LG R5TT20F-SA0 Manual

LG R5TT20F-SA0 Manual

Heat pump water heater

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Printed in Sep. 12. 2023

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Summary of Contents for LG R5TT20F-SA0

  • Page 1 Printed in Sep. 12. 2023...
  • Page 2 Heat Pump Water Heater 134a 0 Hz (R 1. Models Line Up 2. Nomenclature 3. Specification 4. Function List 5. Dimensional Drawings 6. Wiring Diagrams 7. Refrigerant Cycle Diagrams 8. Capacity Tables 9. Capacity Coefficient Factor 10. Operation Range Electric Characteristics 12.
  • Page 3: Models Line Up

    Heat Pump Water Heater - 60 Hz ( R134a) 1. Models Line Up Nominal Volume Category Picture Chassis Model Name [L(gal)] R5TT20F-SA0 220 (58)
  • Page 4 Capacity Ex. “20” → 200 liters Indoor unit platform F: Frontier Outdoor unit platform -: Packaged (No outdoor unit) S: Frontier Silver Look/Color B: Frontier Black Function A: Smart function + Hybrid mode Serial No. LG Model Development Serial No.
  • Page 5: Specifications

    Heat Pump Water Heater - 60 Hz ( R134a) 3. Specifications Buyer Model R5TT20F-SA0 Set (Indoor / Outdoor) Unit Factory Model R5TT20F-SA0 Volume (Norminal) 58(220L) Volume (Rated) 52(197.7L) 3.75  Gallon(L) 66(249.8) FHR (Turbo Mode) Gallon(L) 80(302) Annual Energy Consumption 866  Upper Element Wattage (208V / 240V) 3.8 / 5.0 Power Input Lower Element Wattage (208V / 240V) 3.8 / 5.0 Energy Star Tax Credit Power Supply Ø, V, Hz 1Φ,208-240V,60Hz Available Voltage Range 176 ~ 276...
  • Page 6 Heat Pump Water Heater - 60 Hz ( R134a) 3. Specifications Buyer Model R5TT20F-SA0 Set (Indoor / Outdoor) Unit Factory Model R5TT20F-SA0 High Side 2.0MPa / 290 PSI Design Pressure (System) Low Side 0.9MPa / 130.5 PSI Max Working Pres 150 PSI (1034 kPa) sure (Water Tank) Minimum Circuit Ampacity 30.1 Circuit Breaker Power Supply Cable ㎟ 19, 12.7 Drain Hose Size 3/4, 1/2 Type R134a Pre Charge 23  Refrigerant Additional Charge oz./ft.
  • Page 7: Function List

    Heat Pump Water Heater - 60 Hz (R134a) 4. Function List Category Function Description Prefilter (Washable / Anti-Bacteria) Capture dust particles over 10μm in size and finer bacteria. Purifying Self Diagnosis Self-diagnostic for product protection. Reliability De-ice Control (Defrost) In the heating mode, de-icing of the outdoor heat exchanger automatically. HeatPump This mode minimizes power consumption by using only heat pump for heating.
  • Page 8: Dimensional Drawings

    Heat Pump Water Heater - 60 Hz ( R134a) 5. Dimensional Drawings R5TT20F-SA0...
  • Page 9: Wiring Diagrams

    Heat Pump Water Heater - 60 Hz ( R134a) 6. Wiring Diagrams R5TT20F-SA0...
  • Page 10: Refrigerant Cycle Diagrams

    Heat Pump Water Heater - 60 Hz (R134a) 7. Refrigerant Cycle Diagrams Heating Defrosting Compressor Heat Exchanger Heat (Condenser) Exchanger (Evaporator) Water Tank Description PCB Connector Thermistor for discharge pipe temperature CN_TH2 Thermistor for evaporating temperature CN_TEMP_AIR Thermistor for indoor air temperature CN_TEMP_AIR Thermistor for suction pipe temperature CN_TH1...
  • Page 11: Capacity Table

