21 in. . A tankless water heater is considered the most modern heating device to supply continuous hot water flow. In decades past, all combustion appliances (for example, gas-fired water heaters, furnaces, and boilers) took their combustion air from inside the house. I highly recommend you hire a professional to do this task for you. SPECIFICATIONS Model Name Gas Input Rate RTGH-RH11DV RTGH-RH10DV MAX 199,000 Btu/h 180,000 Btu/h MIN 18,000 Btu/h 18,000 Btu/h High Altitude (2,500~4,500ft) 180,000 Btu/h 180,000 Btu/h 35F Rise 11.0 Gal 9.9 Gal 45F Rise 8.5 Gal 7.7 Gal 77F Rise 5.0 Gal 4. Now, its important to note that the maximum temperature setting on most models is 140 degrees Fahrenheit. With their energy efficiency, endless hot water supply, compact size, longer lifespan, and environmental friendliness, they can be an excellent investment for your home. Just take the air filter out from the top of the water heater. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. PRODUCT AND SAFETY INFORMATION.7 1. See Figure 23. Water Filter Cleaning water heater burner, relief valve, air intake filter, water filter, and venting system be made by a qualified service technician. FINAL INSTALLATION CHECKLIST YES NO Is there enough space to ensure proper installation? Years of experience in the HVAC field have taught him many lessons, not the least of which is that the value of quality and knowledge far exceeds any promised initial savings. On Rheem water heaters, the reset button is usually a red button located near the thermostat, at the middle of the limit switch. Tankless water heaters that do not come with a relief valve are more prone to leakages. CONNECTOR NO. Takagi Water Heater Error Codes [Ultimate Guide], Rheem Tankless Water Heater Maintenance Schedule, Rheem Tankless Water Heater Maintenance: The Step-by-Step Procedure, Safety Tips You Must Follow While Performing Maintenance Workflow, Rheem Gladiator Water Heater Service Needed Light: What Does It Mean, Bradford White Water Heater Troubleshooting [The Complete Guide], Basement Watchdog Battery Alarm Add Distilled Water, Basement Watchdog Battery Alarm [Corroded Terminals Or Bad Battery], Basement Watchdog Pump Was Activated Alarm. How Does A Rheem Tankless Water Heater Work? Visually inspect the intake piping for any signs of blockage. Dont yall know that tankless is the way to go? Alternatively, you can check the following video that gives complete instructions on Rheem water heater flushing. The filter ensures safe and reliable operation of your water heater. Rheem error code 21 means the air intake filter is not working correctly. If no obstructions are found, reset the water heater by pressing the power button. Once you drain all the water, its time to remove the water filter. Once you drain every single drop of water, detach the garden hose from the drain valve and close the drain valve. Range: on Common Venting is used, oFF Common Venting is not used 14:T1 oFF Test Mode 1 Used to test the water heater when operating in Internal Recirculation Mode only. There are no serviceable parts which can be changed by the user / owner. Your email address will not be published. The boiler produces 71 gallons of hot water per hour and has an energy factor of 0.58. Monitor the water flow pressure. 3.2. BEFORE OPERATION 1. Make sure that the valve is well tightened. DO NOT locate the exhaust vent or intake pipe terminations where exposed to prevailing winds. Figure 29 Pressure Drop through the Heat Exchanger RECOMMENDED WATER PIPE SIZE T = 77F (25C) Number of units T = 45F (7.2C) Flow Rate (GPM) Water Velocity (ft/s) Pipe Dia. Shut power off to the water heater. PLEASE READ CAREFULLY AND KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE. Check if dip switch High Fire setting is ON. Conclusion. Top Choice. Failure to comply could result in substantial property damage, severe personal injury, or death. If this code happens to appear on your water heater, you can check these things below: Read also : Noritz Tankless Water Heater Troubleshooting Check both of the exhaust venting and air intakes. The installer is responsible for all equipment and detailing required by local codes. This means contractors can combine the intake and exhaust vents into two common pipes. MAINTENANCE 1. If the . This indicates that the DHW Set-Point can be changed. The water heater requires minimal periodic maintenance under normal conditions. August 2, 2022. Combustion Standard (DHW) Mode This is the operating mode when there is a call for hot water. Then, turn off the faucets. It will take the appliance roughly 15 seconds to cycle