258/348
Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.249 Automatic summer / winter changeover
•
Makes possible a uniform changeover of all heating circuits in the selected range of
action
Definition of action of automatic summer / winter changeover.
Summer / winter changeover of the selected range of action takes place when the
changeover temperature set on operating line 29 is reached.
Setting range
Unit
Factory setting
0 / 1
–
0
The setting will change the effect of summer / winter changeover:
Entry:
0 Local
effect
Automatic summer / winter changeover switches the local heating circuit on and
off.
1 Central
effect
Either the heating circuits of the segment or those of the entire system are
switched on and off by automatic summer / winter changeover, depending on the
selection made on operating line “Range of action of central changeover” (oper-
ating line 855).
4.250 Central standby switch
•
Central operation of the interconnected system
Centrally from the RVP540 / RVP550, the entire heating system can be switched to
standby.
Setting range
Unit
Factory setting
0 / 1
–
0
Entry:
0
Central standby switching is deactivated
1
Central standby switching is activated
Either the heating circuits of the segment or those of the entire system are
switched on and off by automatic summer / winter changeover, depending on the
setting made on operating line “Range of action of central changeover (operating
line 855).
The central standby circuit does not affect d.h.w. heating. This means that the d.h.w. is
heated according to the settings made.
If the function is activated from the controller, the operating mode buttons of all af-
fected controllers in the segment or system will flash.
Benefit
Description
Setting
Effect
Benefit
Description
Setting
Effect
D.h.w.
Display
