Page 1 Always check the water temperature before entering a water must be treated and/or the heat exchanger shower or bath. ﬂushed regularly. Rinnai provides a “Scale Control System” that oﬀers superior lime scale preven on and Do not use this appliance if any part has been under corrosion control by feeding a blend of control water.
Page 2 How to Set the Temperature This water heater requires a minimum ﬂow rate to operate. This rate can be found on the speciﬁca on page in this manual. In some cases when you are not ge ng hot water or if the water alternates between hot and cold, it is due to the water ﬂow being below or close to the minimum ﬂow rate.
Page 3 Temperatures Available with a Controller The water heater can deliver water at only one temperature se ng at a me. The available temperatures are provided below. A temperature lower than 98° F (37° C) can be obtained at the tap by mixing with cold water. To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the “On/Oﬀ”...
Page 4 endless comfort and performance TANKLESS WATER HEATING SOLUTIONS FOR THE HOME...
Page 5 Family-friendly, earth-friendly Rinnai Tankless Water Heaters let us all live greener and cleaner. Our efficient and compact technology helps conserve natural resources, including water, while producing less waste in landfills. And with higher standards for lower emissions, your family can breathe easier, too.
Page 6 ELECTRICITY 0.95 $555 TANKLESS TECHNOLOGY FUEL TYPE/ENERGY SOURCE EF (ENERGY FACTOR) ANNUAL OPERATING COSTS* Rinnai’s line of digital controllers allows HIGH-EFFICIENCY NON-CONDENSING TANKLESS NATURAL GAS 0.82 $199 you to set water temperature precisely for multiple locations in your home. HIGH-EFFICIENCY NON-CONDENSING TANKLESS PROPANE 0.82...
Page 7 The best part is, Rinnai can offer this solution of adding an additional line. This technology regardless of your current plumbing configuration.
Page 8 REMOTE DIAGNOSTICS AND MAINTENANCE Ready for hot water? So is your system. Available as an added feature, the Rinnai Control-R™ Wi-Fi Many Rinnai tankless models come standard module and mobile app for Rinnai Tankless Water Heaters • Select a monitoring dealer with recirculation technology, a built-in take control and flexibility to a new level.
Page 9 95% - 96% WI-FI READY AVAILABLE IN NATURAL GAS OR PROPANE INDOOR AND OUTDOOR VERSIONS AVAILABLE RECIRCULATION SOLUTION MADE POSSIBLE WITH CIRC-LOGIC TECHNOLOGY ISOLATION VALVES THERMACIRC360 — (RECIRC WITH OR WITHOUT DEDICATED LINE) Learn more at rinnai.us Learn more at rinnai.us...
Page 10 1-800-621-9419 • rinnai.us ©2016 Rinnai America Corporation. Rinnai America Corporation continually updates materials, and as such, content is subject to change without notice. Local, state, provincial, federal and national fuel gas codes must be adhered to prior to and upon installation.
Page 11 Direct Vent Tankless Water Heater Installation and Operation Manual FOR INDOOR APPLICATIONS ONLY RUC80i ....REU-KBD2530FFUD-US RUC90i ....REU-KBD2934FFUD-US RUC98i ....REU-KBD3237FFUD-US FOR OUTDOOR APPLICATIONS ONLY RU80e ....REU-KB2530WD-US RU90e ....REU-KB2934WD-US RU98e ....REU-KB3237WD-US Low Lead Content SANITATION NSF/ANSI 372 ANSI Z21.10.3 ●...
Page 12: Table Of Contents
If you have any questions or feel that the manual is incomplete contact Rinnai at 1-800-621-9419 Important Safety Information Safety Definitions This is the safety alert symbol.
Page 13: Safety Behaviors And Practices For The Consumer And Installer
Safety Behaviors and Practices for the Consumer and Installer WARNING   Before operating, smell all around the appliance Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not area for gas.
Page 14: Installation Instructions
Training in installation of tankless water heaters. under the appliance. The pan must not restrict (Training can be accessed on-line at combustion air flow. www.trainingevents.rinnai.us)  Do not obstruct the flow of combustion and Type of installation ventilation air. Combustion air shall not be ...
Page 15: Prepare For Installation
General Instructions (continued) Prepare for installation  The appliance must be isolated from the gas supply Parts included piping system by closing its individual manual  Tankless water heater shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or ...
Page 16: Determine Installation Location
Rinnai offers Southeastern Filtration’s “ScaleCutter Damage and repair due to corrosive compounds in the Water Conditioning System” that offers superior lime air is not covered by warranty.
Page 17 Direct Vent Terminal Clearances (Indoor Units) For indoor models, you must install a vent termination to bring in combustion air and expel exhaust to the outside. TERMINATION INSIDE CORNER DETAIL Clearance in Ref. A also applies to anticipated snow line SNOW FIXED CLOSED...
Page 18 Other Than Direct Vent Terminal Clearances (Outdoor Units) INSIDE CORNER DETAIL Clearance in Ref. A also applies to anticipated snow line FIXED CLOSED OPERABLE FIXED CLOSED OPERABLE AIR SUPPLY INLET VENT TERMINAL AREA WHERE TERMINAL IS NOT PERMITTTED Canadian Installations US Installations Description (CSA B149.1)
Page 19 Additional clearances RU80e, RU90e, RU98e Check to determine whether local codes supersede these clearances.  Avoid termination locations near a dryer vent.  Avoid termination locations near commercial cooking exhaust. (50 mm) between (0.91 m) to ventilated  terminals at same level Avoid termination locations near any air inlets.
Page 20: Freeze Protection
Unit clearances Freeze Protection to top Make sure that in case of freezing weather the water heater and its water lines are protected to prevent freezing. Damage due to freezing is not covered by the warranty. to front With electrical power and gas supplied, the water heater will not freeze when the outside air temperature is as cold as –22°F (-30°C) for indoor to side...
Page 21 Example: If you have one elbow then your Maximum vent length maximum vent length is 35 feet (10.7 m). Maximum Vent Length with Concentric Venting If your actual length is greater than 15 ft (4.6 m) then move SW1 in DIPSW 1 to 1.
Page 22 Refer to the guidelines and tables below to find the maximum vent length based on the number of elbows.  Comply with the exhaust clearances found in the Rinnai Installation and Operation Manual.  Only one appliance can be attached to the vent system.
Page 23: Checklist To Determine Installation Location
Mount to Wall Checklist to Determine Installation Location □ The water heater is not exposed to corrosive compounds in the air. □ The water heater location complies with the wall installation clearances. brackets □ For indoor models, the planned venting will not exceed the maximum length for the number of elbows used.
Page 24: Installation Of Venting (Indoor Models Only)
Refer to the vent manufacturer’s technical literature for specific part numbers and instructions. Approved Vent Manufacturers and Products Listed and Tested Vertical Horizontal Manufacturer Contact Vent Products Termination Termination Rolux Condensing www.rinnai.us Ubbink 184162PP 223176PP, 223177PP Vent System 800-621-9419 InnoFlue Vent System www.centrotherm.us.com Centrotherm (single wall SW, 3 ICRT3539...
Page 25 Do not use cellular core PVC/CPVC. If it becomes necessary to access an enclosed vent  system for service or repairs, Rinnai is not responsible Do not use Radel, ABS, or galvanized material to for any costs or difficulties in accessing the vent vent this appliance.
Page 26: Determining Vent Configuration
Determining Vent Configuration NOTICE 2. Remove exhaust adapter ring.  Prior to the installation of the vent system, the unit must be properly adjusted for the venting configuration selected for the application.  Any issues resulting from improper installation will not be covered by warranty. ...
Page 27 Determining Vent Configuration (continued) Twin Pipe PVC/CPVC Configuration (3”or 4”) 3. Install the intake pipe. Ensure it is properly seated. 4. Secure the intake pipe to the unit with the supplied screw (in the carton box). Intake Cap to be removed and discarded for twin pipe PVC/CPVC configuration.
Page 28 Flue Installation with Concentric Venting (indoor models only) Install the venting termination according to the diagrams and instructions below. Horizontal Termination Slope the venting 1/4” per foot toward the appliance according to the vent manufacturers installation instructions. Dispose of condensate per local codes. Vertical Termination Slope the venting 1/4”...
Page 29 Flue Installation with Centrotherm Venting (indoor models only) Install the venting termination according to the diagrams and instructions below.  Comply with the exhaust clearances found in the Rinnai Installation and Operation Manual.  Only one appliance can be attached to the vent system.
Page 30: Twin Pipe Pvc/Cpvc Vent Installation
Twin Pipe PVC/CPVC Vent Installation This newly certified vent system is comprised of PVC/CPVC pipes, fittings and either the IPEX System Low Profile Termination Kit Assembly (System 636), snorkel termination, or tee termination. WARNING Installations must comply with local requirements and with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 for U.S. installations or CSA B149.1 for Canadian installations.
Page 31 The exhaust and air piping must be installed as instructed in this manual. The chimney chase must be used only for the Rinnai Water Heater(s) vent chase. NO OTHER appliance or fireplace can be connected to the chimney chase. Exhaust and air piping materials must comply with this instruction. The chimney chase must be fitted with a sealed access opening to facilitate interior inspection.
Page 32 IMPORTANT CONSIDERATIONS FOR LOCATION: separate vent system.   If common venting is required, refer to Rinnai Locate the vent outlet where flue gases will not harm Common Vent Installation Manual (latest revision) for surrounding plants and/or cooling equipment. instructions on specific allowable venting method as ...
Page 33 IMPORTANT CONSIDERATIONS FOR LOCATION (continued): below. When determining equivalent combustion air and Exhaust and Combustion Air Intake Pipe Diameters and vent length, add 5 feet for each 90° elbow, 2.5 feet for each Maximum Lengths: 45° elbow.  For PVC/CPVC vent systems reduce the maximum allowable length for each elbow and termination type Example of calculation (assume 3”...
Page 34 OPTION 2: Maximum Equivalent Vent Length Tables: Determine the number of 90 degree elbows in the vent system. (two 45 degree elbows count as one 90 degree elbow.) Refer to the tables below to find the maximum vent length based on the number of elbows and termination style. Natural Gas Units Total Equivalent Vent Length (Intake/outlet) for Twin Pipe 3"...
Page 35 Maximum Equivalent Vent Length Tables (continued): Propane Units Total Equivalent Vent Length (Intake/outlet) for Twin Pipe 3" PVC/CPVC 41 Feet Maximum Vent Length IPEX or Royal IPEX or Royal Snorkel Side Wall Tee Termination Type Concentric Vent Low Profile Termination Termination Termination Termination Equivalent Length in feet...
Page 36 Installation of PVC/CPVC Vent and Intake Air Piping: Adapter Installation Configurations: Note the correct position of the combustion air inlet and gas flue outlet, as these are NOT interchangeable. For the correct position and design of the twin pipe gas flue outlet and combustion air inlet refer to the installation instructions in this manual.
Page 37 Certified PVC/CPVC Vent Termination Options Vent Termination Configurations WARNING There are 4 configurations for vent terminations that are Danger of fire or bodily injury – Solvent cements and approved for use with the RUC series water heaters: primers are highly flammable. Provide adequate Concentric Termination (IPEX Concentric Vent Kit) ventilation and do not assemble near a heat source or -Allows for only one penetration through a wall or roof.
Page 38 Certified PVC/CPVC Vent Termination Options (continued) IPEX Concentric Vent Kit Assembly (System 636): MECHANICALLY FASTENED RAIN CAP: Once the proper location has been determined, cut a The Rain Cap must be installed with the supplied Stainless hole in the roof or wall large enough to Steel screw and lock nut, and in accordance with the accommodate the outer pipe.
