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INSTALLATION (FOR ENGINEERS ONLY)
4.2.4 Installation for cylinder selection function
The "cylinder selection" function in a solar heating system requires a valve that directs the flow to the
cylinders according to the switching conditions and cylinder priority (
R1
3
Fig. 9
Valve for cylinder selection
1
Solar system cylinder
2
Cylinder C
3
TDS 300solar heating programmer
B Fit 3-way motorised valve in the flow pipe of the solar system according to the table below.
Mark
I
II
III
Tab. 5
Connection markings on valve.
16
1
DWUC
6720613732-10.1 SD
Connection
From collector array (flow)
To cylinder C
To solar system cylinder
2
6 720 644 593 (2010/04)
Section 9.5.18, page 68).
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