Maktek OMEGA, Installation And Service Manual

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4. COMMISSIONING
4.1 FILLING WATER TO THE SYSTEM
&
CAUTION!
Before making the primary circuit connections to the boiler, make sure that the primary circuit
is clean. The primary circuit must be flushed and and particules inside the installation must
be cleaned so that these particules do not damage the boiler during operation. This is
especially important when using an old existing primary circuit installation. Any failures and
damages to the boiler cuased by dirty primary circuit installiation is out of manufacturer’s
warranty.
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a) Make sure that the automatic air vent on the circulation pump is loose.
b) Turn on the filling valve and fill water until the pressure reaches 1.5 bars by checking the
manometer. Close the filling valve.
c) Use the manual air vent on top of the boiler to extract the air trapped inside the heat
exchanger. Close the manual air vent when bubble free water comes out of the drain hose.
d) Vent the air inside each radiator until bubble free water comes out, using the air vents on
the radiators.
e) Check the water pressure on the manometer. If it decreased, turn on the filling valve to
reach 1.5bars.
f) Repeat steps c,d and e until there is no air left in the system and the manometer showing
1.5 bars.
Manual air vent