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Old 08-02-2007, 11:10 PM   #1
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flea bay tankless water heaters.

when I was flea bay last i was looking at rv water heaters. I saw this tankeless water heater that runs off of propane and ac also. But here is the oddity its made to mount just behind a shower head and has two heat settings. about $40.00 bucks. the expensive one are about $80.00
but they have a cover and include the shower head as well.

Has anybody ever used one of these good bad ugly. What is your opinions?
Also had the idea putting the cheap unit on the sink too. Since it only runs when its used wondered if they would be more economical.

dale
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Old 08-03-2007, 06:26 AM   #2
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Re: flea bay tankless water heaters.

do you have a link to the auction or site?
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Old 08-03-2007, 10:29 PM   #3
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Re: flea bay tankless water heaters.

i'll look it up on e-bay and link it
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Old 08-03-2007, 10:49 PM   #4
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Re: flea bay tankless water heaters.

# 1 SELLING HEATER ON E-BAY~BEST PRICE EVER~BUY IT NOW Item number: 330152964237



# 1 SELLING HEATER~SAME DAY SHIPPING~SIX YEAR WARRANTY Item number: 330152964317



# 1 SELLING HEATER ON E-BAY~BEST PRICE EVER~BUY IT NOW Item number: 330152964171

well here is the itemm numbers for the tankless water heaters.

When I look at them last week they had lp versions and combo ac/lp versions
the electric is all I see now
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Old 08-05-2007, 11:07 PM   #5
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Re: flea bay tankless water heaters.

I looked at those back when I was still thinking about having a shower inside the bus. I figured they have about a 40 degree rise in temp at full tilt boogie. Obviously you get warmer if you slow the flow down. If my water was in my tank at say 50 degrees that would make for a 90 degree shower which is perfectly acceptable. I think they would REALLY do well as a supplement to a solar batch water heater. Alas...24 amps was more power than I could muster and my shower plans have changed. If someone purchases one I'd sure like to hear how they work.
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Old 08-05-2007, 11:30 PM   #6
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Re: flea bay tankless water heaters.

andrew I think I should get one of the big units and just do the whole bus instead of just a shower head they are about 200.oo or less
there are a ton of brands on the market I have found, the one I am really thinking about is a lp version that way I should always have hot water even if I don't have electricity (ac) that is.
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Old 08-06-2007, 12:19 AM   #7
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Re: flea bay tankless water heaters.

I like propane anyway. It has better recovery times and is far more efficient. One of these days I'll get around to doing my solar batch heater.
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Old 08-06-2007, 11:04 PM   #8
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Re: flea bay tankless water heaters.

expalin to me the solar thing. totally new to me
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Old 08-06-2007, 11:27 PM   #9
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Re: flea bay tankless water heaters.

The batch heaters are stupidly simple. They aren't real reliable since the depend on the weather, but for me it works.

The long and the short of it is that it's just like leaving a garden hose out in the sun all day. You know that nasty rubber tasting blast of 120 degree water you get when you go to get a drink because you're parched? The batch heater I want to use will be the same idea.

Basically I'm just going to build an insulated box about 8 inches tall. The bottom of it will be lined with a thick steel plate as a h*ector on the cover so I can use it to focus some more light on the box.

So...supply line runs up from the bus into a check valve and then the box. It will sit in there until I open the hot water tap at which point it will drain some nice hot water (hopefully) for me while refilling the coil from the supply line. It isn't going to work well on cold days and by 4:00 am it might be a bit cold to take a shower, but the building supplies for the operation are cheap (aside from copper) and it should suit my needs fairly well.

My quick and dirty calculations lead me to believe that 100 feet of 1 inch i.d. tube should get me just over 4 gallons of hot water at any given time. That's comparable to most RV water heaters though the recovery time will of course be less. On the otherhand, it is cheaper by a long shot and can supplement any later heating system I use.
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Old 08-06-2007, 11:32 PM   #10
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Re: flea bay tankless water heaters.

as suppliment just preheating the water before entering the water heater? right
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Old 08-06-2007, 11:34 PM   #11
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Re: flea bay tankless water heaters.

think its something I want to experiment with
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Old 08-07-2007, 12:37 AM   #12
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Re: flea bay tankless water heaters.

Well, it could be a supplement which would REALLY cut down on energy usage, but I'm fully convinced that during the summer months it would provide enough heat on its own. On a hot day your car can get to 150 degrees. I think that a device that is DESIGNED to get hot in the sun could hit 150 degrees easily as well. Now assuming you used proper materials with low thermal coefficients it could heat water from say 60 degrees in the tank to 100 degrees at the tap relatively easily. You're not going to get hot, steamy showers, but you aren't going to be checking around for appendages that seem to have shrunken up and disappeared afterwards either.

Again...it's all just theory. That's the beauty of this busing hobby. You are free to do whatever you want whenever you want and you usually have an interested crowd following along. Fail or succeed, atleast I can count on the skoolie crowd being accepting and understanding.
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Old 08-08-2007, 11:26 PM   #13
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Re: flea bay tankless water heaters.

the way to invent is to try, success comes from failure. GO for it
good luck
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Old 08-09-2007, 12:15 AM   #14
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Re: flea bay tankless water heaters.


I have one of those 115 Volt shower head heaters here -- still in the box. I'll report back once I get it working.
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Old 08-10-2007, 10:15 PM   #15
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Re: flea bay tankless water heaters.

cool I'll keep watching for your post
dale
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Old 08-10-2007, 11:34 PM   #16
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Re: flea bay tankless water heaters.

why not mount one of those on the roof of your bus?

