Rinnai RUC80i Training Program
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Rinnai RUC80i Training Program

Condensing tankless water heater, level iii, service fundamentals
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Rinnai Condensing Tankless
Water Heater Training Program
Level III
Service Fundamentals
Enhancing Lives By Changing The Way Water Is Heated
© 2016 Rinnai America Corporation
PROPRIETARY and CONFIDENTIAL
1
5/4/2018

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  • Page 1 Rinnai Condensing Tankless Water Heater Training Program Level III Service Fundamentals Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 2 Hydronics Oil Service – 6 units for NATE, please Oil Heating (Air) Installation – 6 units notify the instructor. Oil Heating (Air) Service – 6 units Enhancing Lives By Changing The Way Water Is Heated © 2014 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 3 Rinnai and Commercial Series Condensing Water Heaters. C199 Commercial Series RU/RUC/RUR Series. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 4 ➢ Warranty Department – warranty claim issues. Available from 8 a.m. to 5 p.m. EST, Monday- Friday. ➢ Technical Support Department – technical issues related to the function and repair of Rinnai products. Available in the office from 8 a.m. to 8 p.m. EST, Monday – Friday AND 24/7/365 on call support for...

  • Page 5: Specifications

    7.6 GPM 5.4 GPM RUR98e REU-KBP3237WD-US C199i REU-KBD3237FFUDC-US 15.2K 199K 0.4 GPM 9.8 GPM 7.6 GPM 5.4 GPM Thermal C199e REU-KBD3237WDC-US Efficiency Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 6: Before Performing Service

    2. All major replacement parts are accompanied with replacement procedures. 3. Rinnai will pay reasonable labor for warranty parts changed during the labor warranty period. Normally one hour labor will be paid for most parts and two hours for the heat exchanger.
  • Page 7 Manometer (Volt/Ohm Meter) If Rinnai technical support assistance is required please have these tools available in order to speed up the troubleshooting process. Also, Rinnai needs to know the full model and serial number of the product. Have the front cover removed from the product, record and provide any relevant information such as gas pressures, set temperature, fault codes etc.

  • Page 8: Water Heater

    Water Heater DISASSEMBLY & REASSEMBLY The following procedures are for KB series water heaters. Other Rinnai models may vary slightly in design and service requirements. Please refer to each model’s install guide and service documentation for model specific information. PLEASE STAY WITH THE PRESENTATION DURING DISASSEMBLY AND REASSEMBLY.

  • Page 9: Front Panel Removal

    This will expose the 4 screws securing the front cover. Removing the four Phillips head screws and remove the front cover. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 10: Front Panel Information

    Front Panel Information Located inside the front cover panel of all Rinnai Tankless water heaters you will find a wiring diagram and technical data sheet. The technical data sheet contains operation, troubleshooting and service information including: Technical data sheet • Error code information •...

  • Page 11: Temperature Controller

    3. Remove the controller mounting bracket by removing the power wire clamp and the ground wire then the two screws at the bottom of the bracket. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 12 If the outlet water exceeds the set temperature by 6⁰F - 8⁰F the burners will be turned Off. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 13 58. These switches will close after the unit cools but the water heater must be reset by disconnecting and reapplying electrical power. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 14 The cause of this symptom should be investigated to prevent further problems. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 15 Overheat Protection and Safeties The Rinnai Safety “Line of Defense” Multiple layers of technology ensure safe operation If the heat exchanger If the outlet If the overheat If the heat exchanger If the thermal thermistor detects thermistor detects bimetal detects...

  • Page 16: Freeze Protection Operation

    Ceramic Heater examples NOTE: Adequate incoming power is required for the Thermistor #1 freeze protection system to operate correctly! Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 17: Combustion Fan

    Remove the tube. Remove the two screws securing the fan assembly to the burner assembly. Slide the fan forward and out of the cabinet. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 18 Gas pressure test port. c. Gas supply tube. 2. Sight Glass Plate. a. Flame rod. b. Thermocouple. c. Igniter electrode. d. Sight glass. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 19 NOTE: The gasket underneath must be replaced prior to reassembly. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 20: Manifold Assembly Removal

    Gas supply the burner assembly. pipe Pull the manifold forward away from the unit. Inspect the gasket underneath for any damage. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 21: Manifold Assembly

