Table of Contents
Advertisement
Description
Setting
Effect
Boiler temperature
control
Siemens Building Technologies
Landis & Staefa Division
Heat generating equipment
4.27 Type of heat source
This controller supports different types of heat sources. The type of burner used is to be
considered when planning the heating plant.
Setting range
0...5
Entry:
0
No heat source (zone controller) or BMU
1
Single-stage: The heat source is equipped with a single-stage burner
2
2-stage: The heat source is equipped with a 2-stage burner
3
Modulating burner 3-position air damper actuator
The air damper actuator is controlled in PID mode
4
Modulating burner 2-position air damper actuator
Continuous on / off control of air damper actuator
5
Cascade with 2 single-stage burners
4.27.1 No heat generation or BMU
If the controller is used in combination with a BMU, only a certain part of the heat
source functions are active, such as protective boiler start-up. In that case, boiler
temperature control by the burner must be fully ensured by the BMU.
If no BMU is connected, the heat source functions are no longer active.
4.27.2 Multi-stage burners
Generation of the boiler temperature setpoint is accomplished based on maximum
selection. Also refer to "generation of boiler temperature setpoint" in Index.
With multi-stage burners, the basic load is covered by cycling the first stage. For that
purpose, the boiler's switching differential can be adjusted.
The second stage is activated and deactivated via the release and reset integral, which
is used until full load is reached.
For burner control, minimum limitation of the burner running time is considered to
ensure no unnecessary cycling takes place in part load operation.
Basic Documentation RVA63.242, RVA53.242
Description of heating engineer settings
Unit
Increment
Factory setting
1
83/218
CE1P2373E
26.03.2001
Hide quick links:
Advertisement
Table of Contents
