Bryant R-22 II. ADD-ON Replacement Retrofit, III. Seacoast for AIR Conditioners only

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Refrigeration system contains refrigerant under pressure. Extreme caution should be observed when handling refrigerants. Wear safety glasses and gloves to prevent personal injury. During normal system operation, some components are hot and can cause burns. Rotating fan blades can cause personal injury. Appropriate safety considerations are posted throughout this manual where potentially dangerous techniques are addressed.

It is important to recognize safety information. This is the

safety-alert symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAU- TION. These words are used with the safety-alert symbol. DAN- GER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

WARNING: Improper installation, adjustment, alter- ation, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause personal injury, death, or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified in- staller or agency must use factory-authorized kits or accessories when modifying this product.

INTRODUCTION

This service manual enables a service technician to service, repair, and maintain a family of similar air conditioners and heat pumps. It covers standard single-speed products and 2–speed products only. For variable-speed products, refer to the respective service manuals.

INSTALLATION GUIDELINE

I. RESIDENTIAL NEW CONSTRUCTION

Specifications for this unit in the residential, new-construction market require the outdoor unit, indoor unit, refrigerant-tubing sets, metering device, and filter drier listed in Product Data Sheet (PDS). DO NOT DEVIATE FROM PDS. Consult unit Installation Instructions for detailed information.

II. ADD-ON REPLACEMENT (RETROFIT)

Specifications for this unit in the add-on replacement/retrofit market require change-out of outdoor unit, metering device, and all capillary-tube coils. Change-out of indoor coil is recommended. There can be no deviation.

1.If system is being replaced due to compressor electrical failure, assume acid is in system. If system is being replaced for any other reason, use approved acid test kit to determine acid level. If even low levels of acid are detected, install factory-approved, suction-line filter drier in addition to the factory-supplied, liquid-line filter drier. Remove the suction-line filter drier as soon as possible, with a maximum of 72 hr.

2.Drain oil from low points or traps in suction-line and evaporator if they were not replaced.

3.Change out indoor coil or verify existing coil is listed in the Product Data Sheets.

4.Replace outdoor unit.

5.Install liquid-line filter drier.

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6.If suction-line filter drier was installed for system clean up, operate system for 10 hr. Monitor pressure drop across drier. If pressure drop exceeds 3 psig, replace suction-line and liquid-line filter driers. Be sure to purge system with dry nitrogen and evacuate when replacing filter driers. Continue to monitor pressure drop across suction-line filter drier. After 10 hr of run time, remove suction-line filter drier and replace liquid-line filter drier. Never leave suction-line filter drier in system longer than 72 hr (actual time).

7.Charge system. (See unit information plate.)

III. SEACOAST (FOR AIR CONDITIONERS ONLY)

Installation of these units in seacoast locations requires the use of a coastal filter. (See section on cleaning.)

ACCESSORY DESCRIPTIONS

Refer to Table 1 for an Accessory Usage Guide for Air Condi- tioners and Heat Pumps. See Model-specific product literature for any kit part number. Refer to the appropriate section below for a description of each accessory and its use.

I. COMPRESSOR CRANKCASE HEATER

An electric heater which mounts to base of compressor to keep lubricant warm during off cycles. Improves compressor lubrication on restart and minimizes chance of refrigerant slugging and oil pumpout. The crankcase heater may or may not include a thermostat control. For units equipped with crankcase heaters, apply power for 24 hr before starting compressor.

II. EVAPORATOR FREEZE THERMOSTAT

An SPST temperature-activated switch stops unit operation when evaporator reaches freeze-up conditions.

III. WINTER START CONTROL

An SPST delay relay which bypasses the low-pressure switch for approximately 3 minutes to permit startup for cooling operation under low-load conditions.

IV. COMPRESSOR START ASSIST—PTC

Solid-state electrical device which gives a ″ soft″ boost to the compressor at each start.

V. COMPRESSOR START ASSIST CAPACITOR/RELAY

Start capacitor and start relay gives ″ hard″ boost to compressor motor at each start. Required with Liquid-Line Solenoid or hard-shutoff TXV for all equipment.

VI. LOW-AMBIENT CONTROLLER

Low-ambient controller is a cycle-control device activated by a temperature sensor mounted on a header tube of the outdoor coil. It is designed to cycle the outdoor fan motor in order to maintain condensing temperature within normal operating limits (approxi- mately 100°F high, and 60°F low). The control will maintain working head pressure at low-ambient temperatures down to 0°F when properly installed.

VII. MOTORMASTER™ CONTROL

A fan speed-control device activated by a temperature sensor. It is designed to control condenser fan-motor speed in response to the saturated, condensing temperature during operation in cooling mode only. For outdoor temperature down to -20°F, it maintains condensing temperature at 100°F ± 10 °F. Requires a ball-bearing fan motor.

