yearlylesson
Active Member
Wow, very impressive, looking forward to seeing the finished project.
That's what an AC does anyway. However, there's not much moisture in NM right?
Maybe it's better to call it the side of the wall most likely to have hot moist air.
OK - I need some ideas of what I could use as a heating element to be controlled by a Ranco. If it is small and running on 110 it would be best.
I am learning towards the coolbot. The think I like is how it works. I doesn't mess with the AC unit, but rather uses a small heating element attached to the AC thermostat to "fool" the AC unit into keeping running.
You are right about the frost thing. I don't think we would need one around here.
Actually, That would be really easy to copy, Maybe a fish tank heater or something like that, controlled by a Ranco. You put the heater in direct contact with the AC's element and have the Ranco turn the heater on and off based on the temperature you want the Room to be.
OK - I need some ideas of what I could use as a heating element to be controlled by a Ranco. If it is small and running on 110 it would be best.
Ahhh yes "warranties"... I'm bad at holding on to those...
On my ac unit the thermostat consisted of 2 blade connectors, not too sure if disconnecting those is a warranty voiding action.
Here's a goofy site about building small DC heaters:
Heaters
You might also consider only running the heater when you are running the A/C, it might take a few minutes to come up to temp and kick the A/C on but it won't be constantly heating your room.
That is what the Ranco does. It turns the heater on and off based on the set points you select. When the heater is turned off the heater stops and so the AC's sensor reads "cold" and turns off. When the Ranco's sensor reads warm (based on the set points you select) it turns the heater on, which in turn causes the AC's sensor to read "warm" and turn on. Pretty simply and slick set-up.
We are talking about the same thing I believe, The AC unit only runs when the heater is on and the heater on runs when the room needs to be cooled. I will find the video from coolbot and see if that covers your thought or if I am just out of the loop so to speak,
Basically all resistors produce heat when they are passing current while under a voltage. As in P(watts)=I(amps)^2*R(ohms), or from the voltage point of view P(watts)=V(volts)^2/R(ohms)Where do you get such a beast? You are speaking hebrew to a gentile here! I'll send you a PM.
If you want the temp sensor on the AC unit to be kept warm, can't you just run it out the back of the unit so it's outside of the cold chamber? Is it a resistive-type temp sensor? If so you could just measure the resistance at a warm temperature and replace the temp sensor with a resistor.
Then you could just run the AC unit through the temp controller as dantodd suggests. Is there any issue with the max current exceeding the rating on the controller? Since the Ranco doesn't have the cycle hysteresis setting, maybe the Johnson Controls version is better suited for this application. Not sure if it's really an issue.
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