Wolf CGB-2-24 - Page 73

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Fluegastemperaturelimiter
The electronic ue gas temperature limiter switches the oil
condensingboileroffwhentheuegastemperatureexceeds
110 °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.
Please
note
37.Technicalinformation,
air/uegasrouting
With low outside temperatures, the water vapour
containedintheuegasmaycondenseandfreeze
ontheue.Thisicemayfallfromtheroofcaus-
inginjuriesormateriallosses.Prevent ice from
falling by taking on-site measures, e.g. installing a
snow guard.
If re resistance is not required for the ceiling,
route the lines for the combustion air supply and
theuegasfromthetopedgeoftheceilingtothe
roof skin in a duct made from non-combustible, rigid
materials or in a protective metal pipe (mechanical
protection).Thereisariskofrespreadingifthese
requirements are not observed.
Generalinformation
Forreasonsofoperationalsafety,useonlyoriginalWolf
componentsforconcentricbalanceduesandstandard
ues.
Where necessary, adapt the installation examples to the rel-
evant building regulations and requirements in your country/
region. Any questions relating to the installation, particularly
regarding the inspection components and ventilation aper-
tures,shouldberaisedwithyourlocaluegasinspectorprior
to installation.
Gascondensingboilerswithabalanceduewith
roof outlet may be installed only in attics or in rooms
whose ceiling also forms the roof or where only the
roof construction is located above the ceiling.
Ifthebalanceduepassesthroughdifferentoorsof
the building, route the pipes outside the boiler room
insideaductwithatleast90minreresistance.
In low-rise residential buildings (building category
1to2)aminimumof30minreresistanceisre-
quired. Fire may spread if these instructions are
not observed.
Thefollowingappliestogasboilerswithabalanceduerouted
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.
Thereisariskofrespreadingiftheserequirements
are not observed.
Outsidetheduct,securethebalancedueorstand-
arduewithspacerclips.Thesemustbeprovided
at a minimum 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.
Furthermore, damage to the appliance may result.
No clearance is required between the concentric balanced
ueandcombustiblematerialsorcomponents,asattherated
output temperatures higher than 85 °C will not arise.
If only a standard ue is installed, maintain the clearances
speciedbyDVGW/TRGI2008[orlocalregulations].
Air/uesystems without a duct must notbe
routed through other installation rooms, as
thereisariskofrespreadingandmechanical
protectionisnotensured.
Combustion air must not be drawn from chimneys
previouslyusedtocarryuegasesfromoilorsolid
fuel boilers.
Please
note