105/126
Siemens Building Technologies Basic documentation RVD240 CE1P2384en
HVAC Products 31 Handling 27.05.2004
The operating instructions are inserted in a holder at the rear of the cover.
The operating instructions are designed for use by janitors and end-users. They also
contain energy savings tips and information about the rectification of faults.
31.1.2 Analog operating elements
For the selection of the operating mode, the following buttons are provided:
• 3 buttons for selecting the heating circuit’s operating mode
• 1 button for d.h.w. heating
The required operating mode is activated by pressing the respective button. Each but-
ton has an LED integrated; the currently active operating mode is indicated by the re-
spective LED.
To make the heating circuit-specific settings or readings, this button must be pressed to
select the required heating circuit. The active heating circuit is indicated by an LED. If
both heating circuits are active, both LEDs are lit.
The 2 knobs are used for manual readjustments of the nominal room temperature set-
point of each heating circuit. Their scales give the room temperature in °C.
When turning the knobs, the heating curve is displaced parallel.
A button is available for activating manual operation. An LED indicates manual opera-
tion; at the same time, the LEDs in the operating mode buttons extinguish. Manual op-
eration is quit by pressing the same button again or by pressing any of the operating
mode buttons
31.1.3 Digital operating elements
The entry and readjustment of all setting parameters, the activation of optional func-
tions 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 is always made with
a pair of buttons.
To select and readjust setting values, the procedure is the following:
Buttons Procedure
Impact
Press button Selection of the next lower operating line Line selection
buttons
Press button
Selection of the next higher operating line
Press button Decrease of the displayed value Setting buttons
Press button
Increase of the displayed value
The value set will be adopted
• when selecting the next operating line, that is, by pressing line selection button
or
• by pressing any of the operating mode buttons
adopted. If the entry of --.- or --:-- is required, button
or must be pressed until the
required display appears. Then, the display maintains --.- or --:-- .
The operating lines are grouped as blocks. To quickly select an individual operating line
in a block, the other lines can be skipped. This is accomplished by using two combina-
tions of buttons:
Operating instructions
Buttons and display for
selecting the operating
mode
Button for switching
between the heating
circuits
Knob for room tempera-
ture readjustments
Buttons and displays for
manual operation
Operating line principle
Buttons
Block skip function
To Next Page
Loading...
