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you need to flush out the rinnai. to do this you will need 4 gallons of white viniger & a circulating pump. #1 disconnect the power. #2 close both incoming & outgoing water valves under the unit. #3 conect a drain hose to the out going flush valve ( flush valves are under the unit & have brass caps) #4 connect pump outlet hose to ingoing flush valve. #5 put pump incoming hose & drain hose from outgoing flush valve in a 5 gallon bucket. #6 pour 4 gallons of vinager into the bucket. #7 open both flush valves. #8 turn on the circulating pump & let viniger pump in the incoming flush valve through the rinnai & out the outgoing flush valve back into the bucket for 45 min. #9 disconct pump from incoming side & close incoming flush valve.( don,t close outgoing vaves at this time) #10 put out going hose in empty bucket. #11 open incoming water to flush viniger out of unit. # 12 disconct outgoing hose , close outgoing flush valve & open outgoing water valve. #13 clean filter & turn on power.
Found this on this same site...Please let us know is it works (I'd like to know since I'm considering a pressure-assisted toilet).
posted on Apr 21, 2009
Asker's Rating nanotick Rank: Apprentice Rating: 0%, 0 votes
This type of flush system can be re presurised quickly by holding down the flush handle for about good 2 minutes, then release , wait for the tank to be refilled with water. Now you can flush away your inner rotting mess down tube good-by...