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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.
Printed in USA
92-104921-25-00( / )
VARIABLE SPEED R-410A
HEAT PUMP/ AIR CONDITIONING
OUTDOOR UNITS
INSTALLATION INSTRUCTIONS
(-)A15AZ(-)P16AZ/(-)A16AZ
(15/16 SEER2) EQUIPPED WITH
ECONET™ COMMUNICATIONS
Enabled
ISO 9001:2015
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Troubleshooting
Related Manuals for EcoNet P16AZ24A
Summary of Contents for EcoNet P16AZ24A
- Page 1 OPERATION OF THIS UNIT. READ THESE INSTRUCTIONS (-)A15AZ(-)P16AZ/(-)A16AZ THOROUGHLY BEFORE ATTEMPTING INSTALLATION (15/16 SEER2) EQUIPPED WITH OR OPERATION. FAILURE TO FOLLOW THESE ECONET™ COMMUNICATIONS INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION, ADJUSTMENT, SERVICE, OR MAINTENANCE POSSIBLY RESULTING IN FIRE, ELECTRICAL SHOCK,...
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Page 2: Table Of Contents
2.2 Agency Performance Audit Testing Notice...........4 5.4 Initial System Set-Up .................27 2.3 Importance of a Quality Installation.............4 5.5 Setting up Charging Mode Using EcoNet Control Center Service Menu...27 2.4 System Sizing and Selection..............4 5.6 Setting up Charging Mode Using Variable Speed Outdoor Control Menu ...27 2.5 Importance of Proper Indoor/Outdoor Match-Ups......5... -
Page 3: Important Safety Information
1.0 IMPORTANT SAFETY INFORMATION WARNINGS: CAUTIONS: • These instructions are intended as an aid to • R-410A systems operate at approximately 60% higher qualified, licensed service personnel for proper pressures (1.6 times) than R-22 systems. Do not use R-22 service equipment or components on R-410A installation, adjustment, and operation of this unit. -
Page 4: General Information
EcoNet™ or conventional 24VAC 2-stage affixed to the outdoor unit. Failure to confirm controls. Please refer to the manufacturer's... -
Page 5: Importance Of Proper Indoor/Outdoor Match-Ups
2.0 GENERAL INFORMATION 2.6 Checking Product factors must be considered before selecting a heat pump system to provide year-round comfort. Received The Air Conditioning Contractors of America (ACCA) Manual J method of load calculation is one Upon receiving unit, inspect it for any shipping recognized procedure for determining the heating and cooling load. -
Page 6: Unit Specifications
3.0 UNIT SPECIFICATIONS 3.1 Model Number Nomenclature and Available Models AVAILABLE MODELS (-)P16AZ24AJ3CA (-)A16AZ24AJ3CA (-)P16AZ36AJ3CA (-)A16AZ36AJ3CA (-)P16AZ48AJ3CA (-)A16AZ48AJ3CA (-)P16AZ60AJ3CA (-)A16AZ60AJ3CA... -
Page 7: Electrical And Physical Data
Amperes Ampacity No. Rows CFM [L/s] Amperes Amperes Sq. Ft. [m2] Oz. [g] Lbs. [kg] Lbs. [kg] (RLA) (LRA) (FLA) Amperes (-)P16AZ24A 208/230 9.1/9.1 20/20 20/20 11.8 [1.10] 118 [3345] 160 [72.6] 167 [75.7] (-)P16AZ36A 208/230 13.4/13.4 30/30 35/35 19.5 [1.81] 135 [3827] 232 [105.2] 239 [108.4]... -
Page 8: 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 9: Choosing A Location
It is highly recommended to switch the ALLOW 60” [152.4 cm] EcoNet™ Control Center or thermostat to the OF CLEARANCE 12” Min. (30.5 cm) 24” "Emergency Heat" mode during freezing rain [61.0 CM]... -
Page 10: Corrosive Environments
4.0 INSTALLATION 4.2 Choosing a Location (cont.) 4.3 Unit Mounting 4.2.3 Corrosive Environment The metal parts of this unit may be subject to 4.3.1 Unit Mounting Methods rust or deterioration if exposed to a corrosive environment. This oxidation could shorten the The outdoor heat pump unit may be mounted in equipment’s useful life. -
Page 11: 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 heat pump, either on a flat roof or on a slab, observe the following guidelines. •... -
Page 12: Refrigerant Line Set Selection
4.0 INSTALLATION 4.4 Refrigerant Line Set Selection 4.4.1 Replacing Existing 4.4.2.2 Refrigerant Migration Dur- ing Off Cycle Systems Long line set applications can require a consider- To prevent failure of a new unit, the existing line set able amount of additional refrigerant. This addition- must be correctly sized for the new unit and must al refrigerant needs to be managed throughout the be cleaned or replaced. -
Page 13: Compressor Oil Level Adjustment
