Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-10-2003, 01:08 PM   #1
1 Rivet Member
 
FC54's Avatar
 
Join Date: Apr 2003
Posts: 9
Question Tankless water heater

Hello, hello,

I'm about to buy a tankless and vent less water heater from excellamerica...
it says on the specs : 1.6 Gallons per minute (45°F temp rise)

Is there someone who already use or install a tankless water heater ?

I would like to know the negative point of it... 'cause I 'm trying to reduce the space and the weight inside my airstream....

And by the way... Have an Happy holyday, and thanks for answering.

Pierre.
__________________

__________________
Carpe Diem
FC54 is offline   Reply With Quote
Old 12-10-2003, 01:29 PM   #2
Rivet Master
 
53flyingcloud's Avatar
 
1984 29' Sovereign
Savannah , Missouri
Join Date: Apr 2002
Posts: 3,458
Images: 17
Blog Entries: 1
Lightbulb Just abit of info

FC54

If I may pass this on..
Before I refurbished my water heater last year, I had also thougth about replacing it with a newer concept.
My requirements were similar to yours, it had to have constant flow water heated on demand, etc.
Let me share with you the benefits of my research.

RV 500

lol, check out their A/S cartoon..

When the time does come to replace the old one, this is the way I'll be going..

ciao
__________________

__________________
WBCCI 5292 AIR 807
NEU #64
New England Unit
53flyingcloud is offline   Reply With Quote
Old 12-10-2003, 01:41 PM   #3
Rivet Master
 
87MH's Avatar
 
1978 31' Sovereign
Texas Airstream Harbor , Zavalla, in the Deep East Texas Piney Woods on Lake Sam Rayburn
Join Date: Jan 2003
Posts: 2,435
Images: 292
FWIW

Most shower heads are designed for 2.5 gpm (in home construction, I know the shower head in the 345 puts out less).

1.6 gpm at only a 45 degress rise might be a bit skinny.

You could always drop the shower head in a 5 gallon bucket, measure th time to fill it, and estimate your real gpm requirement.

I would hope you would be able to at least try one out (rental unit?) prior to purchasing and installing.
__________________
Dennis

"Suck it up, spend the bucks, do it right the first time."

WBCCI # 1113
AirForums #1737

Trailer '78 31' Sovereign

Living Large at an Airstream Park on the Largest Lake Totally Contained in Texas
Texas Airstream Harbor, Inc.
87MH is offline   Reply With Quote
Old 12-10-2003, 02:21 PM   #4
Just a member
 
thenewkid64's Avatar
 
1978 28' Argosy 28
Tampa Bay , Florida
Join Date: Mar 2002
Posts: 4,539
Images: 21
Send a message via AIM to thenewkid64 Send a message via Yahoo to thenewkid64 Send a message via Skype™ to thenewkid64
FWIW2

The big thing for me is being able to use the unit year round. A 45 degree increase in water temp in the winter in many climates means a full hot shower will be 78 degree water at the lowest, or up to 85-88 if you are lucky. Too cold for me and I like cool showers. The other issue is actual germ killing power of the minimally heated water when it comes to washing dishes, etc.

Also consider the operating needs of the heater and the water source that will be fed thru it. With a tanked heater there is the ability to flush out sediments and scale. I do not know if that is possible here.

Is this the unit you are considering? http://www.cetsolar.com/38b.htm

The base model can give a 90 degree rise in water temps if the flow is .6 GPM Means a trickle shower, or navy shower to get the hottest water, but it would work. I would test the flow rate on the shower head or look to get a really low flow one so the GPM is in the .8 GPM range. But that is just me.

