SINGLE-PACKAGED
GAS HEATING/ELECTRIC
COOLING UNITS
Model 574B
Sizes 024-060
2 to 5 Nominal Tons
Low NOx Models Available
Form No. PDS 574B.24.1
Single-Packaged Rooftop Products with Energy-Saving Fea-
tures and Puron® refrigerant.
• Direct Spark Ignition
• Low Sound Levels
• Up to 81% AFUE
• 13 SEER
• Variable Speed Blower Standard
• Factory Installed TXV
FEATURES/BENEFITS
One-piece heating and cooling units with low sound levels, easy
installation, low maintenance, and dependable performance.
Puron® Environmentally Sound Refrigerant
is Bryant’s
unique refrigerant designed to help protect the environment.
Puron is an HFC refrigerant which does not contain chlorine that
can harm the ozone layer. The most important advantage of
Puron refrigerant is that it has not been banned in future air con-
ditioning systems as the traditional refrigerant R-22 has been.
Puron refrigerant is in service in thousands of systems proving
highly reliable, environmentally sound performance.
Perfect Heat, Perfect Humidity™ featuring Variable Speed
Blower motors
provides better comfort and energy efficiency.
You can expect up to 30 times better dehumidification; economi-
cal constant fan for less than $50 a year, which provides improved
indoor air quality and more even temperatures from room to room;
and reduced indoor noise due to lower air velocity. In addition,
you’ll realize improved installation flexibility with 3 different airflow
choices for best overall comfort.
EASY INSTALLATION
—Factory-assembled package is a com-
pact, fully self-contained, combination gas heating/electric cool-
ing unit that is pre-wired, pre-piped, and pre-charged for
minimum installation expense.
These units are available in a variety of standard and optional
heating/cooling size combinations with voltage options to meet
residential and light commercial requirements. Units are light-
weight and install easily on a rooftop or at ground level. The high
tech composite unit base eliminates rust problems associated
with ground level applications.
CONVERTIBLE DUCT CONFIGURATION
—Unit is designed
for easy use in either downflow or horizontal applications. Each
unit is easily converted from horizontal to downflow.
EFFICIENT OPERATION
High-efficiency design
offers SEER (Seasonal Energy Effi-
ciency Ratios) of 13.0 and AFUE (Annual Fuel Utilization Effi-
ciency) ratings as high as 81%.
Energy-saving, direct spark ignition
saves gas by operating
only when the room thermostat calls for heating. Standard units
are furnished with natural gas controls. A low-cost field-installed
kit for propane conversion is available for all units.
574B units with an “N” in the thirteenth position of model #
are dedicated Low NOx units
designed for California installa-
tions. These models meet the California maximum oxides of ni-
trogen (NOx) emissions requirement of 40 nanograms/joule or
less as shipped from the factory and MUST be installed in Cali-
fornia Air Quality Management Districts where a Low NOx rule
exists.
DURABLE, DEPENDABLE COMPONENTS
Compressors
are designed for high efficiency. Each compres-
sor is hermetically sealed against contamination to help promote
longer life and dependable operation. Each compressor also has
vibration isolation to provide quieter operation. All compressors
have internal high pressure and overcurrent protection.
Monoport inshot burners
produce precise air-to-gas mixture,
which provides for clean and efficient combustion. The large
monoport on the inshot (or injection type) burners seldom, if
ever, requires cleaning. All gas furnace components are acces-
sible in one compartment.
Turbo-tubular™ heat exchangers
are constructed of alumi-
nized steel for corrosion resistance and optimum heat transfer
for improved efficiency. The tubular design permits hot gases to
make multiple passes across the path of the supply air.
In addition, dimples located on the heat exchanger walls force
the hot gases to stay in close contact with the walls, improving
heat transfer.
Direct-drive variable speed (ECM) blower motor
is standard
on all 574B models.
Direct-drive, PSC condenser-fan motors
are designed to help
reduce energy consumption and provide for cooling operation
down to 55°F outdoor temperature. Motormaster® II low ambient
kit is available as a field-installed accessory.
UNIT 574B
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