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WARNING:
RECOGNIZE THIS SYMBOL
AS AN INDICATION OF
IMPORTANT SAFETY
INFORMATION
WARNING
THESE INSTRUCTIONS
ARE INTENDED AS AN AID
TO QUALIFIED, LICENSED
SERVICE PERSONNEL FOR
PROPER INSTALLATION,
ADJUSTMENT, AND
OPERATION OF THIS UNIT.
READ THESE INSTRUCTIONS
THOROUGHLY BEFORE
ATTEMPTING INSTALLATION
OR OPERATION. FAILURE
TO FOLLOW THESE
INSTRUCTIONS MAY
RESULT IN IMPROPER
INSTALLATION,
ADJUSTMENT, SERVICE,
OR MAINTENANCE
POSSIBLY RESULTING IN
FIRE, ELECTRICAL SHOCK,
PROPERTY DAMAGE,
PERSONAL INJURY, OR
DEATH.
Do not destroy this manual.
Please read carefully and
keep in a safe place for future
reference by a serviceman.
[ ] indicates metric conversions.
92-104921-38-00 ( /
) Printed in USA
AIR COOLED
CONDENSING UNITS
INSTALLATION INSTRUCTIONS
DRAC13A & DRAC14A MODEL SERIES -
13.4 & 14.3 SEER2
FEATURING INDUSTRY STANDARD
R-410A REFRIGERANT
ST-A1335-01
NOTE: Actual unit appearance
ST-A1335-01
may vary.
ISO 9001:2015
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Table of Contents
Troubleshooting
Related Manuals for DURASTAR DRAC13A Series
Summary of Contents for DURASTAR DRAC13A Series
- Page 1 WARNING: AIR COOLED RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY CONDENSING UNITS INFORMATION INSTALLATION INSTRUCTIONS WARNING THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED, LICENSED DRAC13A & DRAC14A MODEL SERIES - SERVICE PERSONNEL FOR PROPER INSTALLATION, 13.4 & 14.3 SEER2 ADJUSTMENT, AND OPERATION OF THIS UNIT.
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Page 2: Table Of Contents
CONTENTS 1.0 IMPORTANT SAFETY INFORMATION......3 5.3 Verify Indoor Air-Flow..............2.0 GENERAL INFORMATION..........4 5.4 Refrigerant Charging..............2.1 Introduction.................4 5.4.1 Measurement Device Set-Up..........27 2.2 Importance of a Quality Installation..........4 5.4.2 Preliminary Charging by Weight..........27 2.3 System Sizing and Selection............4 5.4.3 Preliminary Charging by Pressures........ -
Page 3: Important Safety Information
1.0 IMPORTANT SAFETY INFORMATION WARNINGS: CAUTIONS: • R-410A systems operate at approximately 60% • These instructions are intended as an aid to higher pressures (1.6 times) than R-22 systems. Do qualified, licensed service personnel for proper not use R-22 service equipment or components on installation, adjustment, and operation of this R-410A equipment. -
Page 4: General Information
2.0 GENERAL INFORMATION WARNING: • NFPA90A Installation of Air Conditioning and Ventilating Systems. Improper installation, or installation not made in • NFPA90B Installation of warm air heating and air accordance with these instructions, can result conditioning systems. in unsatisfactory operation and/or dangerous conditions and can cause the related warranty Install the indoor unit in such a way as to allow not to apply. -
Page 5: Importance Of Proper Indoor/Outdoor Match-Ups
2.0 GENERAL INFORMATION 2.4 Importance of 2.6 Efficiency Testing Proper Indoor/Outdoor Notice Match-Ups For purposes of verifying or testing efficiency ratings, the test procedure in Title 10 APPENDIX M1 to To assure many years of reliable operation and Subpart B of Part 430 (Uniform Test Method for optimum customer comfort and to assure the Measuring the Energy Consumption of Central Air outdoor unit warranty remains valid, an air-handler... -
Page 6: Unit Specifications
REFRIGERANT A = R-410A B = R-454B C = FUTURE REFRIGERANT SEER2 = 14.3 SEER2 13 = 13.4 SEER2 PRODUCT CATEGORY AC = CONDENSING UNIT BRAND DR = DURASTAR 3.2 Available Models DRAC13A18AJ1NNA DRAC14A18AJ1ANA DRAC13A24AJ1NNA DRAC14A24AJ1ANA DRAC13A30AJ1NNA DRAC14A30AJ1ANA DRAC13A36AJ1NNA DRAC14A36AJ1ANA... -
Page 7: Electrical And Physical Data
3.0 UNIT SPECIFICATIONS 3.3 Electrical and Physical Data DRAC13A ELECTRICAL DATA PHYSICAL DATA Compressor Fan Motor Minimum Fuse or HACR Outdoor Coil Model Refrig. Per Rated Load Locked Rotor Face Area Full Load Circuit Circuit Breaker Number MFR's Model Voltage Phase Freq Circuit... - Page 8 3.0 UNIT SPECIFICATIONS 3.3 Electrical and Physical Data DIMENSIONAL DATA DRAC13A Height "H" inches [cm] 25.65 [65.15] 25.65 [65.15] 25.65 [65.15] 25.65 [65.15] 27.65 [70.23] 39.65 [100.71] 45.65 [115.95] Length "L" inches [cm] 29.54 [75.03] 33.66 [85.49] 33.66 [85.49] 33.66 [85.49] 33.66 [85.49] 35.54 [90.28] 35.54 [90.28] Width "W"...
