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Copyright Solar Wave Energy

JV Washam

Solar Hot Water Heating System

Cornelius, NC

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JV Washam School Collectors

JV Washam

Installed by Strata Solar

First Data Point 10-05-2012


A commercial drainback system with 4 arrays of 5 collectors which directly heat a solar drain back tank. The drainback tank then indirectly heats the DHW through an external heat exchanger.

Site contains:

  • 20 SolarHot Equinox S-C-771D40 Flat Plate Collectors. SRCC#: 2010038C
  • Gross Area of Collectors - 788 sq. ft (73.2 sq. m)
  • Tilt Angle of collectors - 30 degrees
  • Solarhot Storage Tank with 1200 gallon capacity
  • RESOL Deltasol BX controller
  • Grundfos VFS 5 - 100L Flowmeter and Temperature Sensor
  • A Thermal-Grid DL2 to send the data to the servers
  • Grundfos RPS Pressure and Temperature Sensor
  • collector azimuth 225 degrees (south west)
  • Rated Power Output: 51.2 kW
  • Flat Plate

JV Washam School Collectors
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To change time, click and drag scroll bar at bottom of schematic. The selected time can be seen on the clock.

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Select a day or week from calendar. This will show the average of dates selected. (ex. Tank Sensor average at 1:00pm for 1 week)

Color of sensor bubble changes as the sensor value changes. Blue indicates a low value, and red indicates a high value.

Available Sensors:
Collector (S1)
Tank Bottom (S2)
Tank Top (S3)
DHW (S4)
Production Loop Cold (RPS)
Production Loop Hot (VFS)
Collector Pump Relay (R1)
Indirect Heating Pump Relay (R2)
Booster Pump Relay (R3)
Production Loop Pressure (RPS)
Production Loop Flow (VFS)
Outdoor Ambient Temp
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