Bryant R-22 Heating Check Chart Procedure, All 286B units must be charged in high stage only

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SThe ODF fan delay defeat can be toggled by shorting the forced defrost pins for >15 seconds while in the standby mode (status LED on solid). The LED will start to flash when the toggle has taken place.

SStatus code 4 shows the fan delay defeat is active (no delay)

SStatus code 3 shows that it is not active (20 second delay)

The code will continue to be displayed until after the short is removed. Once the short is removed, there is a 5 second wait before the code is cancelled. The code that is flashing will finish before going back to sold LED. the control is shipped with the ODF fan delay defeat NOT active. the change in status is remembered until toggled to a new status. A power down / power up sequence will not reset the status. It may be necessary to do the toggle twice to cycle to the desired state of defeat.

Defrost Hold

in a non-communicating system, if the thermostat becomes satisfied (Y1 or Y1 and Y2) before the defrost cycle is terminated, the control will “hold” in defrost mode and finish the defrost cycle on the next call for heat.

With communicating Evolution Control, defrost hold is not needed in a communicating system because the User Interface will complete the defrost cycle before shutting down the system.

Forced Defrost

With non-communicating (non-Evolution) control, forced defrost can be initiated by manually shorting the 2-pin header labeled FORCED DEFROST (see Fig 43) on the control board for 5 seconds then releasing.

With communicating (Evolution) control, forced defrost is initiated with the User Interface.

On all models, during a Forced Defrost:

SIf coil temperature is at defrost temperature of 32_F, and outdoor air temperature is below 50_F, a full defrost sequence will occur.

SIf coil temperature or outdoor air temperature does not meet the above requirements, an abbreviated 30 second defrost will occur.

Quiet Shift

Quiet Shift is a field-selectable defrost mode which may eliminate occasional noise that could be heard at the start of the defrost cycle and restarting of the heating cycle. On models with a non-communicating system, this feature must be enabled by selecting the 3rd position of the 3-position dip switch. For models with communicating (Evolution) systems, it must be enabled at the User Interface. When activated, the following sequence of operation will occur. Reversing valve will energize and compressor will turn off for 30 seconds, then turn back on to complete defrost. At the end of the defrost cycle, the reversing valve de-energizes, compressor will turn off for another 30 seconds, and the fan will turn off for 40 seconds, before starting in the heating mode.

Liquid-Line Solenoid Accessory

In heat pump long-line applications, a liquid-line solenoid is required to control refrigerant migration in the heating mode. The solenoid should be installed near the outdoor unit with the arrow facing the outdoor unit. This is the direction of flow control. See application manual for long-line application details.

Accessory Liquid Solenoid with Evolution Communicating Control:

When using the Evolution Control, the liquid-line solenoid output is provided at the Y1 connection. Connect the solenoid as shown in the wiring label diagram. This is a 24vac output that is energized whenever the compressor is energized. It closes, in the compressor

off mode, to prevent refrigerant migration into the unit through the liquid-line.

On Models with Accessory Liquid Solenoid Using a Non-Communicating Thermostat:

The liquid solenoid is connect to the Y1 and C terminal connections. The liquid solenoid closes, in the compressor off mode, to prevent refrigerant migration into the unit through the liquid-line.

CHECK CHARGE

All 286B units must be charged in high stage only.

Factory charge amount and desired subcooling are shown on unit rating plate. Charging method is shown on information plate inside unit. To properly check or adjust charge, conditions must be favorable for subcooling charging. Favorable conditions exist when the outdoor temperature is between 70_F and 100_F (21.11_C and 37.78_C), and the indoor temperature is between 70_F and 80_F (21.11_C and 26.67_C). Follow the procedure below:

Unit is factory charged for 15ft (4.57 m) of lineset. Adjust charge by adding or removing 0.6 oz/ft of 3/8 liquid line above or below 15ft (4.57 m) respectively.

For standard refrigerant line lengths (80 ft/24.38 m or less), allow system to operate in cooling mode at least 15 minutes. If conditions are favorable, check system charge by subcooling method. If any adjustment is necessary, adjust charge slowly and allow system to operate for 15 minutes to stabilize before declaring a properly charged system.

If the indoor temperature is above 80_F (26.67_C), and the outdoor temperature is in the favorable range, adjust system charge by weight based on line length and allow the indoor temperature to drop to 80_F (26.67_C) before attempting to check system charge by subcooling method as described above.

If the indoor temperature is below 70_F (21.11_C), or the outdoor temperature is not in the favorable range, adjust charge for line set length above or below 15ft (4.57 m) only. Charge level should then be appropriate for the system to achieve rated capacity. The charge level could then be checked at another time when the both indoor and outdoor temperatures are in a more favorable range.

