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D.h.w.
Effect on the system
Changeover of system
Changeover of segment
Siemens Building Technologies
Landis & Staefa Division
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
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)
The contact must be connected to the master controller in
Prerequisite:
segment 0
Possible address:
−
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
1)
With setting 0 as selected above (d.h.w. heating locked), the 2 buttons
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:
−
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
Basic Documentation RVA63.242, RVA53.242
Description of heating engineer settings
and
will flash.
Device address 1
Segment address 0 (line 141)
or
+
flash on all controllers in the system
Device address 1
Segment address 0...14 (line 141)
or +
flash on all controllers in the same segment
(line 140)
1)
and
will
(line 140)
1)
141/218
CE1P2373E
26.03.2001
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