    Heat Pump Water Heater - 60 Hz (R134a) 8. Capacity Tables 8.1 Capacity table 1) COP Setting temp.(℃) Initial Ambient water tank Auto Mode Heatpump Mode Turbo Mode temp. temp.(℃) 1.69 1.45 1.25 1.10 0.99 0.93 2.72 2.64 2.51 2.33 2.12 1.86 1.69 1.45 1.25 1.10 0.99 0.93 2.57 1.66 1.46 1.31 1.20 1.14 2.57 2.49 2.36 2.19 1.97 1.71 1.90 1.66 1.46 1.31 1.20 1.14...
  • Page 12: Performance Graph

    Heat Pump Water Heater - 60 Hz (R134a) 8. Capacity Tables 8.2 Performance Graph Ambient Recovery Time (hour) COP of High Draw COP of Low Draw Temperature ℉ Auto Turbo Auto Turbo Auto Turbo 3.57 8.69 3.49 1.12 2.13 1.14 2.32 2.37 1.49...
  • Page 13 Heat Pump Water Heater - 60 Hz ( R134a) 9. Capacity Coefficient Factor 9.1 Capacity Change Rate (%) Duct Length ( 1m / 3.3ft ) Model Duct Type. Diameter Not Ducted 8"(Φ200) 6"(Φ150) R5TT20F-SA0 COP(%) 100.0% 96.7% 92.0%...
  • Page 14 Heat Pump Water Heater - 60 Hz ( R134a) 9. Capacity Coefficient Factor 9.2 Maximum Duct Length Allowable duct length Case 1 Case 2 Case 3 Case 4 Case 5 System Static Case Case 1 Case 2 Case 3 Case 4 Case 5 Pressure Size...
  • Page 15: Operation Range

    Heat Pump Water Heater - 60 Hz (R134a) 10. Operation Range R5TT20F-SA0...
  • Page 16: Electric Characteristics

    Heat Pump Water Heater - 60 Hz (R134a) Electric Characteristics R5TT20F-SA0 Unit Power Compressor Model Indoor Unit Type Hz Voltage Voltage Range Cool Heat Min : 187 R5TT20F-SA0 60 208 / 240 30.1 30.0 0.22 Inverter Max : 276 Note 1.
  • Page 17: Sound Pressure Level

    12.1 Sound Pressure Level Heating Model Auto Turbo/HeatPump R5TT20F-SA0 Note ‐ Sound measured at 1 m away from the unit. ‐ Data is valid at free field condition. ‐ Data is valid at nominal operation condition. ‐ Reference acoustic pressure 0dB=20μPa.
  • Page 18 Heat Pump Water Heater - 60 Hz (R134a) 12. Sound Levels (Reference Data) R5TT20F-SA0 Heating ▲ Turbo/HeatPump ● Auto NC-65 NC-60 NC-55 NC-50 NC-45 NC-40 NC-35 NC-30 NC-25 Approximate NC-20 Hearing Threshold NC-15 1000 2000 4000 8000 Octave Band Center Frequency (Hz)
  • Page 19 Heat Pump Water Heater - 60 Hz (R134a) Carrying Method • Moving or installation of the appliance requires two or more people. • Make sure you both have a good grip before lifting. • Use an appliance dolly with strap to move the water heater.
  • Page 20: Installation

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USE Your safety and the safety of others are very important. We have provided many important safety messages in this manual and on your appliance. Always read and follow all safety messages.
  • Page 21: Safety Precaution

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation Safety Precaution Water Temperature Setting DANGER Water temperature above 125°F can cause severe burns instantly or death from scalding. Be sure to read and follow the warnings on the label pictured below. This label is also located on the front of the water heater.
  • Page 22: Local Installation Regulations

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation DANGER Higher water temperature increases the potential for Hot Water SCALDS Water temperature in the heater is regulated by the buttons on display. The water temperature of this water heater is factory set to 120°F to comply with safety regulations. For information about adjusting the water temperature, refer to the operation section in this manual.
  • Page 23: Important Safety Instructions

