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I have never worked on solar but I am trying to help an existing customer.
1. What static pressure do I need at the top of the solar aray? Is 4-5 psi ok like a std. hydronic system?
2. Do I need more pressure to prevent the fluid from boiling?
3. Do the pumps that pump through the solar aray need to be run 24/7 to keep the fluid from overheating.
The system is Bosh/Buderus if that helps