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Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E
HVAC Products Description of the heating engineer settings 15.07.2002
Heat generation values
4.19 Existing boilers
• Overview of the boilers used by the system
The function makes it possible to obtain a quick overview of the boilers used by the
system.
1. Press the operating line selection buttons to select line 75.
2. Press the + / - buttons to scroll through the list of available boilers.
Display Unit
00.1...16.3 -
The numbers have the following meaning:
00.1...16.3 Device address
and device subaddress (boiler number in a controller) of
the boilers assigned to the system (max. 16).
All boilers must be contained in segment 0 to ensure the demand for
heat from all segments will be considered.
Do not mix up device / device subaddress and segment / device address!
If the segment address was added, the display would read 0.00.1 ... 0.16.3.
A controller that uses device address 0
(e.g. 00.1) operates autonomously ( no
communication via LPB).
The device address 1
(01.1) defines the cascade master (controller).
Up to four BMUs can be connected to the first RVA47.320 (B-series) of a cascade, and
up to three BMUs to each of the additional RVA47.320 (B-series).
The possible device subaddresses are therefore 1.1 ... 1.4, 2.1 ... 2.3, 3.1 ... 3.3
through 16.3 One cascade can contain a maximum of 16 boilers, however.
For more detailed information, refer to ”Local Process Bus (LPB), Basic
Documentation, System Engineering” (document no. CE1P2370E).
4.20 Display lead boiler
• Quick overview of current lead boiler
With ”Automatic lead boiler changeover”, this function facilitates quick identification of
the current lead boiler.
When selecting this operating line, the current lead boiler is displayed. No settings can
be made with the + / – buttons.
Display Unit
00.1...16.3 -
The numbers have the following meaning:
Benefit
Description
Setting
Caution!
Device address
Device subaddress
Benefit
Description
Display
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