NOTE: If line length is beyond 80 ft (24.38 m) or greater than 20 ft (6.10 m) vertical separation, See Long Line Guideline for special charging requirements.

Heating Check Chart Procedure

To check system operation during heating cycle, refer to the Heat Pump Charging Instructions label on outdoor unit. This chart indicates whether a correct relationship exists between system operating pressure and air temperature entering indoor and outdoor units. If pressure and temperature do not match on chart, system refrigerant charge may not be correct. Do not use chart to adjust refrigerant charge.

NOTE: In heating mode, check refrigerant charge only when pressures are stable. If in doubt, remove charge and weigh in correct refrigerant charge.

NOTE: When charging is necessary during heating season, charge must be weighed in accordance with unit rating plate, ±0.6 oz./ft. of 3/8-in. liquid-line above or below 15 ft., respectively.

EXAMPLE:

To calculate additional charge required for a 25-ft. line set:

25 ft. - 15 ft. = 10 ft. X 0.6 oz./ft. = 6 oz. of additional charge.

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Contents Table of Contents Application GuidelineAIR Conditioner and Heat Pump Model Number Nomenclature Table of Contents TWO Stage NON-COMMUNICATINGTWO Stage Communicating Serial Number NomenclatureInstallation Guideline Safety ConsiderationsIntroduction Required Field-Installed Accessories for Air Conditioners AccessoriesRequired Field-Installed Accessories for Heat Pumps Accessory Descriptions Base / Mid-Tier / Deluxe 4-sided Baffle Assembly LOW-AMBIENT Cooling GuidelineDeluxe 3-sided Baffle Assembly and Dimensions Long Line Guideline Cabinet AssemblyBasic Cabinet Designs Access Compressor Or Other Internal Cabinet Components Legacy RNC and Legacy Line Control Box Identification Labeling Figure LabelsContactor Aluminum WireElectrical CapacitorCrankcase Heater Time-Delay RelayCycle Protector Pressure Switches Personal Injury HazardDefrost Thermostat Defrost Control BoardIf defrost thermostat is stuck closed Troubleshooting HK32EA001 If outdoor unit will not runDefrost Speedup If defrost thermostat is stuck openCooling Five-Minute Compressor DelayQuiet Shift HeatingCompressor Plug Troubleshooting HK32EA003Fan Motor Low-Voltage TerminalsLocked Rotor Compressor FailuresMechanical Failures Runs, Does Not PumpNoisy Compressor Split Post Grommet part number KA75UG100Electrical Failures Single-Phase MotorsUnit Personal Injury Hazard Refrigerant Refrigeration SystemCompressor Oil Brazing Synthetic Roof Precautionary ProcedureServicing Systems on Roofs With Synthetic Materials Oil ChargingPumpdown Procedure Service Valves and PumpdownPersonal Injury and Unit Damage Hazard Heating Piston AccuRaterr Heat Pumps Only AccuRaterr Components Used in R-22 Heat PumpsReversing Valve Reversing Valve Heating Mode, Solenoid De-EnergizedLiquid Line Filter Drier Install Liquid-line Filter Drier Indoor ACSuction Line Filter Drier Accumulator AccumulatorTXV Operation Install TXVThermostatic Expansion Valve TXV Unit Operation HazardReplacing TXV on Indoor Coil post-2006 Make Piping ConnectionsReplacing TXV on an Indoor Coil pre-2006 Personal Injury and Environmental HazardCoil Removal Refrigeration System RepairLeak Detection Fire HazardCompressor Removal and Replacement System Clean-Up After BurnoutEvacuation Check ChargeDeep Vacuum Method Low Superheat with Normal or Low Suction Pressure Troubleshooting with SuperheatBasic Diagnostics Low Superheat with High Suction PressureHunting Superheat High Superheat with Normal or High Suction PressurePseudo Evaporator Superheat Instructions Puron System Suction Pressure Drop Example22 System Suction Pressure Drop PuronrRefrigerant Pressure Temperature Chart Psig22 Refrigerant Pressure Temperature Relationship PsigPuron Subcooling Chart Liquid Line Temperature F Liq Press Subcooling F PsigPuron Superheat Chart Superheat F Psig22 Subcooling Chart Liquid Line Temperature F PT F Subcooling F Pres Psig22 Superheat Chart Model Plug TWO-STAGEApplication Guidelines Model Plug InformationDefrost General InformationLow Ambient Cooling Airflow Selection for 315AAV/355AAV FurnacesForced Defrost Liquid-Line Solenoid AccessoryDefrost Hold All 286A units must be charged in high stage onlyUtility Interface With Evolution Control One Minute Stage Change Time Delay on 286ANA/187ANA ModelsCooling and Heating Operation Compressor Operation on 286ANA/187ANA ModelsECM Fan Motor Troubleshooting Outdoor Fan Motor OperationMuffler, Accumulator, Reversing Valve RVS Time DelaysThermistors Control BOX Troubleshooting Compressor Voltage Sensing 230V Line Power Disconnect Detection230v Brown-Out Protection Defeated Contactor Shorted DetectionFailed Thermistor Default Operation Unloader Test ProcedureTemperature Thermistors Thermistor Sensor ComparisonTroubleshooting Status CodesEdge Thermidistat Models T6-PRH-01 or T6-NRH-01 TWO-STAGE 286B/289B/180B/187B General Information Heating Check Chart Procedure All 286B units must be charged in high stage onlyCompressor Operation on 289B/180B Models Low Stage High Stage Low & High Model Control Box Incoming PowerTroubleshooting 187B & 286B Start Circuit Contactor And CapacitorTroubleshooting HK38EA015 circuit board 286B Models Compressor Thermal Cutout 289B Compressor Thermal CutoutOutdoor Coil Thermistor OCT Attachment Status Codes Single Stage Furnace with 2-Stage Air Conditioner Airflow Selections ECM Furnaces TWO Stage NON-COMMUNICATING 127A/226AOperating Ambient Airflow Selection for FV4C Fan Coils non-communicatingCompressor Operation System Function and Sequence of OperationDefrost Speedup Check Charge Airflow Selections for ECM Furnaces non communicating TWO Stage Communicating 167A/266AIndoor Thermostat Control Options Evolution Controlled Low Ambient Cooling Defrost HoldMajor Components Outdoor Fan Motor Operation Communication and Status Function LightsFor Evolution Control only, Green communications Comm Light 2230V Brown-Out Protection Defeated No 230V at Compressor Contactor Thermistor CurveOutdoor Coil Thermistor OCT Attachment 167A / 266A Troubleshooting Status CodesCare and Maintenance Final Check-Out Puronr R-410A Refrigerant Quick Reference GuideAIR Conditioner Troubleshooting Chart Heat Pump Troubleshooting Heating Cycle Heat Pump Troubleshooting Cooling Cycle TWO-STAGE 286A/288A 180A/187A Index of TablesDescription Table # TWO-STAGE 286B/288B 180B/187BCatalog No. SM01---6
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R-22 specifications