VIII. LOW-AMBIENT PRESSURE SWITCH

A long-life pressure switch which is mounted to outdoor unit service valve. It is designed to cycle the outdoor fan motor in response to condenser pressure in cooling mode in order to maintain head pressure within normal operating limits (approxi- mately 100 psig to 225 psig). The control will maintain working head pressure at low-ambient temperatures down to 0°F when properly installed.

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Contents Table of Contents Safety ConsiderationsVIII. LOW-AMBIENT Pressure Switch II. ADD-ON Replacement RetrofitAccessory Descriptions III. Seacoast for AIR Conditioners onlyCoastal Filter II. Interconnecting Tubing SizingIX. Wind Baffle XI. Support FeetMatl 18 GA Steel Matl 20 GA SteelMedium Unit Size Unit HeightSmall Baffle LeftIII. Metering Device Sizing Wind Baffle Dimensions for Cube UnitsEstimated Percentage of Nominal COOLING-CAPACITY Losses Example IV. LIQUID-LINE Solenoid and Tubing CONFIGU- RationFitting Losses in Equivalent FT Calculation of Indoor Piston noCharging Information Common Piston SizesLIQUID-LINE Solenoid KIT Part Numbers VI -SPEED ApplicationsII. Serial Number Identification Positions 6 through 10-Serial NumberRemove TOP COVER-BEFORE 1/1/92 II. Remove FAN-MOTOR ASSEMBLY-BEFORE 1/1/92Cabinet III. Information PLATE-RELIANT ProductsVI. Remove FAN-MOTOR ASSEMBLY-AFTER 1/1/92 Electrical Aluminum Wire Basic Cabinet DesignsInformation Plate II. ContactorsIII. Capacitors Start Capacitors and PTC DevicesTemporary Capacitance Boost IV. Cycle ProtectorVI. TIME-DELAY Relay Crankcase HeaterVII. Pressure Switches LOW-PRESSURE SwitchVIII. Defrost Thermostats HIGH-PRESSURE SwitchLIQUID-LINE Pressure Switch IX. DEFROST-CONTROL BoardCES0110063 Defrost Control CES0110063 CES0130024Parameter Minimum Maximum Defrost Control SPEED-UP Timing SESPEED-UP FAN Motors Defrost Timer SettingsXI. Service Alarm Control Board OF2 CESO130076-00 XII. Outdoor ThermostatsFAN Position Aeroquiet System and Aeromax TOPService Alarm Wiring Connections XIII. Compressor PlugMechanical Failures XIV. LOW-VOLTAGE TerminalsReciprocating Compressor II. Electrical Failures III. System Cleanup After Burnout IV. Compressor Removal and ReplacementCompressor OIL Recharge Copeland Scroll Compressor FeaturesII. Troubleshooting III. Discharge ThermostatIV. Scroll COMPRESSOR, 3-PHASE Monitor Millennium Scroll Compressor FeaturesIII. Troubleshooting II. Compressor ProtectionCESO130075 IFR Indoor External Power Supply 24Cont Equip GND CAP OFM Logic Cont HPS LPSAmbient Temperature for HIGH- LOW-SPEED Operation Function Light Code and Display Location Compressor PTC Ranges III. Factory DefaultsFactory Defaults IV. Major ComponentsLED FUNCTION/MALFUNCTION Lights VI. TroubleshootingTWO-SPEED Compressor Winding Resistance AT 70F ± Refrigeration System Refrigeration Cycle II. Leak DetectionLow-Speed Windings Cooling Cycle 24V PIN Connection TroubleshootingIII. Brazing AllService Valves IV. Service ValvesVI. Reversing Valve Reliant Products Except 1992 ProductionReliant and Cube Products Produced Reversing Valve VII. THERMOSTATIC-EXPANSION Valves TXVVIII. THERMOSTATIC-EXPANSION Valve BI-FLOW TXV TXV Superheat Setting AT Outlet of Evaporator CoilInstallation TXV Type Product Usage Superheat Setting IX. Coil RemovalTXV in Cooling Mode XIII. System Charging XI. AccumulatorXII. Contaminant Removal XIV. Checking ChargeSuperheat Charging Method Required Vapor Temperature FSuperheat Charging Table Subcooling Charging MethodReliant Heat Pumps Care and MaintenanceReliant AIR Conditioners Required LIQUID-LINE Temperature Page AIR Conditioner Troubleshooting Chart Heat Pump TROUBLESHOOTING-COOLING Cycle Heat Pump TROUBLESHOOTING-HEATING Cycle
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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.
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