Wolf COB - Technical Information

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3062547_201802
36 Technicalinformation
Generalinformation
Forreasonsofoperationalsafety,useonlyoriginalWolf
componentsforbalanceduesandstandardues.
Where necessary, adapt the installation examples to the relevant
building regulations and requirements in your country/region.
Discuss any questions relating to the installation of inspection
covers and vents with the local ue gas inspector.
At low outside temperatures, the water vapour
contained in the ue gas may condense and
freezeontheair/uegasroutingsystem.Thisice
mayfallfromtheroofcausinginjuriesormaterial
losses.Preventfallingicewithsuitablemeasures,
e.g.installationofasuitablesnowguard.
Ifthebalanceduecrossesdifferentoors,route
thepipesoutsidetheinstallationroominsidea
ductwithareresistanceofatleast90min.Ifthis
instructionisnotfollowed,andifthereisexposure
torefromoutside,thereisariskthatthereand
smokearetransmittedtootheroors.Thisagain
resultsinariskofasphyxiation,orseveretolife-
threateningburnsandpoisoning.
Condensing boilers with a balanced ue outlet above the roof
may only be installed in attics, or in rooms where the ceiling also
forms the roof, or where only the roof construction is located
above the ceiling.
The following applies to boilers with a balanced ue above the
roof, where only the roof structure lies above the ceiling:
Ifreresistanceisrequiredfortheceiling,the
pipesforcombustionairsupplyanduegasmust
beequippedwithacasingintheareabetween
thetopedgeoftheceilingandtheroofskin.The
casingmustprovidethesamereresistanceasthe
ceilingandmustbemadefromnon-combustible
materials.Iftheprecautionsmentionedhereare
not taken,
and if there is exposure to re from
outside,thereisariskthatthereandsmokeare
transmittedtootheroors.Thisagainresultsina
riskofasphyxiation,orseveretolife-threatening
burnsandpoisoning.
Ifreresistanceisnotrequiredfortheceiling,
route the ducts for combustion air supply and
uegasexpulsionbetweenthetopedgeofthe
ceiling and the roof skin inside a duct made
fromnon-combustible,rigidmaterialsorinsidea
protectivemetalpipe(mechanicalprotection).If
theprecautionsmentionedherearenottaken, and
ifthereisexposuretorefromoutside,thereisa
riskthatthereandsmokearetransmittedtoother
oors.Thisagainresultsinariskofasphyxiation,
orseveretolife-threateningburnsandpoisoning.
No clearance is required between the concentric balanced ue
and combustible materials or components, as temperatures
above 85°C will not occur at the rated heating output.
The electronic ue gas temperature limiter switches the oil
condensing boiler off when the ue gas temperature exceeds
120 °C.
Theappliancewillgobackintooperationwhen
the reset button is pressed. It is important to
nd out why the appliance deactivated before
resettingtheboiler.Resettingtheboilerwhenthe
uegastemperatureistoohighcandestroythe
uegassystem.
Note
Fluegastemperaturelimiter
It must be possible to inspect the entire cross-section of the ues.
Therefore, install an appropriate cleaning and/or inspection port
inside the boiler room; agree suitable arrangements with the
local ue gas inspector.
Connectiontotheair/uegasroutingsystem
Flue cascades are only suitable in balanced ue operation. They
must be designed to EN 13984-1.
Auecascadeisonlypermittedwithatestedue
gas damper. Operation with a leaking ue gas
dampercarriesariskof
asphyxiationor severe
tolifethreateninginjuriescausedbytheleaking
uegas.
Fluecascade
Abalanceduewithoutaductmustnotberouted
throughotherinstallationrooms,asmechanical
protectionisnotensured.Otherwise,
ifthereis
exposuretorefromoutside,thereisariskthatthe
reandsmokearetransmittedtootheroors.This
againresultsinariskofseveretolife-threatening
burnsandpoisoning.
Ducts which were previously connected to
an oil or solid fuel boiler must be thoroughly
cleaned by the chimney sweep. There must
be no dust, sulphur or soot residues left on
the inner surface of the chimney. If this is not
possible, use a separate ventilation supply.
Ifthecombustionairisdrawninviathecleaned
duct,thepriorusecancauseodoursintheboiler
room.
Outside the duct, secure the balanced ue or
standarduewithspacerclips.Thesemustbe
placedataminimumof50cmfromtheappliance
connection and upstream/downstream of
diversions,topreventthepipejointsbeingpulled
apart.Fluegasmayescapeiftheseinstructions
arenotobserved.Thisagainresultsinariskof
asphyxiation,orseverelife-threateningpoisoning.
Additionally,fallingpartsmayresultininjuriesor
damagetothedevice.
Note