Wolf CGB-75 - Filling the System

28 3062555_201804
13.Fillingthesystem
Fill the system and vent it properly to safeguard the perfect
functioning of the condensing boiler.
Beforeconnectingthegascondensingboiler,
ush the heating system to remove residues
suchasweldingpearls,hemp,putty,etc.from
thepipework.Checkthedirtlter.
- The gas tap must be shut
- The locking cap on the quick-acting air vent valve should
not be unscrewed
- Open all radiator valves
- Open the return valves, and the heat exchanger will then be
graduallylledwithwaterfrombelow
- With the entire heating system and boiler in a cold condition,
slowlyll thesystemviatheinspection/BDFvalveonthe
return until approx. 2 bar pressure is indicated
- Opentheowvalvesonthecondensingboiler
- Fill the heating system to 2 bar pressure In operation, the pressure
gauge (on site) must indicate between 1.5 and 2.5 bar
- Check the entire system for water leaks
- Open the air vent valve
- Start the condensing boiler, set the heating water temperature
selector to position "2" (pump running, illuminated indicator
ring for status display constantly green)
- Ventthepump;todothis,brieyopenandthenretighten
the air vent screw.
- Vent the heating circuit completely, switching the condensing
boiler ON for 5 seconds and OFF for 5 seconds at the ON/
OFFswitch,vetimesinsuccession
- Top up with water (technical information) if the system pres-
sure falls below 1.5 bar
- Open the gas ball valve
- Press reset.
Note
Note: - In continuous mode, the heating circuit is auto-
matically vented via the air vent valve
- At a system pressure below 1.0 bar, the boiler
will enter a fault state
Drain&llvalve
ON/OFF switch ThermometerReset button
Automatic air vent valve
Air vent valve, heating
circuit pump
- Fillthetrapwithwaterandtittotheboiler
Trap