Indoor Air Quality (Iaq); Model Number Nomenclature; Serviceability - Bryant COMMERCIAL SINGLE PACKAGE ROOFTOP GAS HEAT/ELECTRIC COOLING 581B User Manual

INDOOR AIR QUALITY (IAQ)

The Quality of Building Air is Improved as the DuraPac Plus
series utilizes certain key features that assist in improving
indoor air quality. A sloped condensate pan eliminates possible
biological growth in the rooftop unit. A face-split evaporator coil
(090-150 sizes) design proves effective in removing additional
moisture from the supply air. Two-in. filters are standard in all
rooftop units and an optional filter status sensor is available.

SERVICEABILITY

Standardized Components for the complete DuraPac Plus
line of products are found in all safety devices, condenser-fan
motors, evaporator-fan motors, and control boards, while the
gas sections use common inducer motors, limit switches, and
rollout switches. This allows for greater inventory control, famil-
iarity of parts, and fewer stocked parts.
581B – Single Package
High-Efficiency
Gas/Electric Unit
Voltage Designation
E – 460-3-60
J – 208/230-1-60
P – 208/230-3-60
T – 575-3-60
Fuel and Control Type
V – Natural Gas/Direct
Spark Ignition
Nominal Tons
036 – 3 090 – 7-1/2
048 – 4 102 – 8-1/2
060 – 5 120 – 10
072 – 6 150 – 12-1/2
*Refer to the Trade Prices for ordering codes of factory-installed options.
FEATURES/BENEFITS (cont)

MODEL NUMBER NOMENCLATURE

581B E V 090 180
4
Easily Accessible Refrigerant Access Ports on all discharge,
suction, and liquid lines permit easy and accurate measure-
ments as well as simple accessibility.
Resettable 24-v Circuit Breaker On 581B090-150 Units
allows room for error without replacing transformers or fuses.
Single-Side Utility Connections provide easy access to per-
form any necessary service.
Color-Coded Wires permit easy tracing and diagnostics.
Belt-Driven Motors are accessible through a single access
door to facilitate servicing and adjusting after installation.
Compressors and Safety Switches are Easily Accessible for
troubleshooting and system analysis.
N AA
Factory-Installed Options*
N – Low NOx Units
Gas Heat Input (Btuh)
072 – 72,000
115 – 115,000
125 – 125,000
150 – 150,000
Low NOx*
060N – 60,000
090N – 90,000
120N – 120,000
180 – 180,000
220 – 224,000
250 – 250,000
California Compliant 3 Phase
071 – 72,000
114 – 115,000
149 – 150,000