Page 39 IPEX CONCENCTRIC VENT KIT (CVK) CLEARANCES: ACCEPTABLE VENTING CLEARANCES FOR IPEX CONCENCTRIC VENT KIT (CVK) TERMINATION TOP CROSS SECTIONAL VIEW WALL 24” MIN to next CVK Two or More Vent Terminals on same level Soffit Reference “General Clearance Ceiling Requirements” section of this manual for important considerations for locating vent termination under a soffit (ventilated or unventilated),...
Page 40 Table 8: Approved PVC/CPVC Vent Configurations This configuration requires the use of the This configuration requires the use of the IPEX or Royal Concentric Vent Termination IPEX or Royal Concentric Vent Termination 3" or 4" PVC/ 3" or 4" PVC/ CPVC IPEX CPVC IPEX System 636 or...
Page 41 Certified PVC/CPVC Vent Termination Options (continued) Kit Contents 3” and 4” Low Profile Vent Termination Kits Item Description The following information should be used in conjunction with the IPEX System 636 Installation Guide: Base (Two Holes)  Termination kits are to be tested and certified for use Cap (One Hole) with the brand of pipe-fitting-cement system that is to be utilized in the application.
Page 42 Certified PVC/CPVC Vent Termination Options (continued) Twin Pipe (PVC/CPVC) Terminations PVC/CPVC Sidewall (Tee and Snorkel) Terminations: Locate the vent and intake air termination using the following guidelines: The total length of the vent or intake air piping must 12” Exhaust Vent not exceed the limits given in maximum equivalent vent length tables.
Page 43 Certified PVC/CPVC Vent Termination Options (continued) NOTE Vent Termination All figures shown in this section is in reference to flat roofs. Combustion air termination For heights of venting passing through a pitched roof, refer 12” above to NFPA 54/ANSI Z223.1-09 (table and figure 12.7.2), CSA 12”...
Page 44 Certified PVC/CPVC Vent Termination Options (continued) Apply a thin coat of cement evenly in the socket. NOTE Quickly apply a heavy coat of cement to the pipe and To prevent the possibility of condensate freeze-up, do not insert pipe into fitting with a slight twisting motion install vent kits one above the other.
Page 45 Parts Information Types of Acceptable PVC/CPVC Elbows for Venting System ACCEPTABLE ACCEPTABLE NOT ACCEPTABLE 90° Elbows, Female Unthreaded 90° Elbows, Female Unthreaded 90° Elbows, Female Unthreaded Socket Ends: (Long Turn) Long Socket Ends: (1/4 Bend) Short Socket Ends: Close Turn Sweep Sweep WARNING...
Page 46 Parts Information (continued) Vent Components and Assigned Equivalent Lengths: condensing products: The following fittings and accessories (by others) are certified for use with the above mentioned Approved Termination Component Equivalent Lengths Equivalent OEM # or Cert. Product Description Diagram Lengths (Ft.) 196006 /197009 (3 Inch) PVC/CPVC- FGV IPEX (Purchased...
Page 47 PVC/CPVC Equivalent Vent Length Calculation Sheet Equivalent Vent Length Calculation Sheet Number of Equivalent Vent Total Equivalent Fitting / Termination Type fittings Length Length 90 elbow 45 elbow IPEX Low Profile Termination IPEX 4" Concentric Termination IPEX 3" Concentric Termination Royal 3”...
Page 48: Condensate (Indoor Models Only)
 A condensate neutralizer kit, 804000074, is  All condensate must drain and be disposed of available from Rinnai. The kit allows condensate according to local codes. to flow through neutralizing media that raises the  Use only corrosion resistant materials for the...
Page 49: Installation Of Plumbing
Isolation valves are included with this water heater.  Do not place any other type valve or shutoff device Rinnai strongly recommends the installation of between the relief valve and the water heater. isolation valves on the cold and hot water lines...
Page 50 Isolation Valves and Pressure Relief Valve (PRV) The isolation valves provide the ability to isolate the water heater from the structure’s plumbing and allow quick access to flush the heat exchanger. Check with local codes to determine if a pressure and temperature relief valve is required.
Page 51 Piping Diagram for Basic Installation Cold water Water inlet drain plug connection Condensate Condensate Hot water drain line trap drain plug outlet The condensate drain pipe (along its entire length) must be at least the same diameter as the drain line, (1/2 inch NPT). Refer to the Condensate section in the venting instructions...
Page 52: Checklist For Plumbing
Check for proper water pressure to the water corrosion or stress cracking, the piping shall be heater. Minimum water pressure is 50 psi. Rinnai rinsed with water after testing, unless it has been recommends 60-80 psi for maximum determined that the leak test solution is non- performance.
Page 53  Any compound used on the threaded joint of the Pipe Sizing Table - Natural Gas gas piping shall be a type that resists the action of Schedule 40 Metallic Pipe liquefied petroleum gas (propane / LPG). Inlet Pressure: less than 2 psi (55 inches W.C.) ...
Page 54: Connect Electricity
Connect Electricity Adjustment for High Altitude Installations WARNING Set SW2 and SW3 in DIPSW 1 to the values shown in Do not use an extension cord or an adapter plug with table below for your altitude. The default setting for this appliance.
Page 55: Installation Of Temperature Controller
120 volt potential next to the temperature Controllers cannot be wired in series. controller connections inside the unit. Do not connect the temperature controller to the Maximum 4 Controllers Rinnai 120VAC terminals provided for the optional solenoid Water drain valves. Heater Indoor models have their controller built into the front panel.
Page 56 Mounting the controller 1. Make three holes in the wall as shown. Outline of Remote securing screw 1-21/32" wiring hole 3-5/16" securing screw 2. Run the cable between the controller and the water heater or the controller and another controller. 3.
Page 57: Final Checklist
Final Checklist □ Confirm that the water heater is rated for the gas □ type supplied. The water heater is not subject to corrosive □ compounds in the air. Confirm that the electricity is supplied from a 120 □ VAC, 60 Hz power source, is in a properly The water supply does not contain chemicals or grounded circuit, and turned on.
Page 58: Technical Data
Technical Data Specifications RUC80i RUC90i RUC98i RU80e RU90e RU98e Minimum Gas Consumption Btu/h 15,200 Maximum Gas Consumption Btu/h 152,000 180,000 199,000 152,000 180,000 199,000 0.26 - 8.0 GPM 0.26 - 9.0 GPM 0.26 - 9.8 GPM 0.26- 8.0 GPM 0.26 - 9.0 GPM 0.26 - 9.8 GPM Hot water capacity (Min - Max) * (1.0 - 25 L/min)
Page 59: Dimensions
Dimensions Inches (millimeters) RUC80i, RUC90i, RUC98i ø 5.5 (140.2) All Models 5.9 (150) 10.1 (257.7) 1.2 (31.2) DIMENSION Inches (mm) 8.7 (222) 2.8 (70.1) A (GAS) 1.6 (40.2) A (COLD) 2.0 (50.2) A (HOT) 1.6 (41.2) RU80e, RU90e, RU98e A (CONDENSATE 0.9 (22.4) 10.1 (257.5) 0.6 (15)
Page 60: Pressure Drop And Water Flow Curves
RU98e Water Flow (gpm) The chart below only applies to incoming water temperatures of 70°F (21°C) or less. For NOTICE incoming water temperatures greater than 70°F (21°C) please contact Rinnai. RUC98i, RU98e RUC90i, RU90e RUC80i, RU80e delta T - Temperature Rise (°F)
Page 61: Ladder Diagram
Ladder Diagram KBD Series Manual...
Page 62: Recirculation Mode
Recirculation Mode 4. Adjust the dip switch by moving the SW4 in The Rinnai water heater has the ability to control a DIPSW 2 to ON. recirculation pump. Two modes are available, For Economy mode, set SW8 in DIPSW 2 to OFF Economy and Comfort, which recirculate the water in (default).
Page 63 °F Mode Mode Pump recirculation begins when the water heater is turned on. The Rinnai inlet and outlet thermistors measure the water temperature. The water heater produces hot water at the temperature setting. If the inlet thermistor detects abnormal temperature then diagnostic code 51 is generated and the pump will turn off.
Page 64: Operation Instructions
RU98e ....REU-KB3237WD-US Important Facts about your Water Heater Thank you for purchasing a Rinnai Tankless Water Heater. For proper operation and safety, it is important to follow the instructions and adhere to all safety precautions. Read all of the instructions and the warranty thoroughly before operating this water heater. Keep this manual in a safe place.
Page 65: Consumer Operation Guidelines For The Safe Operation Of Your Water Heater
Consumer Operation Guidelines for the Safe Operation of your Water Heater FOR YOUR SAFETY READ BEFORE OPERATING WARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. ...
Page 66: How To Use The Temperature Controller
 Always check the water temperature before entering a water must be treated and/or the heat exchanger shower or bath. flushed regularly. Rinnai provides a “Scale Control System” that offers superior lime scale prevention and  Do not use this appliance if any part has been under corrosion control by feeding a blend of control water.
Page 67: How To Set The Temperature
How to Set the Temperature This water heater requires a minimum flow rate to operate. This rate can be found on the specification page in this manual. In some cases when you are not getting hot water or if the water alternates between hot and cold, it is due to the water flow being below or close to the minimum flow rate.
Page 68 Temperatures Available with a Controller The water heater can deliver water at only one temperature setting at a time. The available temperatures are provided below. A temperature lower than 98° F (37° C) can be obtained at the tap by mixing with cold water. To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the “On/Off”...
Page 69: Diagnostic Codes
Temperature Options Without a Temperature Controller The default temperature setting for this appliance installed without a temperature controller is 120° F (49° C). If desired, the temperature setting can be changed to 140° F (60° C) by adjustment of a switch. Set SW5 in DIPSW 1 to ON to obtain 140°...
Page 70 Diagnostic Codes and Remedies WARNING Some of the checks below should be done by a licensed professional. Consumers should never attempt any action that they are not qualified to perform. Code Definition Remedy Power interruption during Bath Fill (Water will not flow when Turn off all hot water taps.
Page 71 LC2,…) Off button on the temperature controller 5 times. Repeated LC codes will eventually lockout “LC”) the water heater. Please call Rinnai technical department. Maintenance has been Indicates a licensed professional performed maintenance or corrected an issue. performed Clean inlet water supply filter.
Page 72: Required Maintenance
Required Maintenance The appliance must be inspected annually by a licensed professional. Repairs and maintenance shall be performed by a licensed professional. The licensed professional must verify proper operation after servicing. WARNING To protect yourself from harm, before performing maintenance: ...
Page 73: Freeze Protection And Winterization
catch any water that is contained inside the unit. Freeze Protection. The unit may be drained manually. Unscrew the water filter. Rinse the filter to remove However, it is highly recommended that: any debris. Install the filter and open the isolation ...
Page 74: Flushing The Heat Exchanger
An LC0~LC9 or “00” or 58 diagnostic code indicates the unit is beginning to lime up and must be flushed. Failure to flush the appliance will cause damage to the heat exchanger. Damage caused by lime build-up is not covered by the unit’s warranty. Rinnai strongly recommends installation of isolation valves to allow for flushing of the heat exchanger.
Page 75: Manual Draining Of The Water Heater
Manual Draining of the Water Heater WARNING To avoid burns, wait until the equipment cools down before draining the water. The water in the appliance will remain hot after it is turned off. If the water heater is not going to be used during a period of possible freezing weather, it is recommended that the water inside the water heater be drained.
Page 76: State Regulations
State Regulations NOTICE BEFORE INSTALLATION This direct-vent appliance must be installed by a licensed professional. If you are not properly trained, you must not install this unit. IMPORTANT: In the State of Massachusetts (248 CMR 4.00 & 5.00) For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied:...
