System type: Closed-loop antifreeze system with heat exchanger
Percentage of hot water and heat produced annually: Est. 50%
Collectors: 7, Heliodyne, Gobi 410, 4 x 10 ft.
Collector installation: Roof-mounted parallel to roof plane at 15° east of south
Heat-transfer fluid: Dowfrost HD
Circulation pump: 2 Grundfos SuperBrute 15-58 (in series)
Pump controller: PLC (controlling all mechanical systems) by Optimal Energy Solutions LLC
Main tank: STSS Co Inc., 738 gal.
Heat exchangers: STSS Inc.; two parallel 120 ft. copper coils in lower part of tank (solar collectors to storage); two parallel 90 ft. copper coils in upper part of tank (storage to radiant heating); plus 180 ft. copper coil to heat/preheat DHW
Backup DHW: Heat Transfer Products Inc. SuperStor 50 gal., heated by Harman PB105 pellet boiler