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Factory options and accessories, Factory options and/or accessories – Bryant PREFERRED 581J User Manual

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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

2

sensors, economizers can

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

2

Sensor

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

2

sensor detects their presence through increasing

CO

2

levels, and opens the economizer appropriately.

When the occupants leave, the CO

2

levels decrease, and

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.

Power Exhaust with Barometric Relief

Superior internal building pressure control. This

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.

581J