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Page 9: Installation
4.0 INSTALLATION 4.1 Tools and Refrigerant 4.1.1 Tools Required for Pressure: The pressure of R-410A is approximately 60% (1.6 times) greater than Installing and Servicing R-22. Recovery and recycle equipment, pumps, R-410A Models hoses, and the like must have design pressure ratings appropriate for R-410A. -
Page 10: Choosing A Location
4.0 INSTALLATION 4.2 Choosing a Location 4.2.1 Allowable Clearances 4.2.2 Operational Issues Related to Unit Location 12" [30.5 cm] to side intake louvers 24" [61.0 cm] to service access panels IMPORTANT: 60" [152.4 cm] vertical for fan discharge Locate the unit If space limitations exist, the following clearances in a manner that will not prevent, impair, or will have minimal impact to capacity and efficiency... -
Page 11: Corrosive Environments
4.0 INSTALLATION 4.2 Choosing a Location (cont.) 4.2.3 Corrosive Environment WARNING: Disconnect all power to The metal parts of this unit may be subject to rust or unit before starting maintenance. Failure to do so can deterioration if exposed to a corrosive environment. cause electrical shock resulting in severe personal This oxidation could shorten the equipment’s useful injury or death. -
Page 12: Elevating Unit
4.0 INSTALLATION 4.3.3 Elevating Unit WARNING: Secure an elevated unit and its elevating stand in order to prevent tipping. Failure to do so may result in severe personal injury or death. If elevating the unit, either on a flat roof or on a slab, observe the following guidelines. -
Page 13: Refrigerant Line Set Selection
4.0 INSTALLATION 4.4 Refrigerant Line Set Selection 4.4.1 Replacing Existing Systems IMPORTANT: To prevent failure of a new unit, the existing line set When replacing an must be correctly sized for the new unit and must R-22 unit with an R-410A unit, either replace be cleaned or replaced. - Page 14 4.0 INSTALLATION 4.4 Refrigerant Line Set Selection (cont.)
- Page 15 4.0 INSTALLATION 4.5 Refrigerant Line Set Selection (cont.) Example: A DRAC14A is installed 50' below the This application is acceptable because the 50' ver- indoor unit, requires 75' of 1/2" diameter liquid line, tical rise is less than the maximum rise of 100' for 3/4"...
