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Old 11-16-2014, 08:57 AM   #1
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Pressure in hot water tank

On a new flagstaff tt I pulled the drain plug on the hot water tank to start winterizing, after about five minutes I experienced an explosion of sorts that resembled an air canon. What would cause this pressure build up or what could have cause this to happen? I have drained systems many times over the years and have never experienced this.

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Old 11-16-2014, 08:59 AM   #2
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Are you still plug in to shore power and electric element still on in water heater?

2011 Rockwood 8319SS with ProPride 3P hitch/GoodYear Marathons/TST TPMS 507
2008 F250 Lariat CC SB 6.8L V10 4.10 axle ratio (NITTO TERRA GRAPLER G2 LT275/65R20E)
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Old 11-16-2014, 09:01 AM   #3
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Originally Posted by fonzie View Post
Are you still plug in to shore power and electric element still on in water heater?
X2, it could have been your electric element burning out if you forgot to turn it off.
2011 Flagstaff 831 RLBSS

I’ve lost my scapegoat.
I have nobody to blame but myself.
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hot water, pressure, tank, water, water tank

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