The Hydronic Mixing Block from Viega simplifies wiring, piping and programming for radiant heating systems. It can be a user-friendly and economical solution for controlling radiant heating systems. It combines mixing, control, air elimination and a circulator in a single, simple unit that makes wiring, piping and programming easy. It has only three connections for simple installations, with clearly labeled fittings and ports, removing the obstacles with increased functionality, minimized settings and easy connections for piping and wiring. The installer inserts the fittings, mounts the unit into the bracket, and then ties it into the system. The block’s control offers an intuitive menu structure for quick, simple programming without sifting through multiple menus. 800/976-9819; www.viega.us.