Drazice OKCE 200 S/2 User Manual - Page 13
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9. HEATER CLEANING AND ANODE ROD EXCHANGE
Repetitive water heating causes limestone sediment on both the tank walls and chiefly the flange lid. The sedimentation
depends on the hardness of water heated, its temperature, and amount of hot water consumed. We recommend checking
and cleaning the tank from scale, if necessary, inspection and possible replacement of anode rod, after two years of
operation. The anode life is theoretically calculated for two years of operation; however, it changes with water hardness
and chemical composition in the place of use. Based on such an inspection, the next term of anode rod exchange may be
determined. Have the company in charge of service affairs clean and exchange the anode. When discharging water from
the heater, the mixing valve of the hot water tap must be open in order to avoid creating underpressure that would prevent
water discharge.
10. IMPORTANT NOTICES
- Check and exchange the Mg anode regularly.
- No stop valves can be put between the heater and the safety valve.
- If the overpressure in the eater main exceeds 0.48 MPa, a reduction valve must be mounted before the safety valve.
- All outlets of hot water must be equipped with a combination faucet.
- Before filling the heater with water for the first time, it is recommended to fasten the flange connection nuts of the tank.
- It is not allowed to handle the thermostat, aside from temperature resetting with a control button.
- All electric installation handling, setting, and regulation feature exchange, may only be implemented by a service
company.
Notice: To prevent formation of bacteria (e.g. Legionella pneumophila) within stack heating it is recommended, if
absolutely necessary, to increase the temperature of HSW periodically for a transitional period of time to at least 70°C. It
is also possible to make use of another way of HSW disinfecting.
11. SPARE PARTS
- Flange lid
- thermostat and thermal fuse
- control lights with wires
- heating element
When ordering spare parts, give part name, type, and type number from the heater label.
12. INSTALLATION REGULATIONS
Regulations and instructions that must be obeyed if the heater is connected
a) to the heating system
ČSN 06 0310 – Thermal systems in buildings – Designing and Installation
ČSN 06 0830 – Thermal systems in buildings – Protecting devices
b) to the electrical network
ČSN 33 2180 - Connecting of electric devices and appliances
ČSN 33 2000-4-41 - Low voltage electric installations Protective measures to ensure safety – Protection against
electric shock
ČSN 33 2000-7-701 - Low voltage electric installations: Single-purpose devices and devices in special premises -
Premises with tub or shower
c) to the hot water heating system
ČSN 06 0320 - Thermal systems in buildings - Hot water preparation – Design and Project Engineering
ČSN 06 0830 – Thermal systems in buildings – Protecting devices
ČSN 73 6660 – Internal water conduits
ČSN 07 7401 - Water and steam for thermal energy equipments with working steam pressure up to 8 MPa
ČSN 06 1010 - Tank water heaters with water and steam heating; and combined with electric heating. Technical
ČSN 75 5455 – Calculation of water installations inside buildings
ČSN EN 12897 – Water supply – Indirectly heated closed tank-type water heaters
Both the electric and water installation must follow and meet the requirements and regulations relevant in the country of use.
- flange lid seal
- Magnesium anode
- control button for the thermostat
requirements. Testing.
- set of M12 (or M10) bolts
- insulation flange lid
- capillary thermometer
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