Page 77: Replacement Parts
Replacement Parts The Technical Sheet that is located inside the front cover of the water heater contains a complete Gas Control Assembly Electrode / Flame Rod illustrated parts list. Tech Sheet Item No. Gas Control Assembly Electrode / Flame Rod Kit 116, 117 Fan Assembly / Motor Heat Exchanger...
Page 78: Warranty
/ thermostat, or timer, or an on-demand system is 12 years for residential applications and 5 years for commercial applications. [3] Period of coverage is reduced to 5 years from date of purchase if the Rinnai water heater temperature setting exceeds 160° F (71° C).
Page 79 Limitation on Warranties No one is authorized to make any other warranties on behalf of Rinnai America Corporation. Except as expressly provided herein, there are no other warranties, expressed or implied, including, but not limited to warranties of merchantability or fitness for a particular purpose, which extend beyond the description of the warranty herein.
Page 80 Ultra Series RUC80i, RUC90i, RUC98i, RU80e, RU90e, RU98e REGISTRATION REQUIRED* Rinnai is providing the opportunity to extend your Rinnai Standard Limited Warranty on labor only on Ultra Series models Products not registered RU80, RU90, RU98, RUC80, RUC90, and RUC98 if you register within 30 days of purchase of your unit.
Page 81: French Version
Chauffe-eau sans réservoir à ventilation directe Manuel d’installation et d’utilisation POUR DES APPLICATIONS EN INTÉRIEUR UNIQUEMENT RUC80i ....REU-KBD2530FFUD-US RUC90i ....REU-KBD2934FFUD-US RUC98i ....REU-KBD3237FFUD-US POUR DES APPLICATIONS EN EXTÉRIEUR UNIQUEMENT RU80e ....REU-KB2530WD-US RU90e ....REU-KB2934WD-US RU98e ....REU-KB3237WD-US Low Lead Content SANITATION NSF/ANSI 372...
Page 82 Ajustment pour installations en haute altitude ..114 AVIS : Rinnai partage parfois des informations de contact de clients avec des entreprises qu’il estime pouvoir fournir des produits ou services qui peuvent vous être utiles. En communicant ces informations, vous donnez votre accord pour que nous communiquions vos informations de contact dans ce but.
Page 83: Attitudes Et Pratiques De Sécurité Pour Consommateur Et Installateur
Attitudes et pratiques de sécurité pour consommateur et installateur AVERTISSEMENT  N’utilisez que votre main pour appuyer sur le bouton de  Avant la mise en œuvre, reniflez tout autour de la zone commande de gaz ou l’enfoncer. N’utilisez jamais de l’appareil pour détecter une odeur de gaz.
Page 84: Instructions D'installation
(Du perfectionnement est accessible en ligne sur le site  N’obstruez pas le flux d’air de combustion et de www.trainingevents.rinnai.us). ventilation. L’air de combustion de doit pas provenir d’espaces occupés. Type d’installation ...
Page 85: Préparation Pour L'installation
Instructions générales (Suite) Préparation pour l’installation  L’appareil devra être isolé du système de conduite Pièces incluses d’alimentation en gaz en fermant sa vanne de coupure manuelle d’alimentation durant tout test de pression de  Chauffe-eau sans réservoir ce système en dessous de 1/2 psi (3,5 kPa ou 13,84 ...
Page 86: Détermination De L'emplacement De L'installation
à température élevée. Les dommages et les réparations résultant de la présence de Rinnai propose le “Système de conditionnement d’eau composés corrosifs dans l’air ne sont pas couverts par la ScaleCutter” de Southeastern Filtration qui permet une garantie.
Page 87 Dégagements à la terminaison de ventilation directe (appareils d’intérieur) Pour les modèles à l'intérieur, vous devez installer un évent de sortie pour apporter de l'air de combustion et d'expulser échappement à l'extérieur. INSIDE DÉTAIL D’ANGLE TERMINATION CORNER DETAIL RENTRANT TERMINAISON Clearance in Le dégagement Ref.
Page 88 Dégagements à la terminaison de ventilation non directe (appareils d’extérieur) INSIDE DÉTAIL D’ANGLE RENTRANT CORNER DETAIL FIXED FERMÉ EN PERMANENCE CLOSED POUVANT OPERABLE S’OUVRIR FERMÉ EN FIXED PERMANENCE CLOSED POUVANT OPERABLE BOUCHE D’ALIMENTATION EN AIR S’OUVRIR TERMINAISON DE VENTILATION ZONE OÙ UNE TERMINAISON N’EST PAS AUTORISÉE Installations canadiennes Installations américaines...
Page 89 Dégagements additionnels Contrôlez si des réglementations locales sont plus RU80e, RU90e, RU98e exigeantes que ces valeurs de dégagements.  Évitez de positionner des terminaisons près d'une ventilation de déshydrateur.  Évitez de positionner des terminaisons près d’une (50 mm) entre des (0,91 m) jusqu’à...
Page 90: Protection Contre Le Gel
Protection contre le gel Dégagements autour du chauffe-eau Assurez-vous que par temps très froid le chauffe-eau et ses to top Vers le conduites d'eau sont protégées pour éviter le gel. Les haut dommages dûs au gel ne sont pas couverts par la garantie. Avec un raccordement sur le secteur, ou chauffage par gaz le chauffe-eau ne gèlera pas quand la température de l’air Vers le...
Page 91 Longueur maximale de ventilation AVIS Longueur maximale de ventilation concentrique Si votre longueur de ventilation est plus grande que la Déterminez le nombre de coudes à 90 degrés dans le prescription (voir la note 3 sur cette longueur max. de système de ventilation (Deux coudes à...
Page 92: Dépose Du Panneau Frontal
90 degrés.) Consultez les lignes directrices et les tableaux ci-dessous pour trouver la longueur d'évacuation maximale basée sur le nombre de coudes.  Respecter les dégagements de gaz d'échappement trouvés dans l'installation Manuel d'utilisation et Rinnai.  Un seul appareil peut être connecté au système de ventilation.
Page 93: Liste De Contrôle Pour Choisir L'emplacement De L'installation
Montage mural Liste de contrôle pour choisir l’emplacement de l’installation □ Le chauffe-eau n’est pas exposé à des composés corrosifs dans l’air. □ L’emplacement du chauffe-eau permet de respecter Supports les dégagements. d’installation □ murale Pour les modèles d’intérieur, la ventilation prévue ne dépassera pas la longueur maximale en fonction du nombre de coudes utilisé.
Page 94: Installation De Ventilation (Modèles D'intérieur Uniquement)
Fabricants et aux Produits de Ventilation Approuvés Produits de ventilation Terminaison Terminaison Fabricant Contact listés et testés verticale horizontale Système Rolux de www.rinnai.us 800- Ubbink 184162PP 223176PP, 223177PP ventilation à 621-9419 Système de ventilation InnoFlue, tube à paroi www.centrotherm.us.com Centrotherm...
Page 95 N’utilisez pas de Radel, ABS ou matériau galvanisé pour ventilation enfermé pour des interventions de service ou ventiler cet appareil. de réparation, Rinnai n’est pas responsable des coûts ou  Ne pas couvrir tuyau de ventilation non-métallique et des difficultés pour y accéder. La garantie ne couvre pas raccords avec un isolant thermique.
Page 96: Détermination De Configuration De Ventilation
Détermination de configuration de ventilation AVIS 2. Sortez la bague d’adaptateur d’évacuation.  Avant l’installation du système de ventilation, l’appareil doit être correctement ajusté pour sa configuration choisie dans l’application.  Tous les problèmes résultant d’une mauvaise installation ne seront pas couverts par la garantie. ...
Page 97 Détermination de configuration de ventilation (Suite) Configuration à tuyau double en PCV/CPCV (3 ou 4”) Installez le tuyau d’admission. Assurez-vous de sa bonne mise en place. Fixez le tuyau d’admission sur l’appareil avec la vis fournie (dans l’emballage en carton). Le chapeau d’admission peut être enlevé...
Page 98 Installation de cheminée avec ventilation concentrique (modèles d’intérieur uniquement) Installez la terminaison de ventilation en fonction des schémas et des instructions qui suivent. Terminaison horizontale Inclinez la ventilation en direction du chauffe-eau (1/4” par pied, soit 1 cm/48 cm) selon les instructions d’instal- lation des fabricants de ventilation.
Page 99 Installation de cheminée avec ventilation Centrotherm (modèles d’intérieur uniquement) Installez la terminaison de ventilation en fonction des schémas et des instructions qui suivent  Restez conforme aux dégagements d’évacuation trouvés dans le manuel Rinnai d'installation et d’utilisation.  Un seul appareil peut être relié au système de ventilation.
Page 100: Installation De Ventilation À Tuyau Double En Pcv/Cpcv
Installation de ventilation à tuyau double en PCV/CPCV Le système de ventilation nouvellement certifié est constitué de tuyaux en PCV/CPCV, de raccords et d’une terminaison, soit par un kit de système IPEX à profil bas (Système 636), soit par un tube d’aspiration ou un té. AVERTISSEMENT Les installations doivent se conformer aux exigences locales et aux normes nationales, américaine sur le gaz combustible (ANSI Z223.1/ NFPA 54) ou canadienne sur les Installations aux gaz naturel et au propane (CSA B149.1).
Page 101 La tuyauterie d’évacuation et d’air doit être installée comme indi- qué dans ce manuel. Le puits de cheminée ne doit être utilisé que comme puits d’évacuation de chauffe-eau Rinnai. AUCUN AUTRE appareil ou foyer ne doit être connecté à ce puits de cheminée. Les matériaux de tuyauterie d’évacuation et d’air doivent être conformes à...
Page 102  Placez l’évent de sortie à un endroit où les gaz de fumée ne manuel d'installation Rinnai commune Vent (dernière révision) porteront pas atteinte aux plantes des alentours et/ou à de pour obtenir des instructions sur la méthode de ventilation l’équipement de refroidissement.
Page 103 IMPORTANTES CONSIDÉRATIONS POUR L’EMPLACEMENT (Suite) : ci-dessous. Pour déterminer la longueur équivalente de ventilation Diamètres et longueurs maximales des tuyaux pour évacuation et d’air de combustion, ajoutez 5 pieds pour chaque coude à 90°, et et admission d’air de combustion : 2,5 pieds pour chaque coude à...
Page 104 OPTION 2: Tableaux de longueur de ventilation équivalente maximale : Déterminez le nombre de coudes à 90 degrés dans le système de ventilation (Deux coudes à 45 degrés comptent comme un coude à 90 degrés). Reportez-vous à ce tableau pour trouver la longueur maximale de ventilation compte tenu du nombre de coudes et du style de terminaison.
Page 105 Tableaux de longueur de ventilation équivalente maximale (Suite) : Chauffe-eau au propane Longueur totale équivalente de ventilation (admission/sortie) avec des tuyaux jumelés en PCV/CPCV de 3" 41 pieds (12,5 m) Longueur maximale de ventilation Terminaison à Kit IPEX de ventila- Terminaison à...
Page 106 Installation de la tuyauterie PCV/CPCV de ventilation et admission d’air : Configurations d’installation d’adaptateur : Notez la position correcte de l’entrée d’air de combustion et de la sortie de gaz de fumées, car elles ne sont PAS interchangeables. Pour connaître la position correcte et la conception de la tuyauterie jumelée de sortie de gaz de fumées et d’entrée d’air de combustion, référez-vous aux instructions d’installation dans ce manuel.
Page 107 Options de terminaison de ventilation en PCV/CPCV certifiées Configurations de terminaison de ventilation AVERTISSEMENT Il existe 4 configurations de terminaisons de ventilation qui sont ap- Danger d'incendie ou de blessures - ciments et des amorces de solvants prouvées avec les chauffe-eau de série RUC : sont très inflammables.
