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  1. MikeP860

    Solar Preheated Water and Oil Fired Boiler?

    CD, did you figure this out yet? I have a very similiar question posted in here. I have a relatively new oil burner with a tankless hot water system. I also have kids and every time they get in that shower, on goes the burner. I cringe at the sound and the fact that oil is still above $3 a...
  2. MikeP860

    Check valve doesn't work with Solar Drainback system.

    Hey Michael! There are two types of check valves. Unless you are powering your circulating pumps through a PV DC (solar panel), you should use the spring type check valves for AC circulating pumps. Another hint is that you should not install a swing type check valve vertically upside down...
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