Use the old fill valve to set the peak of the new fill valve. Area the new fill valve while in the tank. Tighten the nut to safe the fill valve. Flued heating implies that the heater can't be moved from area to space provided that It is fitted set up. https://residentialplumbing20516.bleepblogs.com/35098437/5-easy-facts-about-residential-plumbing-described