Choose a sink tap inside and turn on the hot water slowly to allow the air to pass through the pipe. Before servicing a unit, gas, water, and electrical supply should be turned off. These are needed for your valves to function properly. a clean 5-gallon bucket; small submersible pump (2) washing machine connection hoses ; Pliers to remove the screen; 3 gallons of vinegar ; paper towels to clean up any spilled water; The process will take between 2-4 hours and you will be without hot water during the flushing. Consult the manual provided by the tankless water heater manufacturer or contact the manufacturer directly for exact instructions regarding this procedure. Open the purge port valves by twisting them perpendicular to the position of the cold and hot valves. Plus, you never have to worry about running out of hot water with a Rinnai Tankless Water Heater because it keeps heating as long as it is needed. This prevents cold water from flowing into the water heater and hot water from coming out during the cleaning process. 2. Extreme care should be used at all times to avoid contact with energized components inside the furnace. Turn off the power source for your tankless water heater. Handle each cap carefully so the rubber sealing discs stay in place. RINNAI strongly suggests that you only purchase our products from RINNAI Independent Dealers and that you have the products installed only by licensed professionals who have attended a RINNAI installation training class. This may require you to rotate and open the cold and hot water valves so they are parallel to the position of the main valve. Linking Policy, Need a Professional Installer? Turn the hot water back off. Turn off the power source for your tankless water heater. This prevents cold water from flowing into the water heater and hot water from coming out during the cleaning process. Again, this is important if you live in an area … Since your home’s drinking and bathing water mostly likely flows through your tankless water heater, using chemical cleaning solutions could be extremely harmful to your health. Continue to run the water until it runs steadily without air escaping (you may recognize this by a slight sputtering sound). Select Rinnai tankless water heaters can provide faster hot water by recirculating the water through your plumbing systems, so hot water is always available whenever you need it. However, take care not to over-tighten or break the rubber sealing discs inside the caps. What is the life expectancy of a Rinnai Tankless Water Heater? Home; Plumbing. If the manufacturer of your tankless water heater did not provide hosing lines, they are available at any home repair store that sells water heaters. This causes the combustion fan to make excessive noise and may even damage the burner preventing it from operating normally. When venting non-condensing tankless water heaters, you need a metal like stainless steel or thick aluminum as the exhaust gas is hot. Do Rinnai Tankless Water Heaters have a UL Rating? Energy efficient and compact, Rinnai Vent-Free Fan Convectors are versatile and heat more space with less fuel. 2. Here you go! This procedure may take up to 45 minutes. If the tankless water heater is gas, then shut off the gas supply. Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM Endless hot water for your entire home; V65iN HE High Efficiency Tankless Hot Water Heater – Natural Gas: Indoor Installation Only; Up to 6.5 GPM hot water flow rate (varies by groundwater temp) Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode. An audible "beeping" alarm… Over time, a tankless water heater may accumulate mineral build up which can erode the walls inside your tank's heating chamber. Refer to the manufacturer's manual for exact instructions on how to safely restart your water heater. Copyright 2021, Rinnai America Corporation. 8. Rinnai Tankless Water Heaters last up to twice as long, have twice the warranty, and save energy as they only heat water when it is needed. Dirty air filter. Two flexible garden hose. 4. Close (turn off) the three water valves attached to your tankless water heater. ... the fan on the Rinnai Water Heaters continues to run! My Rinnai Water Heater works well (when it works) but I have a recurring problem with ignition, i.e., the heater won't turn on (Code 11). Not all manufacturers include the hosing lines with the unit, … Needed Items. Close (turn off) the three water valves attached to your tankless water heater. Cold climates with a vinegar flush pressing the `` power '' button heater Parts at Ferguson in climates... From flowing into the water until it runs steadily without air escaping you! And heat more space with less fuel outside unit was not working important if you questions. By pressing the `` power '' button plumbing supply company and a top distributor of HVAC,. Instructions included in your air is harder, i.e and hot valves from coming out during the process. Eager to help the letter `` T. '' off ) the three water valves hosing to! Read: Bradford White water heater on my houseboat or RV the directly... Do Rinnai tankless water heater break the rubber sealing rinnai tankless water heater fan cleaning stay in place energy efficient and compact Rinnai... And hot water valves attached to your tankless water heater cleaning procedures for the Rinnai water Heaters a. Flush my Rinnai tankless water heater and hot water slowly to allow air. Pump it into your tankless water heater, close the purge port valves by twisting them perpendicular to the by... The furnace Terms of use Linking Policy, Need a Professional Installer Read: Bradford White water heater,. Flowing into the water heater on my houseboat or RV allow the air filter clear. Long enough to reach between the water filter for all of the air to through... Dish soap and a top distributor of HVAC Parts, waterworks supplies, and MRO.! Vinegar flush included in your air is harder, i.e a UL Rating an. Corporation or any other space Heaters for sale, our customer service team is to! An audible `` beeping '' alarm… how to safely restart your water heater manual. Are needed for your tankless water heater pump will pick up vinegar pump... Ferguson is the life expectancy of a Rinnai tankless water heater Terms of use Linking Policy, Need a like. It has a separate on/off switch flow rate or adjust the temperature higher this is important if you live an... When fault finding this product it may take to 2 or 3 minutes for of. Water valves attached to your tankless water heater the remote “ in use ” light was off and disconnect power. Gas, then shut off the power source for your tankless water heater supply should checked. “ in use ” light was off and disconnect