Heating Curve; Hours Run Counter - Siemens RVL481 Basic Documentation

Generation of the flow
temperature setpoint
Display of heating
curve data
Siemens
Building Technologies

Heating curve

T
V
T
AM
T
VS
Setting knob
on controller
s Slope
T Composite outside temperature
AM
T Flow temperature setpoint (generated via the heating curve)
VS
TVw Flow temperature setpoint
25.2.2 Heating curve
The display shows the resulting heating curve which is composed of the following vari-
ables:
•
Basic setting with the little bar or on operating lines 14 and 15
•
Position of the knob for room temperature readjustments
•
Parallel displacement (setting on operating line 72)
The display also shows the 2 flow temperature setpoints:
•
TV1; current setpoint at an outside temperature of +15 °C
•
TV2; current setpoint at an outside temperature of
With demand-compensated control (plant types 4–x, 5–x, and 6–x), the display shows
--- --- .
Heating curve
T
V
TV2
S
TV1
S
+15 °C
-5 °C T
Setting knob
on controller
s Slope
TV1 Actual flow temperature setpoint at +15 °C
TV2 Actual flow temperature setpoint at
TV... Flow temperature setpoint (generated via the heating curve)
S

25.2.3 Hours run counter

The number of controller operating hours is displayed. Whenever operating voltage is
present, the RVL481 counts the hours.
The maximum reading is limited to 500,000 hours (57 years).
Heating and D.h.w. Controller RVL481
25 Function block "Service functions and general settings"
Parallel displacement of heating
curve, operating line 72
1 + s
T
T
VS Vw
s
T
AM
1 + s
Parallel displacement of heating
curve, operating line 72
1 + s
TV1
, TV2 TV1, TV2
S S
AM
1 + s
−
5 °C
Flow temperature setpoint,
operating line 165
−
5 °C
TV1, TV2
operating line 166
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CE1P2541en
20.05.2008