Table of Contents
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WARNING:
RECOGNIZE THIS SYM-
BOL 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.
92-105074-12-00 (01/17) Printed in USA
R-410A HEAT PUMP
OUTDOOR UNITS
INSTALLATION INSTRUCTIONS
(-)P16 (16 SEER) NON-COMMUNICATING
NOTE: Actual unit appearance
may vary.
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Table of Contents
Troubleshooting
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Summary of Contents for Rheem P16 Series
- Page 1 WARNING: RECOGNIZE THIS SYM- BOL AS AN INDICATION R-410A HEAT PUMP OF IMPORTANT SAFETY INFORMATION OUTDOOR UNITS WARNING THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED, LICENSED SERVICE PERSONNEL FOR INSTALLATION INSTRUCTIONS PROPER INSTALLATION, ADJUSTMENT, AND OPERATION OF THIS UNIT. READ THESE INSTRUCTIONS (-)P16 (16 SEER) NON-COMMUNICATING THOROUGHLY BEFORE...
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Page 2: Table Of Contents
CONTENTS Important Start-Up ............25-29 Safety Information ..........3 Efficiency Testing Notice ..........3 Start-Up ..............25 Checking Airflow ............25 General Information ........4-7 Evacuation Procedure ..........26 Checking Product Received ........4 Final Leak Testing ............26 Application ..............4 Electrical and Physical Data ........5-6 Checking Specifications ...............7 Refrigerant Charge ........27-29... -
Page 3: Important Safety Information
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
GENERAL INFORMATION Application WARNING: Before specifying any heat pump equipment, Improper installation, or installation not a survey of the structure and a heat loss and made in accordance with these instructions, heat gain calculation must be made. A heat loss can result in unsatisfactory operation and/ calculation involves identifying all surfaces and or dangerous conditions and can cause the... -
Page 5: Electrical And Physical Data
GENERAL INFORMATION Electrical and Physical Data (-)P16... - Page 6 GENERAL INFORMATION (-) P 16 24 A J 2 N A MINOR SERIES CONTROLS C - COMMUNICATING N - NON-COMMUNICATING TYPE 2 - TWO STAGE VOLTAGE J = 1 PH, 208-230/60 A = NATIONAL HEAT PUMP 1ST DESIGN B = NATIONAL HEAT PUMP 2ND DESIGN F = DUAL FUEL HEAT PUMP CAPACITY 24 = 24000 BTU/HR [7.03 kW]...
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Page 7: Specifications
GENERAL INFORMATION Specifi cations DIMENSIONAL DATA (-)P16 48, 60 31 (787) 35 (889) 45 (1143) Height “H” inches (mm) Length “L” inches (mm) 33.75 (857) 33.75 (857) 35.75 (908) Width “W” inches (mm) 33.75 (857) 33.75 (857) 35.75 (908) Proper Installation Proper sizing and installation of this equipment is MATCH ALL COMPONENTS: critical to achieve optimal performance. -
Page 8: Installation
INSTALLATION Choosing a Location IMPORTANT: Corrosive Environment Consult local and national building codes and ordinances for special The metal parts of this unit may be subject to installation requirements. Following location rust or deterioration if exposed to a corrosive information will provide longer life and simplified environment. -
Page 9: For Units With Space Limitations
INSTALLATION Choosing a Location (cont.) • If elevating a unit on a flat roof, use 4" x 4" For Units With Space [10.2 cm x 10.2 cm] or equivalent stringers Limitations positioned to distribute unit weight evenly and In the event that a space limitation exists, we will prevent noise and vibration. -
Page 10: Snow Depth Table
INSTALLATION Choosing a Location (cont.) GROUND SNOW DEPTH – INCHES ALABAMA INDIANA MINNESOTA NEW MEXICO PENNSYLVANIA VIRGINIA Huntsville Evansville Duluth Albuquerque Allentown Dulles Airport ARIZONA Fort Wayne International Falls Clayton Erie Lynchburg Flagstaff Indianapolis Minneapolis/St. Paul 50 Roswell Harrisburg National Airport NEW YORK Prescott South Bend... -
Page 11: Tools And Refrigerant
INSTALLATION Tools and Refrigerant Tools Required for Installing Pressure: The pressure of R-410A is approximately 60% (1.6 times) greater than and Servicing R-410A Models R-22. Recovery and recycle equipment, pumps, Manifold Sets: hoses, and the like must have design pressure ratings appropriate for R-410A. -
Page 12: Replacement Units
INSTALLATION Replacement Units To prevent failure of a new unit, the existing line set IMPORTANT: When replacing an must be correctly sized and cleaned or replaced. R-22 unit with an R-410A unit, either replace Care must be exercised that the expansion device the line set or ensure that residual mineral oil is is not plugged. - Page 13 INSTALLATION Interconnecting Tubing (cont.) tubing length, fi ttings, vertical separation, acces- Interconnecting Tubing and sories, and fi lter dryers. The table below references Fitting Losses diff erent commonly used equivalent lengths. Refrigerant tubing is measured in terms of actual length and equivalent length. Actual length is used for refrigerant charge applications.
