4 Commissioning [specialist]
2015/03
EN-XXX_CIRCOtransfer-30E-50E_TI-MA-BA-150401-3PAW0501 - 99609x7WAG0x-mub-en - V06
13
4.1
Preparations before flushing and filling
CAUTION
Note regarding the expansion tank
To prevent that the dirt particles in the solar thermal system are flushed into the expansion
tank, some manufacturers recommend to disconnect the expansion tank from the solar circuit
before flushing and filling. Please observe the instructions of the manufacturer.
4.2
Flushing and filling the storage tank circuit
The storage tank circuit is filled by means of the valves and fittings of the heating system.
To avoid that dirt particles are washed into the heat exchanger, close the ball valves of the station
and wash out the present dirt particles and scale residues before commissioning the tank.
Make sure to only use purified heating water according to VDI 2035 / Ö-Norm H 5195 1.
1.
Open the ball valves [D|E] and put the check
valves out of operation (45°, see next page).
2.
Vent the storage tank circuit by operating the
vent plug [A] on the cross.
Make sure that the electrical components do not
get wet.
3.
Fill heating water into the storage tank circuit by
means of the fill and drain valve.
4.
Set the required operating pressure after filling
the storage tank circuit.
5.
During commissioning, vent the station at the
vent plug [A] in order to eliminate air still present
in the heat exchanger.
Storage tank circuit