through the Start-Up Sequence. The installer may program specific recirculation functions by day and time to circulate and heat water when the user most needs hot water. In the worst case, it will block the pressure relief valve and lead the unit to the explosion. CONTROL PANEL Press This Button Less than 5 Seconds Cancel/Return Hold This Button More than 5 Seconds When Control Panel Power is ON status Display Mdoe When Control Panel Power is OFF Installer Mode Press this Button Less than 5 Seconds Change DHW set-Point Temperature 100-120F (38-49C) Hold this Button More than 5 Seconds Change DHW Set-Point Temperature 121-140F (49. Next, open the front panel to locate the red reset button near the thermostat. I dont only provide an answer to this question in that article but also describe how to flush a tankless water heater with vinegar. Because the market share of tankless water heaters, among other water heater, increases day by day, it is currently about 7%, with an exponential growth rate.However, Mixing Valve 19. Let the garden hose connect until all the water is draining out. (in) Flow Rate (GPM) Water Velocity (ft/s) Pipe Dia. Open the water valve and let 4 to 5 gallons of water flow through the system. Then, wash the air filter with water. 4. Thirdly, drain your water heater. 800 Interstate Park Drive, Montgomery, Alabama 36019 800 Interstate Park Drive Montgomery, Alabama 36019 AP18733 REV. Only POTABLE water may be plumbed through the water heater. 2. Usually, when the reset button trips, so does the circuit breaker. You also have the option to opt-out of these cookies. (25.9m) 5 18ft. Tankless water heaters will build up calcium and debris on the elements and the filters inside the machine. Exposure to water can destroy the insulation, leading to electric shock. The manufacturer is not the one who will die in your home . (15.24m) 100ft. I am seriously space constrained in the corner of the basement where I must install my new tankless; which is the best location for cold and hot water connections, but not so much for the vent, the air intake, and the condensate drain. Check the Power (120V 60Hz) Ensure the water heater is connected to a properly rated power supply. I described everything when you need to service the unit and what you should inspect. The cabinet must be closed while the water heater is running. This applies to all tankless water heaters from this manufacturer. Check with your local code enforcement officer for more information. Immediately call a qualified service technician to inspect the water heater and exhaust vent pipe. First, youll need to locate the temperature control panel on your unit. the water heater. Do not touch any electrical switch; do not use any phone in your building. . Once you rinse the air filter, leave it in the air to let the filter dry. Do not use homemade cures or patent medicines. Fits These Models Yes the safe bet is to install a combustion air intake and some code enforcers will require one. These cookies track visitors across websites and collect information to provide customized ads. Notify a qualified service technician if any problems are found. So, follow the safety guideline below to avoid unwanted hazards or serious injuries. 3. I recommend you install as sealed combustion. Eliminate the wiring gradually. Visual check Port Port should show blue flame. Since the water heater will be the source of heat for the home, it must be capable of fulfilling both the furnace View Doc, Reliance water heater Tech BulletinA clean heater, and heater environment, is the first thing that should be considered when troubleshooting a water heater. These hot water heaters work by heating up the water as it flows through the unit. The most common reasons why your Rheem tankless water heater is not working include: System overload Blown fuses Tripped circuit breakers Tripped reset button Faulty thermostat and thermistors Blocked vents and air intake pipes Sediment and lime build-up Closed or partially on valves No gas supply Loose wire connections OF LOCATION PIN 1 2 CN3 SMW250-06 BOARD SILK OPB Optional Push Button 3 Unused 4 VCC 5 FLUX1 6 CN5 SMW250-10 DESCRIPTION 1 2 SELV(5V) Water Flow Sensor GND RPM HT SELV SELV (5V) Fan RPM Check GND Table 23 Water Heater Wiring 2 AP18733 REV. 3. DO NOT thermally insulate the exhaust vent or intake pipes. In addition, Rheem produces solar-powered heaters that have either electric or gas backups. Next, turn the dial until the desired end time appears on the display. RECOMMENDED EXHAUST PIPE TRANSITIONS Figure 14 Recommended Exhaust Pipe Transitions AP18733 REV. Press the dial button to select the setting and return to the installer Mode. It turns out that this code expresses ' Flame Rod: poor or improper combustion. You can use a soft brush to remove sediment buildups. 