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Old 11-20-2015, 02:37 PM   #1
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Suburban Water Heater Drain

I have a 2016 Classic Super Lite 831RLBSS that I'm trying to winterize. The sales people were no help when it came time for the walk-around concerning much of anything about the travel trailer and the "Owners Manual" was generic at best. Needless to say I plan on posting a lot of questions. First: how do you drain the water heater? I configured the bypass valves in the back of the unit and opened the pressure relief valve. There doesn't seem to be anything on the bottom of the unit except what looks like the (anode?). How can I tell if the water heater is empty? Again, the owners manual was of little help. Click image for larger version

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Old 11-20-2015, 02:43 PM   #2
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Take the anode out.
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Old 11-20-2015, 03:09 PM   #3
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Use 1 1/16 inch socket
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Old 11-20-2015, 03:45 PM   #4
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You have to remove the anode rod.
(See where I marked your photo)
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Old 11-20-2015, 04:57 PM   #5
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Thanks. I removed the rod and the water heater drained.
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Old 11-20-2015, 05:03 PM   #6
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Originally Posted by PCStrope View Post
Thanks. I removed the rod and the water heater drained.
When you reinstall the anode, put no more than 1 1/4 turns of Teflon tape on the threads.
Snug the anode down to where it does not leak. Suburban calls for 7 foot pounds of torque, but not leaking is good. Some leave the anode out until they de-winterize, but I don't recommend that. You want the anode to do what it is supposed to do all of the time.
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Old 11-20-2015, 05:14 PM   #7
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When you reinstall the anode, put no more than 1 1/4 turns of Teflon tape on the threads.
Snug the anode down to where it does not leak. Suburban calls for 7 foot pounds of torque, but not leaking is good. Some leave the anode out until they de-winterize, but I don't recommend that. You want the anode to do what it is supposed to do all of the time.
The only reason I leave the anode in when I winterize is to keep the threads from getting all rusted up. It doesn't really serve much other purpose if there's no water in the tank.
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Old 11-20-2015, 05:30 PM   #8
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The only reason I leave the anode in when I winterize is to keep the threads from getting all rusted up. It doesn't really serve much other purpose if there's no water in the tank.
I agree and will add reinstalling also keeps bugs, spiders or anything else out of an empty tank.
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Old 11-20-2015, 06:02 PM   #9
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The only reason I leave the anode in when I winterize is to keep the threads from getting all rusted up. It doesn't really serve much other purpose if there's no water in the tank.
If the threads are rusting, what do you think is going on in that steel tank.
Just a thought. The anode is sacrificial metal that will corrode (oxidize) first due to the electrolytic action between the steel and the anode as long as there is air and humidity. You ever see a piece of steel laying in a garage out of the rain rust ? That's just me.
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Old 11-21-2015, 01:31 PM   #10
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The only reason I leave the anode in when I winterize is to keep the threads from getting all rusted up. It doesn't really serve much other purpose if there's no water in the tank.
"DITTO"
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