Manuals / Bryant / Household Appliance / Air Conditioner

Bryant 580G Ð Belt Tension Adjustment, C. Condenser-FanAdjustment, Ð Condenser-FanAdjustment

Models: 580G

1 44

Download 44 pages 8.75 Kb

Page 25

Fig. 35 Ð Belt Tension Adjustment

Fig. 35 Ð Belt Tension Adjustment

4.Turn motor jacking bolts to move motor mounting plate left or right for proper belt tension. Refer to Table 2 for proper belt tension.

5.Tighten nuts.

6.Adjust bolts and nut on mounting plate to secure motor in ®xed position. Recheck belt tension after 24 hours of operation. Adjust as necessary.

C. Condenser-Fan Adjustment

1.Shut off unit power supply.

2.Remove fan guard.

3.Loosen fan hub setscrews.

4.Adjust fan height on shaft using a straightedge placed across venturi and measure per Fig. 36.

5.Tighten setscrews and replace fan guard.

6.Turn on unit power.

V. GAS VALVE ADJUSTMENT

A. Natural Gas

The gas valve opens and closes in response to the thermostat or limit control.

When power is supplied to valve terminals 3 and 4, the pilot valve opens to the preset position. When power is supplied to terminals 1 and 2, the main valve opens to its preset position.

The regular factory setting is stamped on the valve body (3.5 in. wg).

To adjust regulator:

1.Set thermostat at setting for no call for heat.

2.Turn ®eld-supplied main gas valve to OFF position.

3.Remove 1¤8-in. pipe plug from manifold. Install a water manometer pressure-measuring device.

4.Set main gas valve to ON position.

5.Set thermostat at setting to call for heat.

6.Remove screw cap covering regulator adjustment screw (See Fig. 37).

7.Turn adjustment screw clockwise to increase pressure or counterclockwise to decrease pressure.

8.Once desired pressure is established, set thermostat set- ting for no call for heat, turn off main gas valve, remove pressure-measuring device and replace 1¤8-in. pipe plug and screw cap.

Fig. 36 Ð Condenser-Fan Adjustment

Fig. 37 Ð Gas Valve

Ð25Ð

Image 25

Bryant 580G Ð Belt Tension Adjustment, C. Condenser-FanAdjustment, V. GAS VALVE ADJUSTMENT A. Natural Gas, Ð Gas Valve

