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Rheem P17 Series, Installation Instructions Manual

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Rheem P17 Series Installation Instructions Manual Download Page 19

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4.0 INSTALLATION

For applications with the outdoor unit above the 

indoor coil the following is required: 
•  Insulated liquid line in unconditioned space only.
 • Follow the proper line sizing, maximum linear and 

equivalent length, maximum vertical separation, 

charging requirements, and oil level adjustments 

spelled out in this document. 

•  Verify at least 5°F [2.8ºC] of liquid subcooling at 

the outdoor unit prior to expansion device in the 

heating mode.

4.5.2.3 Outdoor Unit Above Indoor Coil

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Figure 5

Summary of Contents for P17 Series

Page 1: ...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 IMPROPE...

Page 2: ...s 28 5 8 4 Final Charging by Liquid Subcooling 29 5 8 5 R 410ATemperaturePressureChart 29 5 9 Completing Installation 29 6 0NORMALSEQUENCEOFOPERATION 30 32 6 1 Cooling Mode 30 6 2 On Demand Cooling De...

Page 3: ...injury resulting from the use of such unauthorized components accessories or devices This product is not approved for installation at 2000 meters 6561 feet above sea level or higher Installation at h...

Page 4: ...al 2 3 Importance of Quality Installation A quality installation is critical to assure safety reliability comfort and customer satisfaction Strict adherence to applicable codes the information in this...

Page 5: ...s To assure many years of reliable operation and optimum customer comfort and to assure the outdoor unit warranty remains valid an air handler model or indoor coil furnace combination should be select...

Page 6: ...t Ampacity Amperes Rated Load Amperes RLA Locked Rotor Amperes LRA Minimum Amperes Maximum Amperes 24 1 60 208 230 16 16 35 0 8 21 21 25 25 35 35 36 1 60 208 230 16 3 16 3 35 0 8 22 22 30 30 35 35 48...

Page 7: ...y At pressures above 1 atmosphere a mixture of R 410A and air can become combustible R 410A and air should never be mixed in tanks or supply lines or be allowed to accumulate in storage tanks Leak che...

Page 8: ...ndations and requirements will take precedence Refrigerant piping and wiring should be properly sized and kept as short as possible to avoid capacity losses and increased operating costs Locate the un...

Page 9: ...nal spaces of the owner and those spaces on adjoining property To prevent noise transmission the mounting pad for the outdoor unit should not be connected to the structure and should be located a suff...

Page 10: ...6 New Haven 15 MAINE NEBRASKA Bismarck 25 Knoxville 8 La Crosse 32 DELAWARE Caribou 100 Grand Island 30 Fargo 34 Memphis 5 Madison 32 Wilmington 13 Portland 62 Lincoln 20 Williston 25 Nashville 8 Milw...

Page 11: ...ng line lengths Variable speed systems present an additional challenge due to the fact that the system operates at a significantly reduced refrigerant flow rate for a significant percentage of operati...

Page 12: ...Table 2 for capacity loss multipliers for various vapor line diameters and equipment line lengths This table does not account for any capac ity loss due to heat gain or loss from the environ ment It...

Page 13: ...Absorption of heat prior to expansion device Excessive vertical separation between the outdoor unit and indoor coil Restricted liquid linear filter drier Kinked liquid line The following Refrigerant...

Page 14: ...3 8 3 4 25 0 99 50 0 96 50 0 94 50 0 92 NR NR 1 2 3 4 25 0 99 50 0 96 50 0 94 50 0 92 NR NR 3 8 7 8 25 1 00 50 0 99 50 0 98 50 0 97 45 0 96 30 0 95 1 2 7 8 25 1 00 50 0 99 50 0 98 50 0 97 50 0 96 50 0...

Page 15: ...98 15 0 98 15 0 97 9 53 3 8 19 05 3 4 8 0 99 15 0 96 15 0 94 15 0 92 NR NR 12 7 1 2 19 05 3 4 8 0 99 15 0 96 15 0 94 15 0 92 NR NR 9 53 3 8 22 23 7 8 8 1 00 15 0 99 15 0 98 15 0 97 14 0 96 9 0 95 12 7...

Page 16: ...liquid refrigerant can be heated to form vapor insulating the liquid line is required Use clean dehydrated sealed refrigeration grade tubing Always keep tubing sealed until tubing is in place and con...

Page 17: ...INSULATED LIQUID LINE IN UNCONDITIONED SPACE INSULATED VAPOR LINE FULL LENGTH Figure 3 For applications with the outdoor unit and indoor unit on the same level the following is required Insulated liq...

Page 18: ...ansion device Verify that the pressure drop is not greater than 50 PSI 345 kPa For elevations greater that 25 8 m a lower sub cooling can be expected Verify there is at least 5 F 2 8 C of liquid sub c...

Page 19: ...d space only Follow the proper line sizing maximum linear and equivalent length maximum vertical separation charging requirements and oil level adjustments spelled out in this document Verify at least...

