Start time = 4:30am scheduled sailing Performed direct replacement of Navien 240A with Navien 240A2. Installed factory provided propane kit.. Installed new purge + isolation valve on recirc. return line. Tested all piping at working pressure. Confirmed operation of recirc. return. Used gas sniffer to check for gas leaks. Programming * set clock to proper time * setpoint temperature 120*F * fuel type set to Propane * set altitude to 0 to 2000ft. * set recirc. to external * set internal valve to recirc. * set dipswitch #1 to propane End time = 12:15pm arrival in Anacortes terminal Thank you for choosing CPI Plumbing and Heating Inc.