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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
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ATTEMPTING INSTALLATION
OR OPERATION. FAILURE
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INSTRUCTIONS MAY
RESULT IN IMPROPER
INSTALLATION,
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keep in a safe place for future
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[ ] indicates metric conversions.
92-109593-01-02( / )
Printed in the USA
VARIABLE SPEED R-410A
HEAT PUMP OUTDOOR UNITS
INSTALLATION INSTRUCTIONS
RD17AZ
(14.3/17 SEER2) EQUIPPED WITH
ECONET™ COMMUNICATIONS
Enabled
ST-A1345-01-00
ISO 9001:2015
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Summary of Contents for Ruud RD17AZ
- Page 1 ARE INTENDED AS AN AID TO QUALIFIED, LICENSED SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT, AND OPERATION OF THIS UNIT. READ THESE INSTRUCTIONS RD17AZ THOROUGHLY BEFORE ATTEMPTING INSTALLATION (14.3/17 SEER2) EQUIPPED WITH OR OPERATION. FAILURE TO FOLLOW THESE ECONET™ COMMUNICATIONS INSTRUCTIONS MAY...
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Page 2: Table Of Contents
CONTENTS 1.0 IMPORTANT SAFETY INFORMATION ............3 4.10 Power Wiring ..................27 2.0 GENERAL INFORMATION ................4 4.11 Grounding....................27 5.0 SYSTEM START-UP AND REFRIGERANT CHARGING ........ 28 2.1 Introduction ....................4 2.2 Agency Performance Audit Testing Notice ..........4 5.1 System Start-Up Overview ..............28 2.3 Importance of Quality Installation ............. -
Page 3: Important Safety Information
1.0 IMPORTANT SAFETY INFORMATION WARNINGS: CAUTIONS: • These instructions are intended as an aid to qualified, • R-410A systems operate at approximately 60% licensed service personnel for proper installation, higher pressures (1.6 times) than R-22 systems. Do adjustment, and operation of this unit. Read these not use R-22 service equipment or components on R-410A equipment. -
Page 4: General Information
Read the entire 2.1 Introduction instruction manuals before starting the installation. The RD17AZ series heat pumps are specifically IMPORTANT: This product has been designed and designed to operate with existing indoor air manufactured to meet certified AHRI capacity and... -
Page 5: Importance Of Proper Indoor/Outdoor Match-Ups
2.0 GENERAL INFORMATION The Air Conditioning Contractors of America concealed, should be filed immediately with the (ACCA) Manual J method of load calculation is one shipping company. Check model number, electrical recognized procedure for determining the heating characteristics, and accessories to determine if they and cooling load. -
Page 6: Unit Specifications
60 - 60000 BTU/HR Refrigerant Z- R-410A Y - R-454B W - Future Refrigerant Region A - All Regions SEER2 Product Category P - Heat Pump D - Side Discharge Heat Pump A - Air Conditioner Brand R - Rheem / Ruud... -
Page 7: Electrical And Physical Data
3.0 UNIT SPECIFICATIONS 3.1 Model Number Nomenclature and Available Models (cont.) AVAILABLE MODELS RD17AZ24AJ3NA RD17AZ36AJ3NA RD17AZ48AJ3NA RD17AZ60AJ3NA 3.2 Electrical and Physical Data RD17AZ Height "H" inches [cm] 36.6 [93.0] 46.4 [117.8] 58 [147.3] 58 [147.3] Length "L' inches [cm] 40.4 [102.6] 42.3 [107.4]... -
Page 8: Installation
4.0 INSTALLATION 4.1 Tools and Refrigerant 4.1.1 Tools Required for Installing Pressure: pressure R-410A 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 –... -
Page 9: Choosing A Location
4.0 INSTALLATION 4.2 Choosing a Location 4.2.1 Allowable Clearances Single Unit Installations COIL SIDE RD17AZ24, RD17AZ36 REAR Obstruction Min Clearance (in) Rear Coil Side Front Service Panel Open Space Above SERVICE PANEL Obstruction Above, Less Than 40” FRONT ST-A1345-33-00 COIL SIDE RD17AZ48, RD17AZ60 REAR Obstruction Min Clearance (in) -
