5.3 Boiler
5.3.1 Modes
Boiler mode
System menu
Boiler
Modes
Boiler mode
Boiler mode
The current operation mode of the boiler is shown under
operating status:
▪ Continuous load: Default mode for systems without a
storage tank. The boiler produces constant heat and
tries to maintain its boiler temperature setpoint 24 hours
a day.
▪ Multi-sensor storage mode: For systems with storage
tank and multi-sensor management. Unlike storage tank
mode, the boiler is modulated in a defined output range,
depending on the storage tank charge. A start-stop
behaviour of the boiler can be reduced to a minimum.
▪ Storage mode: Default mode for systems with storage
tank and two-sensor management (top storage tank,
bottom storage tank). The boiler starts as soon as the
minimum temperature in the storage tank falls below
and produces heat in nominal load until the through-
loading criteria is reached.
▪ Cascade: To activate cascade mode. This mode is only
available if the boiler is set as the master or slave
boiler.
▪ Burner mode: This mode is only possible when a swivel
burner is available and the boiler is in the “Boiler OFF”
operating status. The burner is activated when heat is
required.
▪ Power test: This mode is used to test the boiler and is
only available from the “Installer” user level. The
settings for this mode can be found in the “Control
parameters” menu.
⇨ See "Control parameters" [page 56]
External boiler controller
System menu
Boiler
Modes
External boiler controller
Specify external output?
Determines whether the boiler output is controlled
externally.
Specification of external output above
Specifies how or with which external system the power
output is defined.
▪ Analogue input: The boiler temperature setpoint is
specified by a 0-10 V signal to an analogue input
▪ ModBus: The boiler temperature setpoint is specified by
an external control system to the modbus interface
▪ Manual: The manual value is used to specify the output
Menus and parameters
5
Boiler
Service manual SPS 4000 | B0960622_en
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Содержание SPS 4000
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