- Page 14 INSTALLATION Interconnecting Tubing (cont.) Example: A 3-Ton heat pump unit is installed 50’ This application is acceptable because the 50’ below the ID unit, requires a 75’ of 1/2” diameter vertical rise is less than the maximum rise of 75’ for liquid line, and 4 90°...
- Page 15 INSTALLATION Interconnecting Tubing (cont.) Factory • Add the total length and fi tting pressure drop. Name Plate Oil Installed Compressor This will equal your total equivalent length. OD Model Charge (oz) • Reference Table 2 to verify that the calculated (-)P1624 ZPS21K5E-PFV equivalent length falls within the compatibility...
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Page 16: Maximum Length Of Lines
INSTALLATION Interconnecting Tubing (cont.) For applications that are considered to have a long • Insulated liquid and suction line or uncondi- line set with the outdoor unit and indoor unit on the tioned space only. same level the following is required: •... - Page 17 INSTALLATION Interconnecting Tubing (cont.) OUTDOOR UNIT ABOVE INDOOR SECTION LINE SET INSULATE LIQUID AND SUCTION LINE REFERENCE TABLE 2 FOR ELEVATION LIMITATIONS VERIFY SUB-COOLING PRIOR TO THROTTLING DEVICE TXV OR EEV AT INDOOR EVAPORATOR For applications that are considered to have a long •...
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Page 20: Tubing Installation
INSTALLATION Interconnecting Tubing (cont.) Tubing Installation Observe the following when installing correctly sized type “L” refrigerant tubing between the condensing unit and evaporator coil: • Check the tables on page 12 for the correct suction line size and liquid line size. •... -
Page 21: Tubing Connections
INSTALLATION Interconnecting Tubing (cont.) • If tubing is to be run underground, it must be run in a sealed watertight chase. • Use care in routing tubing and do not kink or twist. Use a good tubing bender on the vapor line to prevent kinking. -
Page 22: Leak Testing
INSTALLATION Interconnecting Tubing (cont.) Leak Testing Indoor coils have only a holding charge of dry nitrogen. Keep all tube ends sealed until connections are to be made. WARNING: Do not use oxygen to purge lines or pressurize system for leak test. Oxygen reacts violently with oil, which can cause an explosion resulting in severe personal injury or death. -
Page 23: Wiring
WIRING Control Wiring FIELD WIRE SIZE FOR 24-VOLT THERMOSTAT CIRCUITS WARNING: Turn off electric power at the fuse box or service panel before making Thermostat SOLID COPPER WIRE – AWG. Load (amps) any electrical connections. Also, the ground connection must be completed before making line voltage connections. -
Page 24: Power Wiring
WIRING Control Wiring (cont.) Field wiring must comply with the National Electric Connect power wiring to line-voltage lugs located in the outdoor heat pump unit electrical box. (See Code (C.E.C. in Canada) and any applicable local wiring diagram attached to unit access panel.) code. -
Page 25: Start-Up
START-UP Start-Up Even though the unit is factory-charged with Refrigerant-410A, the charge must be checked to the charge table attached to the service panel and adjusted, if required. Allow a minimum of 15 minutes of run time before analyzing charge. CAUTION: Single-pole contactors are used on all standard single-phase units... -
Page 26: Evacuation Procedure
START-UP Evacuation and Leak Testing Evacuation Procedure Evacuation is the most important part of the entire service procedure. The life and efficiency of the equipment is dependent upon the thoroughness exercised by the serviceman when evacuating air and moisture from the system. Air or nitrogen in the system causes high condensing temperatures and pressure, resulting in increased power input and nonverifiable... -
Page 27: Refrigerant Charge
START-UP Checking Refrigerant Charge Charge for all systems should be checked against Confirm ID Airflow and Coils the Charging Chart inside the access panel cover. Are Clean WARNING: The top of the scroll Confirm adequate indoor supply airflow prior to compressor shell is hot. -
Page 28: Gross Charging By Pressures
START-UP Checking Refrigerant Charge (cont.) With an accurate scale (+/– 1 oz. [28.3 g]) or 2. Note the Outdoor Dry Bulb Temperature, volumetric charging device, adjust charge ODDB° = _____°F [_____°C]. Unit charging is recommended under the following outdoor difference between that shown on the unit data conditions ONLY: plate and that calculated for the new system installation. -
Page 29: Finishing Up Installation
START-UP Checking Refrigerant Charge (cont.) requirement for the given outdoor and indoor NOTICE: If the indoor temperature is conditions, add charge. If the measured subcool above or below the recommended range, run the is above the listed requirement for the given system to bring the temperature down or run the outdoor and indoor conditions, remove charge. -
Page 30: Components And Controls
COMPONENTS AND CONTROLS Compressor Crankcase Heat (CCH) While scroll compressors usually do not require ll heaters are located on the lower half of the crankcase heaters, there are instances when a compressor shell. Its purpose is to drive refrigerant heater should be added. Refrigerant migration from the compressor shell during long cycles, during the off cycle can result in a noisy start up. -
Page 31: High- And Low-Pressure Controls (Hpc And Lpc)
COMPONENTS AND CONTROLS High- and Low-Pressure Controls (HPC and LPC) These controls keep the compressor from CAUTION: The compressor has operating in pressure ranges which can cause an internal overload protector. Under some damage to the compressor. Both controls are in conditions, it can take up to 2 hours for this the low-voltage control circuit. - Page 32 COMPONENTS AND CONTROLS Demand Defrost Control (cont.) to approximately 40 psig when the low pressure High/Low Pressure Control Monitoring – control automatically resets. If the low pressure Enhanced Defrost Control Only switch opens 3 times within a particular call for Status of high and low pressure controls is cooling operation, the defrost control will lock out monitored by the enhanced feature demand...
