Is there a particular type of black paint that should be used? Also, do we have to paint the bottom of the pipe as well - mine is already on the roof.
If you send too much flow you add pressure unnecessarily. Its not possible to send too little flow. Its true you want high flow for efficient operation but what is high flow? High flow for solar is low flow for the average pool with an oversized pool pump. Just feel the collectors to make sure there are no hot spots. That's efficient. Sens so much flow you add load to the pool pump and you just add load and electricity cost and you pressurize the solar panels.
First - Why the secondary bypass at the bottom? Isn't the "solar on Solar off" valve at the top a bypass valve? Why wouldn't you just turn this to solar off and proceed with your winterizing?
Second: Assuming the need for the lower bypass valve based on my first question. I think the narrator said "leave the bypass valve open as much as you can". Isn't the idea to run as much water through the solar panel as possible? If you bypass too much then don't you lose efficiency?
Is there a particular type of black paint that should be used? Also, do we have to paint the bottom of the pipe as well - mine is already on the roof.
Jumper15ful 7 months ago
If you send too much flow you add pressure unnecessarily. Its not possible to send too little flow. Its true you want high flow for efficient operation but what is high flow? High flow for solar is low flow for the average pool with an oversized pool pump. Just feel the collectors to make sure there are no hot spots. That's efficient. Sens so much flow you add load to the pool pump and you just add load and electricity cost and you pressurize the solar panels.
h2otsun 11 months ago
First - Why the secondary bypass at the bottom? Isn't the "solar on Solar off" valve at the top a bypass valve? Why wouldn't you just turn this to solar off and proceed with your winterizing?
Second: Assuming the need for the lower bypass valve based on my first question. I think the narrator said "leave the bypass valve open as much as you can". Isn't the idea to run as much water through the solar panel as possible? If you bypass too much then don't you lose efficiency?
Thanks
waltekinc 11 months ago