Table of Contents
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Residential Air Conditioners and Heat Pumps
Using R-22 and Puron® Refrigerant
Application Guideline and Service Manual
UNIT IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION GUIDELINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Residential New Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Add-On Replacement (Retrofit) - R22 to Puron . . . . . . . . . . . . . . 4
Seacoast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ACCESSORY DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
LOW-AMBIENT COOLING GUIDELINE . . . . . . . . . . . . . . . . . . . 7
LONG LINE GUIDELINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
CABINET ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Basic Cabinet Designs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Labeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Aluminum Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Contactor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cycle Protector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Time-Delay Relay (TDR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pressure Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Defrost Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Defrost Control Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
HK32EA001/007 DEFROST CONTROL. . . . . . . . . . . . . . . . . . 15
HK32EA009 DEFROST CONTROL . . . . . . . . . . . . . . . . . . . . . 17
HK32EA003 / 008 DEFROST CONTROL. . . . . . . . . . . . . . . . . 17
Troubleshooting (HK32EA003/008) . . . . . . . . . . . . . . . . . . . . . 18
HK32EA008 DEFROST CONTROL . . . . . . . . . . . . . . . . . . . . . 18
Quiet Shift-2 (non-communicating). . . . . . . . . . . . . . . . . . . . . . . 18
HK32EA010 DEFROST CONTROL . . . . . . . . . . . . . . . . . . . . . 18
HK32EA011 DEFROST CONTROL . . . . . . . . . . . . . . . . . . . . . 18
Outdoor Fan Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ECM Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
PSC Fan Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Compressor Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Low-Voltage Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
COPELAND SCROLL COMPRESSOR. . . . . . . . . . . . . . . . . . . 20
LG SCROLL COMPRESSOR. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Characteristics of the LG Scroll Compressor: . . . . . . . . . . . . . . . 21
COMPRESSOR TROUBLESHOOTING . . . . . . . . . . . . . . . . . . 22
Compressor Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Mechanical Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Noisy Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Electrical Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
REFRIGERATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Servicing Systems on Roofs With Synthetic Materials . . . . . . . . 25
Brazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Aluminum Brazing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Service Valves and Pumpdown . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Liquid Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Suction Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Accumulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Thermostatic Expansion Valve (TXV) . . . . . . . . . . . . . . . . . . . . 31
Make Piping Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
REFRIGERATION SYSTEM REPAIR. . . . . . . . . . . . . . . . . . . . . . 33
Leak Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Coil Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Aluminum Coil Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Compressor Removal and Replacement . . . . . . . . . . . . . . . . . . . 35
System Clean-Up After Burnout . . . . . . . . . . . . . . . . . . . . . . . . . 35
Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Check Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
TROUBLESHOOTING with SUPERHEAT . . . . . . . . . . . . . . . . . . 37
quence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Sequence of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
DEFROST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
QUIET SHIFT-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
LIQUID LINE SOLENOID ACCESSORY . . . . . . . . . . . . . . . . 49
MAJOR COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Systems Communication Failure . . . . . . . . . . . . . . . . . . . . . . . . . 49
Pressure Switch Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Control Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
24V Brown Out Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Compressor Voltage Sensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
or Loss of 230V Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Contactor Shorted Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
No 230V at Compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Temperature Thermistors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Thermistor Sensor Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Failed Thermistor Default Operation. . . . . . . . . . . . . . . . . . . . . . 50
TWO-STAGE 286B/289B 180B/187B . . . . . . . . . . . . . . . . . . . . . . 52
Application Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Model Plug. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
nicating (Non-Evolution) Thermostats . . . . . . . . . . . . . . . . . . . . 53
Airflow Selection for FV4 Fan Coils for 180B, 187B, 286B, 289B Us-
ing Non-Communicating (Non-Evolution) Thermostats. . . . . . . 53
GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Low Ambient Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Quiet Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
(part # HK38EA016, HK38EA022, HK38EA023) . . . . . . . . . . . 54
Liquid-Line Solenoid Accessory . . . . . . . . . . . . . . . . . . . . . . . . . 54
Check Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Heating Check Chart Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 54
55
Cooling and Heating Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 55
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Table of Contents
Troubleshooting
Related Manuals for Bryant Base Series
Summary of Contents for Bryant Base Series
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Page 1: Table Of Contents
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant Application Guideline and Service Manual UNIT IDENTIFICATION ....... . . 3 Liquid Line Filter Drier . - Page 2 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Communication and Status Function Lights For Evolution Control only, Green communications (COMM) Light 55 Utility Interface With Evolution Control ....55 Compressor Operation .
