The RWF50 is used either as a 3-position controller without angular positioning
feedback or a continuous controller with analog output depending on the version. An
external switch can be used to change to a 2-position controller for controlling 2-stage
burners. The integrated thermostat function switches the burner on and off.
LED symbols on the front indicate the following operating states:
- Burner release
- Control pulses OPEN or CLOSED for driving the burner’s air damper when using a
modulating burner control, or stage I / stage II when using 2-stage burner control
- 2-stage operation
During operation, the digital displays above the keys shows the setpoint (green), the
actual value (red) and – when making parameter settings – the relevant parameters
The RWF50 is used mainly for controlling the temperature or pressure in oil- or
gas-fired heating plants. If the relevant parameters are set, the RWF50 can be switched to cooling mode and then controls in reverse operation.
