Dave D. wrote:
This might be useful for winter camping. Hot water won't freeze up. Although shouldn't the recirculation return to the hot water tank, not the main tank? At least this is how I plumbed my house's recirc. heat.
Yup. Did this years ago to prevent further freeze ups.
Mine is a small 1 amp DC pump that pumps water to a grundfos temperature regulated valve made for home circulating systems.
Manual switch or if cold the pump will cycle on with the furnace. Mine uses the cold side as the return so it gets some heat too.
