Manuals / Bryant / Household Appliance / Heat Pump

Bryant 604D--A Large Chassis, Economizer Hood Top Panel Removal, 604D-- --A, Hood Divider Removed

Models: 604D--A

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Large Chassis

604D-- -- A

Large Chassis

To install the Vertical Economizer on the large chassis perform the following procedure:

1. Turn off unit power supply and install lockout tag.

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before installing or servicing system, always turn off main power to system and install lockout tag. There may be more than one disconnect switch. Turn off accessory heater power switch if applicable.

2.Remove economizer hood top panel from the return side of the unit. See Fig. 29. Keep screws and panel next to the unit.

3.Remove red shipping tape that attaches the outside air temperature (OAT) sensor to the economizer assembly and place sensor next to the unit.

4.Remove horizontal return duct cover panel and cut the wire ties that hold the hood divider to the economizer assembly. Slide hood divider off from the two slots holding it in place and place next to the unit. See Fig. 30.

5.Replace horizontal return duct cover panel. Screw in place ensuring all seams are air and watertight.

6.Open economizer hood package found on the top skid. Mount OAT sensor to its assigned bracket by screwing together with provided two #8 fasteners. Afterwards install OAT sensor to the right side hood panel with the provided #10 screws. See Fig. 31.

7.Install the 2 angle filter brackets to the right and left hood side panels respectively with the #10 screws provided. See Fig. 32.

8.Assemble hood according to Fig. 33 screwing together with provided #10 sheet metal screws.

9.Install assembled hood over the economizer opening in the replacement return chamber panel. See Fig. 34. Screw in place through pre-punched holes. Make sure all seams are air and watertight.

NOTE: The two wires that connect to the outside air temperature sensor (OAT) should remain accessible.

10.Connect the outside air temperature sensor (OAT) to the economizer per wiring diagram.

Filter Access

Panel

Hoop Top

Panel

OAT Sensor

A09696

Fig. 29 - Economizer Hood Top Panel Removal

Hood Divider (Removed)

Horizontal

Return Duct

Cover Panel

Hood

Divider

A09697

Fig. 30 - Horizontal Return Duct Cover Panel and Hood Divider Removal

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Bryant 604D--A Large Chassis, Economizer Hood Top Panel Removal, 604D-- --A, Hood Divider Removed, Electrical Shock Hazard

