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Old 10-26-2004, 04:37 AM   #1
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Tankless water heater

I want a tankless heater in my unit and have looked into the Precision Temp RV 500 but it says that it fits into the space of a 10 gal unit and mine is six gal. I measured the opening and ther is not way it will fit without cutting and I don't want to get into that.

Is there any reason a small household unit like aqua star would not work. It could be mounted just aft of the bath under the twin bed. Gas and venting would be relitavely simple there.

Thanks
David
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Old 10-26-2004, 08:30 AM   #2
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Quote:
Originally Posted by dmadam
I want a tankless heater [edit ....]
Is there any reason a small household unit like aqua star would not work. It could be mounted just aft of the bath under the twin bed. Gas and venting would be relitavely simple there.

Thanks
David
I don't know about other brands, but the smallest gas Aquastar is over 25" tall and requires 12" clearance top and bottom. I don't see that fitting under the bed.

Mark
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Old 10-26-2004, 08:46 AM   #3
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household type needs ac

the problem with the houshold type on demand is that they need a constant source of AC to run if they are sealed combustion and if your going to be putting it inside your bedroom then it should be or you may wake up dead. there is a company that makes an external unit might look like hell but it would fit anywhere. (rinnai) do a google search on on demand water heaters if i remember there is another company that has one that uses d batteries for the electronic ignitor. can't remember anything else bout it though.
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Old 10-26-2004, 08:54 AM   #4
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I believe the RV-500 is the only tankless heater approved and listed for RV use.
....for what its worth......
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Old 10-26-2004, 10:21 AM   #5
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Needing to replace the water heater (which was missing) in our Safari, I found this interesting and decided to call the company. They tell me that it has an electronic ignitor as opposed to a standing pilot. However, the quoted me a cost of $879. That's twice the cost of an Atwood or Suburban. I have to think long and hard about this one.
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Old 10-26-2004, 10:27 AM   #6
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WOW! I remember checking them about a year ago and I thought the prices, while high, weren't quite THAT high. Thats outrageous.
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Old 10-26-2004, 02:26 PM   #7
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The flue problem is why a home oriented tankless is not so good in an RV.

The precision temp RV500 does not need any additional flue and its exhaust is cooler than the usual RV water heater. It is a very efficient modulated burner tankless heater with 12v controls. But it does need the 10g RV tank water heater size hole.

Note that the RV 500 runs at a BTU/hr rate that about maxes out the typical RV propane line capacity, too. If you try to run a propane based tankless that uses more than 50,000 BTU/hr input you might need to worry about larger gas pipes as well as a kludged flue.
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Old 10-26-2004, 07:53 PM   #8
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House style tankless water heaters ate not a good idea for rv's. The flue temps are too high and the heater size and clearances needed for safety will take up to much room not to mention the high cost of the units.
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Old 10-27-2004, 02:31 PM   #9
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Thumbs up Vent Free Water heater

I recommend an Excel Vent Free instant tankless gas Water Heater, they list for about 499 , but you can buy them on ebay for about 300.

Much better than an Aquastar and it does not need a vent as it has state of the art ODS device (oxygen depletion sensor) kind of like a circuit breaker for gas appliances.


Quote:
Originally Posted by dmadam
I want a tankless heater in my unit and have looked into the Precision Temp RV 500 but it says that it fits into the space of a 10 gal unit and mine is six gal. I measured the opening and ther is not way it will fit without cutting and I don't want to get into that.

Is there any reason a small household unit like aqua star would not work. It could be mounted just aft of the bath under the twin bed. Gas and venting would be relitavely simple there.

Thanks
David
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Old 10-27-2004, 02:33 PM   #10
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Water heater

I recommend an Excel Vent Free instant tankless gas Water Heater, they list for about 499 , but you can buy them on ebay for about 300.

Much better than an Aquastar and it does not need a vent as it has state of the art ODS device (oxygen depletion sensor) kind of like a circuit breaker for gas appliances


Quote:
Originally Posted by Keyholeren
Needing to replace the water heater (which was missing) in our Safari, I found this interesting and decided to call the company. They tell me that it has an electronic ignitor as opposed to a standing pilot. However, the quoted me a cost of $879. That's twice the cost of an Atwood or Suburban. I have to think long and hard about this one.
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Old 10-27-2004, 02:34 PM   #11
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Water heater

I recommend an Excel Vent Free instant tankless gas Water Heater, they list for about 499 , but you can buy them on ebay for about 300.

Much better than an Aquastar and it does not need a vent as it has state of the art ODS device (oxygen depletion sensor) kind of like a circuit breaker for gas appliances


Quote:
Originally Posted by j54mark
I don't know about other brands, but the smallest gas Aquastar is over 25" tall and requires 12" clearance top and bottom. I don't see that fitting under the bed.

Mark
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Old 10-27-2004, 06:51 PM   #12
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Excel heater

Thanks gasman. I had not heard of the Excel units but it looks like the best one for the job.

Thanks
David
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Old 10-27-2004, 07:00 PM   #13
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Do they "Excel" have a website? I couldn't locate one. Thanks.
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Old 10-27-2004, 09:02 PM   #14
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http://www.excelamerica.com/

Excel website.
David
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