The Bryant R-22 stands out in the landscape of residential heating and cooling systems with its combination of efficiency, durability, and modern technology. Designed primarily for homeowners seeking comfortable climate control solutions, the R-22 model delivers consistent performance throughout varying seasonal extremes.

One of the main features of the Bryant R-22 is its high energy efficiency. Rated with a SEER (Seasonal Energy Efficiency Ratio) that meets or exceeds industry standards, this air conditioning unit is designed to reduce energy consumption while providing optimal cooling. This not only helps in lowering monthly utility bills but also promotes environmentally responsible usage.

Another notable characteristic is the unit's durability. Constructed with a robust cabinet and high-quality components, the R-22 is built to withstand the rigors of daily use, with protective features that enhance its longevity. The cabinet comes with a powder-coated finish that resists corrosion and harsh weather conditions, ensuring that the unit stays functional and aesthetically pleasing for years.

The Bryant R-22 also incorporates advanced technology to improve user experience. One such innovation is the SmartSet technology, which allows homeowners to program their unit to optimize comfort levels according to their specific needs. This programmable capability enhances energy savings and ensures that the home remains at the desired temperature when residents are present.

Moreover, the unit features a Quiet Operating System that significantly reduces noise levels, making it suitable for residential areas where noise might be a concern. The design minimizes vibrations and optimizes airflow, creating a comfortable environment without disruptive sounds.

For added convenience, the Bryant R-22 is compatible with various thermostat options, including Wi-Fi-enabled models. This allows users to control their home's climate from anywhere using a smartphone app, facilitating effortless adjustments and monitoring of energy usage.

Finally, the Bryant R-22 is backed by a solid warranty, providing peace of mind for homeowners. This commitment to quality and customer satisfaction is a testament to Bryant’s dedication to producing reliable and efficient HVAC solutions. Overall, the Bryant R-22 is an exemplary choice for those looking to enhance their home comfort with the latest in HVAC technology.