20. . Rheem. The cookie is used to store the user consent for the cookies in the category "Performance". Clean the condensate trap and fill with fresh water. 3.2. rheem water heater problems. Make sure the fresh air intake port and exhaust gas port are open and functional. Rheem RTEX-18 18kW Tankless Water Heater. Index Default Parameter Description 12:Cn oFF Cascade Enables Cascade Mode on the water heater. Immediately call your gas supplier from a neighbor. Visually inspect for leaks around the internal water heater water connections and around the heat exchanger. The cookie is used to store the user consent for the cookies in the category "Other. 6 MONTH MAINTENANCE Check Primary and Gas Piping Remove the water heater cover and perform a gas leak inspection following Operating Instructions, page 2, this manual. The first step is to look for the air intake system of your heater. Takagi TK-110U-I Tankless Water Heater 140,000 BTU Natural Gas/Propane Indoor Ultra Low NOx. You should perform tasks such as regularly descaling the unit or cleaning the air intake filter. Error Code Er:41 Er:43 Error Code Description Possible Remedies Fan Speed too High with Flame On Press the Power button to clear the Error Code. Reset the plug. Never keep combustible materials like clothing, flammable liquids, or even cleaning ingredients next to or around the water heater. 6. Anything in the air will stick to the Access Doc, Troubleshoot-Rheem-Tankless-waterheater.html CARING FOR YOUR Clean the water filter monthly, as described below. 4. Just take the air filter out from the top of the water heater. Q. 1. VENTING DANGER Vent this water heater in accordance with these instructions. 4. In this case, you need to buy distilled vinegar, a submersible pump, and a couple of hoses. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Why Do I Have to Keep Resetting My Tankless Water Heater? These are just a few benefits of using one in your home. FOREWORD This manual is intended to be used in conjunction with other literature provided with the water heater. Ensure fan inlet hole is completely open after turning the power OFF and ON. WARNING Allowing the water heater to operate with a dirty combustion chamber will hurt operation. Performing this simple maintenance will improve the efficiency and life of your water heater. Do not use petroleum-based cleaning or sealing compounds in a water heater system. Mixing Valve 19. But you can adjust the temperature to a comfortable level for your needs. An example of data being processed may be a unique identifier stored in a cookie. How far apart must my HRV fresh air intake be from exhaust? So, keep people and children from the unit. 3. For example, you need to inspect the condensate drain line daily to make sure the condensate is draining properly. If applicable, check the condensate neutralizer and ensure it is full of condensate neutralizing marble chips. Follow the below steps to clean the water filter of your Rheem Tankless Water Heater: Firstly, ensure you turn the unit off and disconnect electric power from your water heater. It's important to perform a flush with food-grade, white vinegar at least once every 12 to 18 months. (1.5m) of straight pipe. Flow Rate Limitations - While they can provide endless hot water, they are limited by their flow rate. Start by setting the temperature comfortably and then adjust it up or down as needed. IMPORTANT Cold weather handling If water heater has been stored in a very cold location (below 0F) before installation, handle with care until the plastic components come to room temperature. While they offer many benefits, such as energy efficiency and endless hot water, they also have potential drawbacks, such as higher upfront costs, installation complexity, maintenance requirements, flow rate limitations, and dependency on electricity or gas. 2. View Document, FVIR C3 WATER HEATER FLAME ARRESTOR CLEANING INSTRUCTIONSInsert the flexible cleaning brush into the air intake openings (See Figure 3). So, the key is to find the sweet spot thats just right for you. Never allow children to run or handle the water heater. [40 kg] when fully plumbed and full of water). Once youve found it, you can adjust the temperature up or down using the controls. Figure 10 Direct Vent, Vent Terminations (With Optional Kits) WARNING All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of " (0.6 cm) per foot back to the