Today, November 30 2020, I performed a tune up on the boiler that serves the heating pad for the car wash bay at the esso station at 2487 91 avenue Se. Calgary. I pulled and cleaned the flame rectification and ignition systems. Cleaned the interior cabinet. Tested and flushed the safety pressure relief valve. Tested the gas valve and pressure. Tested the fan. Tested the air elimination system, expansion system, pumps and piping. The internal air elimination system was closed probably since installation and has now been opened. Checked the boiler programming and calls for heat. Boiler fires and maintains a return temperature of 125-130 degrees Fahrenheit. Tested axiom hydronic feeder for proper operation and pressure control / setting. Checked boiler heat e changer for any failures and excess debris. Checked venting for any leaks or errors. The boiler system appears in good condition at this time. Recommend yearly tune ups be performed to maintain the system.