This 4-hour class will teach you to correctly size and install Navien's NPE water heaters, NHB boilers and NCB-E combination boiler/water heaters. We'll cover components of the equipment, gas piping, venting/common venting, wiring, controls, accessories, cascading and much more. We'll also be providing a sneak peak at Navien's new NFB firetube boiler scheduled to be introduced this summer!
