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Device's solar heat exchanger is intended for use with circulating clean water and mixture of it and
Propylene Glycol at liquid state. The presence of anticorrosion additives is obligatory. Using different
fluids in different states leads to warranty violation!
Only qualified persons should design and install solar loop with all elements according to the Fig. 8!
Flow switch: After the pump is running for 30 sec, if the water flow switch signal is checked to OFF for
5 sec, the pump stops. The pump will restart after 3 min. If this malfunction occurs 3 times in 30 min,
the pump cannot start until the unit is re-powered. The relating error code will be shown on the
controller. Only the pump will be stopped but not the unit itself.
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