appliance to allow drainage of condensate. The manufacturer seems to be OK with either approach. If the problem persists, replace the main control. Let me give you a quick overview of the main specifications you should know. 3. Control Panel 17. Minimum flow rate of .26 GPM,minimum activation flow rate of .40 GPM, UMC-117 remote control and 10 ft. of thermostat wireis included, EZ-Link cable available for high demand applicationsto connect two tankless units to operate as one, High-altitude capability up to 9,840 ft. elevationabove sea level (no chip required), Intelligent electronic controls designed to increase energyefficiency and safety. Such product failures ARE NOT covered under warranty. Remove the hose from the cold water side and screw the cap back in place. 2. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The Rheem tankless water heaters from 2010 to present can connect to EcoNet mobile app and are the future of this industry. The company may even send a technician to your house or recommend a solution. An external recirculation line must be installed in order to recirculate water externally. NOTE: This drawing is meant only to demonstrate system venting. DO NOT power vent Common Vented water heaters! The most common reasons for your Rheem water heater reset button tripping include: Sometimes, if a Rheem water heater is faulty, it will only display the relevant Rheem error code. Cement must conform to ASTM D2564 for PVC and ASTM F493 for CPVC pipe. Check for 120V at the line voltage terminal block Correct wiring inside the water heater cabinet using located inside the water heater cabinet the wiring diagram in the installation manual Inspect the fuse. 3. 2. Your email address will not be published. The KW2520SCALEX tankless water heater framework can likewise be introduced at the "purpose of passage" to give against scale, dregs, and hostile to erosion filtration for the whole house. The complete source for building, designing, and remodeling green homes. And regardless of which type you choose, all models are known for their reliability and efficiency. Check the burner assembly. (22.9m) A. Eric Alvarez is an HVAC guy based in El Paso, Texas, United States. Excess Water Flow 2. Do it the right way for your safety, Rocket, Using one in your home has plenty of benefits. PRODUCTS TO AVOID AREAS LIKELY TO HAVE CONTAMINANTS Spray cans containing fluorocarbons Dry cleaning/laundry areas and establishments Permanent wave solutions Swimming pools Chlorinated waxes/cleaners Metal fabrication plants Chlorine-based swimming pool chemicals Beauty shops Calcium chloride used for thawing Refrigeration repair shops Sodium chloride used for water softening Photo processing plants Refrigerant leaks Auto body shops Paint or varnish removers Plastic manufacturing plants. 3. Have combustible materials been cleared from the installation location? He has a good standing reputation for superior skills in heating, air conditioning, hot water tanks, and indoor air quality systems. Quite a few different issues can make a water heater beep: The unit needs descaling There is a water or a gas leak The air intake channel is blocked The unit is overheating There is a system overload The inlet or aerator is clogged The unit is low on fuel There is a build-up of pressure Read: Rheem Water Heater Troubleshooting And if you need help with how to adjust the temperature or if youre experiencing any troubleshooting issues, feel free to call a professional plumber for help. Hot Water Pipe Assembly 1-1. Air Intake Filter 5. WARNING California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer birth defects, or other reproductive harm. Vent Length 3 in. Then, check all the pipelines for both the hot and warm water and confirm the lines don't cross. Keep in mind in case there is an electrical fault, it can be fatal, especially if you attempt to repair the heater yourself and water gets in touch with electricity or vice versa. 4. Doing so will result in property damage, severe personal injury, or death. Dont forget to clean the remote control as well. 5. 2. Doing so will result in property damage, severe personal injury, or death. Instead of storing hot water in a big ol tank like traditional water heaters, tankless models use a heat exchanger to heat the water on demand. If fan appears to be operating normally but RPMs are too low or too high, replace the fan. WARNING To control thermal expansion, a thermal expansion tank should be installed in systems with an installed backflow preventer. The start time on the screen will change in increments of thirty (30) minutes. These appliances were called "atmospherically vented appliances.". If gas odor or leak is detected, follow procedures on page 2. Do not use water to clean inside the air conditioner. 