The thing to remember when looking at a shower head is that with the in line restrictor in place the unit will comply with the 2.5 GPM federal law at 80 PSI. You will be a 35-40 PSI so you would have 1.25 GPM flow.
__________________
Brett G
WBCCI #5501 AIR # 49
-------------------------
1978 Argosy 28 foot Motorhome

Wise men talk because they have something to say; fools, because they have to say something. -- Plato


thenewkid64 is offline   Reply With Quote
Old 12-10-2003, 02:32 PM   #5
1 Rivet Member
 
FC54's Avatar
 
Join Date: Apr 2003
Posts: 9
Arrow more info

Flying cloud 53,

Did you give up on a tankless solution ? what kind of water heater do you have ?

lol about the airstream cartoon....


the model I plan to use would be this one :

http://www.excelamerica.com/calentadores_eng.htm

may be I should get back to a atwood 6 gal Lp and electric ?

thanks again...

pierre.
__________________
Carpe Diem
FC54 is offline   Reply With Quote
Old 12-10-2003, 04:04 PM   #6
Rivet Master
 
53flyingcloud's Avatar
 
1984 29' Sovereign
Savannah , Missouri
Join Date: Apr 2002
Posts: 3,458
Images: 17
Blog Entries: 1
Thumbs up Intersting info.

pierre
Thanks, that was very intersting`~..To answer your question, No..I haven't given up on the RV500..But, for now, as long as the original unit works..I'll use it..I know it's just a question of time. When that happens, I'll be giving them a call..I'm quite impressed with their product and, the way they handle all the question over the fone..
Price wise, it's more expensive but..I think you'll agree that the advantages outweighs the cost factor.

ciao`
53FC
Attached Images
 
__________________
WBCCI 5292 AIR 807
NEU #64
New England Unit
53flyingcloud is offline   Reply With Quote
Old 12-10-2003, 04:14 PM   #7
2 Rivet Member
 
Join Date: Sep 2003
Posts: 65
53FlyingCloud,

When my water heater bit the dust, I was going to get the RV500. P.O. did not believe in sacraficial anode. However the RV500 will not fit in the same space as a six gallon water heater. It takes the same space as a ten gallon water heater.

I would have loved to have installed one.
__________________
et
diesel is offline   Reply With Quote
Old 12-10-2003, 11:10 PM   #8
Rivet Master
 
53flyingcloud's Avatar
 
1984 29' Sovereign
Savannah , Missouri
Join Date: Apr 2002
Posts: 3,458
Images: 17
Blog Entries: 1
Red face You're right~

Diesel...
I just saw that~How did I miss that simple fact? lol
Quote:
In almost all instances it will. The RV-500 mounting flange is designed to perfectly replace a common ten gallon tank heater. To replace a six gallon heater, a few inches must be added to the vertical dimension. This can be cut up or down.
Hmmm, I need to get back with them with a few more "pointed" question..
Thanks..
ciao
__________________
WBCCI 5292 AIR 807
NEU #64
New England Unit
53flyingcloud is offline   Reply With Quote
Old 12-11-2003, 08:40 AM   #9
Rivet Master
 
Pahaska's Avatar
 
2014 Interstate Ext. Coach
Hays County , Texas
Join Date: Jun 2002
Posts: 5,822
Images: 3
Sorry

I guess installing one of these would be considered a "tankless task"!
__________________
John W. Irwin
2014.5 Touring Coach, "Sabre-Dog IV"
WBCCI #9632
Pahaska is offline   Reply With Quote
Old 12-11-2003, 08:49 AM   #10
Rivet Master
 
Pahaska's Avatar
 
2014 Interstate Ext. Coach
Hays County , Texas
Join Date: Jun 2002
Posts: 5,822
Images: 3
On a more serious note

Some years ago, I bought a tankless heater. When I added a laundry room on to my house at the far end from the gas water heater, I installed the tankless heater to service the washing machine. I found that it took about 15 minutes to fill the washer to get water hot enough.

I then bought a second tankless heater to put in series with the first. I ended up selling the house before I installed it.

I later gave the second heater to a friend who was building a straw-bale house. She put a solar collector on the roof and the tankless heater in series. With the pre-warmed water, she was very pleased with the performance.