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Page 33: Accessories
ACCESSORIES Heat Pump Thermostat WARNING: Turn off electric power Warning Light Kit RXPX-D01 at the fuse box or service panel before making any electrical connections. Also, the ground This component senses a compressor lock out connection must be completed before making line and tells the thermostat service light to come on. -
Page 34: Evacuation And Leak Testing
EVACUATION AND LEAK TESTING EVACUATION PROCEDURE Evacuation is the most important part of the entire • After adequate evacuation, open both service valves service procedure. The life and effi ciency of the equip- by removing both brass service valve caps with an ment is dependent upon the thoroughness exercised adjustable wrench. -
Page 35: Checking Refrigerant Charge
EVACUATION AND LEAK TESTING CHECKING REFRIGERANT CHARGE Charge for all systems should be checked against the be performed to insure proper charge has been set. Charging Chart inside the access panel cover. For measuring pressures, the service valve port on the liquid valve (small valve) and the service port on the suction line between the reversing valve and compres- WARNING:... - Page 36 EVACUATION AND LEAK TESTING CHECKING REFRIGERANT CHARGE actual charge required with installed liquid line size and Cooling Mode: 80°F Dry Bulb length using: Heating Mode: 70°F Dry Bulb 1/4” [6.4 mm] O.D. = .3 oz./ft. [8.5 g/.30 m] NOTICE: If the Indoor temperature is above or 5/16”...
- Page 37 EVACUATION AND LEAK TESTING FINAL CHARGE BY SUB- copper liquid line (small line). It is recommended to use a calibrated clamp on temperature probe COOLING or an insulated surface thermocouple. Step 1. After gross charging note the designed Sub-Cool Step 4. Subtract the liquid line temperature (Step 3) from value.
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Page 38: Troubleshooting
TROUBLESHOOTING low are not intended to be an answer to all problems but IMPORTANT: The units provide status and only to guide the technicianʼs trouble shooting. Through diagnostic information that greatly enhances the abil- a series of yes and no answers, follow the logical path ity to quickly diagnose system faults. - Page 39 TROUBLESHOOTING COOLING MECHANICAL CHECKS FLOW CHART Unit Running? Go to Electrical Pressure problems? Checks Flow Chart High Head Pressure Low Head Pressure Low Suction Pressure Dirty Outdoor Coil Low on Charge Dirty Filters Inoperative Outdoor Fan Open IPR Valve Dirty Indoor Coil Overcharge Low Ambient Temperature Inadequate Indoor Air Flow...
- Page 40 TROUBLESHOOTING DEFROST MECHANICAL CHECKS FLOW CHART DEFROST SYSTEM No Defrost Incomplete Defrost Excessive Defrost Reversing Valve Stuck Poor Sensor Location Wrong Defrost Control Timer Setting No Defrost Timer Wrong Defrost Control Control Power Timer Setting Poor Sensor Location Failed Defrost Control Failed Defrost Relay Low System Charge (doesnʼt stop O.D.
- Page 41 TYPICAL THERMOSTAT WIRING DIAGRAMS The following fi gures show the typical wiring diagrams WIRE COLOR CODE with air handler and heat pump. Cooling and heat pump BK – BLACK G – GREEN P R – PURPLE Y – YELLOW airfl ows may need to be adjusted for homeowner com- BR –...