4.0 INSTALLATION 4.4.2.5 Oil Level Adjustment for 4.4.2.6 Capacity Losses Long line lengths can result in a reduction in capac- Long Line Set Applications ity due to vapor line pressure drop and heat gain or loss. Refer to Table 2 for capacity loss multipliers Additional oil may need to be added if refrigerant for various vapor line diameters and equipment line is added during installation. -
Page 14: Liquid Line Selection
4.0 INSTALLATION 4.4.4 Liquid Line Selection between the outdoor unit and indoor coil. • Measure the total indoor length of liquid line re- The purpose of the liquid line is to transport warm quired. sub-cooled liquid refrigerant between the outdoor •... - Page 15 4.0 INSTALLATION Table 2A: Refrigerant Line Sizing Chart (English Units) 15/16 SEER2 Variable Speed Heat Pumps Outdoor Unit ABOVE or BELOW Indoor Unit Allowable Allowable Equivalent Length (Feet) Unit Size Liquid Line Vapor Line < 25 26-50 51-75 76-100 101-125 126-150 Size Size...
- Page 16 4.0 INSTALLATION Table 2B: Refrigerant Line Sizing Chart (Metric Units) 15/16 SEER2 Variable Speed Outdoor Units Outdoor Unit ABOVE or BELOW Indoor Unit Allowable Allowable Vapor Equivalent Length (Meters) Liquid Line Unit Size Line Size Size < 8 8-15 16-23 24-30 31-38 39-46...
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Page 17: 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 18: 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 Outdoor Unit Level or Near Level to Indoor Coil Line Set REFERENCE TABLE 2 FOR MAXIMUM LENGTH LIMITATIONS IDEALLY, LINE SET SLOPES AWAY FROM OUTDOOR UNIT. VERIFY SUB-COOLING PRIOR TO EXPANSION DEVICE, INSULATED LIQUID LINE IN UNCONDITIONED SPACE FOR... -
Page 19: Outdoor Unit Below Indoor Unit
4.0 INSTALLATION 4.5.2.2 Outdoor Unit Below Indoor Coil (Long Line Set Applications) INSULATED VAPOR LINE FULL LENGTH INVERTED TRAP VERIFY LIQUID SUBCOOLING EVEN WITH TOP PRIOR TO EXPANSION DEVICE OF THE COIL IN THE COOLING MODE. INSULATE LIQUID LINE IN UNCONDITIONED SPACE FOR LONG REFERENCE TABLE 2 FOR LINE APPLICATIONS... -
Page 20: Outdoor Unit Above Indoor Unit
4.0 INSTALLATION 4.5.2.3 Outdoor Unit Above Indoor Coil Figure 5 For applications with the outdoor unit above the • Insulated vapor line full length. indoor coil the following is required: • Verify at least 5°F [2.8ºC] of liquid subcooling at •... -
Page 21: Tubing Connections
4.0 INSTALLATION 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 22: Initial Leak Testing
Air or nitrogen in the system increases condensing operation by disconnecting the EcoNet™ control temperature and pressure, resulting in increased center or thermostat. By doing this, the controls will... -
Page 23: Final Leak Testing
The four 18 AWG low-voltage control wires must internal electrical arcing in near vacuum conditions be installed from the EcoNet™ Control Center may result in a damaged or failed compressor. to the indoor unit and from the indoor unit to the Never run a scroll compressor while the system is outdoor unit. -
Page 24: Conventional 24Vac Thermostat Control Wiring Connections
• R 24 VAC IMPORTANT: • C 24 VAC common The preferred method of unit installation and operation is by the EcoNet™ • Data wire E1 Communications Communicating System which allows access to • Data wire E2 Communications the fault history of the system. This diagnostic The EcoNet™... -
Page 25: Power Wiring
4.0 INSTALLATION 4.9 Control Wiring (cont.) 4.10 Power Wiring It is important that proper electrical power is TYPICAL 2-STAGE THERMOSTAT: available at the heat pump power terminal block. The (-)P16 HEAT PUMP WITH AIR-HANDLER acceptable operating voltage range is shown below. USING A THERMOSTAT WITH DEHUMIDIFICATION VOLTAGE RANGES (60 HZ) 24 VAC 2 - Stage Thermostat HP... -
Page 26: Grounding
™ Center Set-Up After all installation steps have been completed, apply electrical power to the indoor and outdoor units. The EcoNet Control Center or thermostat Follow the set-up instructions included with the should be switched to the off position initially. -
Page 27: Initial System Set-Up
"On-Demand Dehumidification" is turned off in the 1. Set the thermostat to the cool or heat mode EcoNet™ Control Center (or on the air-handler or depending on which mode the system is to be gas furnace control board for conventional 24VAC charged in. -
