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Author Topic: water heater size  (Read 3614 times)
Nick Badame Refrig/ACC
1989, MCI 102C3, 8V92T, HT740, 06' conversion FMCA# F-27317-S "Wife- 1969 Italian/German Style"
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« Reply #15 on: September 15, 2008, 06:26:51 PM »

Hi Bob,

I have both electric and flat plate for domestic.

I have a 12 gal 115v electric H2O heater that I have set to reach 145 deg's, I then have a domestic mixing valve to mix it back down to 115 deg's.

To my calculations, it's like having a 17gal heater. Two showers back to back and still hot.

When I'm not on free electric, I use my Proheat to heat the flat plate and like Ed Skiba's 2 min's and HOT!..

Good Luck
Nick-
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« Reply #16 on: September 15, 2008, 06:34:20 PM »

My 12 gal Seward 110v with a heat exchanger has worked good for me I use the engine , the heating system or the 110v
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« Reply #17 on: September 15, 2008, 06:49:17 PM »

 I use the same heater as Ace ,It is truly ,amazing,and inexpensive(as it is a 110 unit) It is simple to hook up ,and require minimal space. One thing about is,if it does not suffice,you can in most cases add another.
Bill
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« Reply #18 on: September 15, 2008, 07:16:56 PM »

Ednj

How many plates and size of you heat exchanger? I have 12 gal 110 with heat exchanger but it is kind of big and would like info on your plate exchanger.
Thanks John


These are very similar to the one I have http://stores.ebay.com/Dudanations-Biodiesel-Supplies .
10 plate takes up "NO room"at all, No tank,No bay space, no electric, no propane, no inverter. If you have 100 gallon fresh water tank thats how much HOT water you can have, No waiting for recovery.
« Last Edit: September 16, 2008, 04:22:45 PM by Ednj » Logged

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« Reply #19 on: September 15, 2008, 09:03:35 PM »

Thanks Ednj

I have looked at these for my 2010 to heat my engine. I guess I didn't think about my hot water. I'm glad you posted your results. One question; do you recycle the water back to fresh tank till you get hot water flowing?

John
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John Riddle
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« Reply #20 on: September 15, 2008, 09:40:19 PM »

after living in my motorcoach full time for 10 years and going through 4 propane 6 gal heaters then living in my second coach for 5 years with a 10 gal heater I now have my final coach with a washer/dryer with a 30 gal 220 water heater lowboy. Screw those quick showers and laundromats.....I'll haul the extra weight for the convenience of having long showers...
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« Reply #21 on: September 16, 2008, 06:14:23 AM »

Thanks Ednj

I have looked at these for my 2010 to heat my engine. I guess I didn't think about my hot water. I'm glad you posted your results. One question; do you recycle the water back to fresh tank till you get hot water flowing?

John


John

In my case if the pro heat is hot the water is hot...

If itís hooked up to a fresh water supply you will run out of diesel before you run out of hot water.
If you did recalculate the water back to your tank that whole tank could be hot water.

You can also heat the proheat with your engine loop even by using the block heater and circ pump if you must use 110.

Ed
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« Reply #22 on: September 16, 2008, 10:08:04 AM »

Can anyone explain in plain english how exactly a Proheat can heat domestic water through a plate exchanger?  Is there a tank of water kept hot like a regular water heater?

If it is summer and the Proheat is not needed for heating, how does the Proheat know it needs to turn on when hot water is required?  Does the Proheat need to be left turned on?  Will the domestic hot water get too hot since the coolant from the Proheat is something like 170 degrees?

I have a Proheat to install and would love to remove the electric water heater partially blocking a bay if possible.
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Brian Elfert - 1995 Dina Viaggio 1000 Series 60/B500 - 75% done but usable - Minneapolis, MN
Nick Badame Refrig/ACC
1989, MCI 102C3, 8V92T, HT740, 06' conversion FMCA# F-27317-S "Wife- 1969 Italian/German Style"
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« Reply #23 on: September 16, 2008, 11:13:44 AM »

Hi Brian,

Your proheat can heat many things including your hot water by useing a flat plate exchanger, a zone valve,

and a tempering "domestic mixing valve'. You could store hot water in a tank also but, you would have to insulate

it well. Nothing more then a 10 gal tank is needed because your Proheat will recover quicker then you will use the water.

A domestic mixing valve is needed so you don't scold your family. The Proheat can get as hot as 180 deg. so you need to mix it

back down to 115 deg. with cold water.

Here is a pic of my flat plate
Nick-
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« Reply #24 on: September 16, 2008, 01:05:30 PM »

Thanks for all the input, I really wanted to go with a tankless but I do not feel I can do a proper installation with the space I have to work with. I will most likley go with another electric heater, 10 to 12 gal.
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Bob & Tracey Rice    Cedar Grove, Wi. (40mi. Milwaukee)

1956 GMC PD4104
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« Reply #25 on: September 16, 2008, 01:54:18 PM »

Bob if you have room for a 10-12 gal water heater then you already have twice the space you need for a heater like I used! Its about 18 inches wide and maybe 12 inches deep and about 14 inches tall. It's designed to go under a wet bar in the house. Don't let the small size fool you. Seriously, it has serviced our needs 100%. Just the other day, I had to plug it up, (I don't always keep it plugged in) and before I walked back into the bus, Susan said it was already getting warm! Maybe it wasn't fully hot but it didn't take long after that, that it was!
I got mine at Lowes as it was recommended to me by yet another bus nut who has had great service from theirs! It's blue in color and I can't remember the name right off but can look up the paperwork if your interested!

Ace
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« Reply #26 on: September 16, 2008, 05:32:10 PM »

Ednj
Thanks for reply I am now clear on your first post I thought it took two minutes for hot water. 

John
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John Riddle
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« Reply #27 on: September 17, 2008, 06:22:33 AM »

Ace,

I like the idea of a small heater but fear there would not be enought hot water for two showers. I have no problem with a Navy shower but my wife likes a fairly long shower. We have a 2.8gpm pump and I think the shower head is 2.5gpm. Do you feel the small heater would work for us? I could stack two and double the capacity.

Bob
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Bob & Tracey Rice    Cedar Grove, Wi. (40mi. Milwaukee)

1956 GMC PD4104
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« Reply #28 on: September 17, 2008, 06:36:29 AM »

Absolutely!

Ace
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makemineatwostroke
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« Reply #29 on: September 17, 2008, 07:09:05 AM »

Bob; I would go with the 4 gal under sink model I have 2.5 in my cook area at home it does recover fast but i don't know if it would keep up for a shower because it doesn't when everyone is washing dishes.It is a model w 152 In Sink Erator and I ordered the 4 gal W 154 like all things in a coach decide on how it is going to be used if your on shore all the time it would work ? but for camping you will be running the generator a lot because they are a high wattage use unit and the recovery rate is 6.8 per hr  have a great day
« Last Edit: September 17, 2008, 08:08:07 AM by makemineatwostroke » Logged
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