Bryant 581A operation manual 753 915 844 1077 949 1287 1047

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Table 7 — Fan Performance — 581A155300 (High Heat Units with Standard Indoor Fan Motor

 

 

 

 

 

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

 

 

 

 

 

 

CFM

 

0.2

 

 

0.4

 

 

 

0.6

 

 

0.8

 

 

 

1.0

 

 

 

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

 

Watts

Bhp

Rpm

Watts

 

Bhp

Rpm

Watts

 

Bhp

3750

753

915

1.05

844

1077

1.24

949

 

1287

1.48

1047

1507

 

1.73

1139

1735

 

2.00

4000

764

1006

1.16

872

1211

1.39

972

 

1425

1.64

1067

1648

 

1.90

1156

1880

 

2.16

4250

798

1147

1.32

901

1357

1.56

997

 

1576

1.81

1089

1803

 

2.07

1175

2038

 

2.34

4500

832

1301

1.50

931

1516

1.74

1024

 

1739

2.00

1112

1970

 

2.27

1195

2209

 

2.54

4750

868

1467

1.69

962

1688

1.94

1051

 

1916

2.20

1136

2151

 

2.47

1217

2393

 

2.75

5000

903

1648

1.89

994

1873

2.15

1079

 

2106

2.42

1161

2345

 

2.70

1240

2590

 

2.98

5250

939

1842

2.12

1026

2073

2.38

1109

 

2309

2.66

1188

2553

 

2.9

 

5500

976

2050

2.36

1059

2286

2.63

1139

 

2528

2.91

 

 

5750

1012

2273

2.61

1093

2514

2.89

 

 

 

6000

1049

2511

2.89

 

 

 

 

 

 

 

 

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

 

 

 

 

 

 

CFM

 

1.2

 

 

1.4

 

 

 

 

1.6

 

 

1.8

 

 

 

2.0

 

 

 

Rpm

Watts

Bhp

Rpm

Watts

 

Bhp

Rpm

 

Watts

Bhp

Rpm

Watts

 

Bhp

Rpm

Watts

 

Bhp

3750

1227

1973

2.27

1310

2218

 

2.55

1390

 

2471

2.84

 

 

4000

1241

2120

2.44

1323

2368

 

2.72

1400

 

2623

3.02

 

 

4250

1258

2281

2.62

1337

2531

 

2.91

 

 

 

4500

1275

2454

2.82

 

 

 

 

4750

1295

2642

3.04

 

 

 

 

5000

 

 

 

 

5250

 

 

 

 

5500

 

 

 

 

5750

 

 

 

 

6000

 

 

 

 

 

 

LEGEND

Bhp

Brake Horsepower

FIOP

Factory-Installed Option

Watts —

Input Watts to Motor

*Standard low-medium static drive range is 834 to 1064 rpm. Alternate high-static drive range is 1161 to 1426. Other rpms require a field- supplied drive.

NOTES:

1.Maximum continuous bhp for the standard motor is 3.13. The maxi- mum continuous watts is 2700. Do not adjust motor rpm such that motor maximum bhp and/or watts is exceeded at the maximum operating cfm.

2.Static pressure losses (i.e., economizer) must be added to external static pressure before entering Fan Performance table.

3.Interpolation is permissible. Do not extrapolate.

4.Fan performance is based on wet coils, clean filters, and casing losses. See Table 13 for accessory/FIOP static pressure information.

5.Extensive motor and drive testing on these units ensures that the full bhp and watts range of the motor can be utilized with confidence. Using your fan motors up to the watts or bhp rating shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

6.Use of a field-supplied motor may affect wiring size. Contact your Bryant representative for details.

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Image 19
Contents Safety Considerations ContentsInstallation Provide Unit Support Roof Curb Details Roof Mount Alternate Unit SupportII. RIG and Place Unit PositioningBase Unit Dimensions 581A155 Base Unit Dimensions 581A240 Unit 581A Physical Data581A180, 240 Unit Shown Install Flue Hood and Wind BaffleIII. Field Fabricate Ductwork IV. Make Unit Duct ConnectionsVIII. Make Electrical Connections VII. Install GAS PipingField Power Supply VI. Trap Condensate DrainOptional Economizer Field Control WiringMake OUTDOOR-AIR Inlet Adjustments Manual Outdoor-Air DamperFLA LRA MCA Mocp Electrical Data25% Outdoor-Air Section Details Install OUTDOOR-AIR HoodSeal Strip Location Enthalpy Control InstallationMotormaster I Control Installation 581A155 and 180 Only XI. Install ALL AccessoriesUnit Preparation II. Service ValvesIV. Refrigerant Service Ports START-UPVIII. Evaporator FAN VI. Internal WiringXII. Accessory Economizer Adjustment VII. Crankcase HeatersBhp Brake Horsepower Fan Performance 581A180270 Low Heat Units Fan Performance 581A240270 Low Heat Units 753 915 844 1077 949 1287 1047 753 942 844 1101 949 Fan Performance 581A180360 High Heat Units Fan Performance 581A240360 High Heat Units Air Quantity Limits Evaporator Fan Motor SpecificationsAccessory/FIOP Economizer Static Pressure in. wg Fan RPM at Motor Pulley SettingXIV. Base Unit Operation XIII. GAS HeatService Cleaning II. Lubrication IV. Evaporator FAN Service and Replacement581A240 Units Fig Belt Tension AdjustmentVI. CONDENSER-FAN Adjustment 581A155 and 180 Units FigVIII. Power Failure VII. Economizer AdjustmentIX. Refrigerant Charge XIII. Protective Devices GAS Valve AdjustmentXI. Main Burners XII. Filter DrierXV. Control Circuit XVI. Replacement PartsXVII. Diagnostic Leds XIV. Relief DevicesSpark Gap Adjustment Typical Wiring Schematic and Typical Component Arrangement Typical Wiring Schematic 581A180, 208/230 V Unit Shown Typical Component Arrangement 581A180 Shown Cooling Service Analysis TroubleshootingProblem Cause Remedy Burners will not ignite Heating Service AnalysisIGC Control Heating and Cooling Call for Free Catalog Packaged Service TrainingPage General TemperaturesElectrical Pressures
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581A specifications

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