Maintenance - Bosch TSS Manual

▶ Remove the thermostat from the heating resistance ( Fig. 9).
▶ Screw the heating resistance on ( Fig. 10).
▶ Insert the thermostat ( Fig. 11).
▶ Pass the electric cable through the sealing gland ( Fig. 12).
▶ Connect the cable to the power supply at thermostat ( Fig. 13).
▶ Plug the ground wire from the immersion heater and from the power
supply into the clamp spring and fix it ( Fig. 13).
NOTICE:
The electrical cable is not provided with the device. The
cable should be acquired by the qualified technician. The
electrical cable should be appropriate for this type of
installation, namely with regard to the intensity of the
electric current, voltage, resistance to outdoor
environments and length.
NOTICE:
All the sections of the electrical cable should be protected
from the outdoor environment. Therefore, it is convenient
to protect them with a plastic tube or other waterproof
material.
▶ Attach the strain relief ( Fig. 14).
▶ Adjust the thermostat to the desired temperature at which the
heating resistance is switched off ( Fig. 15, [10]).
The maximum adjustable temperature is 70 °C. The
recommended position is at 50 °C, which corresponds to
the position of the pointer as shown in Fig. 15.
▶ Proceed in filling the deposit with cold water from the water network,
as indicated in the thermosyphon installation instructions.
▶ Switch on the breaker.
▶ After 4 hours check for leaks.
▶ Tighten the maintenance cap again ( Fig. 16).
▶ Glue on the rating plate of the heating resistance provided with the
equipment ( Fig. 17).
DANGER:
Scalding RiskBy touching the heating resistance. When
removing the resistance a significant volume of hot water
will escape from the deposit.
3.2 Energy saving
In order to minimize the consumption of electrical energy, the user may:
• using the breaker, manually, switch the heating resistance on or off,
taking into account if the period is of low or high solar radiation;
• acquire a programmable watch which temporarily controls the power
supply to the heating resistance. It is important to take into account
that such energy saving measures may lead to a lack of hot water.
TSS – 6 720 820 740 (2018/01)
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Maintenance

Inspection of the electrical connections and of the heating
resistance and thermostat set by a specialised technician is
strongly recommended, at maximum intervals of 2 years.
Make sure that the electric power capacity in the house is
sufficient for the correct operation of the heating resistance
together with the other household appliances already in use.
Every winter, increase the temperature of the water to
70 °C, for a period of 6 hours, to eliminate bacteria which
might have started to develop.
The safety purge valve should be periodically bled to remove
metal filing deposits or other types of dirt and check if the
purge valve is not obstructed.
Restarting the resistance
Check the need to restart the heating system.
▶ Press the restart pin on the safety thermostat ( Fig. 15, [9]).
Draining the deposit
Be aware that there is scalding risk and that the roof top
might be slipepry.
▶ Switch off the electrical resistance by using the breaker.
▶ Close the water flow.
▶ Open a hot water tap.
▶ Open the safety valve purge.
Maintenance
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