Bosch TSS Series Installation And Maintenance Instructions Manual page 30

Maintenance, Inspection
Visually checking the magnesium anode and cleaning the storage
tank
▶ Close the shut-off valves and isolate the immersion heater (if used)
from the mains power supply.
▶ Drain the DHW cylinder.
▶ Remove the storage tank cover.
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Fig. 82 Removing the storage tank cover
▶ Remove the access port with magnesium anode.
Fig. 83 Removing the handhole cover
▶ Check the magnesium anode and install a new one if necessary.
▶ Replace the magnesium anode if the diameter is less than 15 mm.
▶ Check the transfer resistance between the protective conductor
connection and the magnesium anode.
▶ Reseal the magnesium anode.
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▶ Hose down the inside of the DHW cylinder.
Fig. 84 Hosing down the inside of the storage tank
▶ Use a wet/dry vacuum to remove any residue.
If an immersion heater is installed:
▶ When installing, turn the handhole cover until the immersion heater
is pointing downwards.
Fig. 85 Immersion heater pointing downwards
Hand-tighten the hexagon bolts on the handhole cover.
Then retighten with a ¾turn.
▶ Close the inspection aperture.
▶ Re-commission the DHW cylinder.
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TSS – 6720887696 (2018/05)