Arrived at location on 7/13/21 - inspected unit. Found both ir burners to be in poor condition. Unit would light and go out and then intermittently have delayed ignition. Turned off gas shut off to unit. Top left behind shelf. Will obtain replacement burners and return. Parts to be ordered qwp approval from Richard. Unit down to prevent use. Returned to location on 7/15/21 - Arrived on site and installed replacement burners. Tested unit and now have proper functions. Unit ok for use