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ÜKY/Duopel Boilers User Manual
Warning against corrosion in the installation:
ÜNMAK boilers are extremely resistant to rust and therefore corrosion. However, all iron-based
components (including plumbing pipes and radiators) in the heating installation must be protected
against corrosion. Oxygen in the installation water causes rust and therefore material loss as a result
of oxidation on iron surfaces.
During the first filling of the installation, the accumulated air must be evacuated. Usually <+ after the
first filling
"0+
+
If the necessary precautions are taken, there will be no damage caused by the oxygen in the water.
Warning against frost protection:
The heating system must be completely insulated. The parts of the installation that are open to
external environments should be more isolated than the interior parts. In the open expansion line,
the flow and return pipes must be insulated and even the expansion tank must be insulated.
Matters to be considered in new installations:
System design and sizing should be done correctly to minimize the addition of fresh water. None of
the materials used in the installation should be gas permeable. Maximum 50 micron filter with
synthetic or metal mesh should be placed on the fresh water addition line.
Points to be considered for radiators connected to old installations:
A corrosion protection layer (black magnetite) is formed on metal surfaces in contact with water in a
long-term heating system. When a new boiler is installed in the old system, clean surfaces of the
boiler will be the first place where corrosion will begin. Therefore, when a new boiler is connected to
the old heating system, in addition to the precautions to be taken for the new systems, the following
issues should also be considered:
1. Before the old system is connected to the boiler, it should be washed thoroughly to remove any
dirt and sediment from it.
2. A manual valve air separator should be placed at the top of the system.
The installation must be washed several times with water before installing a new boiler
in the old heating installation.
The chimney must be cleaned before installing the old chimney installations.
Each boiler chimney should be detached. Never more than one boiler should be
connected to the same flue system.
