Factory Options And/Or Accessories; Economizer; Power Exhaust With Barometric Relief; Time Guard Ii Control Circuit - Bryant PREFERRED 581J Product Data

FACTORY OPTIONS AND/OR ACCESSORIES

Economizer (dry- -bulb or enthalpy)
Economizers save money. They bring in fresh, outside air
for ventilation; and provide cool, outside air to cool your
building. This is the preferred method of low- - ambient
cooling. When coupled to CO
provide even more savings by coupling the ventilation air
to only that amount required.
Economizers are available, installed and tested by the
factory, with either enthalpy or dry- - bulb temperature
inputs. There are also models for electromechanical as
well as direct digital controllers. Additional sensors are
available as accessories to optimize the economizers.
Economizers include gravity controlled, barometric relief
equalizes building pressure and ambient air pressures.
This can be a cast effective solution to prevent building
pressurization.
CO Sensor
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Improves productivity and saves money by working with
the economizer to intake only the correct amount of
outside air for ventilation. As occupants fill your building,
the CO sensor detects their presence through increasing
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CO levels, and opens the economizer appropriately.
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When the occupants leave, the CO
the sensor appropriately closes the economizer. This
intelligent control of the ventilation air, called Demand
Control Ventilation (DCV) reduces the overall load on the
rooftop, saving money.
Smoke Detectors
Trust the experts. Smoke detectors make your application
safer and your job easier. Bryant smoke detectors
immediately shut down the rooftop unit when smoke is
detected. They are available, installed by the factory, for
supply air, return air, or both.
Louvered Hail Guards
Sleek, louvered panels protect the condenser coil from
hail damage, foreign objects, and incidental contact.
Convenience Outlet (powered or un- - powered)
Reduce service and/or installation costs by including a
convenience outlet in your specification. Bryant will
install this service feature at our factory. Provides a
convenient, 15 amp, 115v GFCI receptacle with "Wet in
Use" cover. The "powered" option allows the installer to
power the outlet from the line side of the disconnect or
load side as required by code. The "unpowered" option is
to be powered from a separate 115/120v power source.
Non- -fused Disconnect
This OSHA- - compliant, factory- - installed, safety switch
allows a service technician to locally secure power to the
rooftop.
sensors, economizers can
2
levels decrease, and
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Power Exhaust with Barometric Relief

Superior internal building
field- - installed accessory may eliminate the need for
costly, external pressure control fans.
RTU- -MP, Multi- -Protocol Controller
Connect the rooftop to an existing BAS without needing
complicated translators or adapter modules using the
RTU- - MP controller. This new controller speaks the 4
most common building automation system languages
(Bacnet, Modbus, N2, and Lonworks). Use this controller
when you have an existing BAS.

Time Guard II Control Circuit

This accessory protects your compressor by preventing
short- - cycling in the event of some other failure, prevents
the compressor from restarting for 30 seconds after
stopping. Not required with RTU- - MP or authorized
commercial thermostats.
Motorized 2- - Position Damper
The new Bryant 2- - position, motorized outdoor air damper
admits up to 100% outside air. Using reliable, gear- - driven
technology, the 2- - position damper opens to allow
ventilation air and closes when the rooftop stops, stopping
unwanted infiltration.
Manual OA Damper
Manual outdoor air dampers are an economical way to
bring in ventilation air. The dampers are available in 25%
and 50% versions.
Hinged Access Panels
Allows access to unit's major components with
specifically designed hinged access panels. Panels are:
filter, control box, fan motor and compressor.
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pressure control. This