SolaStat™-1-3 Installation Guide
Version 1.1 – April 2013 Page 17
ABOUT THE PUMP SETTINGS, CONTINUED
Adjusting the
Setting
If you increase the PUMP ON value, the solar heater will heat up more
before the heat is transferred to your hot water tank.
Hotter water will enter your tank, but it may take longer to heat the water to
that level; or on dull days, the temperature difference will not be enough to
activate the pump (and the energy in the water within the collector will be
lost).
If you increase the PUMP OFF value, then the difference in the temperature
of the water coming from the solar collector compared with the tank is greater
when the pump turns off (the water entering the tank will be hotter than the
water already in the tank).
This will reduce heat losses in pipes, but less energy may be transferred.
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