Wolf COB - Filling;Draining the Heating System

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3062547_201802
Fillingtheheatingsystem
Fill the system and vent it properly to ensure
perfectboilerfunction.
Beforeconnectingthe boiler, ush theheating
systemtoremoveresiduessuchasweldingpearls,
hemp,putty,etc.fromthepipework.
- Open the cap on the vent in the boiler by one revolution.
- Open all radiator valves.
- Fill the system via the return line at 2 bar (1.5 to 2.5 bar).
- With the entire heating system and boiler in a cold condition,
slowly via the inspection/BDF valve at the return until 2 bar
pressure is indicated.
- Check the entire system for water leaks.
- Start the boiler, set the heating water temperature to position
"2" (pump running, illuminated signal ring (as status indicator)
constantly green).
- Vent the pump; for this, briey open and then retighten the air
vent screw.
- Vent the heating circuit completely, switching the boiler ON
for 5 sec. and OFF for 5 seconds at the ON/OFF switch, ve
times in succession.
- When the system pressure drops below 1.5 bar, top up the
water.
Note
19 Filling/drainingtheheatingsystem
Air vent valve
Fig.: Venting the COB
Switchoffinstallation(seeoperating
instructions)andletcooltoamax.of40°C,
thereisariskofscaldingotherwise.
Securetheheatingsystemagainstrestarting,
otherwisethereisariskofelectrocution.
- Open drain valve (BDF valve) on the boiler, for example.
- Open the air vent valves on the radiators.
- Drain off the heating water
Drainingtheheatingsystem