Preseason tune up on 4 year old Weil McLain gas boiler installed by Chud on 11/07/18. Pulled/cleaned burners, verified proper combustion (CO PPM 7), verified proper gas pressure and inspected all “trim kit” items for proper operation. Water heater was upgraded same day as boiler. Tested LWCO. Verified Taco ZVC403 panel is functioning properly for each of the 3 zones. Boiler operating properly and ready for the season. Weil McLain M#CGA6-PIDN, CP7686193.