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Siemens Building Technologies Basic Documentation RVA63.242, RVA53.242 CE1P2373E
Landis & Staefa Division Description of heating engineer settings 26.03.2001
4.78.1 Changeover of operating mode
(Setting 0/1)
A remote telephone switch is a potential-free relay contact, e.g. in the form of a modem,
which can be switched by making a phone call plus dialing a code.
The operating modes of heating circuit and d.h.w. change when the contact connected
to terminal H1 (e.g. a remote telephone switch) closes. In that case, the LEDs in the
operating mode buttons and will flash.
Whether or not d.h.w. heating can take place when the remote telephone switch is
activated depends on the following setting:
Setting 0: D.h.w. heating is locked when changeover is activated.
Setting 1: D.h.w. heating remains released when changeover is activated.
Depending on the type of unit to which operating mode changeover in a heating system
is connected, an activation produces different changeover statuses:
Changeover of all controllers in the system (line 145 = 1)
Prerequisite:
The contact must be connected to the master controller in
segment 0
Possible address: Device address 1 (line 140)
Segment address 0 (line 141)
Effect: − All controllers in the system switch to operating mode
− With setting 0, d.h.w. heating is switched off in the entire system;
with setting 1, it is released in the entire system
− With all controllers, operating mode changeover with the buttons is
no longer possible
− When the contact of the remote telephone switch opens, all
controllers will return to the operating mode selected last
Check Buttons or + flash on all controllers in the system
1)
1)
With setting 0 as selected above (d.h.w. heating locked), the 2 buttons and will
flash.
With setting 1 as selected above (d.h.w. heating remains released), only operating
mode button will flash.
Changeover of all controllers in the same segment (line 145 = 0)
Prerequisite: The contact must be connected to the master controller in segments 0
to 14
Possible address: Device address 1 (line 140)
Segment address 0...14 (line 141)
Effect: − All controllers in the same segment switch to operating mode
− With setting 0, d.h.w. heating is switched off in the entire segment;
with setting 1, it is released in the entire segment
− With all controllers in the same segment, operating mode
changeover with the buttons is no longer possible
− When the contact of the remote telephone switch opens, all
controllers will return to the operating mode selected last
Check
Buttons or + flash on all controllers in the same segment
1)
D.h.w.
Effect on the system
Changeover of system
Changeover of segment
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