Contents

TABLE OF CONTENTS SAFETY CONSIDERATIONSFig. 1 - Unit 604D--A Installation InstructionsRECEIVING AND INSTALLATION Installation on older “G” series roof curbsINTRODUCTION Step 1 - Check EquipmentStep 4 - Rig and Place Unit UNIT FALLING HAZARDPROPERTY DAMAGE HAZARD 604D-- --AFig. 2 - 604D--A24-36Unit Dimensions 604D-- --AA09471 Fig. 3 - 604D--A42-60Unit Dimensions 604D-- --AA09472 UNIT PLACEMENT ON COMMON CURB Fig. 4 - Roof Curb DimensionsLARGE CURB SMALL/COMMON CURBStep 5 - Select and Install Ductwork Fig. 5 - Rigging WeightsRigging/Lifting of Unit See Fig Fig. 6 - Unit Leveling TolerancesFig. 7 - Supply and Return Duct Openings PERSONAL INJURY AND ELECTRICAL OPERATION HAZARDFig. 8 - Slab Mounting Detail 604D-- --AStep 7 - Install Electrical Connections Step 6 - Provide for Condensate DisposalHigh-VoltageConnections UNIT COMPONENT DAMAGE HAZARDSpecial Procedures for 208-VOperation Accessory Electric Heaters InstallationControl Voltage Connections Standard ConnectionsTable 1 – Physical Data - Unit 604D--A 604D-- --ASIZE AIRFLOW CFM 604D- -A24604D A A10197604D A 604D A A10194604D-- --A Fig. 13 - Connection Wiring Diagram 604D AA10195 Fig. 13 Cont. - Ladder Wiring Diagram 604D-- --AStep 2 - Start-UpAdjustments START-UPStep 1 — Check for Refrigerant Leaks Checking Cooling and Heating Control OperationChecking and Adjusting Refrigerant Charge Indoor Airflow and Airflow Adjustments604D--ASequence of Operation UNIT OPERATION HAZARDContinuous Fan Operation 604D-- --AFig. 15 - Interface Fan Board IFB 604D-- --AMAINTENANCE Step 3 - Defrost ControlStep 1 - Air Filter Quiet ShiftStep 3 - Outdoor Fan 604D-- --AELECTRICAL SHOCK HAZARD A24-60Series A Table 5 - 604D--AWet Coil Pressure Drop IN. W.CTable 7 - Filter Pressure Drop Table IN. W.C Small Cabinet 24-36cfmFig. 17 - Cooling Charging Table-Subcooling 604D-- --AA09070 Step 4 - Electrical Controls and Wiring Step 5 - Refrigerant CircuitStep 8 - Pressure Switches Step 9 - Loss of Charge SwitchStep 10 - High-PressureSwitch Fig. 20 - Unit Access PanelsTROUBLESHOOTING START-UPCHECKLISTLoss of Charge Switch Synthetic Roof Precautionary ProcedurePURONR R-410AQUICK REFERENCE GUIDE 604D-- --ATable 9 - Troubleshooting Chart 604D-- --ARemove and Store in Job Files I. PRELIMINARY INFORMATION MODEL NOTEMPERATURES PRESSURESVERTICAL ECONOMIZER FACTORY INSTALLED OPTION ACCESSORIESINSTALLATION Table 10 - Package ContentsFig. 23 - Oat Sensor Installed Fig. 22 - Economizer Hood Top Panel RemovalTable 13 - Filter Part Number 604D-- --AFig. 25 - Filter Angle Bracket Installation Hood Divider RemovedLeft Hood Side PanelFig. 26 - Economizer Hood Assembly Fig. 27 - Economizer Hood InstallationFig. 28 - Filter Installation See Through View 604D-- --ALarge Chassis Fig. 29 - Economizer Hood Top Panel Removal604D-- --A Hood Divider RemovedFig. 31 - OAT Bracket Installation Fig. 32 - Filter Angle Bracket InstallationFilter Angle BracketFig. 33 - Hood Assembly Fig. 34 - Economizer Hood InstallationTable 14 - Filter Part Number 604D-- --ACONFIGURATION Fig. 35 - Filter Installation See through viewEconomizer Standard Sensors 604DLocations Fig. 40 - Enthalpy Sensor Mounting Location8.9C 11.7C 12.8C 14.4C 17.2C 20C 22.8C 25.6C 604D-- --AFig. 42 - CO2 Sensor Maximum Range Setting Fig. 43 - Economizer ControllerFig. 41 - Enthalpy Changeover Setpoints 604D-- --A604D-- --A 4.Connect 24 vac across terminals TR and TR1Fig. 44 - Economizer Wiring Diagram 604D-- --AA10059 Fig. 45 - Connection Wiring Diagram 604D AR R1 C SAT R CFig. 45 Cont. - Ladder Wiring Diagram 604D-- --AFig. 46 - Connection Wiring Diagram 604D AA10199 Fig. 46 Cont. - Ladder Wiring Diagram 604D-- --A604D-- --A OA = Percent of Outdoor AirTable 16 - CO2 Sensor Standard Settings OPERATION604D-- --A TROUBLESHOOTING 604D-- --A2.Disconnect device at P and P1 3.Jumper P to P1 Fig. 47 - 604D--A 30-363 Phase with Economizer 604D-- --AA10226 Fig. 48 - 604D--A 42-603 Phase with Economizer 604D-- --ACatalog No II604D---07