Rheem RHPL-HM2421JC, Installation Instructions Manual

Page 1: ...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...

Page 2: ...Board LED to Determine Blower CFM 21 5 13 Cooling Airflow Settings 21 5 14 Cooling Airflow Adjustments with Single Stage Condensing Units 22 5 15 Heating Airflow Adjustment 22 5 16 Airflow Adjustment...

Page 3: ...ts such as dirt dust fumes and odors into the home causing property damage Fumes and odors from toxic volatile or flammable chemicals as well as automobile exhaust and carbon monoxide CO can be drawn...

Page 4: ...d below are those chemicals and substances commonly associated with similar equipment in our industry and other manufacturers Glass Wool Fiberglass Insulation Carbon Monoxide CO Formaldehyde Benzene M...

Page 5: ...e control module CAUTION SEE SECTION 13 2 INDOOR COIL DRAIN PAN DRAIN LINE In compliance with recognized codes it is recommended that an auxiliary drain pan be installed under all evaporator coils or...

Page 6: ...ion of toxic fumes and odors including carbon monoxide from migrating into the living space If air moving equipment or ductwork is located in spaces containing fuel burning appliances such as water he...

Page 7: ...stall the unit in such a way as to allow necessary access to the coil filter rack and blower control compartment Install the unit in a level position to ensure proper condensate drainage Make sure uni...

Page 8: ...IR OPENING UPFLOW UNIT SHOWN UNIT MAY BE INSTALLED UPFLOW DOWNFLOW HORIZONTAL RIGHT OR LEFT AIR SUPPLY Model Return Air Opening Return Air Opening Cabinet Size Width Inches Depth Length Inches 21 193...

Page 9: ...for Combustible Floor Base RXHB XX Units with electric heating kW equal to or less than the values listed in the table do not require a combustible floor base Vertical units require clearance on at le...

Page 10: ...ctory shipped for vertical upflow and horizontal left application If return air is to be ducted install duct flush with floor Use fireproof resilient gasket 1 8 to 1 4 in thick between duct unit and f...

Page 11: ...lug Tighten lug as tight as possible while holding circuit breaker Check wires and make sure each wire is secure and none are loose Repeat for left wire bundle in left top circuit breaker lug Replace...

Page 12: ...ason we recommend the fol lowing for all air handler applications but special attention should be paid to those installed in unconditioned spaces Duct sizing and airflow are critical and based on the...

Page 13: ...lso be accomplished by attaching ground wire s to ground lug s provided in the unit wiring compartment Ground lug s are located close to wire entrance on left side of unit upflow Lug s may be moved to...

Page 14: ...9 44 RXBH 1724 10J Single 208 240 1 60 5 4 7 2 26 0 30 0 4 9 40 45 39 44 Single 208 240 1 60 10 8 14 4 51 9 60 0 4 9 80 90 72 82 RXBH 1724A15J MULTI CKT 1 208 240 1 60 3 6 4 8 17 3 20 0 4 9 30 35 28 3...

Page 15: ...onnections to the 24VAC thermostat wires If any connections are made to the G W1 W2 Y1 Y2 B or ODD wires the Comfort Control2 control will assume the control is being used with a tra ditional thermost...

Page 16: ...bias dip switches should be on 24V AC power on R C must be present at the control for the air handler to operate reference Figure 9 Line voltage must be present at the control for indoor blower opera...

Page 17: ...erial communications the airflow can only be adjusted usin the serial communicating thermostat or a service tool To adjust the airflow go to the airflow adjustment menu and select the desired adjustme...

Page 18: ...sing ODD do NOT use any of the alternate profiles Only use the factory default profile Use of the alternate profiles with ODD will decrease energy efficiency with no gain in comfort Profile A Factory...

Page 19: ...ler Y1 E W1 TypicalTwo StageThermostat PRL Heat Pump Outdoor Unit Y2 C R B Y2 Field Installed Line Voltage WIRING INFORMATION Factory Standard ODD R Y1 Y2 G W2 R Y1 C L D Y Y BL BL R BR W R PR DHM L F...

