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B Isolate the heating flow and return on the boiler.
B Connect the heating flow to a fresh water connection.
B Connect the hose to the heating system return.
B Put the hose from the heating return into a drain.
B Open all shut-off devices and radiator valves in the
heating system.
B Flush the heating system with fresh water until clear
water emerges from the heating return.
6.2
Filling the heating system
DANGER: Risk to life from escaping flue
gases!
B Before commissioning the boiler or the
neutralisation device, pour about 10 litres
of water into the inspection opening or
into the heating space in order to fill up the
neutralisation holder and prevent the
escape of flue gases from the boiler
siphon.
DANGER: Risk to health from drinking water
contamination!
B Always observe the regulations and
standards applicable in your country for
the prevention of contamination of
drinking water (e.g. by water from heating
systems).
B Observe EN 1717.
CAUTION: System damage due to thermal
stresses!
B Only fill the system when cold (the flow
temperature must be no more than 40 °C).
B When the heating system is in operation,
do not fill it via the boiler fill and drain valve.
Instead, only use the filling valve in the
heating system (return).
B Pay attention to the water quality as
specified in the operator's log, and record
the volume and quality of the water used
to fill the system.
For the correct use and treatment of the fill and top-up
water, follow the Code of Practice K8 in the applicable
Buderus catalogue, as well as VDI 2035.
The pH value of the heating water will increase after the
heating system has been filled.
B After 3 – 6 months (during the first service), check
whether the pH value of the heating water has
stabilised.
Logano plus SB615 Gas - We reserve the right to make any changes due to technical modifications.
6
Initial operation
35
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