The DCAS4 is the new standard for ice dam prevention system controllers!

Starting in June, IceBlaster Edge Melt Systems ice dam prevention systems will feature a new weapon in our arsenal - the DCAS4. This controller features an industrial temperature controller with outstanding features. These include the ability to have two set points for precision control of your ice dam prevention system. The upper set point controls the temperature at which the system is turned on - typically about 37 degrees F. The lower set point controls the temperature at which the system turns off when it goes below - the low temp cut out (LTC). The idea is that once it is below 5 degrees F or so, it is usually too cold to snow significantly and snow melt from heat loss or solar gain is less likely to occur. This is what is known as 'window' operation. These set points are completely adjustable.

The DCAS4 mounts indoors near the circuit breaker panel. The temperature is measured through a probe (thermistor) that is mounted outdoors on the shaded side of the building. The panel has a three position selector switch that allows for Automatic control (on and off based on set points), manual control (on no matter what the temp is outside), and off. All of the controls are on the outside of the panel and it comes with an industrial UL 508A label. (Believe it or not, other competitor versions of this require you to go inside the panel near the high voltage to access the switch and display. Another competitor version is produced in a roofing warehouse with no UL label.)

The DCAS4 measures ambient temperature only. Why not also do snow sensing? Snow sensing probes can be problematic. They require annual maintenance. They also have a built timer or delay, which means that once it is done sensing snow, the controller would turn off after a short delay. This becomes a problem when gradual snow melt does not retrigger the snow sensor. Thus, these snow sensing controllers need a manual override that requires user input to constantly reset. If user participation is required, we believe it better spent on turning the DCAS4 off when it is not needed for added energy savings. No snow sensor to maintain. For those who are away for extended periods, the DCAS4 is the most reliable controller available.

The DCAS4 measures 10"x 8" x 4" and is housed in a durable metal enclosure. It comes with a two year warranty. It can operate up to four separate branch circuits (up to 240 volt 30 amp each). While this panel is suitable for commercial and large residential projects, it is priced to be used on more modest projects as well.