installation, start-up

581B

and service instructions

 

Sizes 036-072

SINGLE PACKAGE ROOFTOP

3 to 6 Tons

GAS HEATING/ELECTRIC COOLING UNITS

 

 

 

IMPORTANT Ð READ BEFORE INSTALLING

1.Read and become familiar with these installation in- structions before installing this unit (Fig. 1).

2.Be sure the installation conforms to all applicable local and national codes.

3.These instructions contain important information for the proper maintenance and repair of this equipment. Re- tain these instructions for future use.

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1,2

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

I. Locate the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

II. Unit Duct Connections . . . . . . . . . . . . . . . . . . . . . . 5

III. Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 5

IV. Field Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-27 I. Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . 17 II. Heating Section Start-Up and Adjustments . . . . 18 III. Cooling Section Start-Up and Adjustments . . . . 21 IV. Indoor Air¯ow and Air¯ow Adjustments . . . . . . . 22

CARE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . 28

I. Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-32

I. Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

II. Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

III. Condenser-Fan Adjustment . . . . . . . . . . . . . . . . . 29

IV. Economizer Adjustment . . . . . . . . . . . . . . . . . . . . 29

V. Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . 29

VI. Main Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

VII. Flue Gas Passageways . . . . . . . . . . . . . . . . . . . . . 30

VIII. Combustion-Air Blower . . . . . . . . . . . . . . . . . . . . . 30

IX. Limit Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

X. Burner Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

XI. Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . 32

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-36

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

SAFETY CONSIDERATIONS

WARNING: Improper installation, adjustment, alter- ation, service, maintenance, or use can cause carbon mon- oxide poisoning, explosion, ®re, electric shock, or other occurrences which may injure you or damage your property. Consult a quali®ed installer, service agency, or the gas supplier for information or assistance. The quali®ed installer or agency must use only factory- authorized kits or accessories when modifying this product.

Recognize safety information. This is the safety-alert sym- bol. ( ) When you see this symbol on the unit and in in- structions or manuals, be alert to the potential for personal injury.

Understand the signal words Ð DANGER, WARNING, and CAUTION. These words are used with the safety-alert

Cancels: II 581B-36-1

II 581B-36-2

 

9/15/98

Fig. 1 Ð Typical Unit

symbol. Danger identi®es the most serious hazards which will result in severe personal injury or death. Warning indicates a condition that could result in personal injury. Caution is used to identify unsafe practices which would result in minor personal injury or product and property damage.

WARNING: Disconnect gas piping from unit when leak testing at pressure greater than 0.5 psig. Pressures greater than 0.5 psig will cause gas valve damage re- sulting in hazardous condition. If gas valve is subject to pressure greater than 0.5 psig, it must be replaced before use. When pressure testing ®eld-supplied gas pip- ing at pressures of 0.5 psig or less, a unit connected to such piping must be isolated by manually closing the gas valve.

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

1.The power supply (volts, hertz, and phase) must corre- spond to that speci®ed on unit rating plate.

2.The electrical supply provided by the utility must be suf- ®cient to handle load imposed by this unit.

3.Refer to the Locate the Unit section on page 3 and Fig. 2 for locations of gas and electrical inlets, conden- sate drain, duct connections, and required clearances be- fore setting unit in place.

4.Locate the unit where the vent cap will be a minimum of 4 ft from openable windows or doors.

5.This installation must conform with local building codes, the NFGC (National Fuel Gas Code), ANSI (American National Standards Institute) Z223.1-1992, and NFPA (National Fire Protection Association) 54 TIA-54-92-1. In Canada, installation must conform with CAN/CGA (Canadian Gas Association) B149.1,[2]-M86. Refer to Pro- vincial and local plumbing or wastewater codes and other applicable local codes.

6.Approved for outdoor installation on wood ¯ooring or on class A, B, or C roof-covering materials.

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Bryant 581B installation instructions Important Ð Read Before Installing, Contents, Safety Considerations

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.