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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.227 Number of d.h.w. charging cycles
•
Choice of one or several d.h.w. charging cycles
•
Forward shift of release matched to the number of d.h.w. charging cycles
With this setting, d.h.w. heating can be reduced to one charging cycle per day. The
forward shift of d.h.w. heating against the range selected on operating line 773 will be
appropriately adjusted.
This setting is effective only if, on operating line 771, setting 1 (according to the heating
circuit time switch program(s)) has been selected.
Setting range
Unit
Factory setting
0...1 –
1
According to the selection made, the controller releases d.h.w. heating either once or
several times per day and adjusts the forward shift accordingly.
Setting
Charging / day
Forward shift
0 One
2.5
hours
1 Several
1
hour
4.227.1 Once per day with a forward shift of 2.5 hours
Setting 0
The number of daily releases for d.h.w. heating at the nominal temperature setpoint is
limited to one. Also, with this setting, the switch-on point is shifted forward by 2.5 hours
against the range selected on operating line 773.
On days where space heating at the nominal room temperature setpoint is provided for
24 hours, d.h.w. heating is released at midnight for 2.5 hours.
4.227.2 Several times per day with a forward shift of 1 hour
Setting 1
The number of d.h.w. charging cycles will not be limited. Also, with this setting, the
switch-on point is shifted forward by one hour against the range selected on operating
line 773.
Benefit
Description
Note
Setting
Effect