Rheem 16AJL- Manuals

6 FIGURE 1 DIMENSIONS DIMENSIONAL DATA AIR DISCHARGE: ALLOW60” MINIMUM CLEARANCE. L H SEE DETAIL A w A-00008 SERVICE ACCESS ALLOW 24” CLEARANCE AIR INLETS (LOUVEREDPANELS)ALLOW 6”MINIMUMCLEARANCE Height “H” (in.) [mm] Length “L” (in.) [mm] Width “W” (in.) [mm] 24 36, 48, 60 16 Seer Model Size 31 5 ⁄...

9 4.0 REFRIGERANT CONNECTIONS All units are factory charged with Refrigerant 410A. All models are supplied withservice valves. Keep tube ends sealed until connection is to be made to preventsystem contamination. 5.0 TOOLS REQUIRED FOR INSTALLING & 5.0 SERVICING R-410A MODELS Manifold Sets: -Up t...

10 6.0 REPLACEMENT UNITS To prevent failure of a new condensing unit, the existing evaporator tubing systemmust be correctly sized and cleaned or replaced. Care must be exercised that theexpansion device is not plugged. For new and replacement units, liquid line filterdrier sould be installed and re...

9.2 MAXIMUM LENGTH OF LINES The maximum length of interconnecting line is 150 feet. Always use the shortestlength possible with a minimum number of bends. Additional compressor oil is notrequired for any length up to 150 feet. NOTE: Excessively long refrigerant lines cause loss of equipment capacity...

12 1/4” [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]* 0 0 0 0 0 0 3/8” [9.52] 0 0 0 0 0 0 5/16” [7.93] 0 0 0 5 [1.52] 13 [3.96] 20 [6.10] 3-Ton 3/8” [9.53] 3/8” [9.52]* 0 0 0 0 0 0 1/2” [12.70] 0 0 0 0 0 0 5/16” [7.93] 0 0 0 7 [2.13] 28 [8.53] 50 [15.2...

13 9.4 TUBING INSTALLATION Observe the following when installing correctly sized type “L” refrigerant tubingbetween the condensing unit and evaporator coil: • If a portion of the liquid line passes through a hot area where liquid refrigerantcan be heated to form vapor, insulating the liquid line is ...

15 Electric resistance heaters can use CFM = volts x amps x 3.414 1.08 x temp rise Gas furnaces can use CFM = BTUH ∅ T x 1.08 An air velocity meter or airflow hood can give a more accurate reading of the sys-tem CFM. 13.0 CHECKING REFRIGERANT CHARGE Charge for all systems should be checked against t...

16 13.2 CHARGING BY WEIGHT For a new installation, evacuation of interconnecting tubing and evaporator coil isadequate; otherwise, evacuate the entire system. Use the factory charge shown inTable 1 of these instructions or unit data plate. Note that charge value includescharge required for 15 ft. of...

17 14.3 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 II insulation is required if run separate. Low voltage wiringmay be run through the insulated bushing provided in the 7/8 hole in the basepanel, up ...

18 16.0 THERMOSTAT USAGE WITH THE 16 SEERCONDENSING UNIT A two-stage cooling thermostat is required for proper unit operation. • Humidity input to the indoor air handler or furnace via the “DHM” terminal on the ther- mostat. Refer to System wiring for proper connections. • Compressor protection via ...

19 2) Flash Code 3 - Short Cycling Condition: A pattern of short cycling emerges where the run time for theprevious four cycles is less than three minutes each.Possible causes: High head pressure• High pressure switch is open• System overcharged• Non-condensables in systemFaulty thermostatIntermitte...

20 FIGURE 3 CORE SENSE™ DIAGNOSTICS TROUBLESHOOTING CHART Run Time Over 18 Hours Compressor is running extremely long run cycles System Pressure Trip Discharge pressure out of limits or compressor overloaded Status LED Green “POWER” Red “TRIP” Yellow “ALERT” Flash Code 1 Yellow “ALERT” Flash Code 2 ...

22 20.3 LOW AMBIENT CONTROL (LAC) This component senses compressor head pressure and shuts the heat pump fan offwhen the head pressure drops to approximately 220 PSIG [1516.8 kPa]. Thisallows the unit to build a sufficient head pressure at lower ambient in order to main-tain system balance and obtai...

23 21.2 SINGLE-POLE COMPRESSOR CONTACTOR (CC) Single-pole contactors are used on all standard single phase units up through 5tons. Caution must be exercised when servicing as only one leg of the power sup-ply is broken with the contactor. 22.0 TROUBLE SHOOTING In diagnosing common faults in the air ...

24 22.2 MECHANICAL CHECKS FLOW CHART Unit Running? YES Low Head Pressure Low Suction Pressure Open IPR Valve Dirty Evaporator Inadequate Airflow Restricted Filter-drier NO Overcharge Low Ambient Temperature Inoperative Indoor Blower Indoor Metering Device Stuck Closed Wrong Condenser Fan Rotation Pr...

25 TABLE 7 AIR CONDITIONING SYSTEM TROUBLESHOOTING TIPS AIR CONDITIONING SYSTEM TROUBLESHOOTING TIPS 22.3 SUPERHEAT CALCULATION 1. Measure the suction pressure at the suction line service valve. 2. Convert the suction pressure to saturated temperature. See Table 7. 3. Measure the temperature of the ...

26 SYMPTOM POSSIBLE CAUSE REMEDY Unit will not run • Power off or loose electrical connection • Check for correct voltage at contactor in condensing unit • Thermostat out of calibration-set too high • Reset • Defective contactor • Check for 24 volts at contactor coil - replace if contacts are open •...

27 FIGURE 5 18.1 PSC OD FAN MOTORSINGLE-PHASE WIRING DIAGRAM 23.0 WIRING DIAGRAMS