With time, a tankless water heater can collect minerals that can build up on and erode the walls inside the tank's heating chamber. To properly maintain and clean your tankless water heater, you must eliminate and take out the mineral deposits from the tank at least once per year. Continue on reading to find out how you can maintain the tankless water heater to ensure its optimal performance and efficiency. Step 1: Turn off the power supply for the tankless water heater This can be performed by turning off the primary gas or shutting off the circuit breaker for electrical devices. Step 2: Close and turn off the 3 water valves linked to your tankless water heater. This procedure should prevent cold water from flowing into the water heater and prevent hot water from coming out during the cleaning process. The water valves consist of a cold water valve that may be colored blue, a hot water valve that might be colored red, and a third main valve that flows the water into the home. Step 3: Remove the purge port valve caps slowly from the purge valves found on each of the cold and hot water valves. The purge valves have little handles that resemble the letter "T" This procedure is conducted to reduce any pressure that has built inside the valves and could prevent excess hot water from shooting out and coming into contact with your skin. There can be pressure when taking out the purge port valve caps, so it's very important to make sure the hot water valve is completely and accurately shut off for safety purposes. Handle each cap carefully to be sure the runner washer sealing discs stay in place, which are needed for your valves to function correctly. Step 4: Attach your hosing lines to all of the 3 valves. If your manufacturer of your tankless water heater failed to supply you with hosing lines, you can buy them from any store specializing in home repair or water heaters. The hosing lines will have to be long enough to get between the water heater and your bucket. You might need to consult your manual supplied by the tankless water heater's manufacturer or phone the manufacturer directly for exact guidance regarding this process. Sometime, this process may require you to use a sump pump and connect hoses that will discharge and flush water from the tankless water heater using the cold and hot water valves. Step 5: Open the purge port valves by turning them perpendicularly to the position of the cold and hot valves. Step 6: Use 2.5 gallons (9.46 liters) of undiluted white vinegar to clean your tankless water heater all the time instead of chemical substance solutions. Since the tankless water heater is most likely the way to obtain all your drinking water and bathing water, using chemical cleaning solutions may be very harmful to your health. Step 7: Do the flushing and draining procedure by following the instructions given by the manufacturer of the tankless water heater. This process can take up to 45 minutes. Step 8: shut the purge port valves by turning the "T" shaped handles after the flushing procedure has been completed. Step 9: Detach and remove the hosting lines from each water valve. Step 10: Change the purge port valve caps onto the purge valves. Tighten the caps completely and firmly without damaging the rubber sealing discs located inside the caps. Step 11: Check with the manufacturer's manual of your tankless water heater for exact instructions on how to safely re-start your water heater unit. This procedure can require you to rotate and open the cold and hot water valves so they are parallel to the position of the main valve that leads into the house. Step 12: Turn on the hot water tap in your sink carefully to let the air to move through the pipe. Continue to run the water until eventually it runs steadily without air escaping. This procedure could take up to 2 or 3 minutes.
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Park Mechanical Plumbing & Sewer
8324 Luzon Ave.
Sacramento, CA 95828
(916) 231-5681
http://parkmechanical.com/sacramento-plumbing
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