Page 10: Operational Issues Related To Unit Location
4.0 INSTALLATION 4.2 Choosing a Location (cont.) 4.2.2 Operational Issues Related Corrosive elements include, but are not limited to, salt spray, fog or mist in seacoast areas, sulphur or to Unit Location chlorine from lawn watering systems, and various IMPORTANT: chemical contaminants from industries such as paper Locate the unit in a mills and petroleum refineries. -
Page 11: Unit Mounting
4.0 INSTALLATION 4.3 Unit Mounting 4.3.1 Unit Mounting Methods The outdoor heat pump unit may be mounted in a number of ways. The most common method is on the ground mounted on a concrete or pre-fabricated pad. It can also be mounted on a ground or roof mounted metal frame, wooden frame, or 4”... -
Page 12: Refrigerant Line Set Systems
4.0 INSTALLATION 4.4 Refrigerant Line Set Selection 4.4.1 Replacing Existing Systems 4.4.2.2 Refrigerant Migration During Off Cycle To prevent failure of a new unit, the existing line set must be correctly sized for the new unit and must Long line set applications can require a consider- be cleaned or replaced. -
Page 13: Capacity Losses
4.0 INSTALLATION 4.4.2.5 Capacity Losses Long line lengths can result in a reduction in capacity due to vapor line pressure drop and heat gain or loss. Refer to Table 2 for capacity loss multipliers for various vapor line diameters and equipment line lengths. This table does not account for any capacity loss due to heat gain or loss from the environment. -
Page 14: Liquid Line Selection
4.0 INSTALLATION 4.4.4 Liquid Line Selection • Measure the total indoor length of liquid line re- quired. The purpose of the liquid line is to transport warm • Add all of the equivalent lengths associated with sub-cooled liquid refrigerant between the outdoor any fittings or accessories using Table 1. - Page 15 4.0 INSTALLATION Table 2A: Refrigerant Line Sizing Chart (English Units) 14.3/17 SEER2 Variable Speed Heat Pumps Outdoor Unit ABOVE or BELOW Indoor Unit Allowable Equivalent Length (Feet) Allowable Vapour Unit Size Liquid Line 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) 14.3/17 SEER2 Variable Speed Heat Pumps Outdoor Unit ABOVE or BELOW Indoor Unit Allowable Allowable Equivalent Length (Feet) Liquid Line Vapour Line Unit Size 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 Coil (Long Line Set Applications)
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 Coil
4.0 INSTALLATION 4.5.2.3 Outdoor Unit Above Indoor Coil OUTDOOR UNIT ABOVE INDOOR SECTION LINE SET ST-A1345-08-00 Figure 5 For applications with the outdoor unit above the in- • Insulated vapor line full length. door 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
4.0 INSTALLATION 4.6 Initial Leak Testing 4.7 Evacuation Indoor coils have only a holding charge of dry Evacuation is one of the most important parts of the nitrogen. Keep all tube ends sealed until connections entire installation and service procedure. The life are to be made. -
Page 23: Final Leak Testing
4.0 INSTALLATION 4.9 Control Wiring WARNING: Turn off electric power at the fuse box or service panel before making any electrical connections. Also, the ground connection must be completed before making line voltage connections. Failure to do so can result in electrical shock, severe personal injury, or death. - Page 24 4.0 INSTALLATION For indoor units using an ECM motor, the schematic below shows the additional relay to drive the system to 2 stages of indoor airflow. The low stage tap should be selected to deliver 75% of the high stage airflow. Stage 2 Stage 24V Thermostat...
