
5
CAIisconnectedbymeansofoutletsontherearand
bottomside.Whentheinsertisembeddedinmasonry,
theentireaircontrolmechanismisaccessiblefromthe
insideandoutsideoftheinsertforpossibleinspection.
Atthesame,CAIenablestheinstallationofautomatic
combustionregulation,seebelow.Youcanconnectthis
methodofairintake,butitisnotrequired.
Preheatingcombustionair,Thefireplaceinsertisequippedwithchannelsforpreheatingairrequiredfor
combustion.Thankstothesechannelsthecombustionprocessimprovesandismoreefficient.
Airintakeregulation.Theamountofprimaryandsecondaryaircanberegulatedusingasinglecontrol.
Primaryairfacilitatesthestartoffuelcombustionwhenlightingthefireplace;secondaryair
improvestheefficiencyofcombustionanddecreasesCOemission.
Theamountofsecondarycombustionairis
preciselydividedintoairflowingalongtheinner
glassoftheinsertandairflowingatanangle
fromaboveintothecombustionchamberofthe
fireplaceinsert.Theairflowingatanangleinto
thecombustionchamberisaveryefficient
solutiontoensurethehighefficiencyandquality
ofcombustionduringperiodswhentheinsertis
operatedinthehigheroutputrange.
Inthesecases,alargeamountofvolatile
flammablematterleavesthecombustion
chamberintothetubeplateoftheexchanger
andthestreamofairdirectedintheopposite
directiontotheblazingflamesensuresmixingof
thevolatileflammablematterwithoxygenand
itsthoroughcombustion.
Thisfireplaceinsertensuressuchcleancombustionthatadditionaltertiaryairintakefor
combustionisnotrequired.Ifautomaticregulationofcombustionisinstalled,ittakesovercontrol
ofairintake.Theairintakeregulationsystemwasdesignedtoensurethatcombustionairintakeis
nevercompletelyshutoff.Thisisveryimportantwithregardtosafety,asotherwiseundercertain
conditions‐ifthedoorisopenedcarelessly‐fluegasesfromcombustioncouldexplode.
Hot‐watersheathingandfluegasexchanger.Thehot‐waterexchangerisrealizedthroughanexchangerin
thesideandbackwalloftheinsertandafluegasexchanger.Theexchangerisequippedwithribs
regulatingheatingwatercirculation.Theseribsalsoincreaseexchangerstability.Theexchangeris
testedforanoverpressureof5bar;permittedworkingoverpressureis2.5bar.
Fluegassystem.Theprincipleconsistsofthetriplepassageoffluegasthroughthetubeplateoftheflue
gassectionofthehot‐waterexchanger.Fluegasprogressivelypassesthroughthefirstrowof
tubes,whereitisdivertedintothesecondrowoftubesatthetopwiththeuseofaremovablesteel
deflector.Afterpassingthroughthesecondrow,fluegasisroutedtothethirdandlastrowoftubes