Page 28: Indoor Air-Flow Verification
EcoNet Control Center, the indoor air-flow is automatically controlled to the done prior to final charge adjustment. -
Page 29: Measurement Device Set-Up
5.0 SYSTEM START-UP AND REFRIGERANT CHARGING 5.8.1 Measurement Device and adjust as necessary. CHARGING BY LIQUID SUBCOOLING PER THE SYSTEM CHARGING Set-Up CHART MUST BE USED FOR FINAL CHARGE ADJUSTMENT. 1. With an R-410A gauge set, attach the high- pressure hose to the access fitting on the liquid line (small) service valve at the OD unit. -
Page 30: Final Charging By Liquid Subcooling
• Restore power to unit at disconnect if required. -80 [-62] – 5 [-15] 55.1 [380.0] 70 [21] 201.0 [1385.8] 135 [57] 508.0 [3502.5] • Exit Charging Mode and configure EcoNet™ -70 [-57] – 10 [-12] 62.4 [430.2] 75 [24] 217.8 [1501.7] 140 [60] 541.2 [3731.4] -60 [-51] 0.4 [2.8]... -
Page 31: Normal Sequence Of Operation
RPM and the indoor The sequence of operation is based on the system blower motor will ramp down to the minimum air- being set up for EcoNet communications using flow level for 30-45 seconds to extract the residual... -
Page 32: Supplemental Electric Heat During Heating Mode
34 minutes with the outdoor coil minutes. temperature below 35°F [1.7°C]. The system returns to normal heating 3. The VSODC determines a defrost cycle operation as directed by the EcoNet is required based on the OAT and EVAPIN Control Center. temperatures. -
Page 33: Sequence Of Operation For Conventional 24Vac Thermostat Controls
6.0 NORMAL SEQUENCE OF OPERATION 6.7 Sequence NOTE: Should the outdoor ambient temperature thermistor fail, the VSODC of Operation for will initiate a defrost every 34 minutes of operation when the coil temperature is Conventional 2-Stage below 35°F. 24VAC Thermostat Controls The (-)A15AZ/(-)P16AZ/(-)A16AZ unit will have variable capacity from 45% to 65%. -
Page 34: Components And Controls
12. Pressure Relief Valve outdoor fan motor and inverter. If an alert or alarm 13. ModBus occurs the Econet Control Center will display the active faults as well as fault history. If used with 14. SW1 and SW2 the conventional 24 VAC 2-stage thermostat then 15. -
Page 35: Power Inverter Compressor Control
EcoNet Control Center or con- as long as the operating conditions remain within ventional 24VAC 2-stage thermostat. -
Page 36: Active System Protection Features
Control Center different forms of protection that are provided. will display a High Refrigerant Pressure Lockout Refer to the Econet help pages on the Rheem fault on the screen. A manual reset is required website for further troubleshooting and diagnostics. -
Page 37: Compressor Shut-Down Sequence For High Or Low Refrigerant Pressure Fault
If there are 3 low pressure faults in the same call for cooling or during 120 minutes of continuous Current Imbalance heating operation, the VSODC will lock the compressor out and the EcoNet Control Center will display a Low Refrigerant Pressure Lockout If the compressor current exceeds an acceptable fault on the screen. -
Page 38: Sensor Failure Default Operation
8.0 ACTIVE SYSTEM PROTECTION FEATURES 8.12 Sensor Failure Default Operation If the controls sense an externally connected sensor displayed on the EcoNet Control Center and has failed, the system will enter a fail safe operating Variable Speed Outdoor Control identifying which mode and will continue to condition the space until sensor has failed. -
Page 39: Diagnostics And Troubleshooting
9.0 DIAGNOSTICS & TROUBLESHOOTING Advanced operating status and diagnostic information is available through the EcoNet Control Center that greatly enhances the ability to quickly and accurately diagnose system faults. For further assistance for troubleshooting a system please see the Bluetooth Contractor's App or the Econect Help Pages at myrheem. - Page 40 9.0 DIAGNOSTICS & TROUBLESHOOTING Advanced operating status and diagnostic information is available through the EcoNet Control Center that greatly enhances the ability to quickly and accurately diagnose system faults. For further assistance for troubleshooting a system please see the Bluetooth Contractor's App or the Econect Help Pages at myrheem.