My opinion is that for most of the year you will not get a decent shower from one of these heaters unless the water is pre-warmed. Even getting a good flow to do such things as rinse dishes with good hot water will be a problem.
__________________
John W. Irwin
2014.5 Touring Coach, "Sabre-Dog IV"
WBCCI #9632
Pahaska is offline   Reply With Quote
Old 12-11-2003, 09:11 AM   #11
Rivet Master
 
RoadKingMoe's Avatar
 
2001 34' Limited
The State of , Ohio
Join Date: Sep 2002
Posts: 1,605
Images: 23
My brother works in energy managment... the companies that go out to homes and businesses, do thermal studies, design energy plans, etc. They don't recommend tankless water heaters for Americans anymore because they've seen too many people unsatisfied with the lower temperatures at higher flow rates.

I'd stick to the 6 gallon gas/electric Atwood. We don't fire ours up until about 1/2 hour before we wash dishes and shower, and shut it off before the last shower (mine ), so it isn't heating water that will be left there to cool down. Unless the temperature is going to drop below freezing, when we leave it running because it's DSI. Those with traditional pilot lights seem to be able to get by without freezing by just running the pilot light.
__________________
Maurice
RoadKingMoe is offline   Reply With Quote
Old 12-11-2003, 09:51 PM   #12
Site Team
 
, Minnesota
Join Date: Aug 2003
Posts: 6,940
Images: 59
Water heater

I think the advantage of the tankless water heater is that you can take as long a shower as you like without running out of hot water half way through. The 45° temp rise is not really a limit, the heater will heat to whatever temperature is set, but at a lower flow rate.
Question: does it make sense to put in a small (maybe 1 gallon) heater just to handle hand-washing, and a tankless heater to handle showers and laundry?
__________________
markdoane is offline   Reply With Quote
Old 12-11-2003, 11:22 PM   #13
4 Rivet Member
 
Cedars's Avatar
 
1983 31' Excella
Waterloo , Iowa
Join Date: Aug 2003
Posts: 355
Markdoann-
Doesn't seem to make sense to me to install TWO h2o heaters..... Do what I do for washing up, dishes, etc..... I use my electric six quart roaster..... fill it with cold water, let it heat, use that for dishes and washing. You'd be amazed how far six quarts of water will go! We only light the big heater for showers! And those are rare..... we're ummm, big people and so prefer to use truck stops or other facilities for showering.

Elizabeth in Iowa
__________________
The carpeting is gone! The carpeting is gone! Long live the cork floor!
Cedars is offline   Reply With Quote
Old 12-11-2003, 11:35 PM   #14
Rivet Master
 
53flyingcloud's Avatar
 
1984 29' Sovereign
Savannah , Missouri
Join Date: Apr 2002
Posts: 3,458
Images: 17
Blog Entries: 1
Talking Not ever...

John,
Quote:
I guess installing one of these would be considered a "tankless task"!
lmao, that's funny...
It's interesting to read the pros and cons, all of which are valid points.
One of the biggest drawbacks would be the extra cost, then the "modification" to the current opening. (As I see it.)
As markdoane pointed out,
Quote:
I think the advantage of the tankless water heater is that you can take as long a shower as you like without running out of hot water half way through.
This would be the biggest advantage and, one that would make for a happy camping family`.
Markdoane, your question about having a small one just for washing your hands, etc makes more sense as I'm incline to wanting the outside of my unit to be kept as it is.
Has anyone heard/seen one of these water heater as an installed unit in a motorhome?
RoadKingMoe I was under the impression that these water heaters had an adjustable water temp range..makes sense that they would. Again, back to the books on spec.
The whole point of this is about choices and, being able to make the right decision when it comes time to replace a faulty unit.

ciao
__________________

__________________
WBCCI 5292 AIR 807
NEU #64
New England Unit
53flyingcloud is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:31 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.