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DIY submersible water heater, build your own water heater

***Be sure to use a GFI plug with this!***

here is a link to the Through-Wall version http://community.theaquaponicsource.com/forum/topics/diy-heater-bui...

 COPPER WARNING! most of the elements are made from nickel plated copper and should not be used!

I have not found stainless elements at Home Depot. Some of the Lowes stores have them.

A quick search on the web will find several types in the 240volt range.

Some links to try:

 1500 watt in the 120 volts stainless steel unit.

http://shop.hardwareandtools.com/search?w=stainless+steel+heater+el...

 

 here are some stainless steel options. they only make them in 4000 watt+ at 240 volts.

http://www.amazon.com/Stainless-Steel-Water-Heater-Element/dp/B000U...

 http://plumbing.hardwarestore.com/51-598-water-heater-elements/stai...

10-18-2013

I've made a few changes to the heater parts list and instructions..

 

1500-5500 watt stainless element

12 awg cord

1-1/2" rubber coupling

1-1/2" reduced to 1" threaded

1-1/2" reduced to 1/2" threaded

1/2" water tight connector

 

Temp controller

 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

install the element into the 1-1/2" - 1" reducer.

...these are made to be inserted in one direction, so you will need to use a grinding wheel, or improvise, to remove the "stop" portion of the fitting.

some are sold with a round edge (pictured here) and some are squared (pictured above)

after removing the stop, connect the wires and install into the rubber coupler.

  

 

 

 

Here are a couple different

submersible options.

the top one has the wire ran inside the 1/2" irrigation "funny pipe" and fittings.

both work great!

 

 

 

 

 

 

 

 

 

I have used a heavy duty timer to control the temp. 15 mins on the hour will keep 300 gallons warm.

pex supply has thermostats    http://www.pexsupply.com/Temperature-Controllers-12741000

Use a GFI plug with this unit!

 

 

 

 

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New Video on Rob Nashes idea for diy watyer heaters

http://www.youtube.com/watch?v=_DMiYSoffBA

 

Thanks Rob

Just curious as to what type of controller is in the picture?? specs????
 
M D Fowler said:

 

this is what i got off ebay for less then $15.  i am not use to celcius.  it is a set and forget.  diffecult to install, but should be well worth it.

it will work for hot or cold and has a lot of other settings.  it would have been easy to install but i used thick wires for safety (and it was what i had in my shop already).  it has worked like charm and it very easy to just "set-and-forget".  i put a F thermostat next to it because it only reads C

 

 

Features:

  • Brand new and high quality.
  • A mini temperature controller.
  • With large and clear LCD display for better readability.
  • Wide temperature measuring range.
  • High performance and durable housing.
  • Heating and cooling control.
  • Temperature calibration function.
  • Delay protection function.
  • Ex-factory parameters locking function after short circuit.
  • Upper and lower limits of temperature can be set.
  • Can be used for domestic freezer, water tanks, refrigerator, industrial chiller, bolier, steamer, industrial equipments and other temperature-controlled systems.
  • Comes with temperature sensor probe.

Instruction Manual:

  • 1. Wiring diagram.
  • Binding Post 1/2: normally open contact of relay.
  • Binding Post 3/4: connect to 110V power supply.
  • Binding Post 5/6: after short circuit lock on default set, users can’t change.
  • Binding Post 7/8: connetct to temperature sensor.
  • Note: load means heater or cooling plant.
  • 2. Electric Property.
  • Range of temperature measurement::-50℃~110℃.
  • Range of temperature control:-50℃~110℃.
  • Temperature measuring error:±0.5℃.
  • Sensor Model no. NTC (10K/3435).
  • Control Accuracy:1℃.
  • Power Supply: 110V.
  • Data Storage:Yes.
  • Working Temperature: 0℃~50℃.
  • Storage Temperature:-10℃~60℃.
  • Package size:8.5cm x 7.5cm x 2.8cm

http://www.ebay.com/itm/110V-Digital-LCD-Thermostat-Temperature-Reg...
 
wes said:

Just curious as to what type of controller is in the picture?? specs????
 
M D Fowler said:

 

this is what i got off ebay for less then $15.  i am not use to celcius.  it is a set and forget.  diffecult to install, but should be well worth it.

what is the specific

part number for safe fish use for 120 or 240? Thanks 

you can look it up for 12v., 110v., or 220v.  the one i got was 110v

leo bugaeff said:

what is the specific

part number for safe fish use for 120 or 240? Thanks 

 

Did anyone else get a leak at the rubber boot? I wanted to test my unit out while I waiting for my gfi plugs to be brought home so I could install them and ZAAAAAAAPPPPPPPP I got a nice jolt in my body! lol live and learn but I did discover that there was a small leak in the boot. Plan B is putting silicone around the boot and using water tape to really seal it it. Just wanted to know if anyone else has had a problem like this or if I am the only one dumb enough not to follow safety

Dont use   "Silly Con"   it wont help, just makes a mess of things. you need to check the quick release at the power cord. and use a nut driver or wrench to tighten the boot, a flat head screw driver wont cut it. ..I prefer the through-wall version... it keeps the electric parts out of the water. and it hold the element at a slightly up wards position, which is best.. it prevents the tiny air bubbles from collecting in the pipe and burning out the element.  BE CAREFUL please!

 

 

follow the link at the top of this discussion for the thru wall version... here is a pic

Hey just read through this entire thread and didn't see anywhere if anyone has used the Ranco temperature controller and had any problems with submersing the temperature probe. I have read on some home brewing and salt water aquarium forums and got mixed feedback. Anyone used it in there system?

I use the Ronco  and it has preformed fawlessly

Benjamin said:

Hey just read through this entire thread and didn't see anywhere if anyone has used the Ranco temperature controller and had any problems with submersing the temperature probe. I have read on some home brewing and salt water aquarium forums and got mixed feedback. Anyone used it in there system?

I have about 30 of the Ranco Timers out there... they work great, and the temp probe can be placed in the water.

I will add that we have gone to only installing them as a through wall install, not the submersible.

Thanks for the info Rob. On the through wall heater thread you uploaded a picture of a submersible design that looked like you made a bunch of cuts it a pvc pipe and put the heating element in that. How did that design perform compared to the design with the riser that created the convection flow across the heating element?

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