 81/2 Tons HIGH-STATIC Motor Airflow 581B120 10 Tons Standard and HIGH-STATIC Motor Airflow FAN Performance Horizontal Discharge Units FAN Performance Horizontal Discharge Units 581B060 5 Tons Standard Motor 3-PHASE Units Airflow 581B060 5 Tons HIGH-STATIC Motor Airflow2000 1022 1121 1188 1264 Bhp Rpm 1800 885 942 10471900 982 1084 1160 1223 2100 1063 1140 1196 1272581B090 71/2 Tons HIGH-STATIC Motor Airflow 2700 573 648 711 770 798 827 Bhp Rpm 2550 627 692 754 783 8122600 557 634 698 759 787 816 2800 588 662 723 782 809 8373300 537 692 751 828 3100 500 669 731 8083200 519 680 741 818 3400 561 704 761Outdoor Sound Power Total Unit EVAPORATOR-FAN Motor EfficiencyFiop Perfect Humidity Dehumidification 581B FAN RPM AT Motor Pulley Setting with Standard Motor 581B FAN RPM AT Motor Pulley Setting with HIGH-STATIC MotorEVAPORATOR-FAN Motor Data Standard Motor EVAPORATOR-FAN Motor Data HIGH-STATIC Motors Operating WattsEconoMi$er Barometric Relief Damper Characteristics EconoMi$er Outdoor-Air LeakageEconoMi$er Return-Air Pressure Drop Altitude Compensation Altitude Derating Factor581B036-150 Supply Electrical DataOFM FAN MotorElectrical Data RLA LRA FLA MCA MOCP†Nominal Voltage Combustion Power Minimum Unit Compressor RLA LRA Maximum Operating OUTDOOR-AIR Temperature Application DataApplications Application Data Perfect Humidity Dehumidification Option Pressure Enthalpy Curve Psychrometric Chart 581B072 Shown Typical Piping and Wiring Vertical DischargeHorizontal Discharge Typical Wiring Schematic Typical Wiring Schematic 581B090-150 Typical Wiring Schematic OFCTran Controls Operating Sequence for 581B036-072 UnitsOperating Sequence for 581B090-150 Units Controls Operating Sequence for 581B036-150 Size UnitsGuide Specifications Part 1 GeneralPart 2 Products Guide Specifications Light Commercial Thermidistat Page Specifications Subject to Change Without Notice
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581B specifications

The Bryant 581B is an innovative and highly efficient gas furnace that stands out in the HVAC market for its remarkable performance, reliability, and advanced features. Designed to provide optimal heating comfort, the Bryant 581B is perfect for homeowners seeking both quality and energy efficiency.

One of the main features of the Bryant 581B is its impressive Annual Fuel Utilization Efficiency (AFUE) rating. With an AFUE rating of up to 80%, this gas furnace maximizes energy usage, ensuring that a significant portion of the fuel is converted into heat for your home. This efficiency not only translates into lower energy bills but also reduces the carbon footprint, making it an environmentally friendly choice.

The furnace is equipped with a multi-speed blower motor that enhances comfort by providing consistent airflow throughout the home. This technology adjusts to different heating demands, ensuring that every room reaches the desired temperature without the discomfort of hot or cold spots. The quiet operation of the blower motor also adds to the overall comfort, creating a peaceful home environment.

Another notable characteristic of the Bryant 581B is its durable construction. It features a robust heat exchanger built from high-quality materials, designed to withstand the rigors of daily use. The compact design of the furnace allows it to fit seamlessly into various spaces, making it an ideal choice for both new installations and replacement projects.

The Bryant 581B also comes with advanced safety features, including a self-diagnostic control board that monitors the system's performance. This feature allows for easy troubleshooting and maintenance, prolonging the life of the furnace. Additionally, the furnace is equipped with an induced draft blower that enhances venting efficiency and safety by ensuring that combustion gases are safely expelled from the home.

For homeowners looking for enhanced control, the Bryant 581B is compatible with a range of smart thermostats, providing the ability to monitor and adjust heating settings remotely. This integration with smart technology ensures that homeowners can maintain their desired comfort levels while maximizing efficiency.

In conclusion, the Bryant 581B gas furnace is a top-tier option that combines efficiency, durability, and modern technology. With its high AFUE rating, multi-speed blower, and advanced safety features, it promises to deliver unparalleled comfort and peace of mind for years to come. Whether for a new build or an upgrade, the Bryant 581B is an investment that pays off in both comfort and savings.