Bryant 581B Installation & Service Instructions Manual

IMPORTANT - 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
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 Airflow and Airflow 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, fire, electric shock, or
other occurrences which may injure you or damage your
property. Consult a qualified installer, service agency,
or the gas supplier for information or assistance. The
qualified 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 - DANGER, WARNING, and
CAUTION. These words are used with the safety-alert
installation, start-up
and service instructions
SINGLE PACKAGE ROOFTOP
GAS HEATING/ELECTRIC COOLING UNITS
Page
Cancels: II 581B-36-1
Fig. 1 - Typical Unit
symbol. Danger identifies 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 field-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 specified on unit rating plate.
2. The electrical supply provided by the utility must be suf-
ficient 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 flooring or on
class A, B, or C roof-covering materials.
581B
Sizes 036-072
3 to 6 Tons
II 581B-36-2
9/15/98