Wolf CGB-35 Especificaciones técnicas
Maintenance instructions
Gas red condensing boiler
CGB-35 Boiler
CGB-50 Boiler
Document no.: 3061491_0805 Subjecttotechnicalmodications. GB
Wolf GmbH · PO Box 1380 · 84048 Mainburg · Tel. +49 8751/74-0 · Fax +49 8751/741600 · Internet: www.wolf-heiztechnik.de
23061491_0805
Index ................................................................................................................ Page
Safetyinstructions ...................................................................................................3
Maintenancesteps ............................................................................................ 4-13
Listofrequiredcomponents ..................................................................................14
Overviewofthestepstobetakenandthemaintenancereport ...................... 15-16
Index
With innovative maintenance technology
Maintenance position 2
Maintenance position 1
3
3061491_0805
The following symbols are used in this
document to highlight special information
and warnings. These important instructions
relate to personal safety and general ope-
rational safety of the equipment.
"Safety Instructions" must be strictly
followed to prevent the risk of endan-
gering or injuring persons or causing
material damage to the equipment.
Danger from 'live' electrical compon-
ents.
NB: Switch off the main ON/OFF switch
before removing any panels.
Never reach into electrical compon-
ents or touch any electrical contacts
when the main ON/OFF switch is tur-
ned on! Otherwise you risk a harmful
or potentially fatal electric shock.
A voltage will still be present at the
mains terminals when the main ON/
OFF switch is turned off.
"NB" indicates technical instructions
which you must observe to prevent
material losses and boiler malfunc-
tions.
NB
Safety instructions
General notes
Maintenanceworkmustonlybecarried
outbyaqualiedheatingcontractor.
Regular maintenance and the exclusi-
veuseoforiginalWolfsparepartsare
necessarypreconditionsfortrouble-free
operationandalongservicelife.
Wethereforerecommendyouarrangea
maintenancecontractwithalocalheating
contractor.
Fig.:Gascombinationvalve
Dangerfromelectriccurrent
Escapinggasmaycausepoisoningortheriskofexplosion
Fig.:Ignitiontransformer,highvoltageignitionelectrode,heat
exchanger.Riskfrom'live'electricalcomponents,riskofburning
fromhotcomponents
Fig.:Gasconnection:Escapinggasmaycausepoisoningor
theriskofexplosion
Fig.:Terminalbox:Dangerfromelectriccurrent
43061491_0805
Maintenance steps
Closethegastap.
The mains terminals are 'live' even
when the ON/OFF switch has been
switchedOFF.
•Disconnectthesystemfromthepowersupply.
•Pivotthecontrolunitliddown.
SwitchOFFthecondensingboileratthe
ON/OFFswitch.
•Unlockthecasinglidwiththel.h.andr.h.
rotatingbolts.Releasethebottomofthe
casinglidandunhookatthetop.
L.h.rotatingbolt R.h.rotatingbolt
5
3061491_0805
Maintenance steps
•Releasetheelectricalcable(6x).
•Pivot the heat exchanger into the mainte-
nanceposition1.
Danger of burning
Severalcomponentsmaybehot.Letthesecool
downforapprox.halfanhourorweargloves.
•Crackopenthegassupplyconnection
andremovethegasket.
•Releasetheheatexchangerlockingspring.
63061491_0805
Maintenance steps
•Pullthemulti-purposebagovertheheatex-
changer.
•Visualburnerunitinspection.
Replacethemonitoringelectrode.
Checkandreplacetheignitionelectrode,if
necessary.
Monitoring
electrode
Ignitionelectrode
•Removetheburnerunitupwards.
•Opentheretainingtab.
7
3061491_0805
Maintenance steps
•Removethedisplacersegmentsoneafter
theother. Clamp
Lowerdisplacer
section
Sealring
Upperdisplacer
section
•Removetheclamp.
•Hook the multi-purpose bag into the heat
exchanger.
•Releasetheretainerandpivottheheat
exchangerintothemaintenanceposition2.
83061491_0805
Maintenance steps
•Cleanthecondensatepan.
•Cleantheheatexchangerwithabrush.
•Visualuepipeinspection.
•Removethemulti-purposebag.
9
3061491_0805
Maintenance steps
•Lubricatetheheatexchangergasketsatthe
topandbottomwithsiliconegrease.
•Lubricatetheheatexchangerseat.
Never stretch gaskets.
NB
•Replacetheheatexchangergasketatthe
topandbottom.
10 3061491_0805
Maintenance steps
•Insertthedisplacerclamp.
•Replacethesealringandthelowerdis-
placersection.
•Tiptheheatexchanger(forward)toreturnit
tomaintenanceposition2.
Inserttheupperdisplacersectionasfarasit
willgointotheburner.
•Pivot the heat exchanger into the mainte-
nanceposition1,inserttheburnerunitand
threadintherearretainingspring.
Positionthefrontretainingspringwithakey
intoitsposition.
Assembly
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