Page 108 Options de terminaison de ventilation en PCV/CPCV certifiées (Suite) CHAPEAU PARE-PLUIE FIXÉ MÉCANIQUEMENT : Ensemble de kit IPEX de ventilation concentrique (Système 636) : Une fois l’emplacement approprié déterminé, découpez un Le chapeau pare-pluie peut être installé avec la vis et le contre- trou dans le toit ou dans un mur assez gros pour laisser pas- écrou en acier inox qui sont fournis, en suivant les instructions et ser le tuyau extérieur.
Page 109 DÉGAGEMENTS POUR KIT IPEX DE VENTILATION CONCENTRIQUE (CVK) : DÉGAGEMENT DE VENTILATION ACCEPTABLES POUR TERMINAISON DE KIT IPEX DE VENTILATION CONCEN- TRIQUE (CVK) TOP CROSS VUE EN COUPE 24” MIN au prochain CVK DEUX TERMINAISONS DE VENTILATION OU PLUS AU MÊME NIVEAU Soffite Référez-vous à...
Page 110 3” Royal Royal Concentric Concentric latéral mur verticals Configuration Configuration de terminaison de terminaison Configuration Configuration Rinnai de Rinnai de terminaison terminaison à standard type snorkel en "U" vertical PCV/CPCV de 3 renversé en PCV/CPCV de 3 ou 4" ou 4"...
Page 111 Options de terminaison de ventilation en PCV/CPCV certifiées (Suite) Contenu du kit Kits de terminaison profil bas de ventilation en 3” et 4” Qté Description Les informations qui suivent sont à utiliser en conjonction avec le Guide d’installation du Système 636 d’IPEX : Base (deux trous) •...
Page 112 Options de terminaison de ventilation en PCV/CPCV certifiées (Suite) Terminaisons à tuyaux jumelés (PCV/CPCV) Terminaisons PCV/CPCV sur mur de côté (Té et snorkel) Localisez la terminaison de ventilation et d’admission d’air en sui- vant ces consignes : La longueur totale de tuyauterie pour ventilation ou admis- 12”...
Page 113 Options de terminaison de ventilation en PCV/CPCV certifiées (Suite) REMARQUE Terminaison de ventilation Terminaison d’air de combustion Toutes les figures montrées dans cette section sont relatives à des toits plats. Pour les hauteurs de ventilation au travers d’un toit incliné, référez-vous à NFPA 54/ANSI Z223.1-09 (tableau et figure 12”...
Page 114 Options de terminaison de ventilation en PCV/CPCV certifiées (Suite) Appliquez une fiche couche de ciment de façon régulière sur REMARQUE la tulipe. Appliquez rapidement une bonne couche de ciment Pour éviter une possibilité de gel de condensats, n’installez pas de sur le tuyau et insérez-le dans le raccord avec un léger mou- kits de ventilation l’un au-dessus de l’autre.
Page 115 Informations sur les pièces Types de coudes en PCV/CPCV acceptables pour le système de ventilation INACCEPTABLE ACCEPTABLE ACCEPTABLE Coudes à 90°, avec tulipes d’extrémité Coudes à 90°, avec tulipes d’extrémité avec tulipes d’extrémité femelles non femelles non filetées : À grand rayon femelles non filetées : Coude 1/4 à...
Page 116 Informations sur les pièces (Suite) Composants de ventilation et longueurs équivalentes assignées : Les raccords et accessoires ci-dessous (de fourniture extérieure) sont certifiés pour une utilisation avec les produits à condensation mentionnés précédemment. Approuvés Pour la Fin Longueurs Équivalentes de Composants Constructeur N°d’OEM ou Description de...
Page 117 PCV/CPCV Feuille de calcul de longueur équivalente de ventilation Feuille de calcul de longueur équivalente de ventilation Nombre de Longueur équivalente Longueur Type de raccord / terminaison raccords de ventilation totale équivalente Coude à 90° Coude à 45° Terminaison IPEX profil bas Terminaison IPEX concentrique 4”...
Page 118: Condensats (Modèles D'intérieur Uniquement)
N’utilisez que des matériaux résistant à la corrosion pour les conduites de drainage de condensats, est disponible chez Rinnai. Ce kit permet que les condensats circulent au travers d’un environnement comme du tube en PCV ou du tuyau en plastique.
Page 119: Installation De La Plomberie
Des vannes d’isolement sont incluses sur ce chauffe-eau. Ne placez aucun autre type de vanne ou de Rinnai recommande fortement l’installation de vanne dispositif de coupure entre la soupape de décharge et d’isolement sur les conduites d’eau chaude et d’eau froide, le chauffe-eau car elles donnent la possibilité...
Page 120 Vannes d’isolement et soupapes de décharge Les vannes d’isolement procurent la capacité d’isoler le chauffe-eau de la plomberie de la structure et de permettre un accès rapide pour rincer l’échangeur thermique. Contrôlez dans les normes locales si une soupape de décharge déclenchée sur pression et température est nécessaire.
Page 121 Schéma de tuyauterie pour installation de base Entrée d’eau Bouchon de Connexion du froide drainage d’eau Conduite de Bouchon de drainage Sortie d’eau drainage de de piège à chaude condensats condensats Le tuyau de drainage de condensats (sur toute sa longueur) doit être au moins du même diamètre que la conduite de drainage (1/2 pouce, NPT).
Page 122: Liste De Contrôle Pour La Plomberie
été déterminé que la solution chauffe-eau. La pression d’eau minimale doit être de pour chercher des fuites n’est pas corrosive). 50 psi. Rinnai recommande 60-80 psi pour une performance maximale. • Utilisez des connecteurs approuvés pou brancher le chauffe-eau sur la conduite de gaz.
Page 123 • Tout composé utilisé sur un joint fileté de tuyauterie Tableau de calibrage de tube – Gaz naturel de gaz doit être d’un type qui résiste à l’action du gaz Tube métallique qualité 40 de pétrole liquéfié (propane / LPG). Pression d’entrée : Moins de 2 psi (55 pouces de hauteur de colonne d’eau) •...
Page 124: Raccordement De L'électricité
Raccordement de l’électricité Ajustement pour installations en haute altitude AVERTISSEMENT Passez les micro-commutateurs SW2 et SW3 dans DIPSW 1 N’utilisez pas de cordon rallonge ni d’adaptateur de prise sur les positions montrées au tableau selon votre altitude. avec cet appareil. Le paramétrage par défaut pour l’appareil est pour 0- Le chauffe-eau doit être électriquement relié...
Page 125: Installation De Contrôleur De Température
120 V prévues pour les électrovannes Rinnai Chauffe- optionnelles de drainage. Water eau Rinnai Heater Des modèles ont leur contrôleur intégré dans le panneau frontal. Des contrôleurs additionnels peuvent être installés. Wire controllers in parallel Emplacement des contrôleurs Câbler les contrôleurs en parallèle...
Page 126 Montage du contrôleur Faites trois trous dans le mur comme c’est montré. Outline of Remote Contour de la télécommande Vis de fixation securing screw 1-21/32" wiring hole Trou pour câblage 3-5/16" securing screw Vis de fixation Faites passer le câble entre le contrôleur et le chauffe- eau, ou entre le contrôleur et un autre contrôleur.
Page 127: Liste De Contrôle Finale
Liste de contrôle final □ Le chauffe-eau n’est pas exposé à des composés □ Contrôlez les conduites et raccordements de gaz pour corrosifs dans l’air. l’absence de fuites. □ L’eau d’alimentation ne contient pas de produits □ Confirmez que la pression d’entrée du gaz est dans les chimiques et ne présente pas un taux de dureté...
Page 128: Données Techniques
Données techniques Spécifications RUC80i RUC90i RUC98i RU80e RU90e RU98e 15,200 Consommation min. de gaz en Btu/h 152,000 180,000 199,000 152,000 180,000 199,000 Consommation max. de gaz en Btu/h 0.26 - 8.0 GPM 0.26 - 9.0 GPM 0.26 - 9.8 GPM 0.26- 8.0 GPM 0.26 - 9.0 GPM 0.26 - 9.8 GPM...
Page 129: Dimensions
Dimensions Pouces (millimètres) RUC80i, RUC90i, RUC98i ø 5.5 (140.2) Tous les modèles RUC98i 5.9 (150) 10.1 (257.7) 1.2 (31.2) SORTIE D’EAU FROIDE SORTIE DE CONDENSATS SORTIE D’EAU CHAUDE RACCORDEMENT DU GAZ SORTIE DE CONDENSATS DIMENSION En pouces (mm) 8.7 (222) 2.8 (70.1) A (GAZ) 1.6 (40.2)
Page 130 Débit d’eau (gallons/minute) Le graphique ci-dessous ne s’applique que pour des arrivées d’eau à 70°F (21 °C) ou moins. Pour des AVIS arrivées d’eau froide à température plus élevée que 70°F (21 °C), contactez Rinnai. Données de flux de sortie RUC98i, RU98e...
Page 131: Diagramme En Escalier
Diagramme en escalier PHASE NEUTRE POMPE RELAIS 3 FUSIBLE 10 A INTERRUPTEUR CHAUFFAGE DÉTECTEUR DE GEL ANTIGEL RELAIS 2 DÉCHARGEUR DE FOUDRE VARISTANCE VARISTANCE RELAIS 1 ALLUMAGE TERRE ALIENTATION À DÉCOUPAGE CAPTEUR DE ÉLECTROVANNE À FLUX D’EAU MODULATION CIRCUIT DE CAPTEUR CIRCUITDE DE FLUX D’EAU COMMANDE...
Page 132: Mode Recirculation
Mode recirculation Passez en position ON le le micro-commutateur SW4 dans Le chauffe-eau Rinnai a la capacité de contrôler une pompe de DIPSW 2. recirculation. Deux modes sont disponibles, Economy et Comfort, Pour le mode Economy, passez en position ARRÊT le micro- qui font recirculer l’eau dans le système de plomberie pour...
Page 133 être positionnés correctement pour la recirculation température Mode Mode de con- et le mode. Le chauffe-eau Rinnai doit être mis en marche. du Rinnai °F économique fort (Comfort) La pompe de recirculation est activée quand le chauffe-eau démarre.
Page 134 RU98e ....REU-KB3237WD-US Points importants concernant votre chauffe-eau Merci d’avoir acheté un chauffe-eau Rinnai sans réservoir. Pour un bon fonctionnement et la sécurité, il est important de suivre ces instructions et de respecter les précautions de sécurité. Lisez attentivement toutes les instructions et la garantie avant de faire fonctionner ce chauffe-eau. Conservez ce manuel en lieu sûr.
Page 135: Instructions D'utilisation
Consignes à l’opérateur pour un fonctionnement sûr de son chauffe-eau POUR VOTRE SÉCURITÉ LISEZ CECI AVANT DE COMMENCER AVERTISSEMENT Si vous ne suivez pas exactement ces instructions, il peut en résulter un départ d’incendie ou une explosion entraînant des dégâts matériels et blessures pouvant être fatales. Cet appareil ne comporte pas de veilleuse.
Page 136: Mode D'emploi Du Contrôleur De Température
Gardez la zone autour de l’appareil dégagée et exempte de traiter votre eau et/ou rincer régulièrement le chauffe-eau. matières combustibles, d’essence et d’autres vapeurs ou Rinnai propose le “Système de conditionnement d’eau liquides inflammables. ScaleCutter” de Southeastern Filtration qui permet une prévention supérieure du niveau d’entartage et du contrôle...
Page 137: Fixation De La Température
Fixation de la température Le chauffe-eau nécessite un minimum d’écoulement d’eau pour fonctionner. Ce seuil peut être trouvé sur la page de spécifications dans ce manuel. Dans certains cas quand vous n’obtenez pas d’eau chaude ou si l’eau passe de chaude à froide, cela peut venir de ce que l’écoulement d’eau est en-dessous ou trop proche du seuil minimal d’écoulement.
