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Heating Up While Cooling Down When Gateway Canyons Resort in Gateway, Colo - rado wanted to switch to a solar heating system to warm their two pools and a spa, the plans called for thermal solar collectors on top of the carports in the parking area. They chose Cloward H2O of Provo, Utah as the water and pool engineering company to give them a hand. Cloward suggested they instead opt for the Ther- maPANEL system from Therma-HEXX, a sub-sur- face system that collects solar heat from the patios to provide 24 hour heating of the pools from the re- tained energy in the thermal mass of the pavers, cool those pavers during the heat of the day, and elimi - nate the need to install screening to hide roof-based solar collectors. Landscape architect Greg White of DTJ Design in Boulder, Colorado designed the project and FCI Constructors of Grand Junction, Colorado super- vised the build. Since it was a ground mounted in - stallation, it required an ICPI approved sub-base, with a thin layer of sand on top of the base to fill any voids in the rough base material. Therma-HEXX installed the solar thermal system, which consisted of 2,000 1.4-inch-thick solar panels with one-inch-thick, three pound density EPS foam insulation mounted to the back of them. The pan- els are factory connected in rows up to 50-feet-long, and then folded into 6-foot-long boxes for shipping. At the job site, the bundles were set out at one end, unfolded into place, and then hooked up to send/ return manifolds with polyethylene raised tempera- ture (PE-RT) tubing row by row until the entire zone Above: A ThermaPANEL system from Therma-HEXX, which is a sub-surface system that collects solar heat from pavement, not only provides 100 percent of the heat to warm the two pools and a spa at Gateway Canyons Resort in western Colorado, it has also cooled the pavers down from 185 degrees to 125 degrees. PHOTO: DTJ DESIGN, INC. 24 LC DBM Sub-Surface Assists By Mike Dahl, LC/DBM Installing heating and cooling elements underneath pavers is an excellent add-on service to present to customers where frigid winters render driveways, walkways and patios dangerously slippery and sometimes impassable, or blistering summers make walking on paved areas uncomfortable, and possibly painful. Here, LC/DBM presents three examples of this type of work to point out the varied options, and provide guidance on installation procedures. PHOTOS: THERMA-HEXX CORPORATION (EXCEPT WHERE NOTED)