Bryant 604D--A Special Procedures for 208-V Operation, Control Voltage Connections

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604D-- -- A

Special Procedures for 208-V Operation

!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. With disconnect switch open, move black wire from transformer (3/16 in.) terminal marked 230 to terminal marked 200. This retaps transformer to primary voltage of 208 vac.

Control Voltage Connections

NOTE: Do not use any type of power-stealing thermostat. Unit control problems may result.

Use no. 18 American Wire Gage (AWG) color-coded, insulated (35°C minimum) wires to make the control voltage connections between the thermostat and the unit. If the thermostat is located more than 100 ft (30.5 m) from the unit (as measured along the control voltage wires), use no. 16 AWG color-coded, insulated (35° C minimum) wires.

Standard Connections

Locate the eight (nine on 3-phase) low voltage thermostat leads in 24 volt splice box. See Fig. 9 for connection diagram. Run the low-voltage leads from the thermostat, through the control wiring inlet hole grommet (Fig. 2 and 3), and into the low-voltage splice box. Provide a drip loop before running wires through panel. Secure and strain relief all wires so that they do not interfere with operation of unit. A gray wire is standard on 3-phase units for connection to an economizer.

If an accessory electric heater is installed, low voltage leads from heater must be connected to factory supplied control leads from Indoor Fan Board P4 connector. Factory wires are provided for electric heat staging W1 and W2 (W2 and W3 on IFB). If room thermostat has only one stage of supplemental heat, connect white and violet wires shown in Fig. 9 to second stage heat field wire.

Some electric heaters have four control wires (plus common wire). Consult unit wiring diagram and electric heater wiring diagram for additional details.

Transformer Protection

The transformer is of the energy-limiting type. It is set to withstand a 30-second overload or shorted secondary condition. If an overload or short is present, correct overload condition and check for blower fuse on Interface Fan Board. Replace fuse as required with correct size and rating.

Accessory Electric Heaters Installation

Electric heaters may be installed with the 604D--A units per instructions supplied with electric heater package. See unit rating plate for factory-approved electric heater kits.

TRAP

OUTLET

1-in. (25 mm) min.

2-in. (51 mm) min.

A09052

Fig. 10 - Condensate Trap

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Contents Table of Contents Safety ConsiderationsCheck Equipment Receiving and InstallationIntroduction Provide Unit SupportUnit Falling Hazard Rig and Place UnitProperty Damage Hazard 604D--A24-36 Unit Dimensions 604D--A42-60 Unit Dimensions CPRFCURB012A00 SizeCPRFCURB010A00 CPRFCURB013A00Corner Weights Small Cabinet Corner Weights Large Cabinet Select and Install DuctworkRigging/Lifting of Unit See Fig Supply and Return Duct Openings Personal Injury and Electrical Operation HazardHigh-Voltage Connections Install Electrical ConnectionsProvide for Condensate Disposal Unit Component Damage HazardControl Voltage Connections Special Procedures for 208-V OperationAccessory Electric Heaters Installation Standard ConnectionsPhysical Data Unit 604D--A Minimum Airflow for Reliable Electric Heater Operation CFM604D a Cont. Ladder Wiring Schematics 208/230-1-60 Connection Wiring Schematics 208/230-3-60 Cont. Ladder Wiring Schematics 208/230-3-60 Connection Wiring Diagram Cont. Ladder Wiring Diagram Check for Refrigerant Leaks Start-Up AdjustmentsSTART-UP Checking Cooling and Heating Control Operation604D--A Sequence of Operation Checking and Adjusting Refrigerant ChargeIndoor Airflow and Airflow Adjustments Unit Operation HazardContinuous Fan Operation Two Cooling Fan Speeds Set-up Dehumidification feature usedSingle Speed Cooling With Higher Electric Heat Speed Color Coding for Indoor Fan Motor LeadsTypical Heat Pump Operation, Cooling Mode Defrost Control MaintenanceAir Filter Outdoor Coil, Indoor Coil, and Condensate Drain Pan Outdoor Fan604D--A Wet Coil Pressure Drop IN. W.C A24-60 Series aFilter Pressure Drop Table IN. W.C Cooling Charging Table-Subcooling Electrical Controls and Wiring Refrigerant CircuitHigh-Pressure Switch Pressure SwitchesLoss of Charge Switch Copeland Scroll Compressor Puron RefrigerantSTART-UP Checklist TroubleshootingSystem Information Puronr R-410A Quick Reference Guide Troubleshooting Chart Symptom Cause RemedyPreliminary Information Model no TemperaturesRemove and Store in Job Files III. START-UP Electrical Supply Voltage Compressor AmpsInstallation Vertical Economizer Factory Installed Option GeneralAccessories Small ChassisFilter Part Number Part NumberHood Divider Removed Economizer Hood Assembly Large Chassis Horizontal Return Duct Cover Panel and Hood Divider RemovalLeft Hood Side Hood Assembly Temperature ConfigurationSupply AIR Temperature SAT SENSOR-The supply Economizer Standard Sensors11.7C 12.8C 14.4C 17.2C 20C 22.8C 25.6C Economizer Controller 604D-- -- a Economizer Wiring Diagram A10200 Cont. Ladder Wiring Diagram A10199 604D-- -- a 604D-- -- a CO2 Sensor Standard Settings Economizer Input/Output Logic CO2 Sensor Standard SettingsOperation Troubleshooting 604D--A 30-36 3 Phase with Economizer 604D--A 42-60 3 Phase with Economizer

604D--A specifications

The Bryant 604D--A is a remarkable heating and cooling unit designed for both efficiency and performance, making it an ideal choice for homeowners seeking optimal climate control solutions. Its impressive array of features, technologies, and characteristics sets it apart in the HVAC market.

One of the standout features of the Bryant 604D--A is its advanced two-stage cooling system. This design allows the unit to adjust its cooling output based on the current temperature and humidity levels, which ensures a comfortable indoor environment while optimizing energy consumption. This two-stage operation is particularly beneficial during transitional seasons when temperatures fluctuate, providing a quieter operation and increased efficiency.

The Bryant 604D--A incorporates high-efficiency compressor technology that maximizes cooling capability while minimizing energy usage. This energy-efficient operation is further enhanced by its excellent SEER (Seasonal Energy Efficiency Ratio) rating. By achieving a high SEER rating, the 604D--A not only promotes energy savings but also contributes to lower utility bills, making it an economically sound investment for homeowners.

Another key characteristic of the Bryant 604D--A is its durable construction. Built with quality materials, this unit is designed to withstand varying weather conditions, ensuring longevity and reliable performance over the years. Its robust design also minimizes vibrations and noise, making it a quieter option compared to many competing systems.

Smart technology integration is also a significant highlight of the Bryant 604D--A. It features wireless connectivity, allowing users to control their heating and cooling settings remotely through a smartphone app. This modern convenience enables homeowners to adjust their indoor climate on-the-go, enhancing user comfort and convenience.

Additionally, the Bryant 604D--A is equipped with an advanced filtration system that helps to improve indoor air quality. By capturing dust, pollen, and other particles, this filtration system ensures that the air circulating within the home remains clean and healthy.

In conclusion, the Bryant 604D--A is a high-performance HVAC unit that excels in energy efficiency, durability, and convenience. With its advanced technology, quiet operation, and user-friendly features, it stands as a premier choice for those looking to elevate their home comfort while maintaining cost-effectiveness and sustainability. Whether for new installations or as a replacement for an outdated system, the Bryant 604D--A is undoubtedly a leader in modern climate control solutions.
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