Completed Weil McLain boiler installation. Installed 3 new zone valves, new zone control panel, 3 new T1 thermostats, expansion tank, spirovent air eliminator, auto fill back flow preventer, added new isolation valves and bled air out of all 3 loops. Adapted to existing plumbing, electrical, gas line, and flue pipe. Cycled and tested, system working properly at this time.