MIXED SYSTEMS: BOILER, DHW, HEATING AND AIR CONDITIONING RICCIUS+SOHN has developed a new controller in the control system unit PLUS compact . The controller UPK.1K-11L2 which combines the control of boiler plants and air handling units. Functions: Control of 1 boiler circuit, 1 domestic hot water circuit, 1 heating circuit, 1 air handling unit with 4 system components and 2-stage ventilator, with 4 timer, energy management. Analog inputs: 3x 0..10V, 13x M-sensor. Digital inputs: 10x EK Analog output: 4x 0..10V Digital output: 12x relays 24V AC, Interfaces: CAN-Bus, Optional: SSK, radio clock, M-Bus, SSKM Here are a few examples for availlable system diagrams