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Siemens Building Technologies
Basic Documentation QAA73.110 Room unit
CE1P2284en
HVAC Products
Description
of the heating engineer settings
10.07.2002
Space heating
4.12 Heating curve slope
The room unit generates the flow temperature setpoint based on the selected heating
curve.
The result is a constant room temperature irrespective of outside temperature
variations.
1. Press the line selection buttons to select line
70
(for HC1) or line
80
(for HC2).
2. Press the + / – buttons to select the heating curve slope or --.-
Setting range
Unit
Factory setting
--.- / 2.5 ... 40.0
Increment
15.0
By changing the setting, the slope of the heating curve will be increased or decreased
with the following effects:
Increase:
The flow temperature will be
raised
when the outside temperature
drops
Decrease:
The flow temperature will be
raised less
when the outside
temperature drops
The following settings produce the following effects:
2.5 ... 40.0
The room unit delivers a weather-compensated flow temperature for
the respective heating circuit.
– – . –
The relevant heating circuit is deactivated.
•
HC1 can be deactivated only if HC2 is also deactivated or does not exist
•
Line 80 is visible only if a second heating circuit exists and if it is supported by boiler
control
20
10
0
-10
-20
-30
90
80
70
60
50
40
30
°C
°C
40
35
30
27,5
25
22,5
20
17,5
15
12,5
10
7,5
5
2,5
100
20
00
D07
TA
TV
Heating circuit diagram
TV
Flow temperature
TA
Composite outside temperature
Description
Line 70 for HC 1
Line 80 for HC 2
Effect
Note