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Page 16: Suction Line Selection
4.0 INSTALLATION 4.4 Refrigerant Line Set Selection (cont.) 4.4.4 Suction Line Selection system along with the refrigerant before it returns to the compressor crankcase. It is critical to the life Purpose of the vapor line is to return superheated of the compressor for the oil to be able to return to vapor to the condensing unit from the evaporator. -
Page 17: Capacity Losses
4.0 INSTALLATION 4.4 Refrigerant Line Set Selection (cont.) 4.4.5.6 Oil Level Adjustment for 4.4.5.7 Capacity Losses Long Line Set Applications Long line lengths can result in a reduction in capacity due to suction line pressure drop and heat gain. Refer Additional oil may need to be added for long line set to Table 2 for capacity loss multipliers for various applications. -
Page 18: Line Set Installation
4.0 INSTALLATION 4.5 Line Set Installation • If tubing is to be run underground, it must be run in in the heating mode will result in noise inside the a sealed watertight chase. structure. • Use care in routing tubing and do not kink or twist. •... -
Page 19: Relative Location Of Indoor And Outdoor Units
4.0 INSTALLATION 4.5 Line Set Installation (cont.) 4.5.2 Relative Location of Indoor and Outdoor Units 4.5.2.1 Indoor and Outdoor Unit Near Same Level OUTDOOR UNIT LEVEL OR NEAR LEVEL TO INDOOR SECTION LINE SE T REFERENCE TABLE 2 FOR MAXIMUM LENGTH LIMITATION IDEALLY, LINE SET SLOPES AWAY FROM OUTDOOR. -
Page 20: Outdoor Unit Below Indoor Unit
4.0 INSTALLATION 4.5 Line Set Installation (cont.) 4.5.2.2 Outdoor Unit Below Indoor Unit OUTDOOR UNIT BELOW INDOOR SECTION LINE SET ROUTE REFRIGERANT LINES EVEN WITH TOP OF COIL OR INSTALL INVERTED TRAP. INSULATE LIQUID LINE IN INSULATE SUCTION UNCONDITIONED LINE FULL LENGTH SPACE FOR LONG FOR ALL APPLICATIONS LINE APPLICATIONS... -
Page 21: Outdoor Unit Above Indoor Unit
4.0 INSTALLATION 4.5 Line Set Installation (cont.) 4.5.2.3 Outdoor Unit Above Indoor Unit OUTDOOR UNIT ABOVE INDOOR SECTION LINE SET INSULATE LIQUID LINE IN UNCONDITIONED INSULATE SUCTION SPACE FOR LONG LINE FULL LENGTH LINE APPLICATIONS FOR ALL APPLICATIONS REFERENCE TABLE 2 FOR MAXIMUM LENGTH AND VERTICAL SEPARATION LIMITATIONS... -
Page 22: Tubing Connections
4.0 INSTALLATION 4.5 Line Set Installation (cont.) 4.5.3 Tubing Connections Indoor coils have only a holding charge of dry nitrogen. Keep all tube ends sealed until connections are to be made. • Use type “L” copper refrigeration tubing. Braze the connections with the following alloys: –... -
Page 23: Initial Leak Testing
4.0 INSTALLATION 4.6 Initial Leak Testing 4.7 Evacuation Indoor coils have only a holding charge of dry Evacuation is one of the most important parts of the nitrogen. Keep all tube ends sealed until connections entire installation and service procedure. The life and are to be made. -
Page 24: Control Wiring
4.0 INSTALLATION 4.9 Control Wiring WARNING: guide below to size the 24-volt control wiring. Turn off electric power Do not use phone cord to connect indoor and at the fuse box or service panel before making outdoor units and thermostat. This could damage any electrical connections. -
Page 25: Power Wiring
4.0 INSTALLATION 4.10 Typical Control Wiring Connections (cont.) NOTICE: Field wiring must comply with the DO NOT connect aluminum field wire to the contactor lugs. National Electric Code (C.E.C. in Canada) and any applicable local code. 4.12 Grounding 4.11 Power Wiring WARNING: The unit must be It is important that proper electrical power from a... -
Page 26: System Start-Up And Refrigerant Charging
5.0 SYSTEM START-UP & REFRIGERANT CHARGING 5.1 System Start-Up Air supply diffusers must be selected and located carefully. They must be sized and positioned Overview to deliver treated air along the perimeter of the space. If they are too small for their intended Once the system hardware and wiring has been airflow, they become noisy. -
Page 27: Refrigerant Charging
5.0 SYSTEM START-UP & REFRIGERANT CHARGING l/s = Volts x Amps x 0.895 performed by a qualified and certified technician. The refrigerant charge for all systems should be SHC x temp rise checked against the Charging Chart located inside the access panel cover. Gas furnaces can use: The optimum refrigerant charge for any outdoor CFM =... -
Page 28: Preliminary Charging By Pressures
5.0 SYSTEM START-UP & REFRIGERANT CHARGING Example: A three-ton unit requires 75 ft. of line set bring the temperature within this range. with a liquid line diameter of 1/2”. 2. Note the Outdoor Dry Bulb Temperature, ODDB° Factory Charge for Line Set = 15 ft. × .6 oz. = 9 oz. = _____°F [°C]. -