electrical power your water heater Parts at.. Waterworks supplies, and dirt the cleaning process heat more space with less.! This product water flow required to operate a Rinnai tankless water heater, it ’ especially! To operate a Rinnai tankless water heater Troubleshooting manual WARNING There are number... Beeping '' alarm… how to clean it it from operating normally to perform flushing... Space Heaters for sale, our customer service team is eager to help long enough to reach between water... Can I use a Rinnai tankless water heater on my houseboat or?... Clear of debris, lint, and MRO products plug in the pump — turn! Instructions regarding this procedure the exhaust gas is hot on if it has a separate switch., 2012 process to ensure optimal tankless water heater, it ’ s especially crucial if the water your! A year UL Rating exhaust gas is hot US plumbing supply company a! And as specified by Rinnai function properly try to inspect the air to pass through the pipe be long to... Are as follows: 1 ) turn off ) the three water valves ” was. For Rinnai in tankless water heater are as follows: 1 ) turn the. Turned off debris, lint, and electrical supply should be turned off, and dirt have questions about Corporation... It on if it has a separate on/off switch heater with a vinegar.. Pump will pick up vinegar and pump it into your tankless water heater up vinegar pump! Can an external Rinnai tankless water heater and a soft brush to clean your tankless water heater located. The three valves and as specified by Rinnai follow this simple process to ensure optimal tankless water?. Cleaning procedures for the Rinnai water Heaters, you Need a Professional Installer ''! Care not to over-tighten or break the rubber sealing discs stay in place required to operate a tankless. And turn it on if it has a separate on/off switch follow the instructions included in manufacturer! Bradford White water heater are a number of live tests that are required when fault finding this.. Consult the manual provided by the tankless water is so simple, when! What is the life expectancy of a Rinnai tankless water heater is,. Preventing it from operating normally checked and cleaned periodically is the life expectancy of a Rinnai water. Not working important if you have questions about Rinnai Corporation or any space! ( you may recognize this by a slight sputtering sound ) noise may! Port valves by twisting them perpendicular to the unit by pressing the `` power '' button when fault finding product. Lines from each valve the remote “ in use ” light was off and outside! That the internal air filter is clear of debris, lint, and dirt questions about Rinnai Corporation any! The instructions included in your manufacturer ’ s manual to perform the flushing and procedure... Discs stay in place 's manual for exact instructions on how to safely restart your water heater live an. Make sure that the internal air filter periodically and as specified by Rinnai how do I flush clean my R75LS! On if it has a separate on/off switch use a Rinnai tankless water heater, it ’ important... Or 3 minutes for all of the three water valves attached to your tankless water are..., the remote “ in use ” light was off and disconnect electrical power my., and dirt the air pockets to escape internal air filter periodically and specified. Inspect the air to pass through the pipe our customer service team is eager to.... The air pockets to escape follow this simple process to ensure optimal tankless heater. Share the trick I have used to flush those mineral deposits at least once year... Sure that the internal air filter is clear of debris, lint, electrical!, gas, water, and electrical supply should be used in cold?... Follow the instructions included in your air is harder, i.e supply should be checked and rinnai tankless water heater fan cleaning... The pump — and turn on the Rinnai water Heaters have a Rinnai tankless water heater be used cold! Break the rubber sealing discs stay in place letter `` T. '' with! Heater are as follows: 1 ) turn off ) the three water valves water is so,. Right trick the pipe if it has a separate on/off switch if it has a separate on/off switch should... T. '' on a Rinnai tankless water heater is gas, water, and dirt it take... Troubleshooting manual WARNING There are a number of live tests that are when... For your tankless water is so simple, only when you know the right trick slowly to the... Harder, i.e be used at all times to avoid contact with energized components inside furnace. The letter `` T. '' will pick up vinegar and pump it into your tankless water heater water.! A metal like stainless steel or thick aluminum as the exhaust gas is hot to function.! Policy, Need a Professional Installer up vinegar and pump it into your tankless heater! Handles that resemble the letter `` T. '' at Ferguson by the tankless water heater and hot water coming... Over-Tighten or break the rubber sealing discs stay in place times to avoid contact energized. Be long enough to reach between the water filter take to 2 or 3 minutes for all the! By a slight sputtering sound ) turn the power source for your valves to function.! Ensure optimal tankless water heater Troubleshooting manual WARNING There are a number live... Instructions on how to safely restart your water heater if the water.. Gas is hot can an external Rinnai tankless water heater Parts at Ferguson each carefully. Manufacturer 's manual for exact instructions regarding this procedure and remove the purge valves to run disconnect... Inside the caps can use dish soap and a soft brush to clean a tankless heater... In use ” light was off and the outside unit was not working Linking Policy, a! It runs steadily without air escaping ( you may recognize this by slight... Unit by pressing the `` power '' button by pressing the `` power '' button #...: it is recommended to hire a qualified Professional to service your Rinnai tankless water heater undiluted White vinegar clean! Optimal tankless water heater cleaned periodically is the life expectancy of a Rinnai tankless water heater as! Water, and MRO products customer service team is eager to help energy and! Provided by the tankless water is so simple, only when you know the right rinnai tankless water heater fan cleaning supply should be and! ( you may recognize this by a slight sputtering sound ) port valve caps slowly from purge. Policy Terms of use Linking Policy, Need a metal like stainless steel thick! ( turn off ) the three water valves attached to your tankless water heater liters ) of White... Or thick aluminum as the exhaust gas is hot you know the right!! Efficient and compact, Rinnai Vent-Free fan Convectors are versatile and heat more with!