Rheem 16AJL Specifications

92-21354-88-01SUPERSEDES 92-21354-88-0016 SEER SERIESCONDENSING UNITS2 - 5 TONS FEATURING INDUSTRYSTANDARD R-410A REFRIGERANTEQUIPPED WITH CORE SENSE

106.0 REPLACEMENT UNITSTo prevent failure of a new condensing unit, the existing evaporator tubing systemmust be correctly sized and cleaned or replac

9.2 MAXIMUM LENGTH OF LINESThe maximum length of interconnecting line is 150 feet. Always use the shortestlength possible with a minimum number of

121/4” [6.35] 0 1 [0.31] 24 [7.32] 50 [15.24] 76 [23.17] 102 [31.09]2-Ton 3/8” [9.53] 5/16” [7.93]* 000 0003/8” [9.52] 000 0005/16” [7.93] 0005 [1.52]

139.4 TUBING INSTALLATIONObserve the following when installing correctly sized type “L” refrigerant tubingbetween the condensing unit and evapora

1410.0 EVACUATION PROCEDUREEvacuation is the most important part of the entire service procedure. The life andefficiency of the equipment is dependent

15Electric resistance heaters can useCFM =volts x amps x 3.4141.08 x temp riseGas furnaces can useCFM =BTUH∅T x 1.08An air velocity meter or airflow h

1613.2 CHARGING BY WEIGHTFor a new installation, evacuation of interconnecting tubing and evaporator coil isadequate; otherwise, evacuate the entire s

1714.3 CONTROL WIRING(See Figure 2)If the low voltage control wiring is run in conduit with the power supply, Class I insu-lation is required. Class I

1816.0 THERMOSTAT USAGE WITH THE 16 SEERCONDENSING UNITA two-stage cooling thermostat is required for proper unit operation.• Humidity input to the in

192) Flash Code 3 - Short CyclingCondition: A pattern of short cycling emerges where the run time for theprevious four cycles is less than three minut

2TABLE OF CONTENTS1.0 SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.0 GENERAL . . . .

20FIGURE 3CORE SENSE™ DIAGNOSTICS TROUBLESHOOTING CHARTRun Time Over 18 HoursCompressor isrunning extremelylong run cyclesSystem Pressure TripDischarg

21FIGURE 3CORE SENSE™ DIAGNOSTICS TROUBLESHOOTING CHART – CONTINUEDStatus LEDYellow “ALERT”Flash Code 3Yellow “ALERT”Flash Code 4Yellow “ALERT”Flash C

2220.3 LOW AMBIENT CONTROL (LAC)This component senses compressor head pressure and shuts the heat pump fan offwhen the head pressure drops to appro

2321.2 SINGLE-POLE COMPRESSOR CONTACTOR (CC)Single-pole contactors are used on all standard single phase units up through 5tons. Caution must be

2422.2 MECHANICAL CHECKS FLOW CHARTUnit Running?YESLow Head PressureLow Suction PressureOpen IPR Valve Dirty EvaporatorInadequate AirflowRestricted Fi

25TABLE 7AIR CONDITIONING SYSTEM TROUBLESHOOTING TIPSAIR CONDITIONING SYSTEMTROUBLESHOOTING TIPS22.3 SUPERHEAT CALCULATION1. Measure the suction press

26SYMPTOM POSSIBLE CAUSE REMEDYUnit will not run • Power off or loose electrical connection • Check for correct voltage at contactor in condensing uni

27FIGURE 518.1 PSC OD FAN MOTORSINGLE-PHASE WIRING DIAGRAM23.0 WIRING DIAGRAMS

28 CM 0212FIGURE 618.2 ECM OD FAN MOTOR

31.0 SAFETY INFORMATION!WARNINGTHE MANUFACTURER’S WARRANTY DOES NOT COVER ANY DAMAGE ORDEFECT TO THE HEAT PUMP CAUSED BY THE ATTACHMENT OR USE OFANY C

4!CAUTIONTHE COMPRESSOR HAS AN INTERNAL OVERLOAD PROTECTOR, UNDERSOME CONDITIONS, IT CAN TAKE UP TO 2 HOURS FOR THIS OVERLOAD TORESET. MAKE SURE O

52.0 GENERALThe information contained in this manual has been prepared to assist in the properinstallation, operation and maintenance of the air cond

6FIGURE 1DIMENSIONSDIMENSIONAL DATAAIR DISCHARGE: ALLOW60” MINIMUM CLEARANCE.LHSEE DETAIL AwA-00008SERVICE ACCESSALLOW 24” CLEARANCEAIR INLETS(LOUVER

73.0 LOCATING UNIT3.1 CORROSIVE ENVIRONMENTThe metal parts of this unit may be subject to rust or deterioration if exposed to acorrosive environment.

8NOTE: These units must be installed outdoors. No ductwork can be attached, orother modifications made, to the discharge grille. Modificatio

94.0 REFRIGERANT CONNECTIONSAll units are factory charged with Refrigerant 410A. All models are supplied withservice valves. Keep tube ends sealed