Alarko SUPER FIT 24, Инструкции по сборке, установке и эксплуатации

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4.6 Appropriate Central Heating Pipes
For combi boiler not to be affected from electro cell, plumbing mud and biocide
(green colored bacterium which originates in water), use of oxygen barrier pipes
in accordance with DIN 4726 (a pipe having oxygen diffusion value lower than
0.1 g/m3.day at 40°C) is highly recommended.
Systems Which Have Plastic Pipes without Oxygen Barrier
■ These systems are not recommended to use.
■ In case of use, plumbing mud can be formed in boiler and system due to the
oxygen absorption to the pipes. This condition may cause the heat exchanger
to be obstructed. Moreover, it may also lead to electro cell formation (cell
effect) due to the change in water characteristics (especially PH value), and
finally heat exchanger may be punctured.
■ To prohibit above consequences, inhibitors (additives) must be added to
piping water (Sentinel X100 etc.).
Underfloor Heating Systems without Oxygen Barrier
■ ■ These systems are not recommended to use.
■ In case of use, oxygen absorption to underfloor heating system may happen
and green colored biocide bacterium may propagate and accumulate as
colony at low water temperature. This condition causes change in water
characteristics and increase its viscosity, and finally heat exchanger and
pump obstructions may occur.
■ To prohibit above consequences, biocide and electro cell preventive inhibitors
(additives) must be added to piping water (Sentinel X700+X100 etc.).
Piping System Obstructions
■ Piping system obstructions are generally encountered just after
commissioning at old systems with iron pipes.
■ In case of encountering piping system obstructions, inhibitors must be added
to piping water (Sentinel X400 etc.).
ATTENTION!
Every covered underfloor heating pipe is not oxygen barrier pipe.
ATTENTION!
Due to the large wall thickness of plastic pipes, their inner diameters
are lower compared to steel or copper pipes with the same outer
diameter. For this reason, if plastic pipes are used in the installation,
an upper diameter should be selected and used.