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Page 3: Unit Identification
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual UNIT IDENTIFICATION Troubleshooting Charts for Air Conditioners and Heat Pumps are This section explains how to obtain the model and serial number from provided in the appendix at back of this manual. They enable the service unit rating plate. -
Page 4: Safety Considerations
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual SAFETY CONSIDERATIONS INSTALLATION GUIDELINE Residential New Construction Installation, service, and repair of these units should be attempted only by trained service technicians familiar with standard service instruction Specifications for these units in the residential new construction market and training material. -
Page 5: Accessories
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Accessories Table 1 – Required Field-Installed Accessories for Air Conditioners REQUIRED FOR REQUIRED FOR LOW-AMBIENT REQUIRED FOR SEA COAST ACCESSORY COOLING APPLICATIONS LONG LINE APPLICATIONS (Below 55°F/12.8°C) APPLICATIONS... -
Page 6: Accessory Descriptions
Suggested for all commercial applications. 5. Outdoor Air Temperature Sensor Designed for use with Bryant Thermostats listed in this publication. This device enables the thermostat to display the outdoor temperature. This device is required to enable special thermostat features such as auxiliary heat lock out. -
Page 7: Low-Ambient Cooling Guideline
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual LOW-AMBIENT COOLING GUIDELINE ambients below 55°F/12.7°C. Refer to Fig. 1 wind baffle construction details for Base through Deluxe models. First production The minimum operating temperature for these units in cooling mode is of Preferred units are capable of low ambient cooling only with pressure 55°F/12.7°C outdoor ambient without additional accessories. -
Page 8: Long Line Guideline
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual LONG LINE GUIDELINE CABINET ASSEMBLY Basic Cabinet Designs Refer to Residential Piping and Long Line Guideline for air conditioner and heat pump systems using Puron refrigerant or Long Line Guideline Certain maintenance routines and repairs require removal of the cabinet for R-22 Air Conditioners and Heat Pumps. -
Page 9: Access Compressor Or Other Internal Cabinet Components
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Access Compressor Or Other Internal Cabinet Components Remove Fan Motor Assembly - Mid-Tier / Deluxe NOTE: It is not necessary to remove the top cover to gain access. Removing the top cover may cause grill panels, corner posts, louvers or 1. - Page 10 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual A210700 A210701 Fig. 3 – Legacy Series Control Box Identification Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Page 11: Labeling
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Labeling Mid-Tier / Deluxe A210702 Entry A210703 Fig. 4 – Label Locations Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. -
Page 12: Electrical
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual ELECTRICAL 4. With high-voltage power off and contacts pulled in, check for continuity across contacts with ohmmeter. A very low or 0 WARNING resistance should be read. Higher readings could indicate burned or pitted contacts which may cause future failures. -
Page 13: Cycle Protector
Cycle Protector Bryant thermostats have anti-cycle protection built in to protect the compressor. Should a non-Bryant stat be utilized, it is recommended to add a cycle protector to the system. Solid-state cycle protector protects A170062 unit compressor by preventing short cycling. -
Page 14: Time-Delay Relay (Tdr)
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Time-Delay Relay (TDR) High-Pressure Switch (AC & HP) The high-pressure switch is located in liquid line and protects against The TDR is a solid-state control, recycle delay timer which keeps indoor excessive condenser coil pressure. -
Page 15: Defrost Thermostat
When the cycle is complete, R-Y is turned off and compressor and and to the contactor. If 24 volts is present on the Y spade terminal, outdoor fan should stop. With Bryant thermostats, the O terminal and the contactor is not closed, check voltage on contactor coil. If remains energized in the cooling mode. -
Page 16: Defrost Control Speed-Up Timing Sequence
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Defrost Speedup (KH32EA001/007) 5. Disconnect outdoor fan motor lead from OF2. Tape lead to prevent grounding. To test the defrost function on these units, speed up pins are provided on 6. -
Page 17: Hk32Ea009 Defrost Control
When the cycle is complete, R-Y is turned off and compressor and ensure proper defrost operation. outdoor fan should stop. When using Bryant thermostats, the reversing NOTE: With timing cycle set at 90 minutes, unit initiates defrost within valve remains energized in the cooling mode until the thermostat is approximately 21 sec. -
Page 18: Troubleshooting (Hk32Ea003/008)
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Troubleshooting (HK32EA003/008) HK32EA008 DEFROST CONTROL If outdoor unit will not run: The HK32EA008 defrost control is used in most non-communicating Preferred Series heat pumps with Puron refrigerant and has all the same 1. - Page 19 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual A05378A A170235 Fig. 11 – Defrost Control HK32EA008 Fig. 12 – Defrost Control HK32EA009 A05378A A170130 Fig. 14 – Defrost Control HK32EA011 Fig. 13 – Defrost Control HK32EA010 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Page 20: Outdoor Fan Motors
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Outdoor Fan Motors are not positioned in slot, assuring correct electrical connection at the compressor. The plug can be removed by simultaneously pulling while ECM Fan Motor “rocking“... -