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Page 25: Conventional 24Vac Thermostat Control Wiring Connections
Control Wiring Connections The EcoNet enabled RD17AZ Series heat pumps are The RD17AZ series of heat pumps allow the installer to specifically designed to be matched with and EcoNet use conventional 24 VAC control wiring and a conventional enabled air-handler or gas furnace and the EcoNet thermostat for limited unit operation. -
Page 26: Econet ™ Communication Wiring Connections
18 AWG thermostat wire. Do not use phone cord to connect indoor The RD17AZ outdoor unit is factory equipped with and outdoor units. This will damage the controls. a 24VAC transformer in the outdoor unit for use The EcoNet™... -
Page 27: Power Wiring
4.0 INSTALLATION 4.10 Power Wiring it is important that proper electrical power is available Power wiring must be run in a rain-tight conduit. Conduit at the heat pump power terminal block. The acceptable must be attached to the hole in the bottom of the control operating voltage range is shown below. -
Page 28: System Start-Up And Refrigerant Charging
5.0 SYSTEM START-UP AND REFRIGERANT CHARGING 5.1 System Start-Up Overview 5.3 EcoNet Control Center Set- ™ Once the system hardware and wiring has been properly installed, the next step is to start the system up, verify indoor air-flow, and adjust the refrigerant charge. To Follow the set-up instructions included with the assure optimum comfort, efficiency, and reliability, it EcoNet... -
Page 29: Entering Charge Mode Using Econet ™ Control Center Service Menu
5.0 SYSTEM START-UP AND REFRIGERANT CHARGING 5.6 Entering Charge Mode 5.5 Entering Charge Mode Using When Using a Universal EcoNet Control Center Service ™ Outdoor Control Menu 1. Set the thermostat to the cool or heat mode 1. Set the "Mode" to the "OFF" position. depending on which mode the system is to be 2. -
Page 30: Indoor Air-Flow Verification
Once the indoor air-flow is verified, the indoor air-flow trim Fortunately, when the RD17AZ outdoor unit is matched adjustment may be changed to suit the installation to the correct air-handler or furnace/coil combination and should be done prior to final charge adjustment. -
Page 31: Measurement Device Set-Up
5.0 SYSTEM START-UP AND REFRIGERANT CHARGING 5.8.1 Measurement Device Set-Up 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. 2. Attach the low-pressure hose to the exterior suction port located between the two service valves that is connected to the suction tube between the reversing valve and compressor. -
Page 32: Final Charging By Liquid Subcooling
5.0 SYSTEM START-UP AND REFRIGERANT CHARGING requirement for the given outdoor and indoor saturation temperature for R-410A at the conditions, add charge. If the measured liquid measured liquid pressure. pressure is above the listed requirement for the Liquid Saturation Temperature, SAT°= _____°F given outdoor and indoor conditions, remove [°C]. -
Page 33: Normal Sequence Of Operation
6.3 Low Ambient Cooling Mode 6.1 Cooling and Heating Mode In some installations, a requirement exists for cooling The RD17AZ unit has several modes of operation. a controlled air space when the outdoor ambient is These modes are listed and described below. -
Page 34: Dual Fuel Applications - Heating Mode
6.0 NORMAL SEQUENCE OF OPERATION 6.5 Dual Fuel Applications – The indoor air-handler or gas furnace is directed to supply supplemental heat Heating Mode to prevent cold air from being discharged from the supply registers during the If the building load should exceed the heat pump defrost cycle. -
Page 35: Components & Controls
Board Features 4. OAT 5. COIL/OST Connections 6. OLT/CPT RD17AZ outdoor units are equipped with a 7. Suction Pressure Tranducer Universal Outdoor Control (UODC) that interfaces 8. Liquid Pressure Tranducer with the inverter, EcoNet Control Center, and 9. Reversing Valve... -
Page 36: Power Inverter Compressor Control
Fan speed. When the inverter identifies a condition Control that could potentially result in compressor or inverter RD17AZ outdoor units are equipped with a power damage, it automatically reduces the compressor inverter that varies the compressor speed to match speed until a more reliable operating condition is... -
Page 37: Active System Protection Features
8.0 ACTIVE SYSTEM PROTECTION FEATURES The controls found in the RD17AZ outdoor units If there are 3 low pressure faults in the same call for are designed to prevent the system from operating cooling or during 120 minutes of continuous heating... -
Page 38: Overcurrent And Current Imbalance
8.0 ACTIVE SYSTEM PROTECTION FEATURES 8.5 Overcurrent and Current 8.8 Inverter Over Temperature Imbalance If the internal inverter temperature sensors detect excessive temperatures within the inverter, the inverter If the compressor current exceeds an acceptable will reduce the speed of the compressor or shut the level for the compressor or inverter, the inverter compressor down until the temperatures drop to an will reduce the compressor speed to allow the... -
Page 39: Sensor Failure Default Operation
8.0 ACTIVE SYSTEM PROTECTION FEATURES 8.10 Sensor Failure Default Operation If the controls sense an externally connected sensor be displayed on the EcoNet Control Center and has failed, the system will enter a fail safe operating Universal Outdoor Control identifying which sensor mode and will continue to condition the space has failed. -
Page 40: Diagnostics & 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. com. - Page 41 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.com.
