Bryant 581A/B - Manual (Page 2)

2
TABLE OF CONTENTS
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . 5-7
ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 16-19
580F036-151
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-25
Base Unit Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-29
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,31
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-74
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75-78
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . 79-81
Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
581B036-150
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83-86
Base Unit Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 87,88
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 89,90
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92-132
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133,134
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . 135-137
Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Guide Specifications (036-151 Size Units) . . . . . . . . 139-143
579F180-300
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144,145
Base Unit Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . 146,147
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 148-150
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152-165
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .166
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . 167-170
Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .171
580F180-300
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172,173
Base Unit Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . 174-176
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 177-180
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182-191
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . 193-195
Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .196
581A155-300
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197-200
Base Unit Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . 201,202
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 203-206
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208-243
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244-246
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . 247,248
Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .249
Guide Specifications (155-300 Size Units) . . . . . . . . 250-258
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259-262
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263-266
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .267
FEATURES/BENEFITS (cont)
The efficient in-shot burners and all ignition components are
contained in an easily removable, compact assembly.
The California Air Quality Management Districts NO
x
require-
ment of 40 nanograms/joule or less is met on 036-060 size Low
NO
x
models.
The extra thick Alumagard™ heat exchanger coating provides
corrosion resistance and ensures long life (optional stainless
steel heat exchangers are available).
The unsightly appearance of flue stacks is eliminated and the
effects of wind on heating operations are diminished by the
induced draft combustion system. The inducer fan draws hot
combustion gas through the heat exchanger at the optimum
rate for the most effective heat transfer. The heat exchanger
operates under negative pressure, preventing flue gas leakage
into the indoor supply air.
During the heating mode, the evaporator-fan relay automatically
starts the evaporator fan after the heat exchanger warms up to
a suitable temperature. The 30-second fan delay prevents cold
air from entering the supply duct system when the conditioned
space is calling for heat to maximize efficiency.
The direct-spark ignition system saves operating expense when
compared to pilot ignition systems. No crossover tube is
required, therefore no sooting or pilot fouling problems can
occur.
All standard units are designed for natural gas, but an acces-
sory LP (liquid propane) conversion kit is available.
All units have a flame rectification sensor to quickly sense the
burner flame and ignite burners almost immediately. Fast shut-
down is a certainty since the sensor reacts quickly to any flame
outage or system failure. In the event of a shutdown, an error
code is issued at the IGC board.
Safety is also assured due to the heating safety controls which
will shut down the unit if there is a problem. If excessive temper-
atures develop, limit switches shut off the gas valve. After
4 continuous short cycles of the high-temperature limit switch,
the IGC board locks out the gas heat cycle to prevent any fur-
ther short cycles. This safety feature is provided exclusively on
Bryant rooftop units. The rollout switch also deenergizes the
gas valve in the event of a flame rollout.
QUIET, EFFICIENT OPERATION AND DEPENDABLE PER-
FORMANCE — Compressors have vibration isolators for quiet
operation. Efficient fan and motor design permits operation at
low sound levels.
Unit sizes 090-300 offer lower utility costs through part-load
operation using 2 or 3 stages of cooling.
Quiet and efficient operation is provided by belt-driven evapora-
tor fans (standard on all units over 5 tons). The belt-driven
evaporator-fan is equipped with variable-pitch pulleys which
allow adjustment within the rpm ranges of the factory-supplied
pulleys.
Increased operating efficiency is achieved through computer-
designed coils featuring staggered internally enhanced copper
tubes. Fins are ripple-edged for strength, lanced, and double
waved for higher heat transfer.
DURABLE, DEPENDABLE CONSTRUCTION — Designed for
durability in any climate, the weather-resistant cabinets are con-
structed of galvanized steel and bonderized, and all exterior
panels are coated with a prepainted baked enamel finish. The
paint finish is non-chalking, and is capable of withstanding
ASTM (American Society for Testing and Materials) B117
500-hour Salt Spray Test. All internal cabinet panels are primed,
permitting longer life and a more attractive appearance for the
entire unit.
In addition, all size 036-151 units are designed with a single,
continuous top piece to eliminate any possible leaks at seams
or gasketing. Totally enclosed condenser-fan motors and
permanently lubricated bearings provide additional unit
dependability.
EASY INSTALLATION AND CONVERSION
All Units are Shipped in the Vertical Duct Configuration for
fit-up to standard roof curbs. The contractor can order and
install the roof curb early in the construction stage, before deci-
sions on size requirements are made.
All units feature a base rail design with forklift slots and rigging
holes for easier maneuvering. Durable packaging protects all
units during shipment and storage.