Page 21: Lg Scroll Compressor
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual The compressor is equipped with an internal pressure relief port. The If replacement is deemed necessary, perform the following to replace pressure relief port is a safety device, designed to protect against sensor: extreme high pressure. -
Page 22: Compressor Troubleshooting
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual COMPRESSOR TROUBLESHOOTING 3. Expose the sensor holder Compressor Failures Compressor failures are classified in 2 broad failure categories; mechanical and electrical. Both types are discussed below. Mechanical Failures A compressor is a mechanical pump driven by an electric motor contained in a welded or hermetic shell. -
Page 23: Noisy Compressor
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Noisy Compressor 10. When a heat pump switches into and out of defrost, a ”swooshing” noise is expected due to the rapid pressure change within the Noise may be caused by a variety of internal and external factors. -
Page 24: Electrical Failures
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual (EXAMPLE) TO DETERMINE INTERNAL CONNECTIONS OF SINGLE- PHASE MOTORS (C,S,R) EXCEPT SHADED-POLE DEDUCTION: POWER OFF! (GREATEST RESISTANCE) RUN WINDING (R) 5.8 (OHM) START WINDING (S) OHMMETER (SMALLEST RESISTANCE) IS COMMON (C) -
Page 25: Refrigeration System
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual REFRIGERATION SYSTEM Ground Circuit To determine if a wire has broken or come in direct contact with shell, Refrigerant causing a direct short to ground, follow these steps: WARNING 1. -
Page 26: Brazing
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Brazing 2. Wire brush to remove oxides from area 3. Flux area if required with the CX-60 flux. Cored wire alloys will This section on brazing is not intended to teach a technician how to not need fluxing. - Page 27 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Heating Piston (AccuRater®) - Heat Pumps Only line-set connection ports. All heat pumps that are equipped with an AccuRater piston heating metering device are shipped with an adapter AccuRater pistons are used to meter refrigerant for heat pump heating stub tube.
- Page 28 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Reversing Valve If valve is defective: In heat pumps, changeover between heating and cooling modes is accomplished with a valve that reverses flow of refrigerant between the 1.
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Page 29: Liquid Line Filter Drier
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Liquid Line Filter Drier Refer to Fig. 24 and install filter drier as follows: 1. Braze 5-in. liquid tube to the indoor coil. Filter driers are specifically designed for R-22 or Puron refrigerant. Only operate with the appropriate drier using factory authorized 2. -
Page 30: Accumulator
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Accumulator 3. Break vacuum with dry nitrogen. Do not exceed 5 psig. NOTE: Coil may be removed for access to accumulator. Refer to The accumulator is specifically designed to operate with Puron or R22 appropriate sections of Service Manual for instructions. -
Page 31: Thermostatic Expansion Valve (Txv)
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Thermostatic Expansion Valve (TXV) CAUTION All (post-2006) furnace coils, most fan coils and a few heat pumps have a factory installed thermostatic expansion valve (TXV). The TXV will EQUIPMENT DAMAGE HAZARD be a bi-flow, hard-shutoff with an external equalizer and a balance port Failure to follow this caution may result in equipment damage or... -
Page 32: Make Piping Connections
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Make Piping Connections 12. Sweat inlet of TXV, marked “IN” to liquid line. Avoid excessive heat which could damage valve. WARNING 13. Install vapor elbow with equalizer adapter to vapor line of line set and vapor connection to indoor coil. -
Page 33: Refrigeration System Repair
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual REFRIGERATION SYSTEM REPAIR You may use an electronic leak detector designed for specific refrigerant to check for leaks (See Fig. 29). This unquestionably is the most efficient Leak Detection and easiest method for checking leaks. -
Page 34: Aluminum Coil Removal
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Aluminum Coil Removal For all aluminum coils, the coil has two or four (depending on size of unit) fin isolators on the top of the coil as shown in Fig. -
Page 35: Compressor Removal And Replacement
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Compressor Removal and Replacement tubing connected to compressor. An acid test of compressor oil will be positive. Follow these additional steps: Once it is determined that compressor has failed and the reason 1. -
Page 36: Check Charge
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Check Charge Triple Evacuation Method The triple evacuation method should be used when vacuum pump is only (See Charging Table 11 & Table capable of pumping down to 28 in. of mercury vacuum and system does Factory charge amount and desired subcooling are shown on unit rating not contain any liquid water. -
Page 37: Troubleshooting With Superheat
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual TROUBLESHOOTING with SUPERHEAT This troubleshooting routine was developed to diagnose cooling 4. Check for even temperature distribution at outlet of each circuit of problems using superheat in TXV systems. It is effective on heat pumps evaporator in cooling mode as well as air conditioners. - Page 38 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Hunting Superheat • Suction line pressure at the outdoor unit (psig). • Outdoor nominal unit size (btuh). NOTE: Hunting is when the valve superheat swings more than 10°F •...