Page 138 Températures disponibles avec un contrôleur Le chauffe-eau peut fournir de l’eau à un seul niveau de température à la fois. Les températures possibles sont données ci-dessous. Une température inférieure à 98°F (37 °C) peut s’obtenir au robinet en mélangeant avec de l’eau froide. Pour changer l’échelle des températures et passer de Celsius à...
Page 139: Codes De Diagnostic
Options de température sans contrôleur de température Le réglage de température par défaut de cet appareil installé sans contrôleur de température est de 120°F (49 °C). Si on le souhaite ce réglage de température peut être changé pour 140°F (60 °C) en jouant sur un micro-commutateur. Sur le bloc DIPSW 1, passez le micro-commutateur SW5 sur MARCHE pour avoir 140°F.
Page 140 Codes de diagnostic et remèdes Certains de contrôles ci-dessous ne doivent être effectués que par un professionnel agréé. Les simples AVERTISSEMENT consommateurs ne doivent jamais tenter une intervention qu’ils ne sont pas qualifiés pour effectuer. Code Définition Remède Interruption du secteur durant un remplissage de baignoire Fermez tous les robinets d’eau chaude.
Page 141 On/Off (M/A) du contrôleur de température. Des codes LC à répétition vont LC2,…) pour “LC”) éventuellement verrouiller le chauffe-eau. Veuillez appeler le service technique chez Rinnai. Un entretien a été effectué Indique d’un professionnel agréé a effectué une intervention ou corrigé un problème. Nettoyez le filtre d’arrivée d’eau.
Page 142: Entretien Nécessaire
Entretien nécessaire L’appareil doit être inspecté annuellement par un professionnel agréé. Installation et interventions de service doivent être effectuées par un professionnel agréé. Ce professionnel agréé doit vérifier le bon fonctionnement après une intervention AVERTISSEMENT Pour vous protéger avant d’effectuer une intervention d’entretien : •...
Page 143: L'hiver
 filtre à eau. Rincez le filtre pour éliminer tous les débris. Des électrovannes de vidange soient achetées et Remettez le filtre en place et rouvrez les vannes installées pour vider automatiquement le chauffe-eau d’isolement. en cas de coupure d’alimentation secteur. Elles sont proposées dans un kit, N°...
Page 144: Rinçage De L'échangeur Thermique
Un code de diagnostic LC0~LC9 ou “00” ou 58 indique que le chauffe-eau commence à s’entartrer et doit être rincé. Ne pas le faire endommagerait son échangeur thermique. Des dommages causés par une accumulation de tartre ne sont pas couverts par la garantie de l’appareil. Rinnai recommande fortement l’installation de vannes d’isolement pour permettre un rinçage de l’échangeur thermique.
Page 145: Vidange Manuelle Du Chauffe-Eau
Vidange manuelle du chauffe-eau Pour éviter des brûlures, attendez que l’équipement ait refroidi avant de vidanger l’eau. AVERTISSEMENT L’eau restera longtemps chaude dans l’appareil après son arrêt. Si le chauffe-eau ne doit pas être utilisé durant une période où il pourrait geler, il est recommandé que l’eau à l’intérieur soit vidangée.
Page 146: Réglementations Officielles
Réglementations officielles AVIS AVANT TOUTE INSTALLATION Ce chauffe-eau à ventilation directe sans réservoir doit être installé par un professionnel agréé. Si vous n’avez pas reçu la formation appropriée, vous ne devez pas installer cet appareil. IMPORTANT : Dans l’état américain du Massachusetts (248 CMR 4.00 et 5.00) Pour tout équipement carburant au gaz à...
Page 147: Pièces De Rechange
Pièces de rechange La fiche technique, qui est située sur la face intérieure du couvercle avant du chauffe-eau, contient une liste Ensemble de commande de gaz Kit d’électrode/ tige de gaz complète illustrée des pièces. N° d’article de la fiche technique Ensemble de commande de gaz Kit d’électrode/ tige de gaz 116, 117...
Page 148: Garantie
Ce qui est couvert La garantie limitée standard de Rinnai couvre tous les défauts dus aux matériaux ou à la main-d’œuvre quand le produit est installé et exploité en conformité avec les instructions d’installation écrites de Rinnai, en fonction des termes de ce document de garantie limitée.
Page 149 Limitations des garanties Personne n’est autorisé à exprimer toute autre garantie au nom de la Rinnai America Corporation. Sauf ce qui est formulé expressément ici, il n’y a pas d’autres garanties, explicites ou implicites, incluant sans y être limité les garanties de valeur marchande ou d’adéquation pour une finalité...
Page 150 Série Ultra, si vous enregistrez sous 30 jours l’chat de votre chauffe-eau. Les produits non enregistrés seront toujours couverts par la garantie standard limitée offerte par Rinnai dans ce manuel d’instructions d’installation et d’utilisation, qui accompagne le produit. Des informations sur la garantie sont également disponibles sur le site Web de Rinnai (www.rinnai.us).
Page 151 Manuel de Série KBD...
Page 152 A tradition of true reliability. For nearly 100 years, we at Rinnai have been fiercely committed to delivering nothing less than a superior experience at every touch point. Beyond manufacturing the highest quality products, our people stand behind all that we make—before, during and long after installation.
Page 153 Rinnai Tankless Water Heater Troubleshooting Manual WARNING There are a number of live tests that are required when fault finding this product. Extreme care should be used at all times to avoid contact with energized components inside the furnace. You MUST be a qualified service person before proceeding with these test instructions. Before checking resistance readings, turn off power source to unit and then isolate each item to be checked from the circuit by unplugging it. When setting gas pressures on one of these units, please check the complete model number you are trouble‐ shooting. Gas pressures and dip switches can vary among models. Always check the rating plate for complete CAUTION If any of the original wire as supplied with the appliance must Label all wires prior to disconnection when be replaced, it must be replaced with type 18 AWG wire or its ...
Page 154 Table of Contents Code Numbers Page # 03 ……………………………………………………………………………………………………………………………………………… 4 05 ……………………………………………………………………………………………………………………………………………… 5 10 ……………………………………………………………………………………………………………………………………………… 6 11 ……………………………………………………………………………………………………………………………………………… 8 12 ……………………………………………………………………………………………………………………………………………… 11 14 ……………………………………………………………………………………………………………………………………………… 15 16 ……………………………………………………………………………………………………………………………………………… 17 19 ……………………………………………………………………………………………………………………………………………… 18 25 ……………………………………………………………………………………………………………………………………………… 19 31 ……………………………………………………………………………………………………………………………………………… 20 32 ……………………………………………………………………………………………………………………………………………… 21 33 ……………………………………………………………………………………………………………………………………………… 22 34 ……………………………………………………………………………………………………………………………………………… 23 41 ……………………………………………………………………………………………………………………………………………… 24 51 ……………………………………………………………………………………………………………………………………………… 25 52 ……………………………………………………………………………………………………………………………………………… 26 57 ……………………………………………………………………………………………………………………………………………… 27 58 ……………………………………………………………………………………………………………………………………………… 28 61 ……………………………………………………………………………………………………………………………………………… 29 65 ……………………………………………………………………………………………………………………………………………… 30 70 ……………………………………………………………………………………………………………………………………………… 31 71 ……………………………………………………………………………………………………………………………………………… 32 72 ……………………………………………………………………………………………………………………………………………… 33 73 ……………………………………………………………………………………………………………………………………………… 34 79 ……………………………………………………………………………………………………………………………………………… 35 2 ...
Page 155 No Code ……………………………………………………………………………………………………………………………………. 36 LC, LCO – LC9 .…………………………………………………………………………………………………………………………… 37 FF ………..……………………………………………………………………………………………………………………………………. 38 Cold Water Sandwich caused by Faulty Fixture…….. …………………………………………………………………. 39 Cold Water Sandwich caused by Low Flow .………………………………………………………………………………. 40 How to retrieve flow rate/temperature output with the MC‐91‐1 & MC‐91‐2 Controller….……… 42 3 ...
Page 156 Code 03 Troubleshooting Procedure Power interruption during bath fill (Water will not flow when power returns) 1. Turn of all hot water fixtures in building. Next press the ON/OFF button on the temperature controller twice. 4 ...
Page 157 Code 05 Troubleshooting Procedure Bypass Servo 2. Turn off power supply to unit, reapply power. Fire up unit. If code 05 reappears replace bypass valve. 5 ...
Page 158 Code 10 Troubleshooting Procedure Air Supply or Exhaust Blockage Request pictures of the entire vent system inside/outside the home or business. Review pictures looking for clearance issues, improper venting or materials used, etc. File all pictures in Syteline under incident number. 1. Perform this test only if the unit is coding out during your service call. Remove the vent system from the top of the water heater. Fire the product and see if the unit will operate without the vent system connected. If the unit operates without coding out at that point that's a great indication the problem is in the vent system leaving the unit. Ensure the front cover is installed on product before performing this test. Never leave a unit operating without the vent system connected. The test mentioned above is only that, a test. If the unit functioned with the vent disconnected there is a 95% chance the issue is in the vent pipe installation. Next go to step 2 below. There is a 5% chance it could be in the other items listed below. 2. Verify each vent section for proper installation. This will require disassembling each section to ensure proper installation depth. Mark vent pipe section with a marker before disassembling. This will allow you to determine the proper depth when you disassemble the components. Make sure to use the silicone grease Rinnai supplies with the condensing vent (PP) venting when installing each joint. Failure to use the grease will result in improperly sealed joints which will lead to code 10. 3. Inspect the vent system to ensure all clearances around vent terminations were met. Improper clearances will result in recirculation of combustion gases. 4. Make sure dip switch for vent length was set to the proper position. First determine total vent length, each ninety degree elbow counts as six foot of vent length, and each forty five degree bend counts as three foot. Example; a vent system with two ninety degree elbows, one forty five degree elbow and ten foot of straight pipe would be calculated as twenty five foot of total vent length. 5. If installer sprayed a form sealant around the vent pipe penetration through the wall make sure this material did not collapse the intake pipe. Look down vent pipe with a flash light. If you can't see that section of venting material remove it from the wall and inspect it. 6. Check for debris in vent system. Disconnect joints looking for water, condensation, inspects or other items. 7. Make sure vent termination meets Rinnai's recommendation from another vent termination on the same wall. If multiple Rinnai's are installed at location each termination should have a minimum of twelve inches of separation when installed on the same plane. If the other vents are not on the same ...
Page 159 10. Remove burner manifold and inspect for insects or other debris in air channel for restriction. 11. Remove burner and inspect copper fins in heat exchanger for a build up between fins. This will cause air flow restrictions which can lead to code 10's. If build up is present, you will need an air compressor capable of delivering 120 psi of air to blow out the burner and heat exchanger fins. If unable to clean the heat exchanger with compressed air replace the heat exchanger. Always wear safety glasses and a mask when blowing out the burner. 12. Verify low and high fire manifold pressures are set correctly. Some model units have a burner sensor if the manifold pressures are not properly set the temperature range for this senor may be too low causing a code 10. This information can be found under the front cover in the plastic holder. If missing contact Rinnai for proper gas pressure setting procedures. 13. Verify manifold gas pressures and dip switches were properly set for your altitude. This information can be found under the front cover in the plastic holder. If missing contact Rinnai for proper gas pressure setting procedures. 14.. Other items that could cause code 10's; a. Bad fan motor bearing b. Bad wiring harness to fan motor from PC board c. Bad PC board d. Improper dip switch settings 7 ...
