EbV Product documentation THETA NORM/UNIT
10-8
Example for switching sequence:
In some cases, it might be better to have the peak load boilers take over the basic
load if they are necessary. This is possible by parameterization.
10.3.7 Behavior during heat generator fault
• If a heat generator is not available in the system (error, external blockage or outdoor temperature
lock), it is skipped in the stage control and the next available heat generator is controlled.
10.3.8 Behavior for special functions
Manual operation: The heating circuits of the control device in which manual operation was activated,
operate according to the MANUAL function. The set request value is forwarded to the
energy management module of cascade control, and adjusted by the available boiler
stages.
Emission
measurement: This function works as described under "Emission measurement", with the following
extensions:
• The effect on heating circuits is extended to all heating circuits of the system.
• Enabling of the heat generators (burner) is initiated at the same devices where
emission measurement was activated.
SLT: This function works as described under "SLT check", with the following extension:
As soon as an SLT function is detected within the BUS system, all consumers
(heating circuits) are inhibited.
Heat generator for basic load
H-GEN 1
H-GEN 2
H-GEN 3
H-GEN 4
H-GEN 5
Heat generator for peak load
5
5
5
2
2
1
1
4
4
4
3
2
1
3
5
4
5
3
1
2
1
3
2
4
3
Sequence
Sequence
Sequence
Sequence
Group switch ñ basic load is taken over by peak load heat generators:
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