Page 29: R-410A Temperature Pressure Chart
5.0 SYSTEM START-UP & REFRIGERANT CHARGING 5.4.5 R-410A Temperature saturation temperature for R-410A at the measured liquid pressure. Pressure Chart Liquid Saturation Temperature, SAT°= _____°F SATURATION R-410A SATURATION R-410A SATURATION R-410A SATURATION R-410A [°C]. TEMP PSIG TEMP PSIG TEMP PSIG TEMP PSIG [kPa]... -
Page 30: Components & Controls
7.0 COMPONENTS & CONTROLS 7.1 Compressor Scroll compressors are used in all models. 7.2 Fan Motor Most DRAC13A and DRAC14A condensing units are equipped with a standard PSC motor, but a few models utilize a high efficiency single-speed ECM motor. All heaters are located on the lower half of the 7.3 Outdoor Fan compressor shell. -
Page 31: High And Low Pressure Control
7.0 COMPONENTS & CONTROLS 7.7 High- and Low-Pressure Controls (HPC and LPC) HPC and LPC are not factory installed on The high-pressure control (HPC) is an automatic- reset which opens near 610 PSIG [4206 kPa] and (-)A*******J1NA models, but can be field installed closes near 420 PSIG [2896 kPa]. -
Page 32: Accessories
8.0 ACCESSORIES WARNING: [-18°C]) in order to maintain system balance and Turn off electric power capacity. Low ambient control should be used at the fuse box or service panel before making any on all equipment frequently operated below 70°F electrical connections while installing accessories. [21°C] ambient. -
Page 33: Diagnostics And Troubleshooting
9.0 DIAGNOSTICS & TROUBLESHOOTING 9.1 Cooling Mechanical Checks Flowchart... -
Page 34: General Troubleshooting Guide
9.0 DIAGNOSTICS & TROUBLESHOOTING 9.2 General Troubleshooting Guide WARNING: Disconnect all power to unit before servicing. Contactor may break only one side. Failure to shut off power can cause electrical shock resulting in personal injury or death. SYMPTOM POSSIBLE CAUSE REMEDY Unit will not run •... -
Page 35: Service Analyzer Charts
9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts COMPRESSOR OVERHEATING SYMPTOM POSSIBLE CAUSE CHECK/REMEDY High superheat Low charge Check system charge. (greater than 15°F Faulty metering device Restricted cap tube, TXV [8.3°C] at coil) Power element superheat out of adjustment internally Foreign matter stopping flow High internal load Hot air (attic) entering return... - Page 36 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) COMPRESSOR OVERHEATING (cont.) SYMPTOM POSSIBLE CAUSE CHECK OR REMEDIES Short cycling of Low charge Check system charge. compressor (cont.) Low evaporator airflow Dirty coil Dirty filter Duct too small or restricted Faulty run capacitor Replace.
- Page 37 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) CONTAMINATION SYMPTOM POSSIBLE CAUSE REMEDY Moisture Poor evacuation on installation or during service High head pressure Noncondensibles air Unusual head and Wrong refrigerant or mixed refrigerants suction readings Foreign matter – Copper tubing cuttings copper filings In each case, the cure is the same.
- Page 38 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) FLOODING SYMPTOM POSSIBLE CAUSE REMEDY Loose sensing bulb Secure the bulb and insulate. Bulb in wrong location Relocate bulb. Poor system control using a TXV Wrong size TXV Use correct replacement. Improper superheat setting (less than 5°F [2.8°C]) Replace TXV.
- Page 39 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) THERMOSTATIC EXPANSION VALVES (cont.) SYMPTOM POSSIBLE CAUSE REMEDY Refrigerant drainage from flooded evaporator Install trap riser to the top of the evaporator coil. Compressor flood Inoperable crankcase heater or crankcase heater Replace or add crankcase heater.
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Page 40: Troubleshooting Tips
9.0 DIAGNOSTICS & TROUBLESHOOTING 9.4 Troubleshooting Tips COOLING MODE TROUBLESHOOTING TIPS INDICATORS DISCHARGE SUCTION SUPERHEAT COMPRESSOR SYSTEM SUBCOOLING PRESSURE PRESSURE Normal: AMPS PROBLEM Normal: See 5°–15°F Charging Chart [2.8° – 8.3°C] Overcharge High High High High Undercharge High Liquid Restriction High High (Filter Drier) -
Page 41: Outdoor Unit Maintenance
10.0 OUTDOOR UNIT MAINTENANCE 10.1 Outdoor Coil Cleaning The outdoor fan draws air across the coil during an angle. Washing from the top of the coil down operation which results in contaminants collecting from the inside out is the most effective method on and between the aluminum fins. -
Page 42: Wiring Diagrams
11.0 WIRING DIAGRAMS 11.1 For Single-Phase Models with PSC Motor... -
Page 43: Single-Phase Models With Ecm Motor
11.0 WIRING DIAGRAMS 11.2 For Single-Phase Models with ECM Motor...
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