Viessmann Vitomax 200-LW M64A, Инструкция по эксплуатации и обслуживанию

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Heating systems with rated operating temperatures up to 100 ºC
(VDI 2035)
Water used in heating systems must
meet the chemical values in the Drinking
Water Ordinance [Germany]. If well
water or similar is used, check its suita-
bility before filling the system.
Prevent excessive scale build-up (cal-
cium carbonate) on the heating surfaces.
For heating systems with operating tem-
peratures up to 100 °C, VDI Directive
2035 sheet 1 "Prevention of damage in
hot water heating systems - scaling in
DHW and hot water heating systems"
applies [in Germany] with the following
standard values. Please see the explan-
ations in VDI Directive 2035 for further
information.
Total output in kW > 600
Total of alkaline earths mol/m
3 < 0.02
Total hardness in °dH < 0.11
The standard values assume the follow-
ing:
■ The volume of fill and top-up water of
the heating system during its service
life will not exceed three times the
water content of the heating system.
■ The specific system volume is less
than 20 l/kW output. In multi boiler sys-
tems, apply the output of the smallest
boiler.
■ All measures to prevent corrosion on
the water side in accordance with VDI
2035 Sheet 2 have been implemented.
Soften the fill & top-up water in heating
systems operating under the following
conditions:
■ The total of alkaline earths in the fill &
top-up water exceeds the standard
value.
■ Higher fill & top-up water volumes are
expected.
Observe the following during planning:
■ Install shut-off valves in different sec-
tions. This prevents the need for drain-
ing the entire heating water in case of
repairs or system expansion.
■ Install a water meter to record the
amount of the fill & top-up water. Enter
the volume of water and the water
hardness into the boiler service
instructions.
Operating information:
■ Commission the system step by step,
starting with the lowest boiler output
and at a high heating water flow rate.
This prevents a localised concentra-
tion of limescale deposits on the boiler
heating surfaces.
■ During expansion or repair work, only
drain the necessary sections.
Water quality requirements
Water quality requirements
5727 529 GB