Wolf CGB-2-24 - Page 54

54 3064810_201804
Fig: Manual air vent valve
Slightly open the
manual air vent valve
Pressure gauge
Fig: Pressure gauge
25.Fillingtheheatingsystem/trap
Fig: Automatic air vent valve on the heating circuit pump
Bild: Heizkreispumpe
Automatic
air vent valve
Fillingtheheatingsystem
Toensurecorrectfunctionofthecondensingboiler,ll
thesystemasinstructed,ventitcompletelyandllthe
trap.
We recommend using a sludge separator with integral
magnetite separator in the boiler inlet to protect the
highefciencypumpandtheboiler.Thisisparticularly
relevant for old systems and mixed installations.
Beforeconnectingit,ushtheentiresystemto
remove residues such as weld beads, hemp,
putty, etc. from the pipework. Check the dirt
lter.
• The gas condensing boiler must be switched OFF.
Close the gas ball valve.
• Open the cap of the automatic air vent valve on the
highefciencypumpbyonerevolution.
• Open all radiator valves.
 Opentheowandreturnvalvesontheboiler.
• Slowlylltheentireheatingsystemandappliancein
a cold condition to approx. 2 bar via the return.
Neveruseinhibitorsorantifreeze.
• Bleed all radiators with a bleed key and if the system
pressuredropssignicantly,topupwithwaterto2bar.
• Check the entire system and all component unions
for water leaks.
Ifleak-tightnesscannotbeensured,there
isariskofwaterdamage.
• Switch ON the condensing boiler at the red ON/OFF
switch in the WOLF logo (pump will run).
• Brieyopenthemanualairventvalveuntilallairhas
escaped and then close it again.
Please
note
Please
note
Fig: Gas connection: Risk of poisoning or explosion in the event of
gas escaping
Shut-off valve
(ow)
Shut-off valve
(return)
Gas ball valve