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Old 03-19-2018, 11:17 AM   #1
Junior Member
Join Date: Jun 2017
Posts: 3
Tankless water heater

Just returned from maiden trip in our 2011Wildcat 5th wheel 302RLS. I have a question about my tankless water heater. First, after de-winterizing and sanitizing the fresh water tank, i filled it back up. I then went out and flipped switch on outside inside water heater panel. Is there anything else i needed to do before getting hot water? I ask because when turned on hot water. The water heater started making a loud noise when it kicked on. Is it normal to be so loud? I immediately cut it off because wasn't sure i had done everything correctly.

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Old 03-24-2018, 08:50 PM   #2
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Join Date: Mar 2017
Location: San Marcos, TX
Posts: 173
I have 2 tankless, LP, water heaters in my home, but not in my RV. Neither makes any noise except for the LP burner. Is yours electric or gas? I believe electric heaters have expansion noises associated with them, but am not sure. Be a little more explicit with your post.
2017 MS 36RSSB3///2012 F350 KR, LWB, SRW, bilsteins, 1 1/4" anti sway bar, bilstein steering stabilizer, airlift air bags, on board wireless compressor, 295/20 tires at 4080 pounds each, oversized finned aluminum diff and trannie pans, all synthetic fluids, KEM and PIP tunes with SCR4 programming, Edge CTS gauge monitoring.
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