Setting The Pump Running-On Time - A.O. Smith GWV - 120 Installation And Service Manual

is
The appliance switches from partial load to full load if
the temperature difference between the water in the
storage tank (T ) and the set point (T
3
negative hysteresis is greater than this stage
difference. Conversely, the apparatus switches from
full load to partial load if this temperature difference is
smaller than the stage difference.
The stage difference can be adjusted between 2°C
and 8°C. The default stage difference is 5°C.
You can set the stage difference using:
• : STAGE DIFFERENCE
The figure shows an example.
STAGE DIFFERENCE
» 5ÉC

12.12 Setting the pump running-on time

Once the heat demand has been met, the heating
cycle stops but the pump continues to run for a short
time. The run-on time can be set to 45, 90 or 180
seconds. The default setting is 45 seconds. You can
set the run-on time using:
• : PUMP POST PURGE
The figure shows an example.
PUMP POST PURGE
» 45 sec
90
180
Instruction manual GWV
) minus the
set
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