Form No. PDS580F-36-4

COMMERCIAL

SINGLE PACKAGE ROOFTOP UNITS

GAS HEATING/ELECTRIC COOLING UNITS

Standard efficiency units (580F072, 090, 120, 150 and
579F180-300) are available. Standard efficiency units
(580F036-060, 073, 091,103,121,151, and 180-300) that meet
ASHRAE 90.1-04 minimum energy efficiency requirements are
also available. High efficiency units (581C024-060, 581B036-
150 and 581A155-300) well exceed ASHRAE 90.1-04 energy
efficiency requirements and must comply with Energy Star high
efficiency requirements. Gas heating with electric cooling roof-
tops offer:
• Pre-painted galvanized steel cabinet for long life and quality
appearance
• Commercial strength base rails with built-in rigging capability
• Convertible design for vertical or horizontal supply/return
(024-151 field convertible, factory supplied vertical supply/
return and 210-300 discrete configuration only)
• Non-corrosive, sloped condensate drain pan, meets
ASHRAE 62 (IAQ)
• Two-inch return-air filters
• A wide assortment of factory-installed options available,
including high-static drives that provide additional perfor-
mance range
• Factory-installed optional gear driven EconoMi$er IV (vertical
return for sizes 024-151 only) for use with standard rooftop
unit controls (includes CO2 sensor control capability)
• Factory-installed optional gear driven EconoMi$er2 (vertical
return only) for use with third party DDC controls (includes
4 to 20 mA actuator for demand control ventilation)
• Perfect Humidity™ dehumidification package (581C036-060
and 581B036-150 only)
• Hot gas reheat dehumidification package (581A181-300 only)
Heat Options
• Exclusive integrated gas control board with diagnostics
• Alumagard™ heat exchanger coating
• Induced-draft fan for gas combustion
• Tubular, dimpled heat exchangers
• Natural gas• LP conversion kits• Low NOX (size 024-060 only)• Optional type 409 stainless steel heat exchangers.
FEATURES/BENEFITS
Every compact one-piece unit arrives fully assembled,
charged, tested, and ready to run.
GAS HEAT MODELS — All ignition components are contained
in the compact IGC (integrated gas controller) which is easily
accessible for servicing. The IGC control board, designed and
manufactured exclusively for Bryant rooftop units, provides
built-in diagnostic capability. An LED (light-emitting diode) sim-
plifies troubleshooting by providing visual fault notification and
required system status confirmation.
The IGC also contains an exclusive anti-cycle protection for
gas heat operation. After 4 continuous cycles on the unit high-
temperature limit switch, the gas heat operation is disabled,
and an error code is issued. This feature greatly improves reli-
ability of the rooftop unit.
The IGC also contains burner control logic for accurate and
dependable gas ignition. The LED is visible without removing
the unit control box access panel. This LED fault-notification
system reduces service person troubleshooting time and mini-
mizes service costs. The IGC also maximizes heating effi-
ciency by controlling evaporator-fan on and off delays.
Tubular, dimpled gas heat exchangers optimize heat transfer
for improved efficiency. The tubular design permits hot gases
to make multiple passes across the path of the supply air. The
dimpled design creates a turbulent gas flow to maximize heat-
ing efficiency.

580F, 579F, 581A/B/C

DuraPac andDuraPac Plus Series

Sizes 024-300

2 to 25 Tons
SIZES 024-073 SIZES 090-151 579F180-216
581A155,180
580F180,210
580F240
579F240-300 580F300
581A210-300
48-910df
a48-8207
50-1242f 50-1214df
a48-5997
48-831df