Thread: In Line Heaters
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Old December 1st, 2014, 09:14 PM   #9
KC2PED
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Join Date: Mar 2011
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Talk about ugly, my first heater back in the day was a two test tumb deal with rubber stoppers that the wires went through
I guess one tube was the thermostat that sat on the bottom of the tank and the yeating element was in the other tube that could never go below the water surface because the metal shaft of the temperature adjustment went through one of the holes in the rubber stopper
Now you get a heater with everything in one tube
The heating element is at the bottom of the tube and the thermostat at the top of the tube
So when you hang it vertically in the tank it heats the water at the bottom of the tank that rises to the level of the thermostat and shuts it off
I always put my heaters in the tank on a diagonal so the heating element is not under the thermostat but don't think I have ever seen instructions suggesting that configuration
With the newer submersible heaters I try to keep the thermostat in the upper third of the tank so the bottom hopefully gets warm without the top getting too hot
I have been intrigued by the inline heaters also thinking that they would heat the tank more evenly as the heated water is jetted back into the tank by the return pump
I am also considering adding an Azoo Micro Temp Controller which is an offboard thermostat
I would set the heater thermostat and the Controller thermostat at my desired temperature and it the heater thermostat were to fail in the on position the Controller would kill power to the heater if it sensed the water temperature was at the target temperature.
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