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KenTheHandyMan 04-30-2006 09:32 PM

Hot Water Heater
 
I replaced my tank awhile back and put a 50 gal. model in. After everything was hooked up, I opened the water valve and it seemed that the tank filled up almost instantly. As in the sound of the water filling the tank ceased within like 3 seconds. Here's the thing, I have it turned up hot and seem to run out of hot water pretty quick. Like a 15 minute shower and we're all done. This is with nothing else going on. Is that normal? What could be wrong?

Bonus 05-01-2006 12:31 AM

Dunno about the filling real fast part except that after the first few seconds you often can't hear the water going in, and I'm sure you've checked that you've got the supply hooked to the cold side, that leaves power. Have you checked that power is making it to both elements? The symptom is that of a burned out element which doesn't make sense in a new heater. Sorry that I'm not more help, but please let us know when you figure it out for future reference. Good luck Ken.

KenTheHandyMan 05-01-2006 07:12 AM

Well, had it been an electric water heater...that would be a viable option. ;D It's gas though. Hot water alone, at the tap, is unbearably hot.

How about a survey then? How long of a hot shower can you take without running out of hot water?

redline 05-01-2006 09:58 AM

Quote:

Originally Posted by KenTheHandyMan
I replaced my tank awhile back and put a 50 gal. model in. After everything was hooked up, I opened the water valve and it seemed that the tank filled up almost instantly. As in the sound of the water filling the tank ceased within like 3 seconds. Here's the thing, I have it turned up hot and seem to run out of hot water pretty quick. Like a 15 minute shower and we're all done. This is with nothing else going on. Is that normal? What could be wrong?

The reason that the tank filled up fast may be due to the fact that the tank was full of air. Did you open the relief valve as you filled the tank?

What size water lines do you have from the main to the water tank? (1", 3/4",1/2")

what size water lines do you have from the water heater to the shower?

How many gpm is your shower head? (gpm = gallons per minute)

KenTheHandyMan 05-01-2006 10:16 AM

I did not open the relief valve while filling. I wondered about that afterwards though. I figured the air would make it's way out the top eventually anyhow, but it's been a couple of months and no difference.

I have 1" lines mains in, upstairs at the shower they are 1/2". GPM on the shower head...currently unknown. It is a 'rainfall' shower head though. It drops a good bit of water.

MAS2006 05-01-2006 10:51 AM

Water use
 
Typical non-conserving showerheads have flow rates of 5 to 8 gallons per minute, meaning that a typical 5-minute shower would send about 25 - 40 gallons of fresh water down the drain and into the sewer. By contrast, modern low-flow showerheads use only 2.5 gallons per minute, or 12.5 gallons for a 5-minute shower, reducing water demand by at least 50%.

http://www.sahra.arizona.edu/program...oom_shower.htm

With a 50/50 mix of 140/70 degree at 25 gpm(ruffly) hot/cold will give you 20 minutes of 105 degree water, but heater should fire up when it detects temp drop. Check heater temp setting also, (becareful if you have small ones). Trapped air sounds likely with new install. If your incoming water temp is lower your heater recover time will be longer.
:rolleyes:

KenTheHandyMan 05-01-2006 10:58 AM

Thanks for the info. Any way to ensure that I don't have trapped air?

redline 05-01-2006 12:38 PM

Quote:

Originally Posted by KenTheHandyMan
It is a 'rainfall' shower head though. It drops a good bit of water.


The rainfall shower is the cause of hot water loss after 15 minutes of use. The other way to rid this loss of hot water is to install an on demand water heater. Or change the rainfall shower head to a lower consumption shower head.

KenTheHandyMan 05-01-2006 12:58 PM

I was afraid you were going to say that. Oh well, maybe that's why my water bill is $85/month with 7 children and 2 adults huh?

OK, so I'll change it and see what happens. Could there still be air trapped in there after 3 months?

redline 05-04-2006 10:21 AM

I was afraid you were going to say that. Oh well, maybe that's why my water bill is $85/month with 7 children and 2 adults huh? You could just reduce the flow rate by only turning on the the shower at half pressure. That should make the shower last longer with hot water.

OK, so I'll change it and see what happens. Could there still be air trapped in there after 3 monthsI doubt that there is air in the system after three months unless the water lines are reversed at the top of the hot water tank. You could just open the relief valve near the top of the hot tank and see if you have any air coming out.


What size water heater did you have before you changed to this 50 gallon?

KenTheHandyMan 05-04-2006 11:51 PM

40 gal before I believe.

I currently only turn the valves about half way anyhow, cause I know all the water is going down the drain. However, my children are probably another story and I know I have given them proper instruction. I'l have to make that a priority.

I opened the valve twice now. About a month and a half ago, and a couple of weeks ago, just out of curiosity to see if I'd get sputters of air. Only water from what I can tell.

I need to head down there and do some investigating though. I've got a perpetual puddle of water down there but don't see any dripping or anything.

redline 05-05-2006 06:04 PM

Quote:

Originally Posted by KenTheHandyMan
40 gal before I believe.

Why did you change the 40 gallon? Was it leaking or did you need more hot water?

I currently only turn the valves about half way anyhow,With the vlave half way on, does your shower last longer than 15 minutes? cause I know all the water is going down the drain. However, my children are probably another story and I know I have given them proper instruction. I'l have to make that a priority.


Does the rain shower head unthread? If so, then you can make a simple pressure regulator to keep the kids from using more water. Just unthread the rain shower head and then cut a small piece of plastic that is just smaller than the size of the threaded end of the shower head. Cut a hole in the center of the piece of plastic to allow water to flow thru. The size of the hole should be about half the size of the current threaded peice. Insert this plastic into the threaded section of the shower head and then re-install the shower head. This will restrict the flow of the water to the shower head and make the hot water last longer. You can either make the size of the center hole bigger or smaller depending on how much water that you want to go to the shower head.

I opened the valve twice now. About a month and a half ago, and a couple of weeks ago, just out of curiosity to see if I'd get sputters of air. Only water from what I can tell.

I need to head down there and do some investigating though. I've got a perpetual puddle of water down there but don't see any dripping or anything.

Is the water coming from the T/P valve? It should have a pipe that directs it to the floor. Put a can under the pipe to see if water collects in the can. If water collects in the can than it is coming from the T/P valve. If water does not drip into the can than the hot water tank may be leaking at the pipe fittings at the top of the water heater and traveling down inside and then out the bottom.

Teetorbilt 05-05-2006 10:39 PM

7 kids? Holy Moley! Where in IN are you? I have a lot of family there.

KenTheHandyMan 05-05-2006 11:26 PM

Lovely Union City, IN. Right on the border of Ohio and Indiana. Straight East of Indianapolis.

The puddle is about 8 feet from the tank actually. And it isn't a 'can full' it is a small lake actually ;) Thing is, it just sits there and I don't have the time or patience to sit down there and find out what it is. It doens't appear to be going away thoug, so I'm gonna have to spend some time on it in case it is a real problem.

MAS2006 05-08-2006 09:46 PM

Puddle
 
Check when shower is on. Had a leak one time only when shower full on (kids). The connection broke above mixing valve, (pipe not attached to studs at shower head). Seal around tub/shower valve another possibility.


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