Key functions
Weather-compensated flow temperature control, with or without room influence, with simultaneous demand-compensated boiler and DHW control.
29 preprogrammed plant types can be selected from a combination of 6 heating applications and 5 DHW applications.

Heating circuit plant types
Control of a mixing valve serving a heating circuit (space heating)

Control of a burner (1- or 2-stage)

Control of a valve in the primary return of a heating zone with district heat connection

Demand-dependent control (precontrol) of a mixing valve / of the boiler temperature / of a heat exchanger (heat demand signal via data bus)


DHW plant types
Charging of DHW storage tank through control of a charging pump.

Charging of DHW storage tank through control of a mixing valve

Charging of DHW storage tank through control of a diverting valve

DHW heating via heat exchanger through control of a 2-port valve in the primary return

DHW heating with electric immersion heater only

DHW heating with solar collector


Additional functions
In addition to the functions of the RVL480, the RVL481 offers the following functions (no submodules or extra devices required):
2 programs for heating and DHW, each with 3 heating periods per day

1 multifunctional relay for switching on/off the plant according to various parameters and functions