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BOILER WATER PROPERTIES
The properties that should be in boiler water are below. Other parameters not
specified in the table must comply with "TS 377-10 EN12953-10, January 2006,
TSE, Cylindrical boilers requirements for feeding water and boiler water quality"
standard.
Parameter
Unit
Boiler Water
Boiler Supply Water
Appearance
-
Clean, stable, no
foam (*)
Clean and it should not
contain suspended
particles (*)
Conductivity (at 25
°
C)
Microsienens/cm
Up to 1.500 (*)
-
Total hardness 175.000 kcal/hr
and below
French hardness
Up to 20 (**)
Up to 0,5 °Fr (*)
Total hardness 175-500.000
kcal/hr
French hardness
Up to 15 (**)
Up to 0,5 °Fr (*)
Total hardness 500.000 kcal/hr
and above
French hardness
Up to 0,2 (**)
Up to 0,5 °Fr (*)
Total hardness, Cascade system
French hardness
Up to 0,2 (**)
-
(*) TS 377-10 EN12953-10, January 2006, TSE, Cylindrical boilers requirements
for
feeding water and boiler water quality
(**) VDI 2035
– Part 1, December 2005, Association of German Engineers,
Prevention of damage in water heating installations, Scale formation in drinking
water
If the heating system includes units made of material other than steel (e.g.
aluminum radiator - copper pipe), these units may require lower pH and
conductivity, but the protection of the boiler is a priority in the system and
the above values must be observed.
Organic substances usually consist of various compounds. It is difficult to
predict the effect of such mixtures and each component of them on the
boiler in advance. Organic substances can be separated into components
to form carbonic acid or other acidic components and cause wear or
perforation. This can also lead to foaming and the accumulation of
substances such as limestone, which should be as little as possible.
Note: During the economic lifetime of the boiler, the total amount of feed water used
cannot be more than 3 times the water of the entire system.
