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Building Technologies
Boiler sequence controller RMK770
CE1P3132en
HVAC Products
3 Commissioning
23.04.2009
3 Commissioning
Preparation for use and commissioning of Synco™ 700 controllers must be undertaken by
qualified staff who have been appropriately trained by Siemens Building Technologies.
3.1 Basic
concept
Using the RMK770 controller, boiler sequencing can include up to 6 boilers. When
selecting a plant type, boiler sequencing with 2 boilers is predefined. Boiler hydraulics
and the type of burner selected with the plant type in the basic configuration always
apply to both boilers. Any adaptations in terms of boiler hydraulics and type of burner
can subsequently be made in the extra configuration. By selecting a plant type that is
very similar to the actual plant, adaptations can be kept to a minimum. But it is also
possible to start with basic type K and then add all plant elements in the extra configu-
ration.
The boilers predefined with the plant type are assigned to boiler 1 and boiler 2. They
are also given boiler addresses 1 and 2 on the KNX bus. Further, by selecting the plant
type, the common main flow and main return temperature sensors are predefined.
If additional boilers need to be configured, this is to be made via the
Extra configuration
menu. For additional boilers, each plant element (burner stages, boiler sensor, etc.)
must be configured separately.
When a second RMK770 controller is used with the third boiler, the start must be made
on the second RMK770 with basic type K. The plant components must now be as-
signed to boiler 3. On the RMK770 with boilers 1 and 2, the number of boilers must be
increased to 3 via the
Settings > Boiler sequence manager
menu. As a result, boiler 3 is
automatically included as a boiler of the boiler sequence, to be displayed on the first
RMK770 controller in the overview on the information level.
Boiler sequence with 3 boilers, each equipped with a 1-stage burner.
T
T
T
T
31
32
S
4
1
T
First, select plant type K5.1 because it corresponds to the required boiler hydraulics
and the types of burner (refer to subsection 3.3.1 “Plant types”).
Example
