Bryant 604D--A installation instructions 11.7C 12.8C 14.4C 17.2C 20C 22.8C 25.6C

Page 40

604D-- -- A

LOW TEMPERATURE COMPRESSOR LOCKOUT SWITCH—The Economizer is equipped with a low ambient temperature lockout switch located in the outdoor airstream which is used to lock out the compressors below a 42_F (5.6_C) ambient temperature.

Economizer Control ModesDetermine the Economizer control mode before set up of the control. Some modes of operation may require different sensors. Refer to Table 11. The Economizer is supplied from the factory with a supply air temperature sensor, a low temperature compressor lockout switch, and an outdoor air temperature sensor. This allows for operation of the Economizer with outdoor air dry bulb changeover control. Additional accessories can be added to allow for different types of changeover control and operation of the Economizer and unit.

OUTDOOR DRY BULB CHANGEOVER— The standard controller is shipped from the factory configured for outdoor dry bulb changeover control. The outdoor air and supply air temperature sensors are included as standard.

For this control mode, the outdoor temperature is compared to a selectable set point on the sensor. See Fig. 39. If the outdoor-air temperature is above the set point, the Economizer will adjust the outdoor air dampers to minimum position. If the outdoor-air temperature is below the set point, the position of the outdoor-air dampers will be controlled to provide free cooling using outdoor air. When in this mode, the LED next to the free cooling set point potentiometer will be on. The changeover temperature set point is set using the switches on the sensor. See Fig. 39 for the corresponding temperature changeover values.

In this mode of operation, the outdoor-air temperature is compared to the return-air temperature and the lower temperature airstream is used for cooling. When using this mode of changeover control, turn the free cooling/enthalpy set point potentiometer fully clockwise to the D setting. See Fig. 38 and Fig. 43.

EXHAUST FAN

SETPOINT

LED LIGHTS WHEN

EXHAUST CONTACT

IS MADE

MINIMUM DAMPER

POSITION SETTING

MAXIMUM DAMPER DEMAND

CONTROL VENTILATION

SETPOINT

LED LIGHTS WHEN

DEMAND CONTROL

VENTILATION INPUT

IS ABOVE SETPOINT

DEMAND CONTROL

VENTILATION SETPOINT

LED LIGHTS WHEN

OUTDOOR AIR IS

SUITABLE FOR FREE

COOLING

ENTHALPY

CHANGEOVER SETPOINT

A09708

Fig. 38 - Economizer Controller Potentiometer and LED

Locations

(8.9°C)

(11.7°C)

(12.8°C)

(14.4°C)

(17.2°C)

(20°C)

(22.8°C)

(25.6°C)

A10134

Fig. 39 - Outdoor Air Temperature Changeover Set Points

ECONOMIZER

RETURN AIR

SENSOR

RETURN DUCT (FIELD-PROVIDED)

A09710

Fig. 40 - Enthalpy Sensor Mounting Location

40

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Contents Table of Contents Safety ConsiderationsReceiving and Installation IntroductionCheck Equipment Provide Unit SupportUnit Falling Hazard Rig and Place UnitProperty Damage Hazard 604D--A24-36 Unit Dimensions 604D--A42-60 Unit Dimensions Size CPRFCURB010A00CPRFCURB012A00 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 HazardInstall Electrical Connections Provide for Condensate DisposalHigh-Voltage Connections Unit Component Damage HazardSpecial Procedures for 208-V Operation Accessory Electric Heaters InstallationControl Voltage Connections 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 Start-Up Adjustments START-UPCheck for Refrigerant Leaks Checking Cooling and Heating Control OperationChecking and Adjusting Refrigerant Charge Indoor Airflow and Airflow Adjustments604D--A Sequence of Operation Unit Operation HazardTwo Cooling Fan Speeds Set-up Dehumidification feature used Single Speed Cooling With Higher Electric Heat SpeedContinuous Fan Operation 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 CircuitPressure Switches Loss of Charge SwitchHigh-Pressure Switch Copeland Scroll Compressor Puron RefrigerantSTART-UP Checklist TroubleshootingSystem Information Puronr R-410A Quick Reference Guide Troubleshooting Chart Symptom Cause RemedyTemperatures Remove and Store in Job FilesPreliminary Information Model no III. START-UP Electrical Supply Voltage Compressor AmpsVertical Economizer Factory Installed Option General AccessoriesInstallation 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 Configuration Supply AIR Temperature SAT SENSOR-The supplyTemperature 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.