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Old 04-08-2012, 09:16 AM   #1
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Tankless water heater

I have a Girard tankless water heater in our new Sterling 30RL. From the beginning it has been troublesome. I have been in contact with the Girard factory and our Wildcat dealer. We have done everything we to correct the problem we have been told, but it either runs too hot or too cold and a tremendous amount of water is required to stabilize the temp. To make it usable, we run some hot in the bathroom sink while we shower to get a tolerable temp. We have purged all lines, performed the factory recommended bypass on the auto mode, taken out the restrictors in all faucets, and added an accumulator. We are going to replace it with a traditional water heater. Has anyone done this yet and what model is recommended? Is there any help available under warrantee to make this right? We love the camper, but we have now resorted to going to the shower house until we can get it fixed.

Johnv
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Old 04-08-2012, 09:21 AM   #2
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Interesting.
We all learned something new recently for a water temperature issue.

The solution apparently was a shower head problem (in the post it was an inside shower head but yours could be an outside one).

Apparently if the hot and cold valves are left open and the shower head button is closed; hot and cold water move back and forth through the valves and water temperature can vary wildly.

Something to check.
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Old 04-08-2012, 09:21 AM   #3
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theres been other posts with units having trouble with there tankless heater .
I would go with the 10 gallon hwh I don't know if the brand really matters but definitely do the 10 gallon .
thats to bad they cant get these tankless heaters to work right .
actually they need a plumbing expert to figure it out.
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Old 04-08-2012, 09:35 AM   #4
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Wildcat has had enough complaints about the tankless water heaters that they should offer a free replacement of a 10 gallon water heater to owners.

For a short time the tankless water heater was standard equipment and the 10 gallon water heater was an option. Because of complaints from dealerships and users it is now the reverse. The tankless water heater was a good idea on paper, but not practical for most RV'ers.
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Old 04-08-2012, 09:55 AM   #5
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I think with an experienced plumber versed in tank less heaters they should be able to fix the problem/s
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Old 04-08-2012, 12:55 PM   #6
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One of the inherent problems with the tankless water heater is that you don’t mix the cold water with the hot water to achieve the correct water temperature. You use only the hot faucet for temperature control and the temperature of the water is controlled by the rate of water flow through the heater. The slower the water flow the hotter the water. The system wastes a lot of water. If your shower water is too cold then you slow the water flow to get it warmer, you have to allow sufficient time for the water to travel from the water heater to the faucet after each adjustment to tell if your adjustment was enough. If it’s still too cold you have to make another small adjustment and again wait for the water already in the lines to run through before you know if it’s the temperature you want. Water pressure is a crucial component of this system and it was for this reason that Wildcat quit putting water filters in those trailers.

If you’re boondocking with a tankless water heater installed, you will use up a lot of the water in your fresh water holding tank with just one shower. My wife’s nephew has a Wilcat Sterling model with the tankless water heater and he absolutely hates it. He too is planning on replacing the tankless system.
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Old 04-09-2012, 09:34 PM   #7
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We had a few troubles to work through recently while we were in NM with our tankless. We also had a temp problem where it was either scaulding hot with the hot water completely on, and then, mixing in a little cold water which we know we should not do, but had no choice, made the entire shower water go cold. We switched the water heater from Auto to Low after reading the manual and figuring what the heck. The low setting puts the heater in a lower btu flame so it can't get the water as hot. With a half turn on the hot water faucet we had a great temp in the shower and still had good water pressure thanks to the oxygenics shower head. Might be worth a try to see if that helps you. I to was ready to replace my tankless with a regular heater, but after my wife got sick while we were in NM and took an ~30 minute non stop shower I have a hard time getting rid of it now... Also, the 10 gallon heater dimensions that I found online are too big for the opening so it won't direct fit. Now in a couple of weeks we have to pack in our water on our next trip...certainly going to be a different story and we'll see what we think of it then. This tankless water heater does waste a lot of water compared to the standard water heaters we have had in our previous rigs.

Thankfully this is not a forced option anymore so people can have a choice now. This certainly isn't a green water heater...but the marketers would probably disagree with me.

Bob
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Old 04-10-2012, 05:33 PM   #8
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Quote:
Originally Posted by herk7769
Interesting.
We all learned something new recently for a water temperature issue.

The solution apparently was a shower head problem (in the post it was an inside shower head but yours could be an outside one).

Apparently if the hot and cold valves are left open and the shower head button is closed; hot and cold water move back and forth through the valves and water temperature can vary wildly.

Something to check.
I've never had a problem with this issue yet, but that's very interesting to know. Thanks for the tidbit Herk.
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Old 04-10-2012, 05:54 PM   #9
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Quote:
Originally Posted by Johnv View Post
I have a Girard tankless water heater in our new Sterling 30RL. From the beginning it has been troublesome. I have been in contact with the Girard factory and our Wildcat dealer. We have done everything we to correct the problem we have been told, but it either runs too hot or too cold and a tremendous amount of water is required to stabilize the temp. To make it usable, we run some hot in the bathroom sink while we shower to get a tolerable temp. We have purged all lines, performed the factory recommended bypass on the auto mode, taken out the restrictors in all faucets, and added an accumulator. We are going to replace it with a traditional water heater. Has anyone done this yet and what model is recommended? Is there any help available under warrantee to make this right? We love the camper, but we have now resorted to going to the shower house until we can get it fixed.

Johnv

HI!

I have a 32RL and inside the switch/ control box is a switch for the Girard. If you switch to the other setting then the heater will not get as hot. You will then use less water flow to get a good washing or shower temperature. There is also an adjustment in the heater itself but I would let the dealer adjust that.
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Old 04-11-2012, 01:48 PM   #10
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Just came back from Florida with our new Wildcat and also had to stop using the shower
With the tankless water heater the water is to hot or to cold and the switch did nothing.
Doug
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