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Requiredbrickveneer and thermal insulation:
Minimalthermalinsulationof protectedbuilding panels was defined duringthe test of Blanzek fireplace insertsinaccordance with SN EN13
229. Duringthe test the thermalinsulationmade of cellular calcium-silicateslabswas used =250kg/m3.Itis neccessaryto use thiskindof
materialinthe prescribedminimal thickness.
Thesepreventiverequirements have been set:
BLANZEK
thickness/mm
back wall 100brickveneer side wall100
brickveneer replacement insulation acc. toAGI Q 132 ceiling inthe surround60
floor25/25*
side wall30
back wall 30
thermalinsulationlayer
convectionairceiling intermediate floor 30/30
*floor25mm or25mm of insulationunder thefireplaceinsert
Minimum distances of thefireplace insertfromthe inner sideofthe insulation:
-Side wall 80 mm from theinsertsurfaceto theinner sideoftheinsulation
-Back wall80mm fromtheinsertsurface totheinnerside oftheinsulation
-Floor 300 mm fromthebottomedgeofthe spaceforwoodto the topedgeof floorinsulation
-Ceiling 330mm fromthe topedgeoftheinner part of ceiling insulation
1. Brickveneer: a10cmthick mineralbrick veneer must be made exactlyontheprotectedbuildingwall(back wall where appropriateside
wall). Thebrick veneer mustabutonto theinsulationlayer andonthe protected buildingside. Itmust over-lap theconnectingpiece
(venting) upwards by at least20cm. The insulationbrick veneer is not neccessarywhenthebuildingwallis 10 cm distant at leastandisnot
made ofcombustiblematerialand itis not astructuralconcrete-steel wall.
2. Ceilingof theroomabovetheinsert (brickveneerreplacement): iftheopenspace or the coatingabove theinsert extends to the room
ceiling, itisneccessaryto protect theceilingwhenit is made of combustible materialoritserves asacarryingelement. The protection
consists of a6 cm conductive(better is10cm)thick thermal insulationlayer (insulationmaterial index. 12.07.21.75.11 accordingto AGI
Q132).Itisrecommended to takethis preventivemeasure as abase intermediate floor e.g.made of sheet-metal)withtheinsulation
material situatedaboveit.
3. Thermal insulation: convectioncoatingand convectionaccessplate (exogenous
profileofthefacility)need to becoated fromall quartersby thethermalinsulation
layer. Thethermal insulationmust be without jointsand mustover-lap each other
onthe sides. Ifthese insulatingboardsarenot fixedonwalls, oncoatingoron
abutting boards, it is neccessaryto fix themcca30cmapart. The coating inwards
theroom(aperture)doesnotneed tobe insulatedwhentheinsertis designed in
such awaythat thecoating surfaceand thesurfaceof the wood storingchamber
couldreachatemperature of85°Celsius. Forsurfaces made of mineral construction
material, exceptfor theareaswhereobjectscould be detached, the temperatureis
120°Celsius. Thermalinsulationlayers madeofrock woolorcomparablematerial
mustbe thoroughlycoatedfromtheroomside and convectionairarea as a
protectionagainst fibre fraying.
4. Iftheconnectingpiece goes through the partswith combustiblematerials (e.g.
protectivewall), it isnecessaryto keepinstructionsincompliancewith national
technicalstandards andregulations.Infireplace insertswhicharenot provided by
thebutterflyvalveexactlyinthebellmouth,itispossiblke toputapartwith a
butterfly valve(3) betweenthe fireplaceinsert(1)andtheconnectingpiece (2).
The partmustbeprovided by ascrewtoprotectitagainstsliding.Thevalveshaft
goesthroughthewall bushing (4).Theshaftmustnot beblocked.
Permitedthermalinsulationmaterialandmaterialfor brickveneers (minimal
requirements)
1. Thermalinsulation:cellular calcium-silicate slabs =250kg/m3,mineral wool
boards, ceramics fibreboards.
2.Brickveneer and surround: Liapor,bricks,concrete,no-fines concrete,stone.
3. Alternatebrick veneers andthermalinsulationmaterial:must beauthorized.They
must also fulfilleveryrequirementfor thermalinsulationandsurrounds.Further
informationabouttheseconstructionmaterialscanbeobtained from specialshops.
Connectionofthefireplace insert:
The fireplace insert canbe connected withthe chimneybyconnecting pieces. The insert
isconnectedtothe chimneyairchannelby a steel smokefluewitha maximum length of
1.5m. Theremustbe asafetypinonthe smoke flue bellmouth topreventslippage.
