District heating controller (AC 220 V). 100 % replacement by RVD250 (1 heating Zone) or by RVD260 (2 heating zones). All sensors and valve actuators can be re-used, however the unit must be re-wired. Same dimensions and panel cut-out. Bus communcation between RVP97 and RVD is not compatible. 
Info: No OCI97 is required to connect the M-Bus. Do not use the existing base as terminals are different - the 
Key data to replacement product: unit must be rewired (see Data Sheet).