Page 160 Code 11 Troubleshooting Procedure No Ignition Request pictures of the gas piping, meter, regulator, tank and any flex connectors used in the system. In addition; have the installer remove the front cover and forward you pictures of the heat exchanger, fan motor, and the area around the flame rod. Review these pictures looking for improper sized gas lines, regulators, tanks, signs of water leaks or heat damage to components inside the unit’s casing. File all pictures in Syteline under incident number. 1. Verify all gas valves on gas system are open feeding the proper gas pressure to said appliance. 2. Verify all air was purged from gas lines after installation. 3. Verify proper inlet gas pressures are being fed to appliance. Check appliances rating plate for proper pressures. This plate or label is located on the side of each unit. The minimum listed inlet pressure MUST be maintained with all gas appliances at the location firing on high fire. If the product is a condensing unit the front panel must be installed before testing inlet pressures. 4. Verify proper gas type; ensure the gas supply at this location matches that listed on said appliance. 5. Verify gas type dip switch on PC board is switch to proper gas type position. 6. Verify igniter is working. Turn off gas valve feeding the appliance. Unplug igniter wire; hold the igniter wire with an insulated pair of pliers about a 1/4" from a piece of metal. Cycle the unit to ensure you see a spark when unit is cycling. If not, check ignition system for loose connections, damaged components or disconnected plugs back to PC board. . If no spark is noted check the ignition board to verify it is getting the proper voltage from the PC board. See troubleshooting document under the unit's front cover for proper voltage and connector numbers. Note; there will be no voltage present unless the unit is going through the ignition cycle. 7. Make sure the ceramic sparker electrode is tight in its mounting bracket. You should not be able to move it with your finger if gasket is intact. If loose remove it and clean with dollar bill. Reinstall using new gasket and ensure it is tight when the installation is finished. If the electrode is loose the tip can drop down and touch the burners creating a short or no spark. A loose flame rod is called a floating flame rod and will result in code 11’s or 12's. 8. Verify the proper flame rod wire is plugged into the proper flame rod. Some units have multiple flame rods. A quick check to verify correct wiring is to look at the stamped letter on the bracket at flame rod, sample a Y indicates yellow, R = red and B = blue ...
Page 161 MUST be replaced if this seal is broken. While inside the burner box look up between the copper fins inside the heat exchanger for debris and/or blockage. Blow out fins, if unable to clean out fins inside combustion box replace heat exchanger. 12. If you note improper inlet gas pressures check to see if the gas system was properly sized. If sized properly you should see no more than a 0.3 inch pressure drop on natural gas with all gas appliances in the building firing on high fire. The allowable pressure drop for propane is 0.5 inches of water column. This pressure drop is based on the International Plumbing Code when operating on gas pressures up to 14" inches W.C. with black iron piping. There are a number of approved gas piping system out there, make sure you refer to the manufacture's or International Plumbing Code book for pressure drops on gas piping and pressures you are using for proper pressure drops allowed. If pressure drop excesses that mentioned above for black iron gas systems, your system could be undersized, please recheck sizing. The issue could be in any of the following items; the gas system, gas piping, regulator, tank, utility supply, dirt or debris in gas system components, etc. Have the gas system checked by a professional gas technical or master plumber that deals with gas system sizing. Refer to the International Plumbing Code Book for proper gas system sizing for gas type, piping and pressures being used at this location. 13. Inspect vent system for loose joints, improper fittings, failure to meet clearances around vent terminal outside building. See venting instructions for clearance specifications. Failure to meet vent terminal clearances can lead to recirculation of combustion gases causing incomplete combustion which will lead to carbon build up on flame rod. In addition; ensure vent length is within specifications and dip switch for vent lengths has been properly set. 14. Verify installer used the proper venting materials for the unit at your location. They must use the correct venting material for class III appliances approved by Rinnai. See Rinnai venting instructions for details. 15. Verify proper altitude settings, see high altitude gas pressure setting procedure for dip switch and manifold gas pressure settings. 16. On internal units inspect the plastic tube running from the bottom of the combustion chamber to the gas valve. If you find moisture in that tube, replace the gas valve. Also inspect the vent system to see where the condensate/moisture is coming from. The burner and heat exchanger fins should be inspected for excessive corrosion also. Signs of moisture could be a result of an improper venting or a leak inside the heat exchange. 17. Verify installer used the condensate drain tap as recommended by Rinnai on the vent terminal connection at the top of the water heater, non‐condensing product. If the condensate drain line is not 9 ...
Page 162 18. Check to ensure all two stages regulators are installed at least six foot away from appliance. Ensure when appliance shuts off the pressure from the two stage regulator doesn't exceed the maximum inlet pressure for the appliance. To verify this connect your manometer up to the test port on the bottom of the water heater. The inlet pressures should never exceed 10 inches water column for natural gas or 13.5 inches on propane. If it does the regulator may be defective. 19. Inspect all wiring harnesses throughout unit for water or moisture in electrical connections. If any connections appear to be damp or wet dry them out and try to find out what is causing this. 20. If using an MSA or MSB system isolate the unit giving trouble from the system during troubleshooting. If unit operates when isolated the issue may be in the electronic staging system (MSA or MSB). 21. Other suggestions; a. Verify spark electrode is installed in the correct position. b. Verify all burner cassettes are in place in burner rack. Sometimes when contractors drop a unit the burners can shift and become dislodged. If you find the burners dislodged loose burner bracket and reseat them. c. Remove the four burners located under the flame rod and move them over to the high fire side of the burner tray. Move the four burners from the high fire side over under the flame rod. Sometimes condensate or debris can get down in the burners and cause turbulence inside the burner. d. Condensate, debris or a malfunctioning mechanical component inside the gas valve may be preventing the valve from opening correctly once in a while. Replace gas valve. e. Voltage output to gas valve from PC board could be incorrect or intermittent due to a bad component on PC board, replace PC board. ...
Page 163 NOTE; before troubleshooting your code 12 first determine what type code 12 is present. Look into the view window while the appliance is going through the ignition cycle to see if you ever see a visible flame. The reason for this is; there are two types of code 12's. The most common code 12 is called a flame failure, meaning the appliance did sense a flame at one point. In other words you could see a visible flame in the burner box during the ignition cycle and/or during operation. The other is called an immediate code 12 and/or no flame was ever noted in the burner box. If you note a flame even for a few seconds follow steps 1 ‐ 17 below. If no flame was ever noted proceed to the last item listed in these instructions called, "Immediate code 12 or no flame visible in burner box". Often it is difficult to distinguish between a gas code 12 or and electrical code 12. The easiest way to do this is to turn off the gas and then try firing the unit. It should go to a code 11 at that point. If it goes onto code 12 you have an electrical short in a component or wiring harness. 1. Verify proper inlet gas pressures are being fed to appliance. Check appliance rating plate for proper pressures. This plate or label is located on the side of each unit. The minimum listed inlet pressure MUST be maintained with all gas appliances at the location firing on high fire. 2. If you note improper inlet gas pressures check to see if the gas system was properly sized. If sized properly you should see no more than a 0.3 inch pressure drop on natural gas with all gas appliances in the building firing on high fire. The allowable pressure drop for propane is 0.5 inches of water column. This pressure drop is based on the International Plumbing Code when operating on gas pressures up to 14" inches W.C. with black iron piping. There are a number of approved gas piping system out there, make sure you refer to the manufacture's or International Plumbing Code book for pressure drops on gas piping and pressures you are using for proper pressure drops allowed. If pressure drop excesses that mentioned above for black iron gas systems, your system could be undersized, please recheck sizing. The issue could be in any of the following items; the gas system, gas piping, regulator, tank, utility supply, dirt or debris in gas system components, etc. Have the gas system checked by a professional gas technical or master plumber that deals with gas system sizing. Refer to the International Plumbing Code Book for proper gas system sizing for gas type, piping and pressures being used at this location. 3. Verify manifold gas pressures. You will need the gas pressure setting procedure for the model number appliance you are working on. This information is normally found in a plastic holder on the back side of the front panel. If procedure is not available contact Rinnai tech services for data. Verify correct dip switch settings before adjusting/checking gas pressures. Dip switch settings can be found in the gas pressure setting procedure. If in altitudes above two thousand foot in elevation refer to high altitude settings and pressures. Next; connect your manometer to the gas valve test port. Fire the unit up 11 ...
Page 164 4. Inspect vent system for loose joints, improper fittings, failure to meet proper clearances around vent terminal outside building. See venting instructions for clearance specifications. Failure to meet vent terminal clearances can lead to recirculation of combustion gases causing incomplete combustion which will lead to code 12. In addition; ensure vent length is within specifications and dip switch for vent lengths has been properly set. 5. Ensure the installer used the proper venting materials for the unit at your location. You must use concentric venting material for class III appliances approved by Rinnai. See Rinnai venting instructions for details. Verify venting component at unit's vent connection is fully engaged into top of water heater. Separate connection to check for proper connection. You can mark the white vent material at the stainless steel connection before pulling it apart to check depth once separated. Failure to have this joint fully engaged will results in code 12's within ten seconds of the unit firing. 6. Make sure the flame rod is tight in its mounting bracket. You should not be able to move it with your finger if the gasket is intact. If you remove the flame rod it is very important to note the orientation before removal. After removing it, clean it with a dollar bill. Re‐install the flame rod in the same orientation as it was before removal. You MUST replace the flame rod/igniter gasket before reassembly. Note; a loose flame rod is called a floating flame rod and will result in code 12's. Flame rods should never have to be replaced unless the white ceramic is cracked or broken or the flame rod is damaged. 8. Inspect flame rod wires looking for loose or damaged wires or connectors at the flame rod and PC board. 9. Inspect flame rod silicone protective sleeve for cracks or heat damage. If cracked or has heat damage the spark could possibly seek a grounding source other than the intended target though the igniter, replace the sleeve. 10. A properly grounded circuit is critical. Check to ensure all ground connections are intact, free of corrosion, tight at each joint or connection and the polarity of the circuit is correct. If unsure contact a Licensed Electrician to inspect and/or correct any issue with the circuit. 11. Pull the unit's burner and inspect for debris and/or condensate around the burner located at flame rod position. Clean all burners using 120 psi of compressed air. Blow out combustion chamber and ...
Page 165 13. Ensure installer used the condensate drain tap as recommended by Rinnai on the vent terminal connection at the top of the water heater, non‐condensing product. If the condensate drain line is not connected please install one per Rinnai venting instructions. If a condensate line is in use, inspect the vent connector on top of water heater to ensure it’s not stopped up. If stopped up remove vent pipe from unit and clean out all debris or build up in the trap or drain lines. 14. Inspect fan blower wheel for debris and/or insects. Important; turn off power to unit before unplugging fan motor or plugging it back up. Failure to do so can short out fan motor. If insects or debris are found in the fan housing or burner assembly, inspect the entire intake air chamber to include the vent system and air box chamber. 15. Check to ensure all two stages regulators are installed at least six foot away from appliance. Ensure when appliance shuts off the pressure from the two stage regulator doesn't exceed the maximum inlet pressure for the appliance. To check this, connect your manometer up to the test port on the bottom of the water heater. The inlet pressures should never exceed 10 inches water column for natural gas or 13.5 inches on propane. If it does the regulator may be defective. 16. Inspect all wiring harnesses throughout unit for water or moisture in electrical connections. If any connections appear to be damp or wet dry them out and try to find out what is causing this. This can cause a short circuit which will lead to code 12. 17. If any MSA or MSB system is in use isolate the unit from that system and see if it operates without going to a code 12. A short circuit within those systems can cause a code 12. 18. See below for other suggestions: a. Remove the four burners located under the flame rod and move them over to the high fire side of the burner tray. Move the four burners from the high fire side over under the flame rod. Sometimes condensate or debris can get down in the burners and cause turbulence inside the burner. b. Condensate, debris or a malfunctioning mechanical component inside the gas valve may be preventing the valve from opening correctly once in a while. Replace gas valve. c. Voltage output to gas valve from PC board could be incorrect or intermittent due to a bad component on PC board, replace PC board. ...
