I am replacing a 20 year old Raypak pool heater that was finally killed by the freeze here in Texas. I have a new heater (Pentair) arriving today and I am dismantling the Raypak heater. I need to disconnect the propane as one of the final steps. The gas is turned off and the propane company is coming Thursday to connect the new heater. Please take a look at my photos and let me know how to disconnect the propane from the current heater. As you can see, there is a copper line feeding a regulator. From the regulator I have black pipe feeding the Honeywell gas controller on the heater. It is unclear to me how to begin taking that apart.