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Bryant 677C--A Cooling Charging Table-Subcooling, 677C-- --A, 50VT500173 REV, A09099

Models: 677C--A

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677C-- -- A

50VT500173 REV 4.0

A09099

Fig. 17 - Cooling Charging Table-Subcooling

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Bryant 677C--A installation instructions Cooling Charging Table-Subcooling, 677C-- --A, 50VT500173 REV, A09099

Contents

Fig. 1 - Unit 677C--A TABLE OF CONTENTSSAFETY CONSIDERATIONS Installation InstructionsStep 1 - Check Equipment RECEIVING AND INSTALLATIONINTRODUCTION Step 2 - Provide Unit SupportA09146 Fig. 2 - 677C--A24-30Unit Dimensions677C-- --A A09147 Fig. 3 - 677C--A36-60Unit Dimensions677C-- --A SMALL CURB Fig. 4 - Roof Curb Dimensions677C ROOF CURB DETAILInspection ACCESS PANELS MUST BE IN PLACE WHEN RIGGINGStep 5 - Rig and Place Unit Rigging/Lifting of Unit See FigStep 6 - Connect Condensate Drain Step 7 - Install Flue HoodStep 8 - Install Gas Piping Fig. 6 - Condensate TrapFig. 7 - Sediment Trap Step 9 - Install Duct ConnectionsConfiguring Units for Downflow Vertical Discharge FIRE OR EXPLOSION HAZARDHorizontal Duct Covers Fig. 8 - Supply and Return Duct Opening677C-- --A Table 1 - Physical Data - Unit 677CTable 3 - Heating Inputs Table 1 - Physical Data - Unit 677C--ACont’dTable 2 - Maximum Gas Flow Capacity 677C-- --AHigh-VoltageConnections Step 10 - Install Electrical ConnectionsSpecial Procedures for 208-VOperation Control Voltage ConnectionsTransformer Protection Balance Point Setting-Thermidistator HybridPRE-START-UP ThermostatStep 1 - Check for Refrigerant Leaks Step 3 - Start-upHeating and Make Adjust- mentsSTART-UP Step 2 - Unit Sequence of OperationCheck Heating Control Adjust Gas InputFig. 11 - Burner Assembly Check Gas InputCheck Burner Flame Airflow and Temperature RiseLimit Switches Normal OperationChecking and Adjusting Refrigerant Charge Step 4 - Start-upCooling and Make Adjust- mentsRollout Switch Indoor Airflow and Airflow AdjustmentsTable 6 - Color Coding for Indoor Fan Motor Leads Gas Heating Fan Speed Set-upContinuous Fan Operation 677C-- --A677C-- --A Fig. 14 - Interface Fan Board IFBTable 8 - 677C--AWet Coil Pressure Drop Table 7 - Filter Pressure Drop Table IN. W.C677C-- --A UNIT677C-- --A Heating677C-- --A 1295677C-- --A 1445677C-- --A 1448677C A A09068677C-- --A A0920950VT500173 REV Fig. 17 - Cooling Charging Table-Subcooling677C-- --A A09099Air Filter MAINTENANCECleaning the Blower Motor and Wheel Indoor Blower and MotorFig. 18 - Blower Housing and Flue Collector Box Limit SwitchInduced Draft combustion air Blower Assembly Fig. 19 - Unit Access PanelsRefrigerant Circuit Electrical Controls and WiringOutdoor Fan Fig. 20 - Removal of Motor and Blower WheelPage EXPLOSION HAZARD High-PressureSwitchCopeland Scroll Compressor Puron Refrigerant Fig. 24 - Refrigerant CircuitCompressor Oil UNIT OPERATION AND SAFETY HAZARDRefrigerant System 677C-- --ASynthetic Roof Precautionary Procedure TROUBLESHOOTINGSTART-UPCHECKLIST Liquid Line Filter DrierSYMPTOM 677C-- --A677C-- --A Table 12 - Troubleshooting Guide-HeatingTable 13 - Troubleshooting Guide-LEDStatus Codes I. PRELIMINARY INFORMATION MODEL NO TEMPERATURESRemove and Store in Job Files PRESSURES