Page 166 unit will try to fire three times. That will not occur on the immediate code 12. The fan motor may try to come on but immediately goes into a code. The immediate code 12 or 19 is an indication of a short circuit within the appliance. Could be a short in a wiring harness, water flow control or bypass valve or any other component within the DC circuit. One way to track this down is to unplug one component at a time and try to cycle the unit on. If you unplug any component and the unit cycles three times after unplugging it, the short is in that device. 14 ...
Page 167 1. Verify the unit is connected to the proper gas type; see rating plate for gas type of unit. 2. Check to ensure this unit has ever been converted from one gas type to another? If it was converted verify conversion was performed per manufacturer’s specifications. See conversion procedure for the model number unit at your location. 3. Verify proper clearances were maintained around unit and vent terminals. 4. Inspect the safety circuit wiring harness for loose connectors, damage or broken wires. 5. Ohm out safety circuit to determine if the bi‐ switch is open or if the issue is a blown thermo‐ fuse. 6. Verify all dip switches are set per manufacturer’ recommendations, contact Rinnai for details on proper settings if you need assistance. 7. Verify force low and high fire manifold gas pressures, check using a manometer. Procedure for checking these pressures can be found on the back side of the front cover. If you need assistance contact Rinnai technical services 24/7 for details on now to check these pressures. You must have a manometer to check operating gas pressures. 8. Check system operation to see if the water heater is continuously short cycling. If so, heat from short cycling can transfer into the copper heat exchange and trip the bi‐metal switch. Investigate to see what is causing the short cycling such as aqua‐stats with a low delta T. 15 ...
Page 168 Increase set point of aqua‐stat by at least twenty degrees lower than the water heater's set point. This will normally stop the unit from short cycling. 9. Inspect burner manifold, burner assembly and heat exchanger copper fins for debris build‐up or blockage. If you find debris build‐up inside the heat exchanger that has led to a code 14, replace the heat exchanger. 10. Inspect the front, sides and back of the heat exchanger surface for cracks, separations, discoloration or damage of any kind. If you find any of the above mentioned items replace the heat exchanger. 11. Inspect all components inside the water heater cabinet for signs of excessive heat damage. Take note of the copper surface of the heater exchange where the combustion box and copper meet for discoloration. If discoloration (black) surface is noted replace heat exchange. This indicates a blockage or debris build up between the copper fins inside the heat exchange. 12. Verify venting is within vent clearance specifications and lengths per manufactures’ recommendation. 13. If code 14 still appears after performing the above inspections, replace PC board. 16 ...
Page 169 Code 16 Troubleshooting Procedure Over Temperature Warning (Safety shutdown because unit is too hot) 1. Check for low flow in circulation system causing short cycling. 2. Check for foreign materials in combustion chamber and/or exhaust piping. 3. Check for blockage in the heat exchanger fins. 4. Clean out heat exchanger fins or replace heat exchanger. 17 ...
Page 170 Code 19 Troubleshooting Procedure Electrical Grounding 1. Check all components for electrical short. 18 ...
Page 171 Code 25 Troubleshooting Procedure Condensate Trap is full 1. Inspect condensate drain line for blockage. 2. Inspect condensate trap and tank inside cabinet for blockage. 3. Ensure condensate line has an air gap between the unit and drain line leaving the water heater. Check sensor wiring harness for loose, broken or damaged connections from sensor back to PC board. 5. If condensate tank is draining and the unit is still throwing a code 25 replace condensate tank with sensor. 19 ...
Page 172 1. Check low/high fire manifold pressures for proper settings. See gas pressure setting procedure located under the front cover of unit in the technical data sheet. In addition, can be found in the product’s service manual. Set manifold pressures per instructions for your altitude. 2. Verify all dip switches are set to the proper position on the PC board. See technical data sheet for proper settings at your altitude. 3. Measure milli‐volt (mV) reading of burner thermocouple. The thermocouple milli‐volt range should be between 20 to 27 mV under normal combustion. If the reading exceeds 30 milli‐volts or is less than 8 milli volts the unit will go into a code 31. If the thermocouple mV output is above 30 mV during combustion that indicates the unit may be over fired. Verify your high fire manifold pressures. If gas pressures are found to be within specifications, remove burner manifold and burners. Check for blockage between heat exchanger fins. If clogged clean all debris from fins or replace heat exchanger. If the thermocouple reading is below 8 mV during combustion that indicates low gas pressure or low Btu content gas. In other words the thermocouple is not senses a high enough temperature inside the combustion chamber due to pressures or gas issues. Verify your forced low fire gas pressure. If pressure is found to be within specifications, contact Rinnai tech support for assistance. 4. Replace thermocouple. 20 ...
Page 173 Code 32 Troubleshooting Procedure Outgoing Water Temperature Thermistor Fault 1. Check thermistor wiring harness for loose, broken or damaged connections from thermistor back to PC board. 2. Turn off water supply to the water heater and drain system down. With no water left in hot water supply lines remove the thermistor and check for scale build up on thermistor. Clean off any substance found on this component. Proceed to item #3 below. 3. With water supply still isolated and thermistor removed from unit, check resistance readings of this component using a volt/ohm meter capable of reading 20K ohms. Set meter to proper setting for checking 20K ohms and insert meter leads into each end of the thermistor plug. Then apply heat to the thermistor bulb. You will notice the thermistor resistance reading start to drop when heat is applied. A simple way to apply heat is to place the thermistor bulb between your thumb and another finger and apply pressure. The heat from your body will cause the resistance reading to decrease. If the thermistor reading starts to decrease with heat applied normally that indicates the component is functioning properly. The resistance reading will increase if ice is placed against the bulb. Typical resistance values are 11.4 – 14K ohms at 59 degrees ⁰F, 6.4 – 7.7K ohms at 86 ⁰F, 3.6 – 4.5K ohms at 113⁰F, 2.2 – 2.7K at 140 ⁰F or 0.6 – 0.8K at 221 ⁰F. If thermistor readings are correct re‐install this component ensuring the small O‐ring is still intact in thermistor well before installation. Place a small amount of grease or lubricant on the O‐ring to prevent damaging it during installation. Turn water supply back on and check for leaks around this component. Next re‐fire the unit to see if you still get a code 32. If so, replace the thermistor. ...
Page 174 Code 33 Troubleshooting Procedure Heat exchanger outgoing thermistor 1. Check thermistor wiring harness for loose, broken or damaged connections from thermistor back to PC board. 2. Turn off water supply to the water heater and drain system down. With no water left in hot water supply lines remove the thermistor and check for scale build up on thermistor. Clean off any substance found on this component. Proceed to item #3 below. 3. With water supply still isolated and thermistor removed from unit, check resistance readings of this component using a volt/ohm meter capable of reading 20K ohms. Set meter to proper setting for checking 20K ohms and insert meter leads into each end of the thermistor plug. Then apply heat to the thermistor bulb. You will notice the thermistor resistance reading start to drop when heat is applied. A simple way to apply heat is to place the thermistor bulb between your thumb and another finger and apply pressure. The heat from your body will cause the resistance reading to decrease. If the thermistor reading starts to decrease with heat applied normally that indicates the component is functioning properly. The resistance reading will increase if ice is placed against the bulb. Typical resistance values are 11.4 – 14K ohms at 59 degrees ⁰F, 6.4 – 7.7K ohms at 86 ⁰F, 3.6 – 4.5K ohms at 113⁰F, 2.2 – 2.7K at 140 ⁰F or 0.6 – 0.8K at 221 ⁰F. If thermistor readings are correct re‐install this component ensuring the small O‐ring is still intact in thermistor well before installation. Place a small amount of grease or lubricant on the O‐ring to prevent damaging it during installation. Turn water supply back on and check for leaks around this component. Next re‐fire the unit to see if you still get a code 33. If so, replace the thermistor. ...
Page 175 If thermistor readings are correct re‐install this component into the thermistor well. Next re‐fire the unit to see if you still get a code 34. If so, proceed to item #3 below. 3. Verify the unit is connected to the proper gas type; see rating plate for gas type of unit. 4. Check to ensure this unit has ever been converted from one gas type to another? If it was converted verify conversion was performed per manufacturer’s specifications. See conversion procedure for the model number unit at your location. 5. Verify proper clearances were maintained around unit and vent terminals. 6. Verify all dip switches are set per manufacturer’ recommendations, contact Rinnai for details on proper settings if you need assistance. 7. Verify force low and high fire manifold gas pressures, check using a manometer. Procedure for checking these pressures can be found on the back side of the front cover. If you need assistance contact Rinnai technical services 24/7 for details on now to check these pressures. You must have a manometer to check operating gas pressures. 8. Inspect burner manifold, burner assembly and heat exchanger copper fins for debris build‐up or blockage. 9. Verify venting is within vent clearance specifications and lengths per manufactures’ recommendation. 10. If code 34 still appears after performing the above inspections, replace thermistor. ...
Page 176 Code 41 Troubleshooting Procedure Freeze Protection Sensor for External Units 1. Check sensor wiring harness for loose, broken or damaged connections from sensor back to PC board. 2. Ensure sensor is open to outside air and not covered with insulation. 3. With water supply still isolated and sensor removed from unit, check the resistance readings of this component using a volt/ohm meter capable of reading 20K ohms. Set meter to proper setting for checking 20K ohms and insert meter leads into each end of the sensor plug. Then apply heat to the sensor bulb. You will notice the sensor resistance reading start to drop when heat is applied. A simple way to apply heat is to place the sensor bulb between your thumb and another finger and apply pressure. The heat from your body will cause the resistance reading to decrease. If the sensor reading starts to decrease with heat applied normally that indicates the component is functioning properly. The resistance reading will increase if ice is placed against the bulb. Typical resistance values are 11.4 – 14K ohms at 59 degrees ⁰F, 6.4 – 7.7K ohms at 86 ⁰F, 3.6 – 4.5K ohms at 113⁰F, 2.2 – 2.7K at 140 ⁰F or 0.6 – 0.8K at 221 ⁰F. If sensor readings are correct re‐install this component ensuring the small O‐ring is still intact in sensor well before installation. Place a small amount of grease or lubricant on the O‐ring to prevent damaging it during installation. Turn water supply back on and check for leaks around this component. Next re‐fire the unit to see if you still get a code 51. If so, replace the sensor. 24 ...
Page 177 Code 51 Troubleshooting Procedure Inlet Water Temperature Sensor 1. Check sensor wiring harness for loose, broken or damaged connections from sensor back to PC board. 2. Turn off water supply to water heater and drain system down. With no water left in hot water supply lines remove the sensor and check it for scale build up. Clean off any substance found on this component. Proceed to item #3 below. 3. With water supply still isolated and sensor removed from unit, check the resistance readings of this component using a volt/ohm meter capable of reading 20K ohms. Set meter to proper setting for checking 20K ohms and insert meter leads into each end of the sensor plug. Then apply heat to the sensor bulb. You will notice the sensor resistance reading start to drop when heat is applied. A simple way to apply heat is to place the sensor bulb between your thumb and another finger and apply pressure. The heat from your body will cause the resistance reading to decrease. If the sensor reading starts to decrease with heat applied normally that indicates the component is functioning properly. The resistance reading will increase if ice is placed against the bulb. Typical resistance values are 11.4 – 14K ohms at 59 degrees ⁰F, 6.4 – 7.7K ohms at 86 ⁰F, 3.6 – 4.5K ohms at 113⁰F, 2.2 – 2.7K at 140 ⁰F or 0.6 – 0.8K at 221 ⁰F. If sensor readings are correct re‐install this component ensuring the small O‐ring is still intact in sensor well before installation. Place a small amount of grease or lubricant on the O‐ring to prevent damaging it during installation. Turn water supply back on and check for leaks around this component. Next re‐fire the unit to see if you still get a code 51. If so, replace the sensor. ...
