EbV Product documentation THETA NORM/UNIT
8-52
Prerequisite: The temperature of the solid-fuel boiler is at least 10 K over the minimum
temperature limit.
The minimum value is 3K above the switch off differential.
Switch-off
differential: Switch-off differential solid fuel boiler buffer tank (SD
OFF)
If the temperature difference is lower than the switch-off differential, the loading
process is terminated and the pump is switched off. The maximum setting value is
always 3 K under the selected switch-on differential in order to prevent rear
discharge of the buffer tank.
Inhibition H-GEN: Solid fuel inhibition H-GEN
The solid fuel inhibition serves to prevent frequent switching between loading
through the solid-fuel boiler and loading through a conventional oil/gas heat
generator.
After the solid-fuel loading pump has been switched off, the set time must pass
before loading of the buffer tank is continued through the conventional heat
generator.
Anti-blocking
protection: This is an automatic function of the controller. If the solid fuel loading pump was
switched off for longer than 24 hours, then it will be started for 20 seconds in order
to prevent blocking through corrosion.
Operation buffer parameters:
Note on operation Key / parameter tree Parameter
Buffer sensor 2 (bottom) HYDRAULIC PARAMETER 08
or
PARAMETER 09
or
PARAMETER 10
Minimum temperature BUFFER PARAMETER 01
Maximum temperature BUFFER PARAMETER 02
Switch-on differential BUFFER PARAMETER 03
Switch-off differential BUFFER PARAMETER 04
Inhibition H-GEN BUFFER PARAMETER 05
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