Bryant 581A operation manual Contents, Safety Considerations, Installation Provide Unit Support

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installation, start-up and service instructions

581A DuraPac Plus Series

SINGLE PACKAGE ROOFTOP

ELEC TRIC COOLING/GAS HEATING UNITS

Sizes 210-300 18 to 25 Tons

Cancels: II 581A-210-1

II 581A-210-2

 

10/1/05

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-16 I. Step 1 — Provide Unit Support. . . . . . . . . . . . . . . . . 1 II. Step 2 — Remove Shipping Rails. . . . . . . . . . . . . . . 2 III. Step 3 — Rig and Place Unit. . . . . . . . . . . . . . . . . . . 2 IV. Step 4 — Field Fabricate Ductwork . . . . . . . . . . . . . 9 V. Step 5 — Make Unit Duct Connections . . . . . . . . . . 9 VI. Step 6 — Install Flue Hood and Inlet Hood . . . . . . 10 VII. Step 7 — Trap Condensate Drain . . . . . . . . . . . . . . 10 VIII. Step 8 — Install Gas Piping . . . . . . . . . . . . . . . . . . 10 IX. Step 9 — Make Electrical Connections . . . . . . . . . 11

X. Step 10 — Install Outdoor-Air Hood. . . . . . . . . . . . 12

XI. Step 11 — Position Optional Power

Exhaust or Barometric Relief Damper Hood . . . 16 XII. Step 12 — Non-Fused Disconnect . . . . . . . . . . . . . 16 XIII. Step 13 — Install All Accessories . . . . . . . . . . . . . 16

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-36

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36-46

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . .47-51

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical compo- nents. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform the basic maintenance functions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.

WARNING: Before performing service or mainte- nance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury.

WARNING:

1.Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life. Refer to the User’s Information Manual provided with this unit for more details.

2.Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

What to do if you smell gas:

1.DO NOT try to light any appliance.

2.DO NOT touch any electrical switch, or use any phone in your building.

3.IMMEDIATELY call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

4.If you cannot reach your gas supplier, call the fire department.

WARNING: Disconnect gas piping from unit when pressure testing at pressure greater than 0.5 psig. Pressures greater than 0.5 psig will cause gas valve damage resulting in hazardous condition. If gas valve is subjected to pressure greater than 0.5 psig, it must be replaced before use. When pressure testing field- supplied gas piping at pressures of 0.5 psig or less, a unit connected to such piping must be isolated by clos- ing the manual gas valve(s).

IMPORTANT: Units have high ambient temperature operat- ing limits. If limits are exceeded, the units will automatically lock the compressor out of operation. Manual reset will be required to restart the compressor.

INSTALLATION

I. STEP 1 — PROVIDE UNIT SUPPORT

A. Roof Curb

Assemble or install accessory roof curb in accordance with instructions shipped with this accessory. See Fig. 1. Install insulation, cant strips, roofing, and counter flashing as shown. Ductwork can be installed to roof curb before unit is set in place. Ductwork must be attached to curb and not to the unit. Curb must be level. This is necessary to permit unit drain to function properly. Unit leveling tolerance is ±1/16 in. per linear ft in any direction. Refer to Accessory Roof Curb Installation Instructions for additional information as required. When accessory roof curb is used, unit may be installed on class A, B, or C roof covering material. Bryant roof curb accessories are for flat roofs or slab mounting.