Contents

IX. Outdoor-AirInlet Assembly CONTENTSX. Power Exhaust/Barometric Relief III. Evaporator Fan Service andA. Roof Curb INSTALLATION I. PROVIDE UNIT SUPPORTB. Alternate Unit Support II. RIG AND PLACE UNITFig. 2 Ð Base Unit Dimensions, 580G240-360 Fig. 3 Ð Base Unit Dimensions, 580H240-360 CAUTION NOTICE TO RIGGERS ALL PANELS MUST BE IN PLACE WHEN RIGGINGFig. 4 Ð Rigging Label Table 1 Ð Specications A. Positioning Table 2 Ð Evaporator Fan Motor DataB. Roof Mount III. FIELD FABRICATE DUCTWORKV. FLUE HOOD Fig. 8 Ð Combustion Fan Housing LocationFig. 7 Ð Flue Hood Location VI. TRAP CONDENSATE DRAINC. Field Power Supply B. Power WiringVIII. ELECTRICAL CONNECTIONS A. Controls Options Ð10Ð Fig. 11 Ð Control Board DiagramFig. 13 Ð Field Power Wiring Connections D. Field Control WiringFig. 14 Ð Control Box Diagram Fig. 12 Ð Indoor Air Quality Sensor CongurationÐ12Ð Table 3Ð Electrical Data Ð 580G,H240-360Ð13Ð Table 3Ð Electrical Data Ð 580G,H240-360contIX. OUTDOOR-AIRINLET ASSEMBLY A. Economizer Fig. 15 Ð Field Control Thermostat WiringFig. 17 Ð Economizer Hood Assembly Fig. 16 Ð Adding Seal Strip to Top of Hood Sidesof Hood Sides Fig. 18 Ð Adding Seal Strip to Mounting FlangeFig. 21 Ð Adding Foam Strip to Hood Side Fig. 22 Ð Adding Foam Strip To Blockoff BaffleAttached to Filter Track Assembly B. Economizer SettingsFig. 23 Ð Mounting Angle Without Tabs Fig. 24 Ð Mounting Angle With TabsFig. 26 Ð Enthalpy Control and Sensor Fig. 27 Ð Wire Connections for Solid-StateEnthalpy Control HH57AC077 Fig. 29 Ð Economizer Details X. POWER EXHAUST/BAROMETRIC RELIEF DAMPER HOODA. Motormaster III Control Installation XI. ACCESSORIESFig. 31 Ð Motormaster III Baffle Details PRE-START-UP Fig. 32 Ð Low Ambient Kit Sensor LocationTable 5 Ð DIP Switch Factory Settings Table 4 Ð DIP Switch CongurationI. COOLING SECTION START-UPAND ADJUSTMENTS START-UPC. Power Exhaust Operation II.HEATING SECTION START-UPAND ADJUSTMENTSC. Cooling Capacity Control Table 6 Ð Cooling Capacity Staging TableD. Smoke Control Modes Fig. 33 Ð Field-SuppliedSmoke Detector WiringE. Smoke Detector F. Indoor Air Quality ControlA. Evaporator Fan Performance Adjustment IV. INDOOR AIRFLOW AND AIRFLOW ADJUSTMENTSAdjustment B. Belt Tension Adjustment I. Head Pressure ControlC. Condenser-FanAdjustment Fig. 35 Ð Belt Tension AdjustmentV. GAS VALVE ADJUSTMENT A. Natural Gas Fig. 36 Ð Condenser-FanAdjustmentÐ26Ð Table 10 Ð Motor Limitations Table 9 Ð Fan Performance Ð Power ExhaustTable 11 Ð Air Quantity Limits Ð27ÐCARE AND MAINTENANCE VII. POWER EXHAUST OPERATIONVI. MAIN BURNERS A.Main Burner Removal FigFig. 39 Ð Door Latch I. CLEANING SERVICEA. Evaporator Coil B. Condenser CoilFig. 41 Ð Typical Gas Heating Section Fig. 40 Ð Spark Gap AdjustmentFig. 42 Ð Gas Heat Section Details Ð30ÐIV. EVAPORATOR-FANMOTOR REPLACEMENT III.EVAPORATOR FAN SERVICE AND REPLACEMENTV. POWER FAILURE Fig. 43 Ð Cooling Charging Chart 580G,H240-360XIII. REPLACEMENT PARTS D. High- and Low-PressureSwitchesVII. FILTER DRIER VIII. THERMOSTATIC EXPANSION VALVE TXVI. DIAGNOSTIC LEDs Light-EmittingDiodes TROUBLESHOOTINGFig. 44 Ð Typical Refrigerant Circuiting II. ERROR CODE SUMMARY Table 12 Ð Control Board LED AlarmsTable 13 Ð IGC Board Error Code Summary III. INPUT AND OUTPUT CHANNEL DESIGNATIONSÐ35Ð Table 14 Ð I/O Channel Designations Base ModuleÐ36Ð Fig. 45 Ð IGC Control Heating and CoolingÐ37Ð LEGEND FOR FIGÐ38Ð Ð39Ð Fig. 48 Ð Power Schematic 580G,H240-360ÐÐ40Ð Fig. 49 Ð 24 V Control Schematic 580G,H240-360Ð41Ð Fig. 50 Ð Component Arrangement 580G,H240-360PACKAGED SERVICE TRAINING ELECTRICAL START-UPCHECKLISTTEMPERATURES PRESSURESGENERAL