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2.4.1 PROTECTION AGAINST CORROSION
The boiler must be connected with a device regulating the temperature of the boiler´s return
connection. It is suitable to use the mixing device Attack-Oventrop (Pic.3), which enables
creation of the separate boiler and heating circuit. Thereby is the boiler protected against
undercooling and the creation of water steam. Acids and tars in the boiler´s feeding chamber are
eliminated.
The Attack-Oventrop device keeps the constant temperature of the return heating water flowing
into the boiler over 65 °C by setting the thermostatic head to the level 5–6.When the individual
thermal regulation mixing valve is used, it is possible to control the temperature of the heating
water independently on the temperature of water in the boiler by setting the flap. The
temperature in the boiler has to be kept in the range of 80–90 °C.
Pic. 3 Device ATTACK Oventrop
CAUTION
If a protection device against corrosion is not intalled in the system or the device does not work
properly, it may lead to creation of an aggressive condensate and thereby boiler damage.
Protection against condensation must be used during boiler operation, otherwise the
warranty is void!
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