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Page 42: Checking Transducers & 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 43 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.1 Checking Transducers & Temperature Sensors (cont.) TEMPERATURE SENSORS: All the temperature sensors/thermistors used in the Apply resistance measurements to the chart found equipment use the same scale of 10,000 Ohms at below and compare to the control. 77ºF (25ºC).
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Page 44: 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 45: Service Analyzer Charts
9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts COMPRESSOR OVERHEATING – HIGH DISCHARGE TEMP SYMPTOM POSSIBLE CAUSE REMEDY Low charge Check system charge. Verify suction thermistor operation Replace thermistor. (10k thermistor) Verify pressure transducer operation input and Replace thermistor and/or harness and/or control board. output voltage Restricted cap tube, TXV Faulty metering device, inadequate suction... - Page 46 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) COMPRESSOR OVERHEATING – HIGH DISCHARGE TEMP (cont.) SYMPTOM POSSIBLE CAUSE REMEDY Low charge Check system charge. Dirty coil Short cycling of Low evaporator airflow Dirty filter compressor (cont.) Duct too small or restricted Faulty internal overload Replace compressor.
- Page 47 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) LOSS OF LUBRICATION SYMPTOM POSSIBLE CAUSE REMEDY Compressor failures Vapor line tubing too large Reduce tubing size to improve oil return. Low charge Check system charge. Low suction pressure Refrigerant leaks Repair and recharge.
- Page 48 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) THERMOSTATIC EXPANSION VALVES SYMPTOM POSSIBLE CAUSE REMEDY Recover charge, replace filter-drier, evacuate system, Moisture freezing and blocking valve recharge. Dirt or foreign material blocking valve Recover charge, replace filter-drier, evacuate system, recharge Low refrigerant charge Correct the charge.
- Page 49 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Service Analyzer Charts (cont.) THERMOSTATIC EXPANSION VALVES (cont.) SYMPTOM POSSIBLE CAUSE REMEDY Dirty filter Dirty coil Reduced airflow Low load Wrong duct size Restricted duct Thermostat setting Advise customer. Refrigerant drainage from flooded evaporator Compressor flood Install trap riser to the top of the evaporator coil.
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Page 50: Troubleshooting Tips
9.0 DIAGNOSTICS & TROUBLESHOOTING 9.4 Troubleshooting Tips Cooling Mode Trouble Shooting 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) Low Indoor Airflow Dirty Outdoor Coil... -
Page 51: Outdoor Unit Maintenance
10.0 OUTDOOR UNIT MAINTENANCE 10.1 Outdoor Coil Cleaning The outdoor fan draws air across the coil during from the inside out is the most effective method of operation which results in contaminants collecting on cleaning the coil. The exterior louver panels and unit and between the aluminum fins. -
Page 52: Wiring Diagram
11.0 WIRING DIAGRAM 11.1 Wiring Diagram - Heat pump ELECTRICAL WIRING DIAGRAM 2/3 TON RD17AZ... - Page 53 11.0 WIRING DIAGRAM 11.2 Wiring Diagram - Air Conditioner ELECTRICAL WIRING DIAGRAM 4/5 TON RD17AZ...
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Page 54: Appendix
12.0 APPENDIX 12.1 Agency Performance Audit Test Instructions Performance audit testing a (-)P17AZ heat pump in a a. Pressing the “Settings” button on the home Coil Only configuration only requires installation per screen followed by pressing the “humidity” this manual and controlling the unit using traditional button. - Page 55 12.0 APPENDIX 12.1 Agency Performance Audit Test Instructions (cont.) the Aux 1 input on the air handler or furnace 9. Exiting the Test Mode control board is closed and no alarms are NOTE: While the test mode is active the active.
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