Page 178 Code 52 Troubleshooting Procedure Modulating Solenoid Valve Signal Abnormal (POV) 1. Check wiring harness for loose, broken or damaged connections from POV valve back to PC board. 2. Unplug POV valve using a volt/ohm meter and check resistance readings across the POV coil on the gas valve. The proper resistance reading for this coil can be found in the Tech Data Sheet found on the back side of the unit’s front panel or in the Rinnai Water Heater Service Manual for that model unit. If you find the coil to be open replace the gas valve. If resistance reading is found to be within specification, proceed to item #3 below. Note: resistance readings can vary from meter to meter based on the meter’s accuracy range and battery life. A weak battery can affect readings; replace your battery if in doubt before performing service. In addition; make sure you have you meter set to the correct resistance (ohm) setting and the component being checked is isolated from the unit’s circuit and power supply. 3. Check voltage to the POV valve while unit is trying to fire. If you have the proper voltage but keep getting an error code proceed to the next item. 4. If code 52 still appears after performing the above inspection replace the PC board. ...
Page 179 Code 57 Troubleshooting Procedure Burner Overheat Bi‐metal Switch 1. Check burner overheat bi‐metal switch wiring harness for loose, broken or damaged connections from sensor back to PC board. 2. Verity unit is connected to the proper type gas. Example; if a natural gas unit, should be connected to natural gas. 3. Verify low/high fire manifold pressures are set properly. See gas pressure setting procedures for pressure setting at your elevation. 4. Clean sensor. 5. If unit was ever converted from one gas type to another, verify the conversion process was preform per the manufacturer’s instructions and all pressures and dip switch were set to match the gas type unit was converted too. 6. Replace sensor ...
Page 180 Code 58 Troubleshooting Procedure Secondary Heat Exchanger Sensor 1. Check sensor wiring harness for loose, broken or damaged connections from sensor back to PC board. 2. This code indicates a scale build‐up inside the secondary heat exchanger and it needs to be flushed to prevent damage. Refer to flushing instructions in the owner manual. Hard water must be treated to prevent scales build‐up or damage to the heat exchanger will occur. 28 ...
Page 181 Code 61 Troubleshooting Procedure Combustion fan Motor NOTE: Before servicing fan motor turn off power supply to the unit. Never attempt to plug up or unplug motor while power is supplied to product. Failure to follow this procedure could lead to damaged components including fan motor. 1. Check wiring harness for loose, broken or damaged connections from fan motor back to PC board. 2. Remove fan motor with power supply to product turned off. Inspect blower wheel to ensure it turns freely. 3. Check fan housing for debris that could prevent the fan wheel from turning. 4. Measure fan motor winding resistance, see technical data sheet behind front cover or in service manual for proper resistance readings. If windings are open replace motor. 5. If motor windings are within specifications and fan motor turns freely, replace PC board. 29 ...
Page 182 Code 65 Troubleshooting Procedure Water Flow Servo 1. Check wiring harness to the water flow servo for loose, broken or damaged connections from servo back to PC board. 2. Turn off the power to the water heater and then reapply to see if code resets. 3. The water flow servo valve has failed to close during the bath fill function. Immediately turn off the water flow and discontinue the bath fill function. 4. Replace water flow control servo. 30 ...
Page 183 Code 70 Troubleshooting Procedure PC Board Fault 1. Check all wiring harness at the connection to the PC board to ensure they are not loose, broken or damaged. 2. Check all dip switches to ensure they are set to the proper position. 3. Replace PC board. 31 ...
Page 184 Code 71 Troubleshooting Procedure SV0, SV1, SV2, SV3 Solenoid Valve Fault NOTE: Before servicing product disconnect power supply to the unit. 1. Check wiring harnesses to SV0, SV1, SV2 and SV3 for loose, broken or damaged connections from gas valve solenoids back to PC board. 2. Check for moisture in plastic tubing on internal units from bottom of combustion box back to gas valve. If moisture is found in this tube replace gas valve. In addition; remove burner manifold and burner assembly to determine what is causing the moisture. Look for a leaking heat exchanger or condensation coming from the vent system. If the heat exchanger is leaking replace it and any other components damaged due to that leak. If the moisture is caused by condensation running back into the unit from the vent system make provisions to stop this by installing a condensate drain line at the top of said unit. 3. Check voltage to SVO and SV1 while unit is trying to fire. If you have proper voltage but keep getting an error code proceed to item 4 below. 4. Measure the resistance of SV0, SV1, SV2 and SV3 if any of the solenoid valves are found to be open, meaning having no resistance replace the gas control valve. 5. If you are still getting a code 71 replace the gas control valve. You may get a good resistance reading upon unplugging the wires, however under load it could open or you may have a mechanical problem inside the valve that won't allow the valve open. 6. Replace PC board ...
Page 185 Code 72 Troubleshooting Procedure Flame Sensing Device Fault NOTE: Before servicing product disconnect power supply to the unit. 1. Check wiring harnesses to flame rods for broken or damaged connections from flame rod back to PC board. 2. Ensure flame rod is touching flame when unit fires. 3. Remove flame rod and check for carbon build‐up. Clean flame rod with dollar bill. 4. Check inside burner for debris build up that may be shorting out flame rod. If debris on the burner is touching flame rod this could cause a short circuit and throw a code 72. 5. Measure micro amp output from flame rod, should maintain a minimum of 1 micro amp. 6. Replace flame rod, flame rod gasket and PC board. 33 ...
Page 186 Code 73 Troubleshooting Procedure Burner Thermocouple Fault 1. Check wiring harness at burner thermocouple back to PC board for loose, broken or damaged wiring or connections. 2. Verify all dip settings are set to the proper alitiube per the tech sheet found under the front panel of your unit. This information can also be found in the product’s service manual. 3. Confirm low/high fire manifold gas pressures are set to factory specification per alitiube unit is installed at. Manifold gas pressure settings and directions can be found on the tech sheet under front panel of the unit or in the service manual. 4. Replace burner thermocouple. If code reappears after replacing this component replace PC board. 34 ...
Page 187 Code 79 Troubleshooting Procedure Water Leakage Detected 1. Check wiring harness at leak detector for loose, broken or damaged wiring or connections. 2. Check the heat exchanger and all piping inside the unit for leaks. 3. If no leaks are found inspect inside of cabinet for signs of water pooling on bottom pan of water heater. Wipe or blow out any water found in cabinet. Dry off leak sensor and restart unit. 4. If no water is found in cabinet unplug sensor and fire water heater. If unit operates with sensor unplugged replace sensor and screw. 35 ...
Page 188 No Code Troubleshooting Procedure Nothing happens when water flow is activated 1. Clean water inlet filter to water heater. 2. On new installations ensure the hot/cold water lines are not reversed. 3. Ensure you have the minimum flow rate required to fire the unit. 4. Ensure water flow control turbine spins freely. 5. Measure the resistance of the water flow control sensor, see technical data sheet behind front cover of unit for proper readings. 6. Check for bleed overs, isolate unit from building by turning off hot water line to building. Next isolate the circulation system if present. Open your pressure relief valve; if water is flowing, there is a bleed over in your plumbing system. 36 ...
Page 189 Code e LC, LC0 – LC9 T roublesh hooting Procedu ure Scale build‐ up in Heat Exc changer NOTE E: Before serv icing product t disconnect p power supply y to the unit. . Flush heat e exchanger per r recommend ded flushing p procedure fou und in unit’s o owner’s man ual. . NOTE; the L C, LC0 – LC9 c codes are the e only codes t that will allow w a unit to con ntinue to ope erate. he display wi ll alternate be etween the L C codes and t the temperat ture setting. T The controlle...
Page 190 Code FF Troubleshooting Procedure Indicates a serviceman has serviced product This code indicates a service provider performed maintenance or repair. The serviceman will enter the following code FF after making repairs to the product. That flags the system indicating all codes after the FF took place after he made his repairs. You can enter the FF code by; pressing the up, down and ON/OFF buttons simultaneously. 38 ...
Page 191 Cold Water Sandwich caused by faulty fixture: 1. Have customer explain problem. 2. Turn off hot water ball valve on the Rinnai valve kit at the water heater. This should shut off the water flow to all hot water fixtures at the location. Turn on a hot water fixture to check and see if any water continues to flow at that fixture. After roughly two minutes all residual water in the system should bleed down to no flow at your fixtures. If water continues to flow at any flow rate you have a faulty fixture, check valve, or a cross over in the plumbing system. Plumber or contractor must locate faulty fixture and correct bleed over. 3. Ask the customer if the location has a circulating system. If so; isolate to circulation loop from the plumbing system by means of a shut off valve in the return loop. We are trying to ensure water is not bypassing the water heater through a faulty check valve in the return loop. After shutting off the ball valve in the circulating loop, all water flow should stop. If not, you may still have a faulty fixture. 4. Proceed to all fixtures with single handle levers, shut off the cold water ball valve at each fixture one at a time. Check flow after shutting off the cold water line at each fixture. If water flow stops during this process, go back to the last fixture turned off and open the cold water ball valve. If flow starts back that fixture has a bad diaphragm in it. You can either replace the faulty fixture insert or install a check valve in the hot water feed to prevent cold water from back feeding. Notify plumber or contractor of faulty fixture. 5. If location has a mixing valve isolate mixing valve, turn off the cold water feed to that device. If the water temperature reaches temperature and continues to maintain temperature with the mixing valve isolated, the problem is in the mixing valve. 39 ...
Page 192 Cold Water Sandwich caused by Low Flow: 1. Open fixture and record flow rate using the water heater’s temperature control pad. 2. Shut off hot/cold water feed lines to the water heater, remove inlet water filter and check for debris, clean if necessary. Re‐install filter, turn on water supply. Open the same tap again and recheck your flow rate to see if it increased. If flow rate is less than one gpm remove the restrictor and clean the strainer in that fixture. You should have at least one gpm of flow at all fixtures. Otherwise; pressure drops in the plumbing system due to improperly sized plumbing can cause the flow rate to drop below the minimum flow rate requirement of the unit. This will cause the unit to cycle on/off causing a cold water sandwich. 3. Cold water sandwiches can be created by numerous items such as; a. Improperly installed, faulty, or flapping check valves. Swing check vales should be installed with the hex cap horizontal, facing upwards. b. Debris in the fan motor blower wheel causing the unit to ramp up and down in Btu’s due to cycling. c. Clogged inlet water filter causing restricted water flow. Always clean filter on all service calls. d. Inlet gas pressure changing due to under sized meters, regulators, gas lines or systems, tanks, etc. Must ensure gas system is sized properly. Check inlet gas pressure while the unit is operating looking for inlet gas pressures surging up and down. This would indicate an issue with the gas supply. e. Inlet water pressure fluctuating causing the unit to cycling on/off on low flows. Can be caused by fluctuating water supplies due to improperly sized plumbing systems, well system problems, and utility water systems fluctuating. MSA system cycling especially if unit #1 has a clogged filter or restricted flow for whatever reason. If unit #1 is creating the issue, may have to install a PVA valve to resolve. g. Faulty valve diaphragm can cause a fixture to bleed over. Could be a fixture up or down stream from area experiencing sandwich. h. Standard use of water in a plumbing system without circulation when customer turns hot water off and someone else comes up behind them with a few minutes and uses hot ...
Page 193 when the water is turned back on within a few minutes of the demand system cycling, and cold water sandwich is created. Loose or bad electrical connection inside the water heater or power supply to product. Power supply could be dropping out momentarily due to a component heating up, loose wiring connections, etc. k. Low flow shower heads especially in area with high ground water temperatures. 41 ...
Page 194 How to re e trieve flow w rate/tem m perature o o utput 42 ...

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