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Contents Safety Considerations ContentsInstallation Provide Unit Support III. RIG and Place Unit II. Remove Shipping RailsRoof Curb Details Shipping Rail Removal Base Unit Dimensions Compressor Physical DataFan Motor and Drive Data Vertical Supply/Return Fan Motor and Drive Data Horizontal Supply/Return IV. Field Fabricate Ductwork Vertical ConfigurationMake Unit Duct Connections Horizontal ApplicationsVIII. Install GAS Piping VI. Install Flue Hood and Inlet HoodVII. Trap Condensate Drain Field Control Wiring Field Power SupplyIX. Make Electrical Connections Manual Damper Assembly Install OUTDOOR-AIR HoodFLA MCA Mocp Electrical Data Units Without Convenience OutletElectrical Data Units With Optional Convenience Outlet Outdoor-Air Hood Details XII. NON-FUSED Disconnect XIII. Install ALL AccessoriesVI. Internal Wiring III. Refrigerant Service PortsPRE-START-UP START-UPIX. RETURN-AIR Filters VIII. Condenser Fans and MotorsOUTDOOR-AIR Inlet Screens XI. GAS HeatFan Performance 581A210 Medium Heat Vertical Discharge Units Fan Performance 581A240 Low Heat Vertical Discharge Units Fan Performance 581A210 High Heat Vertical Discharge UnitsFan Performance 581A240 High Heat Vertical Discharge Units Fan Performance 581A240 Medium Heat Vertical Discharge UnitsFan Performance 581A300 Medium Heat Vertical Discharge Units Fan Performance 581A300 Low Heat Vertical Discharge UnitsGeneral Notes for Tables Fan Performance 581A300 High Heat Vertical Discharge UnitsFan Performance 581A210 Low Heat Horizontal Discharge Units Fan Performance 581A240 Low Heat Horizontal Discharge Units Fan Performance 581A210 High Heat Horizontal Discharge UnitsFan Performance 581A240 High Heat Horizontal Discharge Units Fan Performance 581A300 Low Heat Horizontal Discharge Units Fan Performance 581A300 High Heat Horizontal Discharge Units Power Exhaust Fan PerformanceOperation Air Quantity Limits Evaporator Fan Motor SpecificationsFan Rpm at Motor Pulley Settings Accessory/FIOP Static Pressure in. wgEconoMi$er IV Controller Wiring and Operational Modes XII. Optional ECONOMI$EREconoMi$er IV Component Locations Exploded View Supply-Air Temperature Sensor LocationEconoMi$er IV Wiring Enthalpy Changeover Set Points Page XII. Operating Sequence CO2 Sensor Standard SettingsCooling, Units Without Economizer Coil Maintenance and Cleaning Recommendation Service CleaningHeating, Units Without Economizer Cooling, Units With EconoMi$erFilters Condensate DrainOutdoor-Air Inlet Screens Main BurnerII. Lubrication III. Evaporator FAN Service and ReplacementBelt Tension Adjustment IV. Evaporator FAN Performance AdjustmentBelt Tension Adjustment VI. CONDENSER-FAN Adjustment FigIX. GAS Valve Adjustment VII. Power FailureVIII. Refrigerant Charge XI. Filter Drier Main BurnersXII. Protective Devices XIII. Relief Devices XV. Replacement PartsXIV. Control Circuit Low Voltage Control Schematic Low Voltage Control Schematic Power Schematic Component Arrangement Cooling Service Analysis Troubleshooting Unit TroubleshootingProblem Cause Remedy Heating Service AnalysisIGC Control Heating and Cooling II. ECONOMI$ER IV Troubleshooting EconoMi$er IV Input/Output Logic EconoMi$er IV Troubleshooting CompletionCopyright 2005 Bryant Heating & Cooling Systems Catalog no Page Page Page Temperatures START-UP ChecklistElectrical Pressures
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581A specifications

The Bryant 581A is a pivotal model in the realm of heating, ventilation, and air conditioning (HVAC) systems, known for its robust performance and energy efficiency. As part of the Bryant product lineup, the 581A offers a blend of innovative technologies combined with reliable engineering, making it a suitable choice for both residential and light commercial applications.

One of the standout features of the Bryant 581A is its outstanding energy efficiency. With a Seasonal Energy Efficiency Ratio (SEER) rating of up to 16, this model meets Energy Star qualifications, ensuring that homeowners can enjoy lower utility bills while helping to reduce their environmental footprint. The efficiency is further enhanced by the unit’s environmentally friendly refrigerant, which not only improves performance but also aligns with modern sustainability standards.

Another key characteristic of the Bryant 581A is its durable construction. Designed to withstand various weather conditions, the unit features a robust cabinet that protects internal components. This durability not only prolongs the lifespan of the system but also minimizes the need for frequent maintenance or repairs. The coil design is optimized for heat transfer efficiency, enhancing the unit's overall performance in both cooling and heating modes.

In terms of technology, the Bryant 581A incorporates advanced control systems that enable precise temperature regulation. The multi-stage cooling capabilities ensure that the system can adapt to varying temperature demands, providing comfort in all seasons. Additionally, the model is compatible with smart thermostats, allowing homeowners to control their HVAC system remotely via smartphone or other connected devices.

Noise reduction is another aspect where the Bryant 581A excels. Equipped with a variable-speed compressor and sound-dampening features, this model operates quietly, minimizing disruption in residential or office environments. This focus on acoustic comfort makes it an ideal choice for those who value a peaceful living or working space.

Overall, the Bryant 581A represents an excellent balance of efficiency, durability, and modern technology. With features aimed at enhancing user comfort and reducing operational costs, it stands out as a reliable solution in the competitive HVAC market. Whether for new installations or replacements, the Bryant 581A is a testament to the brand’s commitment to quality and innovation in home climate control.
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