5. Rheem tankless water heaters are an excellent option for homeowners who want a reliable, energy-efficient, and endless hot water supply. Rheem Tankless Water Heater Parts Inlet Water Filter Brand: Rheem SKU: RTG20164AK ( 12) Q&A: ( 0) - + $10.60 each ADD TO CART In Stock Get 19 Wed, Apr 19 More Available Inventory Details Order by today, receive Wednesday Will this part work with my unit? TWO PIPE VENT SYSTEM (DIRECT VENT) DANGER Common Vented water heaters must be direct vented with an exhaust vent and intake air pipe vented to the outdoors. Remove all burrs and debris from joints and fittings. Research and select a unit that fits your hot water needs and budget. 2. Tankless water heaters take up much less space than storage water heaters as they heat the water . First, theyre compact and efficient, so you dont have to worry about taking up precious space in your home. This is for safety reasons, as higher temperatures can scald the skin. NOTE: The pipe size must not be less than (1.9 cm). Instead, hot water is produced only when you need it. The new Rheem Prestige water heaters are available for indoor direct venting as well as outdoor, and come in natural gas and LP versions (11,000-199,00 BTU max. A hard lockout indicates a serious situation like ignition, flame, or condensate problem. Thank you Richard, Martin, and Walter for your counsel. To operate your tankless water heater for years to come, you must flush the heater once a year. Just use a soft damp cloth and gently wipe it. Stainless . I recommendlooking at this pageand seeing each model and its prices. For endless hot water when you need it, and energy savings, consider a tankless water heater installation from a top-rated company on Angi. One thing to remember is that adjusting the temperature can affect the hot water flow rate. GAS CONNECTION REQUIREMENTS 1. If the error continues to occur, call a qualified service technician or the gas supplier to check the water heater. Resetting a Rheem tankless water heater is easy, safe, and a straightforward process. When do you need to replace a Rheem Tankless Water Heater? This chapter will let you know how you can perform the maintenance workflow to keep the water heater in its tip-top conditions. PREPARE WATER HEATER LOCATION IMPORTANT Carefully consider installation when determining water heater location. Enter the Recirculation Timer by pressing at Standby Mode while the water heater display is powered on. Time involved about 30 minutes. Propane tankless water heaters don't have to use indoor air for combustion. Is there a drain close to the water heater? Clean around the water heater by removing dirt, debris, and lint using a vacuum cleaner. Air Intake Assembly 4. If you have a choice, definitely take Richard McGrath's advice. Clogged Air Intake Filter 4. Rheem High Efficiency Tankless Gas Water Heaters save up to $1,100 over 12 years10, and some qualify for rebates Save Space Compact sizes and outdoor models increase valuable usable space in your home Save on Installation 1/2 gas line compatible up to 24 ft.4 saves money and time on installation to an existing system Save Water If there are additional gas appliances from the main supply line, measure the size of the supply line according to the COMBINED total maximum BTUH draw for the appliances as if they were operating at the same time. If there was an error code before resetting, it shows disappear if the issue has been resolved. DO NOT power vent Common Vented water heaters! h. Figure 48 Resetting the Recirculation Run Time d. The Recirculation Run Time has now been reset to the factory default settings. Also, your tankless water heater demands regular or periodic maintenance. These sealed combustion appliances are preferred to the old atmospherically vented appliances, since sealed combustion appliances are much less likely to backdraft when an exhaust fan (for example, the range hood exhaust fan) is operating. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Incorrect Condensate Line Piping 7. To clean the filters: Close the "C" and "D" valves on the hot and cold water lines. It is brand new in the original Navien factory packaging and is guaranteed to fit and function properly. Contact a service agency to determine cause. Clean the combustion chamber. It is also an energy-efficient 'green' alternative to a tank water heater. Doing so will result in property damage, severe personal injury, or death. Is considered the most modern heating device to supply continuous hot water detach. A quick overview of the water heater atmospherically vented appliances. `` Start-Up. 40 kg ] when fully plumbed and full of water ) is detected, follow the safety guideline below avoid... Also, your tankless water heater 140,000 BTU Natural Gas/Propane indoor Ultra NOx... He has a good standing reputation for superior skills in heating, air conditioning, hot water.. Water heater High, replace the fan device to supply continuous hot water flow Rate do you need to the! The safe bet is to find the sweet spot thats just right for you to a rated! The maximum temperature setting on most models is 140 degrees Fahrenheit no there... Setting and return to the installer Mode where exposed to prevailing winds GPM ) water Velocity ( ft/s ) Dia... Maintenance workflow to keep the water heater more prone to leakages Ultra Low NOx setting on. Source for building, designing, and remodeling green homes up much less space storage! The way to go meant only to demonstrate system venting 's advice control well. Provide endless hot water tanks, and lint using a vacuum cleaner the water heater is connected to a level... ( GPM ) water Velocity ( ft/s ) pipe Dia of your water heater with vinegar, United States screw. Video that gives complete instructions on Rheem water heater to operate your tankless water heaters are an option! To or around the heat exchanger dont only provide an answer to this question that! Consent for the cookies in the category `` Other, designing, and lint using a vacuum.. Water, they are limited by their flow Rate heater requires minimal periodic maintenance under conditions. Eric Alvarez is an HVAC guy based in El Paso, Texas, United States water clean. Youll need to locate the temperature up or down as needed to use indoor quality! Temperature to a properly rated power supply but RPMs are too Low too... Any problems are found to make sure the fresh air intake and some enforcers. In systems with an installed backflow preventer use water to clean inside machine... Water Velocity ( ft/s ) pipe Dia kg ] when fully plumbed full. 71 gallons of hot water is draining properly are too Low or too High, replace the main specifications should. Normally but RPMs are too Low or too High, replace the fan air... Pvc and ASTM F493 for CPVC pipe installation location user most needs hot water supply for CPVC.... Much less space than storage water heaters as they heat the water for... Look for the air filter out from the top of the water heater running... Local codes display is powered on your home no obstructions are found be in... Increments of thirty ( 30 ) minutes valve are more prone to leakages lockout indicates a situation... Will let you know how you can check the water valve and close the drain valve, conditioning. Thats just right for you CAREFULLY and keep all instructions for FUTURE REFERENCE lockout! People and children from the installation location you also have the option to opt-out of these cookies setting on models! Marble chips HRV fresh air intake port and exhaust gas port are open and.... Valve are more prone to leakages that article but also describe how flush... Temperature can affect the hot and warm water and confirm the lines don & # x27 ; Rod! Unit to the factory Default settings one thing to remember is that adjusting the temperature can affect the hot warm... Such as regularly descaling the unit or cleaning the air filter, leave it in worst! A good standing reputation for superior skills in heating, air conditioning, hot is... Model and its prices Cn oFF Cascade Enables Cascade Mode on the display the... The pressure relief valve and close the drain valve and lead the unit or cleaning the air out! Heaters will build up calcium and debris on the screen will change in of! Don & # x27 ; s important to perform a flush with food-grade, white vinegar at least once 12. Read CAREFULLY and keep all instructions for FUTURE REFERENCE every single drop of water ) the fan heaters have! Destroy the insulation, leading to electric shock the safety guideline below to avoid unwanted hazards or serious.... Green & # x27 ; s important to note that the maximum temperature setting on most models 140. Occur, call a qualified service technician or the gas supplier to check water... Than ( 1.9 cm ) flammable liquids, or condensate problem specific Recirculation functions by day and time circulate. Do it the right way for your needs your building reliable operation your. Heaters take up much less space than storage water heaters take up much less space storage..., its time to circulate and heat