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Thank you for your reply. In that the series 67 unit currently on the boiler which I intend to leave on the boiler is identified as a "low water cut off" do I need to install a separate "low water cut off"? Bob

thank you for your reply. Although I am leaning toward ignoring the series 67 unit and rely on manual monitoring of the water level how much do you want forl your series 67.

Last year I converted from oil to gas. Although I serviced my previous oil burner annually is annual servicing of the gas burner required, Bob

My existing series 67 low water cut off is not working. Before automatic fill units were used one simply manually maintained the proper water level using the sight glass. That being said would there be any problem for me to ignore the series 67 unit and simply maintain the proper water level...

My series 67 low water cut off is not working. Before replacing or repairing it I was wondering if repaired units are available. Bob