Operating mode
The RFI mixer can be operated in "SF increase" (solid fuel boiler), "setpoint" or "heating circuit automatic" mode.
SF increase: motorized return flow increase for a solid fuel boiler.
Heating circuit automatic: the setpoint temperature, which is provided by the RFI mixer at the flow sensor, is specified by the heating cir-
cuit 1. In addition, a target flow offset can be set.
Setpoint: The setpoint temperature, which is provided by the RFI mixer at the flow sensor, will be set fixed under see "Tsoll".
Reference flow sensor
Sensor for monitoring the reference variable of the RFI function. The mixed temperature of the RFI mixer is measured at this sensor and
compared with the current setpoint value. If the flow rate falls below or exceeds this limit, the mixer is controlled or controlled accord-
ingly.
Tref:
Temperature controlled by the mixer.
For operating mode solid fuel boiler
When using a motorised return temperature control for a solid fuel boiler, the minimum temperature of
it should not fall below the return (Tref) of the solid fuel boiler. Please refer to the boiler manufacturer's
instructions.
Return flow sensor:
Sensor in return
Storage sensor:
Sensor in storage
Direction:
See " Direction " on page 45
Min off time:
Minimum timeout setting of the function
On-time:
See " Mixer turn time " on page 45
Off factor:
See " Mixer off factor " on page 45
Increase:
See " Mixer increase " on page 45
Max one direction:
Maximum cycle time until the mixer is fully clocked on/off.
Signal type
Only available, if the function is used on one of the V-outputs. The type of device to be controlled is set here.
0-10V: Control by 0-10V signal.
PWM: Control by means of a PWM signal.
46
To Next Page
Loading...