I have a car wash that utilizes radiant floor heat. I used to use a slabstat to monitor my system, but that is no longer feasible. What I would like to do is to use an aquastat to measure the return temperature of the solution and operate the boiler off of that. In doing this, I hope to realize some energy savings in comparison to using the old style slabstat...the only problem is that I don't know where to start with purchasing the right components, can anyone help?
Post by Christopher on Oct 19, 2010 7:01:34 GMT -6
I'm not sure you'll see any great energy savings. Is this a snowmelting system, or just something to help evaporate water? All the aquastat will let you do is pick a high and low water temperature on the return. I suppose if you set the high mark lower than the water temperature is now, you'll save some, but you'll also reduce the effectiveness of the system. As for what you'll need, you should just need the aquastat, which will then regulate the boiler accordingly. It will have an NC contact as well as an NO contact, and shouldn't need any external power; it's pretty simple. I'm not sure we sell any aquastats anymore, honestly.
Post by Christopher on Oct 20, 2010 10:45:57 GMT -6
Since this is a snow melting system, what your slab sensor was doing was sensing moisture and temperature. When the temperature dropped below 38 degrees and there was moisture present, it would kick the system on.
If it is no longer possible to have a slab sensor, I'd suggest an LCD-1H pole mounted sensor. This works the same way, however you'll mount it out in the open where snow can fall on it.
Snow melting systems generally only need about 80 degree water, if that, so you probably don't need to worry about upper temperature limits. Even so, if you did limit that water temperature to lower than is needed, you won't be able to melt the snow/ice.
Either way, I'd contact our rep in that area, Dave Watson & Associates, at (517) 263-8988. I don't see any wholesalers directly nearby, so they might have a better idea where to buy.