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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.218 Speed reduction of the heating circuit pump
•
The type of speed reduction of the heating circuit pump can be selected
The speed of the heating circuit pump can be reduced based on the operational level of
the heating circuit or based on the characteristic.
Setting range
Unit
Factory setting
0 / 1
–
1
The speed of the heating circuit pump is reduced depending on the selection made.
0
Changeover according to the heating circuit’s operational level
At the operational level “Nominal”, the pump operates at maximum speed (oper-
ating line 742); at the operational level “Reduced”, the pump operates at mini-
mum speed (operating line 741).
1
Changeover according to the characteristic
The speed is controlled based on the flow and the outside temperature. The
change from minimum speed (operating line 471) to maximum speed (operating
line 472) takes place when the maximum flow temperature is not able to cover
the demand for heat
For details, refer to the description of the differential of flow and return tempera-
ture in chapter 6.
Diagnosis
4.219 Functional test of the heating circuit
•
Individual relays or combinations of relays can be controlled for test purposes
The functional test makes possible the control of individual relays or relay combinations
in order to check the functionality.
Setting range
Unit
Factory setting
--- / 0...3
–
–
Press the + / – buttons to activate the required test step:
--- No
test
0 Everything
OFF
1
Heating circuit pump (Q2) ON
2
In addition, mixing valve CLOSED (Q2 + Y2)
3
In addition, mixing valve OPEN (Q2 + Y1)
Benefit
Description
Setting
Effect
Benefit
Description
Setting
Effect
