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

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.