Laing D5 Solar/090B PV-Direct Circulating Pump review

I just finished a 25 Tube Evacuated Glass solar thermal install using this pump. Our plumber had no issues and the 30W solar panel is powering it directly just fine even in varied conditions.\r\nI wanted better instructions; a diagram of the dial and something detailed in regards to the Auto Setting. The dial indicator is hard to understand and see. The integral check valve is a nice feature.

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