RVL41.0 Weather-dependent flow temperature controller (AC 220 V) without timeclock. Direct replacement by RVL480, same dimensions and panel cut-out. Sensors and valve actuators can be re-used, 
Key data to replacement product: room units available (QAW50, QAW70). RVL480 has many 
Key data to replacement product: features, including optimization, holiday programs, digital display and auxiliary functions. AZY11.x submodules no longer required - all functions available within RVL480. 
Info: If 2-position actuators are used, the RVP300 should be used. Frost protection function with RAD... is no longer possible. Do not use the existing base as terminals are different - the 
Key data to replacement product: unit must be rewired.