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jace
Member
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# Posted: 19 Oct 2016 12:59 - Edited by: jace
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hello, I currently am using an Eccotemp L10 water heater being fed by the recommended 12V flojet 2.9gpm, 50 PSI pump. I would like to switch to an AC pump and looking for make and model recommendations. My concern is eccotemp says the unit requires a 50 psi pump and most AC pumps I see are rated at 40-45 PSI. This concerns me because I run an inline water filter on the outlet side of the pump and sometimes the heater doesn't fire. water line runs after the pump are no longer that 10 feet, and no higher elevation than 6 feet. Eccotemp is telling me its a pressure issue. Any help would be appreciated.
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sparky30_06
Member
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# Posted: 19 Oct 2016 16:02
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where are you pulling your water from?? are you able to measure pressure after your filter?
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Popeye
Member
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# Posted: 19 Oct 2016 20:49
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http://www.eccotemp.com/blog/common-misconceptions-about-water-pressure-regarding-l5- l7-and-l10-models/
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Atlincabin
Member
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# Posted: 20 Oct 2016 08:44
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I believe the Shurflo pumps can pump more than 45 psi. You may have to adjust the pressure switch, but I think the pumps come with instructions on how to do this. Typically just a small screw that adjusts a pressure spring.
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jace
Member
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# Posted: 20 Oct 2016 12:48
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Thanks guys for the help.
pulling water from a 275 gal tote at roughly ground level with the pump
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jace
Member
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# Posted: 7 Nov 2016 13:38 - Edited by: jace
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so I installed the shurflo pump this weekend. When I turned on the water to my sink. (3 feet) from the pump I was getting a constant on off surge from pump. the directions say this is due to flo restriction on the out - side of the pump and possibly the shurflo accumulator tank will resolve this. I adjusted the PSI screw on bottom of the pump and this did not help at all. My question is what diameter plumbing are you guys using after your pump ? 1/2" the whole way to your fixtures or 3/8" to fixtures ? I was using on of the 3/8" flex sink connections on the outside of my pump to the sink and wondering if this is causing my surging issues. I never had this problem with the 12V pump prior to installing the AC pump.
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TranquilMan
Member
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# Posted: 9 Nov 2016 22:47
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Before I bought my pump I found a phone number for Shurflo on the web site and called them and talked to a tech support guy. I gave him all the details of my situation and he told me which pump to buy and how to install it. He was really helpful.
Tranquil Man
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LoonWhisperer
Member
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# Posted: 10 Nov 2016 15:04
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Another happy L5 (with pump owner here). Best $200 I have spent so far. Can't believe I waited so long to do this.
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SE Ohio
Member
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# Posted: 11 Nov 2016 09:39
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Jace,
Sorry to chime in after the AC pump purchase, but can you use a 120 volt AC to 12 volt DC power supply and go with the original working pump? Make certain power supply can handle the max current X 3 or more. These "wall wart" power supplies are often USD $1-2 at thrift stores. Also verify that it produces DC, as some are mere step-down transformers producing 12 volts ac!
The accumulator might solve your AC pump problem, but that's another purchase and install item. I added one to a spinkler system that used a pressure switch to address same issue.
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morock
Member
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# Posted: 11 Nov 2016 13:42
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I changed out the 1/2 pump connectors to 5/8 connectors and 5/8 flex hose then to 3/4 pex and then 1/2 pex to the fixtures (short runs). It made a difference for me. I use two pumps one for each hot and cold. I found I wasn't getting enough water at my fixtures.
This will be my 4th year messing around with my water system, I have a few more tweaks but i'm finally happy with my setup.
Keep at it, you will get there. 
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HiddenMountain
Member
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# Posted: 22 Nov 2016 22:27
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Quoting: jace hello, I currently am using an Eccotemp L10 water heater being fed by the recommended 12V flojet 2.9gpm, 50 PSI pump. I would like to switch to an AC pump and looking for make and model recommendations. My concern is eccotemp says the unit requires a 50 psi pump and most AC pumps I see are rated at 40-45 PSI. This concerns me because I run an inline water filter on the outlet side of the pump and sometimes the heater doesn't fire. water line runs after the pump are no longer that 10 feet, and no higher elevation than 6 feet. Eccotemp is telling me its a pressure issue. Any help would be appreciated.
I have the exact same water heater and with my gravity fed water pressure at 30psi, it works just fine. You have to fiddle with the settings but once you find the sweet spot it works flawlessly.
Hope this helps.
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