Bryant LEGACY 558J User Manual

558J
SINGLE PACKAGE ROOFTOP COOLING UNIT
3 TO 6 NOMINAL TONS
Product Data
This product has been designed and manufactured to
meet Energy Star® criteria for energy efficiency.
However, proper refrigerant charge and proper air flow
are critical to achieve rated capacity and efficiency.
Installation of this product should follow all
manufacturer’s refrigerant charging and air flow
instructions. Failu re to con firm proper charge and
air flow may reduce energy efficiency and shorten
equipment li f e.
the environmentally sound refrigerant

Bryant LEGACY 558J Specifications

General

SEER	Up to 16
Refrigerant	R-410A
ENERGY STAR® certified	No
SEER Rating	Up to 16
Voltage	208/230V
Phase	1
Dimensions (Outdoor Unit)	Varies by model
Cooling Capacity	1.5 to 5 tons

Summary

Features and Benefits

Model Number Nomenclature

Application Data

Min Operating Ambient Temp (Cooling)

Rooftop Sizing Considerations

Low Ambient Applications

Selection Procedure

Determine Cooling and Heating Loads

Calculate cooling and heating loads based on given parameters.

Initial Cooling Tons Guess

Estimate cooling tonnage based on total heat capacity.

Find Rooftop Capacities (THC & SHC)

Find Total Heat Capacity (THC) and Sensible Heat Capacity (SHC) from tables.

Calculate Building Latent Heat Load

Calculate the latent heat load from THC and SHC.

Calculate RTU Latent Heat Capacity

Calculate the unit's latent heat capacity.

Compare RTU Capacities to Loads

Compare calculated unit capacities with building loads.

Select Factory Options (FIOP)

Choose factory-installed options based on requirements and codes.

Calculate Total Static Pressure

Determine total static pressure considering accessories.

Find Indoor Fan RPM & BHP

Find fan RPM and Brake Horsepower (BHP) from fan performance tables.

Convert BHP to Fan Motor Heat

Determine Electrical Requirements

Determine MCA and MOCP.

Electrical Information

Sequence of Operation

Electro-mechanical Units - No Economizer Cooling

Unit operation during cooling calls, compressor and fan engagement.

Electro-mechanical Units - No Economizer Heating

Unit operation for electric heating stages, IFC and heat engagement.

Electro-mechanical Units - With Economizer Cooling

Cooling with economizer, mixed-air temp control, damper modulation.

Electro-mechanical Units - With Economizer Heating

Electric and Electronic Control System for HVAC

General Control System Requirements

Safety Features

Self-Contained Air Conditioners

General Unit Description

Quality Assurance

Operating Characteristics

Electrical Requirements

Unit Cabinet Specifications

Refrigerant Components

Evaporator Fan and Motor Specs

Condenser Fans and Motors Specs

Unit-Mounted, Non-Fused Disconnect Switch

Convenience Outlet