Page 20: ...ing with a clean dry cloth before soldering Clean out debris chips dirt etc that enters tubing or service valve connections Wrap valves with a wet rag or thermal barrier compound before applying heat...

Page 21: ...cuation see Sections 4 7 and 4 8 for evacuation and final leak testing The vapor line must be insulated for its entire length to prevent dripping sweating and prevent performance losses Closed cell fo...

Page 22: ...trol Center While they are also designed to be controlled by a conventional 24VAC 2 stage thermostat many features and benefits are lost 4 9 2 EcoNet Control Center Installation The EcoNetTM Control C...

Page 23: ...uch screen Refer to the air handler or furnace installation manual and the EcoNet Control Center installation manual for further details on setting up the system and available adjustment options 4 9 4...

Page 24: ...rmostat W BK W BL Y Y BL BL R BR G BK W1 W2 Y1 Y2 B R C G ODD B Y1 Y2 G E W1 W2 C R Y Y2 B R C W TYPICAL 2 STAGE THERMOSTAT P17 HEAT PUMP WITH ELECTRIC HEAT USING A HUMIDISTAT FOR HUMIDIFICATION Field...

Page 25: ...units The EcoNetTM Control Center or thermostat should be switched to the off position initially Within 45 seconds of power being applied the EcoNetTM Control Center should detect the indoor and outdo...

Page 26: ...ayed on the screen and then touch Stop Test Then touch the left arrow on the screen to return to the main screen 10 If the indoor blower continues to run continu ously after exiting the Charge Mode cy...

Page 27: ...not reasonably close to the desired indoor air flow confirm cooling dehumidification is disabled the indoor air flow trim adjustment is set to 0 and verify the model numbers of the indoor and outdoor...

Page 28: ...ce adjust the refrigerant charge based on the actual line set length If the entire system has been evacuated add the total calculated charge IMPORTANT Charging by weight is not always accurate since t...

Page 29: ...e Temperature Pressure Chart below to note the corresponding saturation temperature for R 410A at the measured liquid pressure Liquid Saturation Temperature SAT _____ F _____ C 3 Note the liquid line...

Page 30: ...ontrol Center can be configured for On Demand Dehumidification for HMV air handlers and 802V 96V 97V and 98V gas furnaces This feature allows the system to automatically increase the level of dehumidi...

Page 31: ...ut down and heating responsibility will be transferred to the gas furnace An outdoor ambient temperature can be set in the EcoNetTM Control Center to direct the system to automatically switch to gas h...

Page 32: ...a slightly different manner When a call for 1st stage cooling or heating is received from the 2 stage thermostat the compressor will start and operate at the minimum capacity level and the air handler...

Page 33: ...ump As environmental variables change it is possible to have liquid refrigerant flood back to the compressor Although the P17 designs have been specified to minimize this from happening occasions can...

Page 34: ...te if the EXV is in the process of opening or closing The following is a list of features on the VSODC and location of each 1 Thermostat Terminals 2 Communication wire terminals 3 Modbus unitary inver...

Page 35: ...7 0 COMPONENTS CONTROLS 7 7 5 Superheat Offset DIP Switch Settings DIP Switch Bank on the Right Although the factory programmed superheat setting is considered to be the most efficient setting for eac...

Page 36: ...3 MAXIMUM Speed 2 INTERMEDIATE Speed 1 MINIMUM Speed SH Superheat Measurement The display is to show the following options HI Superheat is 5 F 2 8 C away from SH_SP hI Superheat is between 5 2 8 C an...

Page 37: ...stator for serviceability An internal check valve is provided that assures unrestricted flow in the reverse direction when the system is operating in the cooling mode For the P17 model line there are...

Page 38: ...h the changing capacity needs of the conditioned space The inverter interfaces with the Variable Speed Outdoor Control VSODC which communi cates the level of system capacity that is required to the in...

Page 39: ...played on outdoor unit status screen P17 heat pumps are equipped with a suction line thermistor for the purposes of measuring suction gas temperature during the heating mode The measured temperature i...

Page 40: ...until the compressor speed returns to normal speed based on the capacity demand 8 4 Off Cycle Refrigerant Migration Stator Heat Refrigerant can migrate to a cold compressor during the off cycle which...

Page 41: ...the electrical power to both the indoor and outdoor units for 1 minute and then reconnecting power NOTE If the system experiences a low refrigerant pressure lock out the system should be evaluated to...

Page 42: ...Protec on Compressor Stator Heat The compressor opera on outlined in the applicable sec ons will be performed once an hour The compressor stator heat will be kept from opera ng 8 14 Sensor Failure Def...

Page 43: ...played on the dual 7 segment LEDs and a call for unit operation is present the TEST mode causes 1 A t to display momentarily on the dual 7 segment display 2 The compressor will start and the outdoor f...

Page 44: ...TPUPT T Y U PTLY HP UP PTLY OHZ L_WPYLK VY WYLZZ OL I VU V KLMLH ZOVY J JSL KLSH HUKI 5V JVTTHUK MVY UP VWLYH PVU 5VYTHS VWLYH PVU 9 4 Status and Diagnostic Codes 9 0 DIAGNOSTICS TROUBLESHOOTING Diagn...

