J4-1 or J4-4 + 24 VDC Supply Voltage

 

 

J4-2 or J4-5 (-) 4 to 20 mA Current Loop Output

 

 

to RTU-OPEN

 

 

 

 

SPAN

 

 

ZERO

4-20 VAC GND 0-5V

mA

or

or

 

VDC

0-10V

Relative Humidity Sensor (Polarized Male Connector)

581J

C10839

Fig. 48 - Duct Relative Humidity Sensor Typical Wiring

Humidistat: Use of a field-supplied humidistat provides the RTU Open insight to the relative humidity in the space. The humidistat reads the RH level in the space and compares it to its setpoint to operate a dry contact. The humidistat is a dedicated input on the configurable input 9 and tells the RTU Open when the RH level is HIGH or LOW. The normal condition for humidity is LOW. A normally open humidistat is the factory default control for the Perfect Humidityt option.

To wire in the field:

SJ5-8 = 24 VAC source for dry contact S J5-7 = Signal input

Connecting Discrete Inputs —

Filter Status: The filter status accessory is a field-installed accessory. This accessory detects plugged filters. When installing this accessory, the unit must be configured for filter status by setting MENUConfigInputsinput 3, 5, 8, or 9 to Filter Status and normally open (N/O) or normally closed (N/C). Input 8 or 9 is recommended for easy of installation. Refer to Fig. 34 and Figs. 35 or 36 for wire terminations at J5.

Fan Status: The fan status accessory is a field-installed accessory. This accessory detects when the indoor fan is blowing air. When installing this accessory, the unit must be configured for fan status by setting MENUConfigInputsinput 3, 5, 8, or 9 to Fan Status and normally open (N/O) or normally closed (N/C). Input 8 or 9 is recommended for easy of installation. Refer to Fig. 34 and Figs. 35 or 36 for wire terminations at J5.

Remote Occupancy: The remote occupancy accessory is

afield-installed accessory. This accessory overrides the unoccupied mode and puts the unit in occupied mode. When installing this accessory, the unit must be configured for remote occupancy by setting MENUConfigInputsinput 3, 5, 8, or 9 to Remote Occupancy and normally open (N/O) or normally closed (N/C).

Also set MENUSchedulesoccupancy source to DI on/off. Input 8 or 9 is recommended for easy of installation. Refer to Fig. 34 and Table 3 for wire terminations at J5.

Power Exhaust (output): The relay used by the RTU Open board to control power exhaust is a dry contact which means it does not have 24vac. This 24vac must be connected to the relay to allow it to operate the power exhaust relay in the PE accessory. A 24vac source must be provided to J11-2 on the RTU Open control board. This can be provided by the unit’s transformer from various sources. The “R” terminal on the unit’s low voltage terminal board (LVTB) is a logical source. Refer to Fig. 34 and Figs. 35 or 36 for wire terminations at J11.

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Bryant 581J installation instructions Duct Relative Humidity Sensor Typical Wiring, Connecting Discrete Inputs

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.