    Btu to meet the water flow and output temperature demands. Section 2 Section 1 Section 3 Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 22 2. Follow thermistor wiring back to the electrical connector. Disconnect and remove it from unit. Thermistor retainer clip RUR model shown. Electrical connector Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 23 2. Follow thermistor wiring back to the electrical connector. Disconnect and remove it from unit. RUC model RUR model shown here. shown here. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 24 51 and the water heater will continue to produce hot water, however, the Circ-Logic function will be disabled. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 25 10. Inlet water thermistor. Release any wire harnesses that may be attached to pipes or fittings that will come out with the exchanger assembly. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 26 5. Remove the black heat exchanger drain nipple (threaded) then the (2) screws securing the drain fitting to the bottom of the water heater cabinet. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 27 All 4 screws are in the lower metal support bracket underneath the secondary heat exchanger. 4. Carefully lift the heat exchanger assembly from the cabinet. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 28 9 screws at the bottom that secure it to the secondary heat exchanger. Exhaust duct assembly. Lower Support Bracket Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 29: Burner Assembly Removal

    2. Once the screws are removed, the burner assembly can be lifted off the heat exchanger assembly. NOTE: If the burner is removed, the gasket must be replaced. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 30: Burner Assembly Components

    Burner Assembly Components 1. Ceramic burners (two ceramic bricks, operates in three sections) 2. Igniter electrode. 3. Flame Rod. 4. Burner Thermocouple. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 31 (all screw locations are visible in illustration #2) NOTE: If the secondary heat exchanger is removed, the gasket must be replaced. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 32 Ensure the o-ring is intact. 5. Remove the remaining screw from the bottom of the unit and remove the gas valve from the cabinet. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 33 4. To remove the fitting, remove the three screws securing it to the bottom 1. Hot water outlet of the cabinet. 2. Heater 3. Thermistor Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 34 4. Disconnect the wiring harnesses for the servo motors (water flow servo & and bypass servo), the water flow sensor and the anti-freeze heater. 5. The assembly can now be removed from the cabinet. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 35 Note the order of removal and orientation CAUTION: The turbine can be Retainer of the components for ease of damaged if mishandled. Ring reassembly. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 36 The water flow turbine is not accessible from the bottom of the water heater as in other models. Internal Check Valve Assembly. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 37 The water inlet / filter assembly fitting is held in place with two screws as with the other models. Cold Water Inlet Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 38 ➢ Next remove the pipes from Inlet Fitting the bypass valve outlet. These pipes are removed as noted in a previous slide. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 39 3. Now the assembly can be removed from the water heater cabinet. Bypass Servo Water Flow Servo Internal Check Valve Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 40 2. Flow turbine removal and disassembly is the same as other RU models. Water Flow Servo Valve and Flow Turbine. Internal Check Valve Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 41 Water Heater NOTE: This opening is not used on indoor RUR models. A ceramic heater element is installed here on outdoor models. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 42 Then slide the pipe to the left to disconnect from the fittings. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 43 Disconnect the pipe by rotating the pipe to the right. Crossover Mode Crossover Mode Pipe Bypass Pipe rotated. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 44 The Pump Inlet fitting contains an internal check valve. Pump inlet and check valve. Retaining screws and clip. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 45 Pull the pump forward to remove from the cabinet. 3. Pump Drain Pump Mounting Screws Pump shown with inlet fitting in place. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 46 Pump Outlet Pump Inlet Pump Inlet Fitting Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 47: Pc Board Removal

    Make note of any receptacles that may not be used (3a). 4. When installing a new board ensure the dip switches are set correctly for you model and gas type. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 48: Accessory Wiring

    5. Cut wire to connect pump: For connecting an external circulation pump. RUR models have a built-in pump and will not have this harness). Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 49 • Ensure all connections are correct (solenoid valves, etc.) Do not place covers on units • Note: Do not apply power until the product is inspected by the instructor! Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 50 ELECTRICAL REQUIREMENTS TROUBLESHOOTING Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 51: Electrical Diagnostics

    On the other hand an incorrect value is a very good indication that the component is defective. For metering values, reference Rinnai’s Tankless Water Heater Service Manual —the “Electrical Diagnostic Points” section (model dependent) or each unit’s technical data sheet located inside the front cover.
  • Page 52 12 VDC. measuring 120 VAC. Probe Meter setting configuration for measuring for measuring less than Volts or 20,000 Ohms Ohms. (20KΩ). Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 53 (be sure to select the AC or DC amp range, the DC amp range is selected in the picture above) then reconfigure the test lead connections for measuring current, as shown above. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 54 ➢ NOTE: Compare reading to temperature range listed on tech sheet or service manual. ➢ Hold thermistor bulb in your hand and note the change in reading. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 55 86 ˚F 6.4 ~ 7.8K ohms 113 ˚F 3.6 ~ 4.5K ohms 140˚F 2.2 ~ 2.7K ohms 221 ˚F 0.6 ~ 0.8K ohms. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 56: Wiring Diagram/Schematic

    ARE READING THE CORRECT PAGE! • Note: The sections boxed in by dashed lines indicate components found on certain models but not others. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 57: Temperature Controllers

