Bosch Compress 3000 DW FI Series, Installation And Operating Instructions Manual

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6 720 809 134 (2013/09) Compress 3000 DW FII
8 | About the appliance
3.7 Wiring diagram
Fig. 5
[1] NTC temperature sensor for air inlet
[2] Flow NTC temperature sensor
[3] NTC temperature sensor in water inlet
[4] Power cable
[5] High Pressure Switch
[6] Electrical capacitor for compressor
[7] Compressor
[8] High limit safety cut-out for compressor
[9] Circulation pump
[10] Fan
[11] Resistor
[12] Resistor for high-limit safety cut-out
[13] Electronics box
[14] NTC temperature sensor (evaporator plates)
[15] Electrical capacitor for fan start
[16] Electrical capacitor for fan speed
3.8 Safety, control and protection devices
3.8.1 High Pressure Switch
If the operating pressure is outside of the recommended range,
the pressure switch switches off the appliance and displays a
fault (

chapter 11, page 28).
3.8.2 High limit safety cut-out
The high limit safety cut-out ensures that the water
temperature in the cylinder does not exceed the prescribed
limit. If the temperature limit is exceeded, the DHW heating
shuts down. The reset is performed manually by a certified
contractor.
3.8.3 Temperature sensor for air inlet
The temperature sensor measures the temperature of the inlet
air in the evaporator. If the measured value is outside the
operating temperature range, DHW heating automatically
switches from the "Combi" operating mode to "Electric booster
heater". If the appliance is in the "Heat pump" operating mode,
DHW heating is interrupted until the temperature returns to
within the permissible range.
3.9 Corrosion protection
The internal wall of the DHW cylinder is glass-lined (double
coating), making it neutral when in contact with water and
therefore suitable for potable water.
As an additional corrosion protection measure, the cylinder is
equipped with a magnesium anode. This must be inspected at
regular intervals and replaced if necessary.
In regions with more corrosive water, safety measures (filter,
etc.) must be taken, and the magnesium anode must be
serviced more frequently.
The first inspection must take place 6
months after installation.