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Page 41: Checking Transducers And Temperature Sensors
9.0 DIAGNOSTICS & TROUBLESHOOTING 9.1 Checking Transducers & Temperature Sensors TRANSDUCERS: SUCTION LINE TRANSDUCER: Checking transducers for accuracy can be tricky. VDC out = 2.4 A technician will be required to do some voltage VDC in = 5.1 reading and math to validate the transducer is So... - Page 42 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.1 Checking Transducers & Temperature Sensors (cont.) TEMPERATURE SENSORS: All the temperature sensors/thermistors used in Apply resistance measurements to the chart found the equipment use the same scale of 10,000 Ohms below and compare to the control. at 77ºF (25ºC).
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Page 43: 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 44: Service Analyzer Charts
9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts High superheat Low charge Check system charge. (greater than 15°F [-8.3°C] at coil) Verify suction thermistor operation (10k thermistor) Replace thermistor. Verify pressure transducer operation input and Replace thermistor and/or harness and/or control output voltage board. - Page 45 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) Short cycling of Low charge Check system charge. compressor (cont.) Dirty coil Duct too small or restricted Faulty internal overload Replace compressor. Voltage present on Communication failure from VSODC to inverter. Check communication harness connectors and wire load side of inverter continuity.
- Page 46 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) Moisture Poor evacuation on installation or during service High head pressure Noncondensibles air Unusual head and Wrong refrigerant or mixed refrigerants suction pressure readings Foreign matter – Copper tubing cuttings In each case, the cure is the same. Recover refrigerant, flush system.
- Page 47 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) POSSIBLE CAUSE Bad pressure reading Check transducer wiring. Suction thermistor in wrong location Relocate thermistor. Poor system control using an EXV Bad suction thermistor Replace thermistor. Improper superheat setting (less than 5°F [-2.8°C]) Adjust EXV SH setpoint dipswitches and validate valve operation.
- Page 48 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) Moisture causing valve to stick open. Recover refrigerant, replace filter-drier, evacuate system, and recharge. Dirt or foreign material causing valve to stick Recover refrigerant, replace filter-drier, remove EXV open and purge with nitrogen, evacuate system, and recharge. If EXV is completely clogged use the VSODC to open the EXV, and purge with nitrogen, replace filter drier, and recharge.
- Page 49 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) Service Analyzer Charts ELECTRONIC EXPANSION VALVES (cont.) SYMPTOM POSSIBLE CAUSE REMEDY Unequal evaporator circuit loading Ensure airflow is equally distributed through Superheat is low evaporator. to normal with low suction pressure Check for blocked distributor tubes.
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Page 50: Troubleshooting Tips
9.0 DIAGNOSTICS & TROUBLESHOOTING 9.4 Troubleshooting Tips COOLING MODE TROUBLESHOOTING TIPS INDICATORS SYSTEM SUPERHEAT SUBCOOLING DISCHARGE SUCTION PROBLEM Normal: 5°–15°F Normal: See PRESSURE PRESSURE [2.8° – 8.3°C] Charging Chart Overcharge High High High Undercharge High Liquid Restriction High High (Filter Drier) Dirty Outdoor Coil High High... -
Page 51: 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 of on and between the aluminum fins. -
Page 52: Wiring Diagram
11.0 WIRING DIAGRAM EVAPIN OST... -
Page 53: Appendix
Press the “installer” button in the bottom right indoor coil EXV control (when necessary), corner of the “settings” screen. and EcoNet™ Control Center according to the c. Press the “air handler” or “furnace” button. following wiring diagrams. d. Once in the “air handler settings” or “furnace settings”... - Page 54 12.0 APPENDIX 12.1 Agency Performance Audit Test Instructions (cont.) the blue down button until “stop test” screen. appears at the bottom of the “installer a. To turn the unit off either press the blue checkout” screen. Then press the “Stop” down button until “stop test”...
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