An APRS World ThermokSolar-4A runs the show.

It controls:

• Two Liang EcoCirc circulation pumps for the solar hot water heating loop.


• One Liang EcoCirc pump for domestic heating.


• Morningstar Tri-Star dump controller. Prevents the Tri-Star from boiling the hot water tank.

It monitors:

• Tank top temperature


• Collector out temperature


• Outdoor ambient temperature


• Tank bottom temperature


• Water meter (gallons)


• Input voltage


• Battery voltage