Page 20: ...Y R C Y W BL Humidistat G W1 Y2 G BK W BK BL G Y BR R Y BL FIGURE 16 TYPICAL SINGLE STAGE THERMOSTAT SINGLE STAGE STRAIGHT COOLING WITH ELECTRIC HEAT Y2 AIR FLOW G W2 C R HPL Air Handler Single Stage...

Page 21: ...d control wiring inside unit pull excess control wire to outside of unit and provide strain relief for field wiring on inside of cabinet at point wiring penetrates cabinet Make sure after installation...

Page 22: ...IRFLOW The HPL series of air handlers are factory configured to for proper airflow The cooling airflow CAF is fixed and the DIP switch settings have no effect on airflow The factory setti is Cooling A...

Page 23: ...ield adjusted Electric Heat Airflow Thermostat Input 2 ton 3 ton 4 ton 5 ton W1 or W2 800 CFM 1200 CFM 1600 CFM 1800 CFM 6 8 Cooling Mode Dehumidification CONVENTIONAL THERMOSTAT WIRING RHPL HM2421JC...

Page 24: ...to increase latent capacity The HPL air handler is programmed to provide maximum efficiency and optimum humidity removal When high humidity is detected the air handler reduces cooling airflow defined...

Page 25: ...ata is obsolete If system will not operate order new memory card to update system information 68 ECM No Signal The ECM motor is not communicating to the air handler control board Make sure the ECM mot...

Page 26: ...MPORTANT Flanges around blower opening for attaching supply duct must be up out of blower discharge even if not used so they do not restrict airflow from blower IMPORTANT If an elbow is included in th...

Page 27: ...tside of coil box 7 2 CONDENSATE DRAIN TUBING Consult local codes or ordinances for specific requirements IMPORTANT When making drain fitting connections to the drain pan use a thin layer of Teflon pa...

Page 28: ...Installed If a remote filter is installed it should be sized for a maximum of 300 feet min air veloci ty for the CFM required IMPORTANT Do not operate system without a filter A filter is required to p...

Page 29: ...7 0 8 0 9 1 0 550 575 600 600 625 625 625 600 575 550 455 540 620 695 760 825 885 940 985 1030 40 55 70 85 105 120 135 150 170 185 775 775 775 800 800 825 825 825 825 825 540 615 685 750 810 870 925...

Page 30: ...c resistance heat is BTUH Heating Watts x 3 412 Where 1 kW 1000 Watts 3 412 Btuh Watt 11 3 CALCULATING AIRFLOW CFM The formula for calculating airflow using temperature rise and heating BTUH for units...

Page 31: ...n been provided under the unit with separate drain Units installed above a finished ceiling Is condensate line properly sized run trapped pitched and tested Is ductwork correctly sized run taped and i...

Page 32: ...it would become necessary to clean the blower motor and wheel If it becomes necessary to remove the blower assembly from the unit see instruc tions on removal and disassembly of motor blower and heate...

Page 33: ...aced as they were check wiring diagram if necessary Tighten supply power wiring securely to terminals lugs Make sure wiring is within cabinet and will not interfere with access door Make sure proper s...

Page 34: ...the motor has locking tabs It has been proven that by applying excessive force to the A C cable half of the connector it is possible to force the connector in backwards It will not seat and click prop...

Page 35: ...t is necessary to order by part number and include with the order the complete model number and serial number from the unit data plate See parts list for unit component part numbers 15 0 ACCESSORIES K...

Page 36: ...ERNAL FILTER RACK RXHF B21 B24 B 1 50 A Model Cabinet Size Filter Size Part Number A B 21 20 x 20 RXHF B21 20 40 20 77 24 25 x 20 RXHF B24 25 00 21 04 Accommodate 1 filter Auxiliary Horizontal Overflo...

Page 37: ...37 FIGURE 29 AIR HANDLER EQUIPPED WITH Serial Communication WIRING DIAGRAM...

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Page 40: ...40 CM 0411...