Specifications

2
SAFETY IS BUILT IN —
All 580F units have a flame rectifica-
tion sensor to quickly sense the burner flame and ignite burners
almost immediately. Fast shutdown is a certainty since the sen-
sor 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 con-
tinuous short cycles of the high-temperature limit switch, the
IGC board locks out the gas heat cycle to prevent any further
short cycles. The rollout switch also deenergizes the gas valve
in the event of a flame rollout.
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 B117 500-hour Salt Spray Test. All internal cabinet pan-
els are primed, permitting longer life and a more attractive
appearance for the entire unit.
In addition, all 580F units are designed with a single, continu-
ous top piece to eliminate any possible leaks. 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. (Two different curb sizes fit unit sizes 036-072 and
090-150, respectively.) The contractor can order and install the
roof curb early in the construction stage, before decisions on
size requirements are made.
All units feature roll-formed base rail design with forklift slots
and rigging holes for easier maneuvering. (Forklift slots are
found on 3 sides.) The 580F036-060 base units have operating
weights under 500 lb and durable packaging protects all units
during shipment and storage.
The units can be easily converted from a vertical to a horizontal
duct configuration by relocating the panels supplied with the
unit.
The non-corrosive sloped condensate pan permits either an
external horizontal side condensate drain (outside the roof
curb) or an internal vertical bottom drain (inside the roof curb).
Both options require an external, field-supplied P-trap.
The 580F units were designed with service technicians in mind.
The single-row condenser coils on the 580F036 and 090 units
simplify the cleaning process. The efficient in-shot burners and
all ignition components are contained in an easily removable,
compact assembly.
The 580F units also have a standard filter access panel, which
permits tool-less filter changes, even on units with horizontal
economizers.
SIMPLE ELECTRICAL CONNECTIONS —
Terminal boards,
located in the base unit control box, facilitate connections to
room thermostat, outdoor thermostat(s), and economizer. Ser-
vice panels are quickly removed, permitting easy servicing.
Thru-the-bottom utility connection capability allow power, con-
trol wiring, and gas to be routed through unit base pan, mini-
mizing roof penetrations. Gas, power, and control connections
are made on the same side of the unit to simplify installation.
In addition, color-coded wires permit easy tracing and
diagnostics.
PROVEN COMPRESSOR RELIABILITY —
Design tech-
niques feature computer-programmed balance between com-
pressor, condenser, and evaporator. Bryant-specified hermetic
compressors are equipped with compressor overcurrent and
overtemperature protection to ensure dependability.
All 580F units have a fixed orifice metering device which pre-
cisely controls refrigerant flow, preventing slugging and
flood-back, while maintaining optimum unit performance. High
and low (loss-of-charge) pressure switches, freezestat and
refrigerant filter driers are standard.
INTEGRATED ECONOMIZERS AND OUTDOOR AIR —
Optional economizers and manual outdoor-air dampers intro-
duce outdoor air which mixes with the conditioned air, improving
indoor-air quality and often reducing energy consumption.
During a first stage call for cooling, if the outdoor-air tempera-
ture is below the economizer control changeover set point, the
discharge-air sensor modulates the economizer outdoor-air
damper open to take advantage of free cooling provided by the
outside air. When second-stage cooling is called for, the com-
pressor is energized in addition to the economizer. If the
outdoor-air temperature is above the changeover set point, the
first stage of compression is activated and the economizer stays
at vent position. Durablade economizer operation is controlled
by a dry-bulb thermostat that senses outdoor-air temperature.
Accessory upgrade kits allow for either outdoor air enthalpy
changeover or for more precise differential enthalpy control.
The Durablade economizer (option or accessory) has a reliable
sliding plate damper which is easily adjusted for 100% outdoor
air, 100% return air, or any proportions of mixed air.
The 580F units can also utilize the factory or field-installed
EconoMi$er. The EconoMi$er is microprocessor controlled and
incorporates a parallel, opposed-blade gear driven damper sys-
tem. In addition, it has a spring return built into the damper actu-
ator to provide reliable close-on-power-loss. The EconoMi$er
comes equipped with up to 90% barometric relief capability for
high outdoor airflow applications. EconoMi$er operation is
controlled by a dry-bulb thermostat that senses outdoor air
temperature.
Accessory upgrade kits allow for either outdoor air enthalpy
changeover or for more precise differential enthalpy control.
In addition, the EconoMi$er two-stage power exhaust acces-
sory can be utilized to help maintain proper building pressure.
For units without economizer, year-round ventilation is
enhanced by a manual outdoor-air damper (ordered as an
accessory or an option). The damper can be preset to admit up
to 50% outdoor air.
INDOOR-AIR QUALITY BEGINS WITH BRYANT ROOF-
TOPS —
Sloped condensate pans minimize biological growth in
rooftop units in accordance with ASHRAE (American Society of
Heating, Refrigeration, and Air Conditioning Engineers) Stand-
ard 62. Two-inch filters with optional dirty filter indicator switch
provide for greater particle reduction in the return air. The face-
split evaporator coils (090-150) improve the dehumidification
capability of standard units, maximize building humidity control.
Optional proportional reacting CO
2
sensor is available to work
with the EconoMi$er to aid IAQ benefits.
TABLE OF CONTENTS
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2
Model Number Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . 3
ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 12,13
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 14,15
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Performance Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-50
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51-54
Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Typical Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . 58,59
Guide Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60-62