Rotex Controller Series, Продуктовая документация

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EbV Product documentation THETA NORM/UNIT
8-13
BCP extended
running time:
If there is no longer a demand to the heat generator the boiler circuit pump switches
off with time delay in order to avoid a safety switch-off of the heat generator at high
temperatures.
The extended run time depends on the type of heat generator and must be set
accordingly.
NOTE: An external heat generator block influences the BCP output.
8.1.14 Parallel heat generator release (PHR)
NOTE: Function active only if the function "Parallel heat generator release" was assigned in
the "Hydraulic" menu to one of the outputs "Direct circuit pump", "Variable output 1"
or "Variable output 2".
Function: Regardless of a request to the heat generator, the output programmed accordingly
(HC, VO-1, VO-2) is activated immediately when the burner relay is activated (no
pre-run time).
When the burner relay is deactivated the programmed output is switched off after a
delay time. The switch-off duration depends on the setting of parameter 14 (extended
run time) in the
Heat generator menu.
NOTE: A parallel setting of boiler circuit pump and parallel heat generator release is allowed.
The temporary interruption (Solar/Solid fuel) and the external heat generator block
influence the PHR output.
8.1.15 Return control
To prevent the return flow temperature from dropping below the minimum return temperature required by
some heat generators, the control system features various options for raising the return temperature. Once
one of these return control options is active, a parameter tree is activated where the appropriate settings
can be entered.
The parameter "Boiler return control" determines the lowest allowable return flow temperature for systems
with direct or indirect return control. When the heat generator return temperature drops below the set limit,
the respective return control device is activated and raises the return temperature until the set temperature
is reached or exceeded.
Operation:
Note on operation Key / parameter tree Parameter
Activation of the function
HYDRAULIC PARAMETER 05
PARAMETER 06
PARAMETER 07
Pre-run time boiler circuit pump
HEAT GENER. PARAMETER 13
Extended run time boiler circuit pump
HEAT GENER. PARAMETER 14
Activation second boiler circuit pump
HYDRAULIC PARAMETER 05
PARAMETER 06
PARAMETER 07
Assignment of second boiler sensor
HYDRAULIC PARAMETER 08
PARAMETER 09
PARAMETER 10