Bryant 581J Outdoor Air Enthalpy Control PNO 33CSENTHSW, LEDs, Differential Enthalpy Control

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Table 4 – LEDs

 

The LEDs on the RTU Open show the status of certain functions

 

 

 

If this LED is on...

 

Status is...

 

 

 

Power

 

RTU Open has power

 

 

 

Rx

 

RTU Open is receiving data from the network segment

 

 

 

Tx

 

RTU Open is transmitting data over the network segment

 

 

 

DO#

 

The digital output is active

 

The Run and Error LEDs indicate control module and network status

If Run LED shows...

And Error LED shows...

2 flashes per second

Off

 

 

2 flashes per second

2 flashes,

alternating with Run LED

 

2 flashes per second

3 flashes,

then off

 

2 flashes per second

4 flashes,

then pause

 

 

 

2 flashes per second

On

 

 

5 flashes per second

On

 

 

5 flashes per second

Off

 

 

7 flashes per second

7 flashes per second, alternating with

Run LED

 

 

 

14 flashes per second

14 flashes per second,

alternating with Run LED

 

On

On

 

 

Status is...

Normal

Five minute auto---restart delay after system error

Control module has just been formatted

Two or more devices on this network have the same ARC156 network address

Exec halted after frequent system errors or control programs halted

Exec start---up aborted, Boot is running Firmware transfer in progress, Boot is running

Ten second recovery period after brownout

Brownout

Failure. Try the following solutions:

STurn RTU Open off, then on. S Format RTU Open.

S Download memory to RTU Open. S Replace RTU Open.

581J

NOTE: Refer to Catalog No. TS-5580J-01 for complete configuration of RTU Open operating sequences. Contact your Bryant applications engineer for details on configuration and troubleshooting of connected networks.

Outdoor Air Enthalpy Control (PNO 33CSENTHSW)

Enthalpy

 

Switch

 

24V

RED

GND

BLK

LOW

GRA

PL6-1 (24-V)

PL6-4 (COM)

7CTB ECON

(RTU Open: to J2-6)

The enthalpy control (33CSENTHSW) is available as a field-installed accessory to be used with the EconoMi$er2 damper system. The outdoor air enthalpy sensor is part of the enthalpy control. (The separate field-installed accessory return air enthalpy sensor (33CSENTSEN) is required for differential enthalpy control. See Fig. 53.)

Locate the enthalpy control in the economizer next to the Actuator Motor. Locate two GRA leads in the factory harness and connect the gray lead labeled “ESL” to the terminal labeled “LOW”. See Fig. 53. Connect the enthalpy control power input terminals to economizer actuator power leads RED (connect to 24V) and BLK (connect to GND).

Factory Wiring Harness

C11169

Fig. 53 - Enthalpy Switch (33CSENTHSW) Connections

The outdoor enthalpy changeover setpoint is set at the enthalpy controller.

Differential Enthalpy Control —

Differential enthalpy control is provided by sensing and comparing the outside air and return air enthalpy conditions. Install the outdoor air enthalpy control as described above. Add and install a return air enthalpy sensor.

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Contents Installation Instructions Safety Considerations Unit Dimensional Drawing Sizes Unit Dimensional Drawing Sizes 07-09 Unit Dimensional Drawing Size Unit Dimensional Drawing Size 12 Plan for Unit Location Operating WeightsRoof Mount Units LB KGPlan for Sequence of Unit Installation Inspect UnitProvide Unit Support Roof Curb Details Sizes Roof Curb Details Size MAX Weight Dimensions Unit Field Fabricate DuctworkRig and Place Unit Install Outside Air Hood Ductwork when requiredConvert to Horizontal and Connect Positioning on CurbInstall Flue Hood Install Gas PipingEconomizer Hood and Two-Position Hood Steel Pipe Spacing of Supports Nominal Diameter Dimension Natural Gas Supply Line Pressure RangesUnit Model Unit Size MIN MAX Gas Line Piping Condensate Drain Pan Side View Install External Condensate Trap and LineUnits Without Factory-Installed Disconnect Field Power SupplyMake Electrical Connections All UnitsConvenience Outlet Location Weatherproof Cover InstallationUnits without Thru-Base Connections Field Control WiringThermostat Unit Connect Primary TransformerField Control Wiring Raceway Heat Anticipator Settings Perfect Humidity Space RH Controller Perfect Humidityt Control ConnectionsTo connect a field-supplied humidistat To connect the Edge Programmable Thermidistat T6-PRH01-AOAT RRS RTU Open Multi-Protocol Control Board RTU Open Control SystemRTU Open System Control Wiring Diagram C11070 RTU Open Controller Inputs and Outputs Supply Air Temperature SAT SensorSpace Temperature SPT Sensors Field ConnectionsEconoMi$er2 IAQ Sensor SEN J4-2 COM J4-3 24 VAC Relative Humidity Sensors Space or Duct Mounted Space Relative Humidity Sensor Typical WiringConnecting Discrete Inputs Duct Relative Humidity Sensor Typical WiringGeneral Communication Wiring ProtocolsProtocol DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1 Baud Rate DS2 DS1RTU Open Troubleshooting Local AccessLEDs Outdoor Air Enthalpy Control PNO 33CSENTHSWLEDs on the RTU Open show the status of certain functions Differential Enthalpy ControlSmoke Detectors WiringReturn Air Enthalpy Sensor SystemSee Completing Installation of Return Air Smoke Smoke Detector LocationsSupply Air Return Air Detector Shipping Position Unit Wire/Fuse or Hacr Breaker Sizing Data Hacr FLA LRA Brkr Unit NOM IFM Combustion Power No P.EUnbalanced 3-Phase Supply Voltage Install Accessories Adjust Factory-Installed OptionsEconoMi$er IV Occupancy Switch Smoke Detectors
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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.

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