- Page 39 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Table 6 – Puron System Suction Pressure Drop Puron Suction Line Pressure Drop (psig) Nominal Suction Line Pressure Suction Size Drop Velocity Total Equivalent Line Length (ft) (Btuh) (in.) (psi/100 ft)
- Page 40 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Table 7 – R-22 System Suction Pressure Drop R-22 Suction Line Pressure Drop (psig) Nominal Line Pressure Suction Size Drop Velocity Total Equivalent Line Length (ft) (Btuh) (in.) (psi/100 ft)
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Page 41: Puron Refrigerant Pressure Temperature Chart
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Table 8 – Puron Refrigerant Pressure Temperature Chart PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F -38.2 39.9 76.9 102.9 123.3 140.2 -35.3... - Page 42 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Table 9 – R-22 Refrigerant Pressure Temperature Relationship PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F -25.9 41.7 76.2 101.1 120.9...
- Page 43 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Table 10 – Puron Subcooling Chart Liquid Line Temperature (°F) Liq Press Subcooling (°F) PSIG (°F) Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 44 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Table 11 – Puron Superheat Chart Vapor Line Temperature (°F) Vap Press P - T Superheat (°F) (PSIG) (°F) Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 45 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Table 12 – R-22 Subcooling Chart R-22 Liquid Line Temperature (°F) Liquid Subcooling (°F) Press P-T (°F) (PSIG) Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 46 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Table 13 – R-22 Superheat Chart R-22 Vapor Line Temperature (°F) Superheat (°F) Vap Press P - T (PSIG) (°F) Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Page 47: Single-Stage Communicating Heat Pump System Functions And Sequence Of Operation
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Single-Stage Communicating Heat Pump Outdoor Fan Motor Operation System Functions and Sequence of Operation The outdoor unit control energizes outdoor fan any time the compressor is operating (except defrost and intermittently during low ambient The outdoor unit control system has special functions. -
Page 48: Defrost
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Utility Interface to be changed. A crankcase heater must be installed. See Product Data for part numbers on appropriate unit size and series units. With Evolution Control DEFROST The input labeled UTIL is active only when a communicating Evolution... -
Page 49: Liquid Line Solenoid Accessory
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual TROUBLESHOOTING seconds. During this 70 second compressor off time, the reversing valve will be energized. Once the 70 second compressor off time has been Systems Communication Failure reached, the compressor will be energized then the outdoor fan will be If communication between User Interface (UI), and condensing unit is... -
Page 50: Contactor Shorted Detection
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Contactor Shorted Detection Thermistor Sensor Comparison If there is compressor voltage sensed when there is no demand for The control continuously monitors and compares the outdoor air compressor operation, the contactor may be stuck closed. - Page 51 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Table 14 – Status Codes AMBER LED OPERATION FAULT POSSIBLE CAUSE AND ACTION FLASH CODE Standby – no call for unit None On solid, no flash Normal operation operation Cool/Heat Operation...
