Bryant 558D installation instructions Parablade Economizer Troubleshooting, Enthalpy readings

Page 34

Table 21 Ð PARABLADE Economizer Troubleshooting

PROBLEM

CAUSE

 

REMEDY

Damper does not

Evaporator fan not on.

Check wiring between G on connection board and indoor (evaporator) fan

open.

 

contactor.

 

No power to economizer

1.

Disconnect power at TR and TR1. Disconnect jumper across P and P1.

 

motor.

2.

Connect jumper across TR and 1.

 

 

3.

Connect jumper across T1 and T.

 

 

4.

If connected, remove enthalpy sensor from terminals SO and +.

 

 

5.

Apply power (24 vac) to terminals TR and TR1. The LED should be off and

 

 

 

the damper should be in the closed position.

 

 

6.

Disconnect the factory-installed 620 ohm resistor from terminals SR and +.

 

 

 

The LED should light up and the motor should drive towards open. If this

 

 

 

does not happen, replace the economizer control module.

 

Economizer motor failure.

If the indoor (evaporator) fan and economizer motor are energized, verify that

 

 

there is a minimum of 24 vac at terminals TR and TR1. If the motor is not oper-

 

 

ating, replace the motor.

Economizer op-

Economizer control module

1.

To simulate high or low enthalpy, reconnect the factory-installed 620 ohm

eration limited to

failure.

 

resistor across terminals SR and +.

minimum position.

 

2.

Connect 1.2 Kohm checkout resistor across terminals SO and +. Turn the

 

 

 

enthalpy set point to ``A.'' The LED should turn on, indicating low enthalpy.

 

 

 

The motor should drive towards open. If LED does not light, replace module.

 

 

 

If motor does not drive open, check motor operation.

 

 

3.

Turn the enthalpy set point to ``D.'' The LED should turn off, indicating high

 

 

 

enthalpy. The motor should drive towards closed. If these actions do not oc-

 

 

 

cur, replace module.

 

 

4.

Disconnect 1.2 Kohm checkout resistor before resuming operation.

Damper does not

No power to economizer.

1.

Disconnect power at TR and TR1. Disconnect jumper across P and P1.

close.

 

2.

Connect jumper across TR and 1.

 

 

3.

Connect jumper across T1 and T.

 

 

4.

If connected, remove enthalpy sensor from terminals SO and +. Factory-

 

 

5.

installed 620 ohm resistor should be connected to terminals SR and +.

 

 

Apply power (24 vac) to terminals TR and TR1. The LED should be off and

 

 

 

the damper should be in the closed position.

 

 

6.

Disconnect the factory-installed 620 ohm resistor from terminals SR and +.

 

 

 

The LED should light up and the motor should drive towards open. If this

 

 

 

does not happen, replace the economizer control module.

 

Spring return failure.

If power to unit is off and damper does not close, check for a bound linkage. If

 

 

linkage is not bound, then internal spring may be broken. Replace

 

 

actuator.

 

Economizer motor failure.

If the economizer control module is functioning properly, verify that there is a

 

 

minimum of 24 vac at terminals TR and TR1. If the motor is not operating, re-

 

 

place the motor.

Damper does not

Sensor incorrectly wired or

To verify sensor operation, reconnect the + lead of the outdoor enthalpy sensor

open or close

bad.

to the + terminal of the economizer control module. Connect a DC milliammeter

according to

 

between terminals SO of the economizer control module and terminals S of the

enthalpy readings.

 

enthalpy sensor. The milliammeter should indicate between 3 and 25 mA if the

 

 

sensor is operating properly. If the milliammeter indicates 0, the sensor may be

 

 

wired backwards. If any other readings are shown, replace the sensor.

LED Ð Light-Emitting Diode

 

 

Ð34Ð

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Contents Safety Considerations Important Ð Read Before InstallingContents InstallationSTD Unit Economizer Weight Corner Weight Weight Durablade ParabladeSlab Mount Horizontal Units Only Locate the UnitClearance II. Unit Duct ConnectionsUnit Size AccessoryRoof Curb CRRFCURB001A00Specications External Trap Condensate Drain Maximum Allowable DifferenceIV. Field Connections Field Duct ConnectionsInternal Trap Condensate Drain Low-Voltage Connections Typical Component Location Type Electrical DataSize RLA LRA FLANEC HacrMocp RLAAccessory Installation Optional Outdoor-Air Damper InstallationOptional Durablade Economizer Optional Parablade EconomizerHorizontal Durablade Economizer Installation Degree Rotation Outdoor-Air Thermostat Enthalpy Control Installation Control Control Point Approx Curve AT 50% RHSTART-UP Heating Section START-UP and Adjustments PRE-START-UPII. Cooling Section START-UP and Adjustments Fan Rpm at Motor Pulley Settings III. Indoor Airflow and Airflow AdjustmentsDirect Drive Motors Standard Direct Drive Motor Airflow Motor DataESP Alternate Belt Drive Motor Airflow 1300 576 210 644 263 704 326 764 389 Cfm Rpm WattsWatts Rpm 1200 542 168 616 221 678 278 739 336 1400 610 252 673 315 732 378 791 441Standard Belt Drive Motor Airflow Ð24Ð 1400 577 221 642 284 704 347 766 410 Watts Rpm 1200 514 158 590 210 657 263 723 315 828 4411300 545 189 615 242 680 305 744 368 1500 609 273 670 326 729 394 788 4621350 1645 1424 1921 1700 729 388 787 450 895 593 Cfm Rpm Watts 1500 658 276 722 337 840 4701343 1615 1431 1829 1600 693 327 754 388 867 531 1364 1676 1432 1931 1800 765 460 821 521Belt Drive Motors Ventilation SequenceAIR Filter Care and MaintenanceService Cleaning Evaporator CoilCompressors III. CONDENSER-FAN Adjustment FigII. Lubrication Fan-Motor BearingsReplacement Parts IV. Refrigerant ChargeCooling Charging Chart 558D036 Troubleshooting Cooling TroubleshootingDurablade Economizer Troubleshooting Damper does notParablade Economizer Troubleshooting Enthalpy readingsMTR AHALSM CAPPage Page Service Training Call for Free CatalogPage III. START-UP Electrical TemperaturesPreliminary Information Pressures

558D specifications

The Bryant 558D represents a leading-edge model in the realm of advanced heating, ventilation, and air conditioning (HVAC) systems. Designed for both residential and light commercial applications, this unit brings together efficiency, performance, and reliability, making it a go-to choice for homeowners and contractors alike.

One of the standout features of the Bryant 558D is its high-efficiency rating. With SEER (Seasonal Energy Efficiency Ratio) ratings that can reach up to 18, it allows homeowners to enjoy significant savings on electricity bills while maintaining a comfortable indoor environment. The system is powered by advanced compressors that ensure optimal performance across various climate conditions, providing consistent cooling and heating as needed.

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The Bryant 558D also features smart technology compatibility, allowing users to integrate it with modern home automation systems. This connectivity provides homeowners with remote control capabilities, enabling them to regulate their home’s temperature via smartphone applications. This not only adds to convenience but also supports energy management strategies, as users can adjust settings based on occupancy and lifestyle patterns.

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Overall, the Bryant 558D stands out as a sophisticated solution for heating and cooling needs, combining energy efficiency, advanced technology, durability, and user-friendly features. It is an excellent investment for those looking to enhance their home comfort while also being mindful of energy consumption.
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