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Old 06-27-2008, 02:07 PM   #1
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Unhappy Hot Water only lasts 2 minutes

I have a Salem 2006 27RBDS which we bought new in aug 07. The hot water only lasts 2-3 minutes. I called dealer he told me expect 5-6 minuutes max of hot water. I am concerned that a new unit would have limited capacity for hot water as we traded in a starcraft hybrid and it never ran out. I am going to call a second dealer to confirm his statement but if anyone has this problem or can confirm that yes 5-6minutes is the average that is great. But I know 2-3 minutes in not long enough.
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Old 06-27-2008, 02:33 PM   #2
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well, this probably wont be much help because i've never timed it,(but i think i'm going to now to just see). But i've never run out of hot water while taking a shower but i do turn off the water and then back on to rinse off.
The only time we did is when we both took back to back showers and didnt give the heater enough time to reheat the water.
That being said though, it is only a 6 gallon water heater and if you have nothing running but the hot water i would say it's flowing at least 1 gallon per minute so i think 5-6 minutes is probably pretty accurate.
Now if your only getting 5 minutes out of it and your taking a shower mixing cold water in with it also then i would have to think you probably should double that time since technically you should only be using half the amount of hot and cold equally.
Probably not much help, but just thought i'd give you my thoughts.
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Old 06-27-2008, 02:58 PM   #3
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Originally Posted by eandsphotography View Post
well, this probably wont be much help because i've never timed it,(but i think i'm going to now to just see). But i've never run out of hot water while taking a shower but i do turn off the water and then back on to rinse off.
The only time we did is when we both took back to back showers and didnt give the heater enough time to reheat the water.
That being said though, it is only a 6 gallon water heater and if you have nothing running but the hot water i would say it's flowing at least 1 gallon per minute so i think 5-6 minutes is probably pretty accurate.
Now if your only getting 5 minutes out of it and your taking a shower mixing cold water in with it also then i would have to think you probably should double that time since technically you should only be using half the amount of hot and cold equally.
Probably not much help, but just thought i'd give you my thoughts.
Very good reply, I agree, the thing is how in the world can anyone take a completely hot shower in an RV, the water is too darn hot!!!!!!
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Old 06-27-2008, 04:45 PM   #4
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Yep, you could boil a weenie with that water!!
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Old 06-28-2008, 08:48 AM   #5
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Well that does help some. So I believe then that there is a problem because that 2-3 minute time frame is while mixing the hot and cold. And I do not expect unlimited hot water but atleast enough to give the baby a bath. Yes it is only 6 gallons storage but what everyone overlooks is the recovery rate. It should keep up with the demand. So if the dealer is just giving me the run around what could be some less obvious reasons for the lowered capacity. I have checked all the obvious ones. If anyone has some other suggestions please send them to me.
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Old 06-28-2008, 10:03 AM   #6
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Yep, you could boil a weenie with that water!!
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Old 06-28-2008, 04:38 PM   #7
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If your hot water heater hot and cold lines were reversed,
ie- the pump/supply line is going into the top of the tank
and the line that goes to your faucets comes out of the bottom-
it would have limited capacity.

The city water/pump supply should go into the bottom fitting.
The hot outlet line should come out of the top of the tank.
The bypass valve in between the two should be shut.
The electric heater can be checked with an clamp on amp meter
or Ohm meter but you need to have a meter and know how to use it.
(Of course if you turn on the electric heater and get hot water
an hour later, that would be a pretty good test of the electric
element also.....)

You can see/hear/feel the gas burner when it's on.

It will never be able to keep up with demand. If you are using water
continuously, it will run out in a few minutes but it should be more than
2.

If you have a dual heat tank with electric and gas and you have both
ON, you can get quick recovery but not continuous.

You have something wrong I think.

My suggestions are above.
Good luck!
KyDan
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Old 06-29-2008, 08:17 PM   #8
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Yes all that was checked as soon as we had this problem(day one). Fortunetaly I am in the HVAC field and was able to determine all that you suggested was operational. But one thing I did not check was the electric side of tank I did not know it was duel fuel.
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Old 06-29-2008, 08:51 PM   #9
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Check your outside shower. If the mixing valve is open and the head stop is closed you get exactly the symptoms you describe. You can also get it if the bypass valve is open or leaking by.

we can take a good shower and not run out of hot water with a 6 gal tank. At 2 gpm you'd have three minutes before you;d be out of hot water. At a 50% mix that'd give you 6 mins. Because the heater heats water before you're completely out of hot the time gets extended some so you actually get a few minutes more, especially at a 50% mix.
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Old 06-29-2008, 09:19 PM   #10
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6 gallion tank and no restrictor in the shower, We get about 6 to 8 minutes nice hot shower then she gets cold VERY fast.

Mike
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