Boiler Corrosion Protection - Atmos C15E Instruction Manual

Instruction manual - GB

19. Boiler corrosion protection

The specified solution is connecting the boiler with Laddomat 21 or with a thermoregulatory valve,
which can separate the boiler circuit from the heating circuit (primary and secondary circuits), and
provide minimum of 65°C for water returning to boiler. The higher the temperature of water return-
ing to the boiler, the fewer tars and acids condensing; which damage the boiler. Temperature of the
outgoing water must permanently range between 80 - 90°C. The combustion products (waste gas)
temperature must not drop below 110°C during normal operation. Low waste gas temperature causes
condensation of tars and acids even when the specified outgoing water temperature of (80 - 90°C)
and returning water temperature of (65°C) are adhered to. These conditions may occur when using
the boiler to heat hot potable water (HPW) in summer, or when heating only a section of the building.
In this case we recommend connecting the boiler with accumulation tanks, or daily firing-up. For
outputs of 15—100 kW it is also possible to keep the minimum temperature of the returning water
(65-75°C) by utilising a three-way mixing valve with an electric actuator and electronic regulation.
20. Specified boiler connection with Laddomat 21
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20-GB