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WLachnit
04/04/2017, 09:40 AM
How would I setup a condition for a heater, other than "on at 76deg" "pff at 78 deg"? Such as "if time is 4p to 9p, then off"? Do I have to use advance mode for device instead of heater?

vhuang168
04/04/2017, 07:42 PM
Yes.


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WLachnit
04/04/2017, 08:09 PM
Ok, so this should do it, right?

Fallback OFF
If Temp < 76.5 Then ON
If Temp > 77.5 Then OFF
If Time 16:00 to 21:00 Then OFF

vhuang168
04/04/2017, 08:15 PM
You need an on statement.


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kurt_n
04/04/2017, 10:51 PM
Ok, so this should do it, right?

Fallback OFF
If Temp < 76.5 Then ON
If Temp > 77.5 Then OFF
If Time 16:00 to 21:00 Then OFF

That will work perfect.

You might want to add a statement like...

If Temp < 50.0 Then OFF

... as the last line of the programming

The idea is that it should never reach that unless your temperature probe fails. When the temperature probe fails, it more often reports a reading of 20 degrees. Without that last line of code, if your temp probe fails reading 20, your heaters will turn on... and stay on. Not good.

WLachnit
04/04/2017, 11:13 PM
You need an on statement.


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Oops...copy paste error.

Fallback OFF
If Temp < 76.5 Then ON
If Temp > 77.5 Then OFF
If Time 16:00 to 21:00 Then OFF

WLachnit
04/04/2017, 11:13 PM
That will work perfect.



You might want to add a statement like...



If Temp < 50.0 Then OFF



... as the last line of the programming



The idea is that it should never reach that unless your temperature probe fails. When the temperature probe fails, it more often reports a reading of 20 degrees. Without that last line of code, if your temp probe fails reading 20, your heaters will turn on... and stay on. Not good.



What is the statement that I should add?

kurt_n
04/04/2017, 11:23 PM
What is the statement that I should add?

If Temp < 50.0 Then OFF

BlueRoofTang
04/25/2017, 09:07 PM
That will work perfect.

You might want to add a statement like...

If Temp < 50.0 Then OFF

... as the last line of the programming

The idea is that it should never reach that unless your temperature probe fails. When the temperature probe fails, it more often reports a reading of 20 degrees. Without that last line of code, if your temp probe fails reading 20, your heaters will turn on... and stay on. Not good.

Great tip. I added to mine. Thanks.

BlueRoofTang
04/25/2017, 09:08 PM
How would I setup a condition for a heater, other than "on at 76deg" "pff at 78 deg"? Such as "if time is 4p to 9p, then off"?
Just curious...why do you not want your heater on certain times of the day? Got lights that are heating it up enough already or something?

WLachnit
04/25/2017, 10:10 PM
I just changed my electrical service to a time of use from a tiered structure. I need to avoid peak times from 4-9p. And when you pay over $0.41 per kWh, every little bit helps.

Breadman03
04/25/2017, 11:16 PM
I just changed my electrical service to a time of use from a tiered structure. I need to avoid peak times from 4-9p. And when you pay over $0.41 per kWh, every little bit helps.



5 hours with no heat shouldn't be a big deal, though you might want to have an alarm set in case the tank dips too low. Such an alarm actually informed me when our furnace had failed :)

JustinFromAL
04/26/2017, 08:16 AM
Typically you want FALLBACK ON on heaters that have their own temperature controller in them. That way if your Apex locks up the heaters internal controller would kick the heater on and keep the tank from dropping too low.

I would also add in a "if it gets this low, even during the peak power time kick on the heater" line. That way if it's winter and you leave a door open or something your tank doesn't freeze.

Fallback OFF
If Temp < 76.5 Then ON
If Temp > 77.5 Then OFF
If Time 16:00 to 21:00 Then OFF
If Temp < 73.0 Then ON
If Temp < 50.0 Then OFF

Then of course setup some alarming to let you know if the tank drops out of acceptable levels so you can manually control it or see what's going on.

BlueRoofTang
05/10/2017, 07:33 PM
I just changed my electrical service to a time of use from a tiered structure. I need to avoid peak times from 4-9p. And when you pay over $0.41 per kWh, every little bit helps.

wow... we pay $0.09 per kWh.