Bosch TRONIC 6100 C - Descaling the Heating Element

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Installation Manual
Bosch Tronic 6100 C Electric Tankless Water Heaters- BTC 724001301 A (08.2022)
10. Reinstall element containing cap on the water heating canister to secure the
element.
Figure 30
11. Reconnect all wires connected to the heating element.
Figure 31
Reconnect
wires
Heat shrink/electrical tape (fi eld supplied) must be re-applied to the
connectors to cover the screws to avoid product damage.
12. Refi ll the water heater with water before restoring power. Then replace cover
and verify proper operation.
NOTICE: PRODUCT DAMAGE, PROPERTY DAMAGE
 The water heater must be full of water before the power is
turned on. The heating element will be damaged if energized
while heating canister is dry. Failures due to “dry-firing” ARE
NOT covered by warranty.
11.5 Descaling the Heating Element
Scale deposits can aff ect the heating capability of the element. Heavy scale can
even cause damage to the element.
NOTICE: PRODUCT DAMAGE
 Failure of electric elements due to lime scale build-up on the
heating surface, low pH, or other imbalance IS NOT covered
by the warranty. See Section 3.
The element can be descaled either chemically or manually.
To descale chemically:
1. Soak the element in white vinegar or other food grade descaling solution
approved for use in potable water systems.
2. Once descaled, rinse well with a fresh water / baking soda solution.
To descale manually:
1. After the element has dried, use a soft brush (non-metallic to prevent
damaging th stainless steel sheath) on the element.
2. Brush the dried minerals off .
Reinstall the element after descaling.
NOTICE: PRODUCT DAMAGE, PROPERTY DAMAGE
 The water heater must be full of water before the power is
turned on. The heating element will be damaged if energized
while heating canister is dry. Failures due to “dry-firing” ARE
NOT covered by warranty.