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How the Powerstream Pro works
Water comes in through the inlet tube.
The flow switch senses water has passed
through the unit. If it detects more than the pre-
set level, the units heating the elements switch
on. This is shown by the neon light glowing.
The water is heated instantly as it passes through
the copper heat exchanger tube.
The unit is Thermostatic i.e. it will switch the
elements on and off in order to maintain a
constant outlet temperature.
The temperature of the water conning out of the
unit depends on:-
• The voltage of the electrical supply,
• The temperature of the incoming water.
• The setting of the temperature dial.
A badly set flow rate can also have a negative
effect on the temperature.
Depending on the region of the country, the
temperature of the water supply can vary from
40°F in winter to about 70°F in the summer, with
an average of about 50°F. Extreme weather
conditions can cause the inlet temperature to go
outside these boundaries, making it necessary to
adjust the Temperature Adjustment Spindle and /
or the inlet water flow.
The unit has one double pole thermal cut out
which is mounted on the heat exchanger tube.
When tripped the cut out needs to be reset
manually inside the unit.
The cut-out will trip only in exceptional
circumstances (Diagram 7.) Call your service
person or Bosch Water Heating if this happens
frequently.
WARNING -
Always switch off the electrical supply to the
unit before you remove the cover.
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