The ON/OFF zone valves type AMZ 112 and AMZ 113 are typical used in connection with: Commercial central heating applications; Solar energy plants; HVAC; Priority control of hot water supply and heating (diverting function); Priority control of boiler and solid fuel installations (diverting function). The ON/OFF zone valves can be applied together with most Danfoss Room Thermostats, particularly type RET 230 (single poled switch) and programmable Room Thermostats type RET 1000/2000. Other compatible room thermostats are available, please see www.danfoss.com/heating for details.