Completed Weil McLain boiler installation. Added taco zone control panel, and 3 taco zone valves. Added 3 Honeywell T4 thermostats. Adapted system to existing plumbing, electrical, gas line, flue. Added spirovent air eliminator, auto fill back flow preventer, expansion tank, and service shut off switch. Added isolation valves to supply and return side of piping. Bled air out of all loops. Cycled and tested, system working properly at this time.