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation Important Safety Instructions WARNING To reduce the risk of explosion, fire, death, electric shock, scalding or injury to persons when using this product, follow basic precautions, including the following: Children in the Household: This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for...
  • Page 24 Heat Pump Water Heater - 60 Hz (R134a) 14. Installation • Install the panel and the cover of the control box safely. • Do not touch heat exchanger fins with your bare hands. Otherwise you may get a cut in you hands.
  • Page 25 Heat Pump Water Heater - 60 Hz (R134a) 14. Installation CAUTION To reduce the risk of minor injury to persons, malfunction, or damage to the product or property when using this product, follow basic precautions, including the following: INSTALLATION • Install the product on a firm and level floor. •...
  • Page 26: Parts And Functions

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation INSTALLATION Parts and Functions Top cover Air intake vents Junction box Air filter Front panel Display décor / Control panel Upper element cover Front décor Lower element cover Heating element Opening for drain valve Water inlet Opening for T&P relief valve...
  • Page 27 Recommended Accessories: Figure Name Figure Name Thermal Drain pan expansion tank Pressure Thermostatic reducing valve mixing valve Dielectric Union...
  • Page 28 * If copper piping is used, The dielectric unions(field supply) must be installed at the water connections.
  • Page 29: Select The Best Location

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation Select the best Location Minimum Clearances NOTE Minimum room size: • Installation in a confined space without proper 700 ft ventilation will lead to higher power consumption. 1.5ft(45cm) • Auxiliary drain pan MUST be installed in compliance with local codes.
  • Page 30: Unpacking And Removing Shipping Bolts

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation Thermal Expansion Unpacking and Removing Shipping Bolts Determine if a check valve is present on the inlet water line. Check with your local water utility. A check valve located in cold water inlet line will NOTE create a “closed water system”.
  • Page 31: Installing Drain Valve

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation Installing Drain Pan Installing Drain Valve Use drain valve included in packing. NOTE Apply Teflon tape on the NPT end to prevent • Most codes require placing the water heater on leaking.
  • Page 32 Heat Pump Water Heater - 60 Hz (R134a) 14. Installation Installing T&P Relief Valve - The end of the discharge pipe should not be threaded or concealed and should be protected from freezing. Use T&P relief valve included in packing. - Do not insert or install any type of valve, Apply Teflon tape on the NPT end to prevent restriction, or reducer coupling in the discharge...
  • Page 33: Installing Condensate Drain Lines

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation Installing Condensate Attach elbow with 3/4” slip &3/4”NPT to the primary drain connection. Drain Lines NOTE • When making drain fitting connections to the drain tubing, DO NOT overtighten. Overtightening fittings could crack or damage the condensate drain pan.
  • Page 34 If cooper piping used, The water heater should always be connected dielectric connections (field supply) to avoid corrosion caused by electric currents common in copper water pipes. For ease of disconnecting the water heater for service or replacement, the installation of unions is recommended on the water connections.
  • Page 35: Making Electrical Connections

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation Making Electrical NOTE Connections • Use flexible conduit only. • Use crimp type connector for wiring. • The ground wire should be longer than th WARNING common wires. Disconnect all power before working on any electrical connections.
  • Page 36: Safety Controls

    Heat Pump Water Heater - 60 Hz (R134a) 14. Installation Safety Controls Insulation Blanket Kits External insulation blanket, available to the general public, for water heater is not CAUTION necessary. You must have a qualified person investigate the cause of the high The manufacturer’s warranty does not cover any temperature condition and take damage or failure caused by installing or using...
  • Page 37 Water connections tight and free of leakage but DO NOT overtighten. If cooper piping used, connect the dielectric unions(field supply) to prevent corrosion. Flexible water connections recommended.
  • Page 38: Display Screen

    To select the auto mode. To select the turbo mode. To select the Vacation mode. Set schedule mode only in LG ThinQ application. To set the desired water temperature. To adjust the desired water temperature. To enable the Wi-Fi pairing.
  • Page 39 Hot Water SCALDS. heater from freezing. The vacation duration can be set or modified between 1 and 90 days via LG ThinQ app. The water temperature will be maintained according to the setting temperature on Display CAUTION and can be adjusted from 95°F to 140°F.
  • Page 40 http://partner.lge.com 2019-2023...

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