Expert area
Part 2: Overview of display values and settings
38
If a boiler, which had been configured previously, is no
longer found after a restart, or after updating the parameter
CONFIG NEW, an error message is put out. Pressing
CONFIG OK after entering the performance data, the
boiler is deleted from the configuration and the error
message is deleted.
NEW CONFIG (new BUS configuration)
If the BUS configuration was modified (e.g. additional heat
generators connected), the automatic search for heat
generators on the BUS may be activated here.
MIN MOD CASC (min. modulation cascade)
Every time the cascade controller calculates a total degree
of modulation greater than null and less than MIN MOD
CASC, the total degree of modulation is set to the value
MIN MOD CASC. Simultaneously, the clock inhibition is set
to 10 seconds.
HW-BOILER (number of stages for HW operation)
00 = HW preparation via header
01 - 08 = Number of heat generators in the cascade which
are coupled out of the cascade hydraulically for hot water
preparation.
!
It is essential that the HW-BOILER are at the
beginning of the BUS ID sequence => 01 - xx.
CONTROL DEV (header control variance)
Display of the header control variance
(set temperature – actual temperature).
DES OUTPUT (required system output [in %])
Display of currently required total output % (0-100)
=> Calculated set value from control system = System load
in per cent. The value is calculated, floating, and does not
take any skips caused by the switching operation into
account.
SWITCH VALUE (-99 – +99)
Internal control value => only for switching cascade!
If this value reaches "0", the next heat generator is also
connected (only after the delay time has elapsed). If the
switching value reaches "-0", the last heat generator is
switched off.
If the desired temperature is exceeded by 1K the boiler is
also switched off.
BLOCK TIME (currently remaining value)
Display of current delay time. Only if "delay = 0“ is it
possible to operate the next heat generator.
Содержание E8.5064 V1
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