CE1P2522E / 30.03.2000
Basic Documentation RVL470
Siemens Building Technologies
62/68
Handling
Landis & Staefa Division
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Two buttons for manual positioning commands. In plants using slipper or seat valves,
the regulating unit can be driven to any position by pressing the respective button.
In plants with direct burner control, burner stage 2 can be switched on and off by
pressing button
.
When pressing a button, the associated LED is lit
19.1.2.5. Display of positioning commands
The LEDs next to the symbols for the heating circuit's mixing valve indicate the positioning
commands:
= mixing valve in heating circuit fully OPEN or first burner stage ON
= mixing valve in heating circuit fully CLOSED or second burner stage ON
19.1.2.6. Display "Heating operates"
The LED beside the pump symbol is lit whenever the heating circuit pump/circulating
pump M1 runs, that is, whenever the heating operates.
19.1.3. Digital operating elements
19.1.3.1. Operating line principle
The entry and readjustment of all setting parameters, the activation of optional functions
and the reading of actual values and statuses are based on the operating line principle.
An operating line with an associated number is assigned to each parameter, each actual
value and each optional function. The selection of an operating line and readjustment of
the display are always made with a pair of buttons.
19.1.3.2. Buttons
To select and readjust setting values, the procedure is the following:
Buttons
Procedure
Effekt
Line selection
Press button
Selection of the next lower operating line
buttons:
Press button
Selection of the next higher operating line
Setting buttons:
Press button
Decrease of displayed value
Press button
Increase of displayed value
The value set will be adopted
•
when selecting the next operating line, that is, by pressing button
or
•
by pressing the Info button
•
by pressing any of the operating mode buttons
If the entry of --.- or --:-- is required, button
or
must be pressed until the
required display appears. Then, the display maintains --.-.
19.1.3.3. Block skip function
The operating lines are grouped as blocks. To reach a specific operating line of a block
quickly, the other blocks can be skipped, so it is not necessary to select all the other
lines one by one. This is accomplished by using two combinations of buttons:
Procedure
Effect
Keep button
depressed and press
Selection of the next higher block:
keep button
Keep button
depressed and press
Selection of the next lower block:
keep button