- Page 42 TYPICAL THERMOSTAT WIRING DIAGRAMS TYPICAL DUAL FUEL APPLICATION - TWO STAGE HEAT PUMP Typical Two-Stage Furnace Heat Pump Thermostat Control Outdoor Unit BROWN YELLOW YELLOW/BLUE PURPLE BLUE NOTES: – (1) FOR PROGRAMMING THERMOSTAT IN DUEL FUEL APPLICATION SEE (1) (1) THERMOSTAT INSTALLATION INFORMATION. (2) FOR REMOTE SENSOR INSTALLATION SEE THERMOSTAT INSTALLATION INFORMATION.
- Page 43 START-UP – CHECKING AIRFLOW The air distribution system has the greatest effect on also cause noise. The installers should balance the air airfl ow. The duct system is totally controlled by the distribution system to ensure proper quiet airfl ow to all contractor.
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Page 44: Diagnostics
DIAGNOSTICS Cooling Mechanical Checks Flowchart Outdoor Unit Running? Go to Electrical Checks Flowchart Pressure Problems? High Head Low Liquid Low Suction Pressure Pressure Pressure Dirty Outdoor Low on Dirty Filters Coil Charge Inoperative Outdoor Open IPR Dirty Indoor Coil Valve Low Ambient Inadequate Indoor Overcharge... -
Page 45: Heating Mechanical Checks Flowchart
DIAGNOSTICS Heating Mechanical Checks Flowchart Outdoor Unit Running? Go to Electrical Checks Flowchart Pressure Problems? High Liquid Low Liquid Low Suction Pressure Pressure Pressure Dirty Indoor Low on Dirty Outdoor Coil Coil Charge Inoperative Indoor Open IRP Inadequate Outdoor Valve Airflow Low Indoor Inoperative Outdoor... -
Page 46: Defrost Mechanical Checks Flowchart
DIAGNOSTICS Defrost Mechanical Checks Flowchart Defrost System Incomplete Excessive Defrost Defrost Defrost Reversing Valve Poor Sensor Wrong Defrost Control Stuck Location Timer Setting No Defrost Timer Wrong Defrost Control Poor Sensor Control Power Timer Setting Location Failed Defrost Low System Failed Defrost Relay Control Charge... -
Page 47: General Troubleshooting Chart
DIAGNOSTICS General Troubleshooting Chart 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 48: Service Analyzer Charts
DIAGNOSTICS 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, TEV (TXV) [-9°C] at coil) Power element superheat out of adjustment internally Foreign matter stopping fl ow High internal load Hot air (attic) entering return Heat source on;... - Page 49 DIAGNOSTICS Service Analyzer Charts COMPRESSOR OVERHEATING (cont.) SYMPTOM POSSIBLE CAUSE CHECK OR REMEDIES Short cycling of Low charge Check system charge. compressor (cont.) Low evaporator airfl ow Dirty coil Dirty fi lter Duct too small or restricted Faulty run capacitor Replace.
- Page 50 DIAGNOSTICS Service Analyzer Charts CONTAMINATION SYMPTOM POSSIBLE CAUSE REMEDY Moisture Poor evacuation on installation or during service In each case, the cure is the same. Recover refrigerant. Add fi lter drier, evacuate, and recharge. High head pressure Noncondensibles air Unusual head and Wrong refrigerant or mixed refrigerants suction readings Foreign matter –...
- Page 51 DIAGNOSTICS Service Analyzer Charts FLOODING SYMPTOM POSSIBLE CAUSE REMEDY Loose sensing bulb Secure the bulb and insulate. Bulb in wrong location Relocate bulb. Poor system control using a TEV Wrong size TEV Use correct replacement. Improper superheat setting (less than 5°F [-15°C]) Replace TEV.
- Page 52 DIAGNOSTICS Service Analyzer Charts THERMOSTATIC EXPANSION VALVES (cont.) SYMPTOM POSSIBLE CAUSE REMEDY Refrigerant drainage from fl ooded evaporator Install trap riser to the top of the evaporator coil. Inoperable crankcase heater or crankcase heater Replace or add crankcase heater. Compressor fl ood needed back upon start-up Any of the causes listed under symptoms of...
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Page 53: Cooling/Heating Tips
DIAGNOSTICS COOLING MODE TROUBLESHOOTING TIPS INDICATORS DISCHARGE SUCTION SUPERHEAT COMPRESSOR SYSTEM SUBCOOLING PRESSURE PRESSURE Normal: AMPS PROBLEM Normal: See 5°–15°F Charging Chart [-15° – -9°C] High High High High Overcharge High Undercharge Liquid Restriction High High (Drier) Low Indoor Airfl ow High High High... -
Page 54: Wiring Diagrams
WIRING DIAGRAMS... - Page 55 WIRING DIAGRAMS...
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