Aqua-Hot™ Hydronic Heating System Owner’s Manual 07/04 Page 1SECTION 1: OVERVIEWAqua-HotOverview,continuedNOTE: This Aqua-Hot product utilizes an FDA approvedGRAS Propylene Glycol (P.G.) based water and antifreezesolution. This P.G. based solution is a Boiler type anti-freeze, which is Generally Recognized as Safe (”GRAS”) bythe FDA. For additional information regarding this GRASantifreeze product, please contact the Technical SupportDepartment at 1-800-685-4298 or visit the website atwww.vehiclesys.com.1.0 Aqua-Hot OverviewSECTION 1: OVERVIEWAqua-HotOverview The Aqua-Hot Heating System is an on-board Hydronic HeatingSystem (heating with hot water) that provides a continuous, on-demand supply of domestic hot water, as well as interior zoneheating where and when it is needed. Both heating features areaccomplished by a unique 12 Volt-DC Powered Diesel-Fired Burnerand a minimum of one 120 Volt-AC Powered Electric HeatingElement. (As the number of Electric Elements will vary betweenAqua-Hot models, please reference page 5 to determine theparticular model of Aqua-Hot employed.) These two heating sourcesmaintain the temperature of the Aqua-Hot’s solution of water andantifreeze. In addition, the Aqua-Hot has been designed to preheatthe vehicle’s engine prior to starting. This preheat feature providesan easy engine start-up whenever cool weather conditions arepresent. Be sure to review Figure 1 for a complete componentoverview.SECTION 1: OVERVIEW