Maintenance; Sacrificial Anode; Draining; Cleaning & Decalcification - Reflex Storatherm Aqua 300-2 Manual De Instalación Y Mantenimiento

5

Maintenance

5.1

Sacrificial Anode

The magnesium sacrificial anode offers minimum protection for possible cracks in the enameling in accordance with DIN 4753. An initial inspection
should be carried out after two years of operation at the latest.
CAUTION
Corrosion damage!
A worn anode can lead to early corrosion damage. Depending on the local water qualities, the sacrificial anode should be checked at least every two
years, preferably every year, and replaced immediately if necessary.
The potable water must have a minimum conductivity of 100 μS/cm. Anode protection cannot be guaranteed otherwise.
If the anode is more than 2/3 warped, it must be replaced immediately. The heater must be depressurized for this. When replacing the anode, pay
attention to the electrical connections.
5.2

Draining

Before cleaning or carrying out repair work, disconnect the heater from the water network and drain it.
If necessary, also drain the heating coil.
5.3 Cleaning & Decalcification
The calcification rate of the hot water heater depends on the utilization time, operating temperature and the water hardness.
CAUTION
Water damage!
A faulty or corroded seal can lead to water damage. Check the seal of the cleaning flange and replace it if necessary.
Heating surfaces that are calcified reduce the thermal output and the potable water content of the heater. The energy required and heat-up times are
increased. The heater should therefore be decalcified at regular intervals; with water that has a low calcium content, deposited scum should be washed
off regularly.
5.4

Recommissioning

After cleaning or repair work, rinse the heater out thoroughly. Bleed the individual hydraulic systems.
6

Faults

Clogged connections
• Fault: With copper pipe installations, adverse relationships through electro-chemical processes between sacrificial anode and the pipe material
can cause connections to clog.
• Remedy: Electric isolation of the copper pipe installation and the heater using isolating screw connections.
Odor impairment and darkened coloring of the heated water
• Fault: During operation, strong and unpleasant odors are given off by the water pipes. This is usually due to a build-up of hydrogen sulfide caused
by sulfate-reducing bacteria. These are found in water that is very low in oxygen and feed on the oxygen produced by the anode. This process
poses no health risk.
• Remedy: Clean the vessel, replace the sacrificial anode and operate at > 60 °C. If no change is detected, replace the magnesium sacrificial anode
with an external current anode.
The user shall bear the costs of this alteration.
Indirectly fired hot water heater — 06.2017
Maintenance
English — 9