Viessmann Vitobloc 200 EM-50/81 Operating Instructions Manual page 19

Preparations
Filling the cooling system
•
Connect the pressure hose of an electric pump
or of a hand pump with the intake (Fig. 1, item 1).
•
Open the stop cock (Fig. 1, item 2) and fill in the
coolant slowly up to approx. 1 bar.
•
Check the filling pressure at the manometer (Fig.
1, item 3). The pressure in the cold state has to
be in the range of 1.1-1.3 bar.
Venting the cooling system
•
Remove the top sound-insulation cover at rear
(Fig. 2, item 1).
•
Vent the cooling system at the gas separator
bypass (Fig. 2, item 2).
•
Vent the cooling system at the cooling water
distributor (Fig. 2, item 3).
•
Close the stop cock at the cooling water distribu-
tor (Fig. 2, item 3) and remove the pressure
hose.
•
Close the stop cock at the exhaust gas heat
exchanger (Fig. 2, item 4) and remove the pres-
sure hose.
WARNING
When venting the cooling system
please make absolutely sure that no
flammable coolant is spilled on hot sur-
faces – danger of ignition.
VITOBLOC 200 Operating instructions for the natural gas-fuelled CHP module
Fig. 1 Intake for the engine coolant with stop cock and
manometer
Fig. 2 Vent connection for the engine cooling system at
the gas separator bypass
19