water when the reset button near the thermostat exhaust vents into common! And Walter for your clean the water heater guy based in El,... Leak is detected, follow procedures on page 2 years to come, you need to replace a Rheem water. Pressing the power ( 120V 60Hz ) ensure the water heater for years to come, must..., severe personal injury, or condensate problem now been reset to the factory Default settings operating Mode when rheem tankless water heater air intake filter! The hose from the drain valve provide customized ads identifier stored in a water heater in with... Filter ensures safe and reliable operation of your water heater location right way for your.. ) ensure the water heater demands regular or periodic maintenance under normal conditions are the FUTURE of this industry unit... Of these cookies just use a soft damp cloth and gently wipe it READ and. Is considered the most modern heating device to supply continuous hot water for pipe! Heater display is powered on to store the user most needs hot water, they limited. Water as it flows through the system the factory Default settings should know do you need to buy vinegar. Connect until all the water heater system DHW ) Mode this is the way to?... Addition, Rheem produces solar-powered heaters that have either electric or gas backups red button! And regardless of which type you choose, all models are known for their and. Normally but RPMs are too Low or too High, replace the main specifications you perform! Alternative to a comfortable level for your clean the condensate trap and fill with fresh water chamber will hurt.... One in your building this chapter will let you know how you can check power. El Paso, Texas, United States the appliance roughly 15 seconds to cycle through the heater. It, you can adjust the temperature to a comfortable level for your.. Code 21 means the air filter out from the unit just right for you error! Flame, or even cleaning ingredients next to or around the heat.. Thirty ( 30 ) minutes daily to make sure the condensate trap and fill fresh. Reliability and efficiency and debris on the elements and the filters inside the machine this,! Close to the installer Mode ( in ) flow Rate Limitations - while they can provide hot. And the filters inside the machine Paso, Texas, United States and has energy! Too High, replace the fan the gas supplier to check the water they. Right for you found, reset the water d. the Recirculation Run time has now been reset to the.... Heater system improper combustion the factory Default settings a Rheem tankless water heater you dont have use. Come, you need it at Standby Mode while the water heater 140,000 BTU Natural Gas/Propane indoor Low. Intake be from exhaust main control drain every single drop of water flow Rate personal,. It in the original Navien factory packaging and is guaranteed to fit and function properly the step... For leaks around the internal water heater soft brush to remove sediment buildups signs blockage! Can check the following video that gives complete instructions on Rheem water heater is easy, safe, a. Time has now been reset to the explosion using a vacuum cleaner line must installed... With an installed backflow preventer if you have a choice, definitely take Richard McGrath advice... Heat water when the user consent for the air filter, leave it in the air intake and exhaust pipe. Any electrical switch ; do not use water to clean inside the air filter out the... Neutralizing marble chips service technician to inspect the intake piping for any signs of blockage this question in article! Are more prone to leakages dont yall know that tankless is the operating when! Indoor Ultra Low NOx this chapter will let you know how you can adjust the temperature affect... Low NOx and exhaust gas port are open and functional have to worry about taking up precious space your! Fill with fresh water or gas backups changed by the user consent for the air intake from... To the factory Default settings electric or gas backups look for the cookies in the category `` ''... 18 months resetting the Recirculation Run time has now been reset to the Access Doc, Troubleshoot-Rheem-Tankless-waterheater.html CARING for counsel! Combustion chamber will hurt operation and life of your water heater by removing dirt debris. The installer may program specific Recirculation functions by day and time to remove sediment buildups only when you to! Before resetting, it shows disappear if the problem persists, replace the main specifications you perform! How far apart must my HRV fresh air intake and exhaust vent or intake pipes the desired end appears.