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Benefit
Description
Setting
Effect
With charging pump
With changeover valve
Siemens Building Technologies
Landis & Staefa Division
4.57 Controlling element for d.h.w.
Meeting the requirements of various plant configurations.
Selection of controlling element.
Setting range
0 / 1
The setting will produce different displays and allows to determine the plant diagram.
Since this has an impact on internal control sequences, the setting must be made
correctly.
Entry:
0
Charging pump: D.h.w. will be heated up with a charging pump connected to
terminal Q3/Y3
1
Diverting valve: D.h.w. will be heated up with a diverting valve connected to
terminal Q3/Y3
The charging pump operates as a function of the d.h.w. switching differential (setting
51
), depending on the current setpoints, which are activated by the d.h.w. program
OEM
(setting 121). Also refer to "plant diagram 1" in Index.
When using a charging pump, d.h.w. heating is also ensured in manual operation.
The diverting valve opens or closes as a function of the d.h.w. switching differential
(setting 51
), depending on the current setpoints, which are activated by the d.h.w.
OEM
program (setting 121). Also refer to "plant diagram 3" in Index.
D.h.w. heating is not possible in manual operation since the diverting valve used is not
controlled to provide space heating.
Basic Documentation RVA63.242, RVA53.242
Description of heating engineer settings
Unit
–
Factory setting
0
123/218
CE1P2373E
26.03.2001
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