32
i.4.5Drainingcondensatewater
Driptraysforcollectionofcondensatewaterareinstalledunderplateheatexchangerandcoolingcoil.Each
driptrayisprovidedwithadrainageoutlet.Awatertrapisalwaysnecessary.Toavoidfreezeupsandfrost
burstsofwatertrapandpipes,sufficientinsulationisrecommended
andinstallationofheatingbetween
theinsulationandwatertrap/pipescouldevenbenecessary(insulation,heatingandcontrollerforthe
heatingarenotdeliveredbySystemair).
i.4.6Drainingcondensatewaterfromplateheatexchanger
Condensatefromtheplateheatexchangeriscollectedinthedriptray.Heavynegativeairpressure
inthis
sectionpreventsthewaterfromflowingoutofthedrainpipe.Awatertrapwithsufficientclosinglevelof
thewaterisessentialtoensurethatcondensatewaterflowsoutoftheunit.Theclosinglevelofthewater
trapmustbeestimatedcorrectlytoensuresafeescapeofthe
water(seetheillustrationandestimatethe
minimumclosinglevelaccordingtothetable).Thepipediameterofthewatertrapandsewagesystemmust
beidenticaltothepipediam eterofthedrainageoutletfromthetray.
Awatertrapisoptionalandinstallationofthewatertrapisnot
included.
Remembertocheckthatthereiswaterinthewatertrap.
NegativepressureP(Pa)
i.4.7Drainingcondensatewaterfromcoolingbattery
Ifthecoolingbatteryandthedriptrayisplacedintheunitwherenegativepressure(underpressure)
occurs,theclosinglevelofthewatertrapmust
beestimatedcorrectly.Seetheabove‐mentioned
informationinsectioni.4.6–Drainingcondensatewaterfromtheplateheatexchanger.
Ifthecoolingbatteryandthedriptrayisplacedintheunitwherepositivepressure(overpressure)occurs,
theclosinglevelofthewatertrapmustbeestimatedcorrectlyas
shownontheillustrationbelow.Awater
trapisoptionaland installationofthewatertrapisnotincluded.
Remembertocheckthatthereiswaterinthewatertrap.
PositivepressureP(Pa)
P H1Minimum H2
500Pa 100mm 40mm
750Pa 150mm 55mm
1.000Pa 190mm 70mm
P H1Minimum H2
500Pa 90mm 65mm
750Pa 120mm 90mm
1.000Pa 150mm 120mm
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