    Temperature Controllers Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 58 Temperature Controllers: MC-91-2 / MCC-91-2* MC-195T *for commercial use All current Rinnai models will accept up to four temperature controllers wired in parallel. NOTE: Only one MC-195T per unit. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation...
  • Page 59 Also used in a standard or commercial conjunction with other buttons version. for auxiliary functions. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 60 140⁰F by setting dip switch #5 in DIPSW1 (upper set of to the ON position switches) (if a controller is connected, switch #5 has no effect on temperature). Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 61 NOTE: The maximum set temperature for the RUS/RUCS and RUR98 water heaters is 140⁰F. (Installing a MCC-91-2 controller will NOT allow settings above 140⁰F). Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 62 OFF and #6 will be ON). ➢ The temperature can be increased to 140⁰F WITHOUT the controller by setting #5 to ON and #6 to OFF. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 63 140⁰F on the outdoor model: ➢ The included MC-91-2 controller MUST be connected and both SW5 and SW6 in DIPSW1 must be in the ON position. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 64 The extra wire needed for remote mounted controllers is to be field supplied. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 65 NOTE: In order for Circ-Logic to function on the RUR model, the MC-195T controller will need to be connected. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 66 120⁰F are obtained by dip switch settings. Commercial C199 models can achieve higher temperatures utilizing the standard MC-91-2 controller and dip switch settings. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 67 328 ft. (100 m). This distance will be reduced with additional controllers (see installation manual). • Additional controllers must all be wired in parallel. Temperature controller connection Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 68: Temperature Controller

    5 seconds. The controller will beep once the mute function has been activated. Repeat the procedure to reactivate the beep. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 69 *. To exit the information mode, repeat the procedure. * The remaining info modes are explained on the next page Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 70 Pump Hours X100 Total pump operation hours (RUR98 models only) open. Pump Cycles X100 Total pump operation times (RUR98 models only) Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 71 MAINTENANCE / FAULT CODES Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 72: Maintenance

    - Turn off all hot water tap. Disable bath fill, turn unit OFF then back ON. Bypass Servo failure - Replace bypass servo. - Ensure Rinnai approved venting materials are being used. - Check that nothing is blocking the flue inlet or exhaust. - Check all vent components for proper connections.
  • Page 73 – (Condensing models only) is operating (if equipped), ensure a secondary trap is not installed outside the unit. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation (Continued on next page) PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 74 - Damage to the water flow control valve or wiring / no feedback signal from valve to main circuit board. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation (Continued on next page) PROPRIETARY and CONFIDENTIAL...
  • Page 75 “A” and “B” test switches at the same time for approximately 5 seconds. The unit will return to normal operation and the LC# count will return to “0”. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 76 Not firing/no code 11, 12 11, 12, 52 70 – switches / PCB 11, 12 19 – 11, 12 electrical short to ground Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 77: Troubleshooting

    WATER REQUIREMENTS, MAINTENANCE TROUBLESHOOTING Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 78 • Troubleshooting tip: If after isolating the appliance from the plumbing system and gpm flow and output temperature are verified through the controller’s diagnostic tests, the unit is likely performing to manufacturer’s specifications. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 79 Remove the in-line filter at the cold water inlet and clean out any residue Place the filter back into the unit. Open shutoff valves V3 and V4. Restore electrical power to the water heater. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 80: Gas Requirements

    GAS REQUIREMENTS, MAINTENANCE TROUBLESHOOTING Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 81 • If any symptom exists suggesting a gas supply issue may be present, a gas manometer will be needed to verify incoming pressure. Rinnai tankless water heaters only need a single port manometer. Dual port or pressure differential manometers are not needed. Various...
  • Page 82 17. Turn on the electrical and gas supply. 18. Operate the unit and check for gas leaks. 19. Reinstall the front panel. Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...
  • Page 83 Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

  • Page 84: Troubleshooting Summary

    TROUBLESHOOTING SUMMARY WHEN TROUBLESHOOTING IT IS IMPORTANT TO REMEMBER…. •REMEMBER ALL RESOURCES AVAILABLE TO YOU!! • Rinnai documentation (Tech Service Manual, Installation Manuals, Tech Data Sheets). • Rinnai Support •Technical Support and Engineering Phone Support. •Local Support (Sales representatives, distributors, etc.) •...
  • Page 85 General Troubleshooting Summary Basic Troubleshooting this is a general guide and not intended as an official troubleshooting procedure - contact Rinnai technical support if needed. ELECTRICITY WATER Verify correct venting Verify input power Verify flow Verify incoming pressure Verify correct parts, seals, custom cuts,...
  • Page 86 This concludes the Rinnai Condensing Tankless Water Heater Training Program Level III Service Fundamentals 701103 Enhancing Lives By Changing The Way Water Is Heated © 2016 Rinnai America Corporation PROPRIETARY and CONFIDENTIAL 5/4/2018...

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