Equipped with a room thermostat to control the temperature in the rooms
Assures the boiler mandatory start, when the room temperature is too low, only need little gas can conduct antifreeze protection safely.

The conventional water handling process was used to recover heat energy of slag for heat supply in winter, which achieved better energy saving effect
Traditional heat supply based on burning mineral fuel in boilers not only wastes energy but also pollutes environment.

Properties:
Steam linkage protector will prevent dryout, more safety and dependable
Relaxed fire up protector, used more close
Unexpected flame-out protection device
Timing poweroff protector
Water-resistant overvoltage protective device
South style, frequency conversion at temperation, changes in metal temperature
North style, prevent freeze protector, a comfortable winter.