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Old 05-20-2013, 02:16 PM   #11
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UltraHeat, Inc. - FAQs

From the FAQ:

1) The heaters must must not be turned on without liquid in the tank.
2) The heaters must must not be turned on when temps will be above freezing.
3) The heaters will operate just fine using the truck's alternator when traveling.
4) They will maintain (and cycle independently) between 44 and 64 degree F - ON at 44 and OFF at 64.
5) Initially, they will be on for quite a while if you wait till 44 to turn them on since it will need to warm all that liquid up to 64 degrees. Turn them on when you think you might need them. It is easier to keep warm tanks warm than warm up a near frozen tank.

6) THEY WILL NOT THAW OUT FROZEN TANKS OR VALVES!
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Old 05-20-2013, 02:43 PM   #12
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Lou,
I asked some of these questions in the PrimeTime area. The PrimeTime representative talked to both the tank manufacturer and the heating pad manufacturer and the conclusion, with those tanks and heaters is that it's perfectly alright to turn them on for empty tanks. See post #6 here.

It also doesn't make much sense to say not to turn them on for temperatures above freezing and then to say that they should be turned on before the temps get down to 44!
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Old 05-20-2013, 03:03 PM   #13
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Originally Posted by BarryD0706 View Post
It also doesn't make much sense to say not to turn them on for temperatures above freezing and then to say that they should be turned on before the temps get down to 44!
You would think so wouldn't you. However if the temps are not forecast to go below 32 degrees; why would you turn them on at all?

Same logic seems to apply with empty tanks, I would think.
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Old 05-20-2013, 03:24 PM   #14
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Same logic seems to apply with empty tanks, I would think.
In the OP's case, one switch and 2-4 tanks, one of which could be an unused FW tank. Not much choice.
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Old 05-20-2013, 03:26 PM   #15
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Quote:
Originally Posted by BarryD0706 View Post
In the OP's case, one switch and 2-4 tanks, one of which could be an unused FW tank. Not much choice.
You are right; it won't hurt and empty tank, but burning electrons unnecessarily irks me.
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Old 05-20-2013, 03:46 PM   #16
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on at 44 deg off at 64 deg. This is the temperature of the tank and contents, not the air temp.
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