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Siemens Basic Documentation RVP340, RVP350, RVP351 CE1P2545en
Building Technologies 17 Function block: Service functions and general settings 15.03.2011
17.4.2 Manual overriding of operating mode (contact H1)
Using a simple remote control, the operating mode of the heating circuit and that of
d.h.w. can be overridden. This is accomplished by bridging terminals H1M.
The operating mode that shall rule when H1M are bridged can be selected on
operating line 172:
Setting Operating mode of
heating circuit
Operating mode of
d.h.w. circuit
0
Protection mode OFF
1
AUTO OFF
2
REDUCED OFF
3
NORMAL OFF
4
Protection mode
ON
5
AUTO
ON
6
REDUCED
ON
7
NORMAL
ON
8
AUTO
ON (24 hours a day)
9
NORMAL
ON (24 hours a day)
In the case of controllers without d.h.w. heating (plant types x - 0), 0…3 are the
only possible settings.
As long as this function is active, the LED of the respective operating mode button
flashes at a low frequency (approx. 0.5 Hz). The buttons themselves are inoperable
however.
When the function is deactivated, the controller resumes the previously selected
operating mode.
17.4.3 Pump overrun
To prevent heat from building up, a common pump overrun time can be set on
operating line 174 for all pumps associated with the controller (with the exception
of the circulating pump). So, upon deactivation, the pumps continue to run for the
set overrun time.
D.h.w. discharging protection has priority over the pump overrun function.
In interconnected plants, the set time also affects the forced signals that a boiler
can deliver to ensure overtemperature protection.
For more detailed information, refer to chapter 11.4.5 "Protection against boiler
overtemp
eratures".
76


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