Buderus 8732929427, Installation And Service Instructions For Specialists

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8
Environmental protection and disposal
Logalux – 6721814238 (2020/03) 45
8 Environmental protection and disposal
Environmental protection is a fundamental corporate strategy of the
Bosch Group.
The quality of our products, their economy and environmental safety are
all of equal importance to us and all environmental protection legislation
and regulations are strictly observed.
We use the best possible technology and materials for protecting the
environment taking account of economic considerations.
Packaging
Where packaging is concerned, we participate in country-specific
recycling processes that ensure optimum recycling.
All of our packaging materials are environmentally compatible and can be
recycled.
Used appliances
Used appliances contain valuable materials that can be recycled.
The various assemblies can be easily dismantled. Synthetic materials are
marked accordingly. Assemblies can therefore be sorted by composition
and passed on for recycling or disposal.
9 Inspection and maintenance
WARNING:
Risk of scalding from hot water!
Hot water can cause serious burns.
▶ Allow the cylinder to cool down sufficiently.
▶ Allow the cylinder to cool down sufficiently before carrying out any
maintenance.
▶ Carry out cleaning and maintenance procedures in the specified
intervals.
▶ Remedy all faults immediately.
▶ Only use genuine spare parts!
9.1 Inspection
An inspection/check of the cylinders must be carried out every 2 months
in accordance with DIN EN 806-5. During this the set temperature
should be checked and compared with the actual temperature of the
heated water.
9.2 Maintenance
Annual maintenance should be carried out in accordance with DIN EN
806-5, Appendix A, tab. A1, line 42. This includes the following work:
• Function check of the pressure-relief valve
• Tightness test of all connections
• Cleaning of the cylinder
• Checking of the anode
9.3 Maintenance intervals
The maintenance to be carried out depends on the flow rate, operating
temperature and water hardness (

Tab. 53). We recommend the
maintenance intervals specified in tab. 53 which are based on many
years of experience.
The use of chlorinated potable water or a water softener unit reduces the
maintenance intervals.
You can check the water quality with your water supply utility.
Depending on the composition of the water, it can make sense to deviate
from the reference values listed.
Table 53 Maintenance intervals in months
9.4 Maintenance work
9.4.1 Testing the pressure relief valve
▶ Check the pressure relief valve annually.
9.4.2 Descaling and cleaning
In order to improve the cleaning effect, heat up the heat exchanger prior
to cleaning it with a water jet. The thermal shock effect separates
deposits (e.g. limescale) more readily.
▶ Isolate the cylinder from the piping on the domestic water side.
▶ Close the shut-off valves and isolate the immersion heater (if used)
from the mains power supply. (

Fig. 21, page 62).
▶ Drain the cylinder (

Fig. 20, page 61).
▶ Open the inspection aperture on the cylinder.
▶ Check the interior of the cylinder for pollution.
-or-
▶ In the case of soft water:
Check the container regularly and clean to remove limescale.
-or-
▶ In the case of hard water or severe pollution:
Regularly descale the cylinder in line with the actual amount of
limescale using chemical cleaning methods (e.g. with a suitable
descaling agent based on citric acid).
▶ Hose down the inside of the cylinder (

Fig. 24, page 62).
▶ Use a wet & dry vacuum cleaner with plastic suction hose to remove
the residues.
▶ Close the inspection aperture with a new gasket
(

Fig. 25, page 63).
9.4.3 Checking the magnesium anode
Failure to service the magnesium anode properly voids the warranty for
the cylinder.
The magnesium anode is a sacrificial anode, which is consumed when
the cylinder is in operation. Two types of magnesium anode can be used.
• A non-insulated magnesium anode (

Variant A, Fig. 29, page 64).
• An insulated magnesium anode (

Variant B, Fig. 29, page 64).
We recommend that insulated magnesium anodes are additionally
checked regarding the protection current using an anode tester on an
annual basis (

Fig. 27, page 63). The anode tester is available as an
accessory.
Water hardness [°dH] 3...8.4 8.5...14 > 14
Calcium carbonate
concentration CaCO
3
[mol/m3]
0.6...1.5 1.6...2.5 > 2.5
Temperatures Months
At a normal flow rate (< cylinder content/24 h)
< 60 °C 24 21 15
60...70 °C 21 18 12
> 70 °C 15 12 6
At an increased flow rate (> cylinder content/24 h)
< 60 °C 21 18 12
60...70 °C 18 15 9
> 70 °C 12 9 6