SolaSmart™ Plus Installation Guide
Version 1.1 – Mar 2012 Page 17
ABOUT THE PUMP SETTINGS, CONTINUED
Advanced
TopOut
Function
The Topout temperature is the maximum temperature that you will allow in
the cylinder. Very high temperatures in the cylinder can cause damage
(especially for ceramic lined tanks) – both from heat, and from high
pressures on plumbing fittings.
This function is designed to stop hotter water from the collector entering the
cylinder if the temperature is already high – until the water in the cylinder has
cooled down to a safe level.
Senztek has also developed an advanced Topout method that delays the
onset of collector stagnation and facilitates early recovery if stagnation has
occurred.
This is achieved by using a three stage Topout where the tank is protected at
all times and the solar pumping control method is altered progressively.
If stagnation has occurred and the hot water tank is no longer at maximum
then recovery is achieved by pulsing water through the collector, dissipating
heat in the pipes such that steam should not be present when the water re-
enters the tank and thus avoiding steam implosions (loud banging noises in
tank).
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