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Page 52: Two-Stage 286B/289B 180B/187B
TWO-STAGE 286B/289B 180B/187B Application Guidelines Model Plug Bryant designed and tested the two-stage air conditioner and heat pump Each control board contains a model plug. The correct model plug must products with Puron refrigerant to operate at a minimum outdoor be installed in order for the system to operate properly. -
Page 53: Airflow Selections For 187B / 286B / 180B /289B Using Non-Communicating (Non-Evolution) Thermostats
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Airflow Selections for 187B / 286B / 180B /289B Defrost Using Non-Communicating (Non-Evolution) This control offers 5 possible defrost interval times: 30, 60, 90, 120 Thermostats minutes, or AUTO. -
Page 54: Quiet Shift
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Defrost Hold Accessory Liquid Solenoid with Evolution Communicating Control: In a non-communicating system, if the thermostat becomes satisfied (Y1 or Y1 and Y2) before the defrost cycle is terminated, the control will When using the Evolution Control, the liquid-line solenoid output is “hold”... -
Page 55: System Functions And Sequence Of Operation (286B/89B/180B/187B)
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual System Functions and Sequence of The opening and closing of the bypass port is controlled by an internal electrically operated solenoid. Operation (286B/89B/180B/187B) The modulated scroll uses a single step of unloading to go from full The outdoor unit control system has special functions. -
Page 56: Time Delays
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual ECM Fan Motor Troubleshooting The PWM is called a 20 percent duty cycle signal. If the on time is increased to 4 sec of the 5 sec period, the PWM is called an 80 percent If the outdoor fan motor fails to start and run: duty cycle. -
Page 57: Pressure Switches
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Pressure Switches Control Box Contactor And Capacitor The Puron two-stage air conditioner contains two pressure switches to prevent system operation if the pressures get excessively high or low. Removal of the control box cover exposes the control components. -
Page 58: Troubleshooting
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual A12261 A12260 Fig. 44 – 2-Stage Control Board TROUBLESHOOTING Pressure Switch Protection Troubleshooting circuit board The outdoor unit is equipped with high and low-pressure switches. If the control senses the opening of a high or low-pressure switch, it will HK38EA016, 022, 023, 026 respond as follows:... -
Page 59: 230V Brown-Out Protection Defeated
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual 230v Brown-Out Protection Defeated Low or High Contactor Open/No 230V at Compressor Contractor The brownout feature can be defeated if needed for severe noisy power conditions. -
Page 60: Temperature Thermistors
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Temperature Thermistors If the sensors are out of range, the control will flash the appropriate fault code as shown in Table Thermistors are electronic devices which sense temperature. As the The thermistor comparison is not performed during low ambient cooling temperature increases, the resistance decreases. -
Page 61: Troubleshooting
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Table 17 – Two-Stage Compressor Resistances (Winding Resistance at 70_F±20_) Winding Start (S-C) 1.64 1.52 1.86 1.63 Run (R-C) 1.30 0.88 0.52 0.39 Status Codes The short flash is 0.25 seconds ON and the long flash is 1.0 second ON. -
Page 62: Two Stage Non-Communicating 127A/Ca17/Ba17Ch17/Bh17/226A
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Two Stage Non-Communicating Airflow Selection for 127A/CA17/BA17CH17/BH17/226A Variable Speed Furnaces (non-communicating) The variable speed furnaces provide blower operation to match the These units are a low cost 2-stage option that is non-communicating capacities of the compressor during high and low stage cooling utilizing 2 stage scroll technology. -
Page 63: System Function And Sequence Of Operation (127A/226A/Ca17/Ch17/Ba17/Bh17)
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual System function and Sequence Of Operation Quiet Shift (127A/226A/CA17/CH17/BA17/BH17) Quiet shift is a field selectable defrost mode (factory set to OFF), which will eliminate occasional noise that could be heard at the start of defrost NOTE: Defrost control board is equipped with 5 minute lockout timer cycle and restarting of heating cycle. -
Page 64: Check Charge
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Heating Check Chart Procedure To check system operation during heating cycle, refer to the Heating Check Chart on outdoor unit. This chart indicates whether a correct relationship exists between system operating pressure and air temperature entering indoor and outdoor units. -
Page 65: Care And Maintenance
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual CARE AND MAINTENANCE Cleaning Coil 1. Remove top cover. (See Remove Top Cover in Cabinet section of To assure high performance and minimize possible equipment this manual.) malfunction, it is essential that maintenance be performed periodically on this equipment. -
Page 66: Electrical Controls And Wiring
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual Electrical Controls and Wiring Final Check-Out 1. Disconnect power to both outdoor and indoor units. After the unit has been operating, the following items should be checked. 2. - Page 67 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual A90208 Fig. 48 – Air Conditioner Troubleshooting Chart Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 68 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual A90206 Fig. 49 – Heat Pump Troubleshooting - Heating Cycle Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 69 Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual A90207 Fig. 50 – Heat Pump Troubleshooting - Cooling Cycle Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Page 70: Index Of Tables
Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual INDEX OF TABLES Page No. Required Field-Installed Accessories for Air Conditioners ........5 Required Field-Installed Accessories for Heat Pumps .