Quote:
2 - 2'x20' pre-plumbed panels
Heats pools up to 24'
For pools 24' and over additional panels required
Increases your pool water temperature up to 10 degrees
Most efficient solar panel in the industry - producing over 80,000 BTUs a day
Compatible with your existing pool pump
10 year prorated warranty
Better than a gas heater - no gas line, no gas bills, no pollution
Made in the USA for quality you can count on
More Tubes per panel than other brands!
I'm sure they would provide you with plenty of warm water to take showers etc.
I was thinking if I could somehow mount this on the roof or have it stored in my storage boxes while driving and set it up when stationary. The water lines could be plumbed with quick connectors, only need a pump to get the water up and then its gravity fed.
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Old 08-10-2007, 11:43 PM   #17
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Re: flea bay tankless water heaters.

with the water adding weight to the unit itself, how much weight would the roof need to carry
most importantly would it. am assuming that this is apretty big unit?
neat idea tell us more
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Old 08-10-2007, 11:45 PM   #18
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Re: flea bay tankless water heaters.


Price?
I've been thinking just a bunch of ABS pipe on the roof.
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Old 08-11-2007, 12:08 AM   #19
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Re: flea bay tankless water heaters.

buy it now price on e-bay is $149, but there is many that are auctioned off and they go anywhere from $80 up or so.
One panel with water is around 45lbs. each kit includes 2 panels, could mount one on the left and one on the right. Defenetly not to heavy for a busroof.

Quote:
SunGrabber
Above Ground Pool SOLAR HEAT EXCHANGER
DESCRIPTION: The Sungrabber™ Solar Collector is manufactured in Chico, California. The collector
is a specially developed, highly stabilized polyolefin and is of parallel, circular channel
design. It is unglazed, un-insulated, and designed for low temperature applications
such as swimming pool heating, heat pumps, aquiculture, and hydroponics.
DIMENSIONS:
ROOF MOUNTING SPACE: Width = [Number of panels X 27 in. (68.6 cm)] + 24 in. (61 cm)
Length = Panel length + 24 in. (61 cm)
RACK SPACE: Width = [Number of panels X 27 in. (68.6 cm)]+ 2 in. (5 cm)
Length = Panel length + 6 in. (15 cm)
WEIGHT: Without Water:
2 ft. X 20 ft. 12.3 lbs (5.6 kg) or 0.27 lbs/ft2 (1.3kg/m2)
With Water:
2 ft. X 20 ft. 43.4 lbs (19.7 kg) or 1.0 lbs/ft2 (5.0kg/m2)
TEMPERATURE: Normal operating temperature = 60oF to 90oF (16oC to 32oC)
Maximum continuous operating temperature = 212oF (100oC)
Maximum intermittent temperature (un-pressured) = 250oF (121oC)
Melt temperature = 338oF (170oC)
FLOW: Maximum recommended flow = 4 gpm per panel
Minimum recommended flow = 1 gpm per panel
Recommended flow = 3 gpm per panel
PRESSURE: NORMAL OPERATING MAXIMUM INTERMITTENT
PRESSURE PRESSURE
80oF (27oC) 0 to 30 psi 45 psi
(0 - 2.11 kg/cm2) (3.16 kg/cm2)
212oF (100oC) 0 to 5 psi 5 psi
(0 - 0.35 kg/cm2) (0.35 kg/cm2)
70oF (21oC) Measured burst pressure of panel body = Over 300 psi (21.1 kg/cm2)
TM
2ft x 20ft:
Effective Area
243.25 in (6.2 m) 39.0 ft2 (3.6 m2)
239.25 in (6.1 m)
23.5 in (0.60 m) 27 in (0.68 m)
PRESSURE DROP:
CHEMICAL RESISTANCE: Compatible with common collector fluids
CORROSION: Non-corrosive
FREEZING: The system should be drained before freezing conditions occur.
WEATHERABILITY: Weatherometer, accelerated outdoor exposure, and other extensive laboratory testing
demonstrates long-term weatherability of Sungrabber™ collectors (see warranty).
Additionally, Sungrabber's experience of 30+ years and over 1,000,000 collectors
installed confirms the proprietary stabilization and high mechanical strength.
ABSORPTIVITY: 0.96
EMISSIVITY: 0.90
All specifications and dimensions set forth above are as estimated by SunGrabber, but are not intended
to be precise and should not be relied upon as precise without independent verification. These estimated
specifications and dimensions are subject to change without notice. Nothing contained herein is intended
or should be construed to expand or extend SunGrabber 's warranty, or establish any express or implied
warranties of any nature, other than as contained in the Limited Ten Year Warranty Agreement.
(SunGrabber disclaims any other warranties and assumes no duty to provide notice if it becomes aware
of any deficiencies in these estimates.) The reader accepts full responsibility for any use or application of
these estimates and specifically understands and acknowledges the limited reliability of these estimates.
Additional test data available on request
P/N 07532B
09/06
link to pdf file http://www.sungrabber.net/SunGrabber...pec_07532B.pdf

http://www.sungrabber.net/SunGrabber_Pool_Heater.html
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Old 08-11-2007, 12:15 AM   #20
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Re: flea bay tankless water heaters.

Them thar skoolie roofs can hold some weight

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