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Benefit
Description
Setting
Assignment
Use
Effect
Alternative operation
Parallel operation
116/348
Siemens Building Technologies
HVAC Products
4.41 Solar swimming pool heating K18 / K¯18 /
B13 (ZuFu28)
• Swimming pool heating with solar energy
Solar collectors are used to provide ecological swimming pool heating.
Setting range
--- / 101...110
--- / 101...110
--- / 101...109
The auxiliary function will be activated as soon as one of the 2 relays and the sensor of
solar swimming pool heating (K18 / B13) is assigned a free terminal:
Operating line 175 (relay assignment):
101...110
Diverting valve K18 can be assigned to a free relay terminal between
Q101 and Q110.
---
No assignment made.
Operating line 176 (relay assignment for the inverted signal):
101...110
The inverted signal for diverting valve K¯18 can be assigned to a free
relay terminal between Q101 and Q110.
---
No assignment made.
Operating line 177 (sensor assignment):
101...109
Temperature sensor B13 for the solar swimming pool heating can be
assigned to a free sensor terminal between B101 and B109.
---
No assignment has been made and the auxiliary function is not acti-
vated.
For a valve with one-wire control, the only signal required is signal K18.
As soon as the signal is no longer present, the valve will change over to its initial
position.
For a valve with 2-wire control to change over to the initial position, a second inverted
signal (K¯18) is required.
Solar swimming pool heating can be operated either alternatively or parallel to the
storage tanks (buffer, d.h.w. and combi storage tank) (setting to be made on operating
line 322).
The heat exchanger for solar swimming pool heating will be connected via a diverting
valve. The diverting valve must be placed either upstream of the solar heat exchanger
diverting valve (K8) – if present - or downstream from the solar diverting valve (K9).
The heat exchanger for solar swimming pool heating will be connected via a circulating
pump. Integration of swimming pool heating is to be made upstream of the diverting
valve (K8, K9) – if present – and upstream of the heat exchanger.
Parallel operation is not possible with solar collector partial diagrams Sol3, Sol8 and
Sol12 through 16.
Basic Documentation RVP540 / RVP550
Description of the heating engineer settings
Unit
Factory setting
K18
---
K¯18
---
B13
---
CE1P2488en
18.10.2002
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