Page 45: ...vice window Current Faults or in the Fault History and will be time and date stamped VSODC Variable Speed Outdoor Unit Control EcoNet control board fault code is what will be displayed on the VSODC 9...

Page 46: ...rvice window Current Faults or in the Fault History and will be time and date stamped VSODC Variable Speed Outdoor Unit Control EcoNet control board fault code is what will be displayed on the VSODC D...

Page 47: ...at the EcoNet Control Center under Service window Current Faults or in the Fault History and will be time and date stamped VSODC Variable Speed Outdoor Unit Control EcoNet control board fault code is...

Page 48: ...rvice window Current Faults or in the Fault History and will be time and date stamped VSODC Variable Speed Outdoor Unit Control EcoNet control board fault code is what will be displayed on the VSODC 9...

Page 49: ...at the EcoNet Control Center under Service window Current Faults or in the Fault History and will be time and date stamped VSODC Variable Speed Outdoor Unit Control EcoNet control board fault code is...

Page 50: ...rvice window Current Faults or in the Fault History and will be time and date stamped VSODC Variable Speed Outdoor Unit Control EcoNet control board fault code is what will be displayed on the VSODC 9...

Page 51: ...at the EcoNet Control Center under Service window Current Faults or in the Fault History and will be time and date stamped VSODC Variable Speed Outdoor Unit Control EcoNet control board fault code is...

Page 52: ...this fault occurs before VSODC will restart the compressor If this fault occurs 3 times during a single call for operation the VSODC will lock out the compressor to keep it from continuing to operate...

Page 53: ...is a 5 minute delay after this fault occurs before VSODC will restart the compressor If this fault occurs 3 times during a single call for operation the VSODC will lock out the compressor to keep it f...

Page 54: ...or to keep it from continuing to operate and flash an L on the dual 7 segment LEDs followed by a 15 IMPORTANT This mode of active protection must be manually reset L16 Microprocessor Fault A912_O Inve...

Page 55: ...te and flash an L on the dual 7 segment LEDs followed by a 16 IMPORTANT This mode of active protection must be automatic reset once the discharge line thermistor fault is corrected L16 Discharge Tempe...

Page 56: ...e There are two scenarios that will cause active protection during an LPC trip when the unit is in the heating mode Active Protection With Hard Lockout If the LPC opens three 3 times within 120 minute...

Page 57: ...t successful in bringing the compressor back into the designed operating envelope then the compressor will be kept from operating IMPORTANT It is common during startup and shutdown for the compressor...

Page 58: ...C identifies issue s reading the model data from the memory card the VSODC will automatically shut the compressor off and keep it from operation When this fault occurs the VSODC will lock out the comp...

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Page 62: ...frost Sensor in Wrong Location Wrong Defrost Timer Setting Reversing Valve Stuck Welded Reversing Valve Relay on Control Board Loose Defrost Sensor Check Coil Sensor Connector Defrost System Inadequat...

Page 63: ...vision Addition and Subtraction Our formula doesn t have any Exponents so we can eliminate that Also there is no Addition Multiplication and Division similar to Addition and Subtraction priority comes...

Page 64: ...made with the sensor disconnected from the control board Again comparing the results must be done against a calibrated tester A glass of water mixed completely with ice chips and given several minutes...

Page 65: ...Refrigerant undercharge At inverter input terminals voltage must be between 187 252VAC when unit is operating Add refrigerant Registers sweat Low indoor airflow Increase speed of blower or reduce res...

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Page 71: ...ence of the suction line Ensure sensing bulb is located properly Check for blocked distributor tubes Recover refrigerant change filter drier evacuate system and recharge Moisture freezing and partiall...

Page 72: ...e Transducer or Faulty Measurement Low Low High High Poorly Insulated Indoor Vapor Line Thermistor or Bad Thermistor High High Low Low HEATING MODE TROUBLESHOOTING TIPS SYSTEM PROBLEM INDICATORS DISCH...

Page 73: ...nnect electrical power to the unit before removing the top panel or any electrical panel as the fan motor could start at any time and live electrical connections will be exposed Annual cleaning of the...

Page 74: ...ESS CONT LPC LOW PRESSURE CONTROL TM THERMISTOR SENSOR DISCHARGE LINE THERMISTOR LED 3 GREEN EXV OPEN LED LED 5 AMBER EXV CLOSE LED OAT OUTDOOR AIR TEMP OFM OUTDOOR FAN MOTOR LPT FOR FUTURE USE OST SU...

Page 75: ...air handler settings or furnace settings screen select N C next to the Aux Input 1 Config label e Change the Aux 1 Config type to N C by pressing the orange up or blue down arrows at the bottom of th...

Page 76: ...sense an open state between the Aux 1 and the Aux C terminals 9 Exiting the Test Mode NOTE While the test mode is active the thermostat will not permit return to the home screen a To turn the unit of...

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