USER MANUAL DV WITH CONTROLLER VERSION 1.01.13 90925372

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Ifthereisdustontheedgesofthe pla tes,removeitwithasoftbrush.Ifgreaseorothersuchsubstances
arepresent,thentheedgesmustbewashedusinggreasedissolvingdetergents
.
r.5.4.1By‐passdamper
Thedamperbladesarefittedwithsyntheticbearingsrequiringnolubrication.Eachdamperbladeis
connected byapivotingsystem.Thesteelrodsandbrassbushesdo not requirelubrication.Air‐tightnessof
thedampers,whenthedampermotor isintheclosedposition,must be
visually checkedonceayear.The
dampermotor istobeadjustedifthedamperdoesnot closetightly.
r.5.4.2Condensatewaterdrain
Onceayearcleanthedriptraybeneaththeheatexchanger,aswellasthedrainandthewater
trap. 
Takecarethatthatthereissufficientwaterinthewatertrap.Ifadropleteliminatorhasbeenfitted,this
mustbe
checked onceayearandcleanedifnecessary.
r.5.5Run‐aroundheatexchangerDVR
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Aheatrecoverysystemofthistypeconsistsofaheatingcoilinthesupplyair‐flowandacoolingcoilinthe
exhaustair‐flow.Afteranextendedrunningperiod(normallyafewyears)
dustparticlescanaccumulateon
thesurfaceofthecoils.Thiscanreducetheefficiencyofthecoils.Cleaningmustbecarriedoutwiththe
utmostcaretoensurethatthecoilfinsarenotdamaged.
Thepipingsystemmustbeventedonceayearasairinthesystemcan
significantlyreducethecapacityof
thecoils.
r.5.5.1Pumpandpressureexpansion
Theserviceinstructionsissuedbythepump manufacturermustbefollowed.Thepressureexpansionsystem
mustbecheckedonceayear.Ifnecessary,thepressuremustbeincreasedto the
cor rectlevel.
r.5.5.2Condensatewaterdrain
Onceayearcleanthedriptraybeneaththeheatexchanger,aswellasthedrainandthewater
trap. 
Takecarethatthatthereissufficientwaterinthewatertrap.Ifadropleteliminatorhasbeenfitted
to the
coolingcoil,thismustbe
checked onceayearandcleanedifnecessary.
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