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Note

We expressly point out that the VT51 ready-to-use heat transfer fluid or a heat transfer

fluid tested by us must be used in order to ensure long-term safe operation.

5. Expansion tank - dimensioning

for the correct dimensioning of the expansion vessel we recommend our easy system

planner (akotec.eu/english/easy-system-planner).

6. Storage

should be dimensioned between 50 l/m² and 70 l/m² gross collector area.

7. Controller

if no AKOTEC controller is used: the alternatively selected solar controller must have

a vacuum tube collector function

8. Insulation

complete and suff icient insulation of the solar lines is mandatory

9. Lightning strike

The collector array must be grounded against lightning in accordance with applicable

grounded in accordance with applicable regulations.

10. Air pot

The air pot must always be mounted at the highest point as well as at the flow.

Maintenance instructions

The antif reeze content of the heat transfer fluid & the

safety devices (safety valve and MAG) must be checked annually! A regular function

check of the control and the electrical components is required!

Note for the Weiser Protect 800, 1600 and 2400

The Weiser Protect without reflector also has absorbing vacuum tubes on the back.

The yield of the collectors can be increased by a reflective background on site, e.g. a

light-colored wall or reflective roof ing. reflective roof ing, the yield of the collectors can

be increased.

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