Siemens RVA63.242 User Manual page 105

Parameter KON:
Siemens Building Technologies
Landis & Staefa Division
4.43.2 Without room influence
The composite outside temperature is used as the compensating variable. In the case
of floor heating systems, the maximum forward shift should be longer than with radiator
systems.
Using the parameter for the constant of quick setback and optimum start control (KON),
the forward shift can be matched the building dynamics.
Forward shift tE in hours and minutes with optimum start control without room
influence:
TAgem KON
0
-20 0
-10 0
0 0
+10 0
tE
TAgem Composite outside temperature
tE Forward shift
KON Parameter for quick setback and optimum start control without room influence
KON = 0:
Small KON:
Large KON:
4.43.3 With room influence
Optimum start control acts only when room influence is active.
The switch-on time for the heating (change to nominal level) is selected such that, at
the beginning of the occupancy time according to the heating program, the room
temperature reached will be the room temperature setpoint - 0.25 K.
The correct switch-on time is determined by adaption.
Basic Documentation RVA63.242, RVA53.242
Description of heating engineer settings
4 8
1h20 2h40
0h50 1h50
0h30 1h00
0 0h10
Function deactivated
Note: KON also acts on quick setback
For light building structures that can be heated up fairly
quickly
For heavy, well insulated building structures whose heating
up time is fairly long
12 16 20
4h00 5h20 6h00
2h40 3h40 4h30
1h30 2h00 2h30
0h10 0h20 0h20
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CE1P2373E
26.03.2001