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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
If only the inverted signal is required (for a one-wire valve with inverted control logic),
inverted signal K¯8 can be assigned to the terminal with K8. In that case, K8 is re-
placed by K¯8.
The diagram shows the inverted solar heat exchanger diverting valve K¯8 as follows:
Example:
0
1
ZuFu 15
K8
0
1
K 8
4.35 Solar diverting valve K¯9 (ZuFu16)
•
Additional inverted signal for the control of a 2-wire valve
The signal for the control of solar diverting valve K9 can be inverted (K¯9) and as-
signed to a free relay terminal.
Setting range
Unit
Factory setting
--- / 101...110
K¯9
---
The auxiliary function will be activated as soon as diverting valve K¯9 is assigned a free
terminal:
101...110
The inverted signal for diverting valve
K¯9
can be assigned to a free
relay terminal between Q101 and Q110.
---
No assignment made and the auxiliary function is not activated.
For a valve with one-wire control, the only signal required is signal K9.
As soon as this valve is deenergized, the valve returns to the initial position.
For a valve with 2-wire control to change back to the initial position, a second inverted
signal (K¯9) is required.
If only the inverted signal is required (for a one-wire valve with inverted control logic),
inverted signal K¯9 can be assigned to the terminal with K9. In that case, K9 is re-
placed by K¯9.
The diagram shows the inverted solar diverting valve K¯9 as follows:
Example:
0
1
ZuFu 16
K9
0
1
K 9
Note
Application example
Benefit
Description
Setting
Assignment
Use
Note
Application example
