Bryant 581J specs

581J

11.Shall include an EIA-485 protocol communication port, an access port for connection of either a computer or a Bryant technician tool, an EIA-485 port for network communication to intelligent space sensors and displays, and a port to connect an optional LonWorks plug-in communications card.

12.Shall have built-in support for Bryant technician tool.

13.Software upgrades will be accomplished by local download. Software upgrades through chip replacements are not allowed.

14.Shall be shock resistant in all planes to 5G peak, 11ms during operation, and 100G peak, 11ms during storage.

15.Shall be vibration resistant in all planes to 1.5G @ 20-300 Hz.

16.Shall support a bus length of 4000 ft (1219m) max, 60 devices per 1000 ft (305m) section, and 1 RS-485 repeater per 1000 ft (305m) sections.

23 09 23.13.B. RTU-MP - Open protocol, direct digital controller:

1.Shall be ASHRAE 62-2001 compliant.

2.Shall accept 18-30VAC, 50-60Hz, and consumer 15VA or less power.

3.Shall have an operating temperature range from -40_F (-40_C) to 130_F (54_C), 10% - 90% RH (non-condens- ing).

4.Shall include built-in protocol for BACNET (MS/TP and PTP modes), Modbus (RTU and ASCII), Johnson N2 and LonWorks. LonWorks Echelon processor required for all Lon applications shall be contained in separate com- munication board.

5.Shall allow access of up to 62 network variables (SNVT). Shall be compatible with all open controllers

6.Baud rate Controller shall be selectable using a dipswitch.

7.Shall have an LED display independently showing the status of serial communication, running, errors, power, all digital outputs, and all analog inputs.

8.Shall accept the following inputs: space temperature, setpoint adjustment, outdoor air temperature, indoor air qu- ality, outdoor air quality, compressor lock-out, fire shutdown, enthalpy switch, and fan status/filter status/ humid- ity/ remote occupancy.

9.Shall provide the following outputs: economizer, fan, cooling stage 1, cooling stage 2, heat stage 1, heat stage 2, heat stage 3/ exhaust/ reversing valve.

10.Shall have built-in surge protection circuitry through solid state polyswitches. Polyswitches shall be used on in- coming power and network connections. Polyswitches will return to normal when the “trip” condition clears.

11.Shall have a battery back-up capable of a minimum of 10,000 hours of data and time clock retention during power outages.

12.Shall have built-in support for Bryant technician tool.

13.Shall include an EIA-485 protocol communication port, an access port for connection of either a computer or a Bryant technician tool, an EIA-485 port for network communication to intelligent space sensors and displays, and a port to connect an optional LonWorks communications card.

14.Software upgrades will be accomplished by either local or remote download. No software upgrades through chip replacements are allowed.

23 09 33 Electric and Electronic Control System for HVAC

23 09 33.13 Decentralized, Rooftop Units:

23 09 33.13.A. General:

1.Shall be complete with self-contained low-voltage control circuit protected by a resettable circuit breaker on the 24-v transformer side. Transformer shall have 75VA capability.

2.Shall utilize color-coded wiring.

3.Shall include a central control terminal board to conveniently and safely provide connection points for vital con- trol functions such as: smoke detectors, phase monitor, gas controller, economizer, thermostat, DDC control op- tions, and low and high pressure switches.

4.The heat exchanger shall be controlled by an integrated gas controller (IGC) microprocessor. See heat exchanger section of this specification.

5.Unit shall include a minimum of one 8-pin screw terminal connection board for connection of control wiring.

23 09 33.23.B. Safeties:

1.Compressor over-temperature, over-current. High internal pressure differential.

2.Low-pressure switch.

a.Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low and high pres- sure switches. They shall physically prevent the cross-wiring of the safety switches between circuits 1 and 2.

b.Low pressure switch shall use different color wire than the high pressure switch. The purpose is to assist the installer and service technician to correctly wire and or troubleshoot the rooftop unit.

581J specifications

The Bryant 581J is a high-efficiency gas furnace that exemplifies advanced heating technology and innovative design. Known for its reliability and comfort, the Bryant 581J offers impressive performance features that cater to both residential and commercial heating needs. One of its standout characteristics is the two-stage heating system, which allows the furnace to operate at a lower stage when the heating demand is modest, providing improved comfort and energy efficiency. This feature also minimizes temperature fluctuations, ensuring a more consistent and comfortable indoor environment.

Energy efficiency is a critical aspect of the Bryant 581J. With an annual fuel utilization efficiency (AFUE) rating of up to 96%, this furnace is designed to convert a high percentage of fuel into usable heat, which helps homeowners save on energy bills. The high-efficiency design also contributes to a reduced carbon footprint, aligning with modern environmental concerns.

The Bryant 581J is equipped with technologically advanced features, including the ComfortTech™ control system. This system enables enhanced temperature regulation and integrates easily with smart home systems, allowing homeowners the convenience of remote control through smartphones and tablets. Additionally, the furnace includes an electronically commutated motor (ECM) blower, which optimizes airflow and reduces energy consumption while enhancing the overall comfort level within the space.

Noise reduction is another key characteristic of the Bryant 581J. The furnace is engineered with sound-dampening technology, resulting in quieter operation compared to conventional furnaces. This attention to noise management makes it an appealing choice for residential applications, where peace and tranquility are crucial.

The durable construction of the Bryant 581J ensures longevity and reliability. With a robust cabinet and quality materials, it is built to withstand the rigors of daily operation. Furthermore, the furnace comes with a warranty that provides peace of mind, protecting the investment over the years.

Overall, the Bryant 581J represents a blend of efficiency, advanced technology, and reliable performance. With its high AFUE rating, innovative features, and quiet operation, it stands out in the market as a top choice for anyone seeking a dependable heating solution. Whether for new installations or replacements, the Bryant 581J is designed to meet the heating demands of today's energy-conscious homeowners.