Master Zone

Electronic digital device designed to control several types of zoned heating systems

In stand-alone mode several configurations are supported (2LT + 1HT, 3HT + 1LT, or up to 4HT), and further ones are available if it's connected to other 4To1 (or to Master Zone) and as a part of the system "One for All, All for One".
It can work with heat sources both ON/OFF and communicating via Bus, and connected to ON/OFF thermostats or to remote unit for enhanced functionalities.
LT Zones are controlled by remote unit, one pump, one diverting valve, one temperatura probe and high limit switch. In case HLS is activated only HT zone runs. 3 leds  (ON, OFF, blinking) are on board for basic diagnostics and to check the status of the zoned heating systems.
Most of the available functions can be activated through SW parameter, like Outside Temperature compensation (OTC), and smart algorithms have been developed in order to optimize the heating management.