SystemAir Danvent DV

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Bilag8—3
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therailsandintotheunit.MounttherailsA1andB2onthefrontside(thesidewiththeinspectiondoors)–
usethesimpleselfdrillingscrewswithoutthesealingwasher–seetheillustrationofthescrewbelow.
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Note:RailB2fitsintotherailA1,and
thisofferstheadvantagethattherailB2canbeslidinsidetherailA1
toadjustthelengthofrailB2accuratelytothelengthoftheunit.Inthiswayitisnotnecessarytospend
timeandeffortcuttingtherailB2.
MountthelowerrailsC3
andD4onthebacksideoftheunit.
Note:RailD4fitsintotherailC3,andthisofferstheadvantagethattherailD4canbeslidinsidetherailC3
toadjustthelengthofrailD4accuratelytothelengthoftheunit.Inthiswayit
isnotnecessarytospend
timeandeffortcuttingtherailD4.
Mountverticalrail–E5‐withtheroofslopeateachendoftheunit.
MounttherailsYandZontheunitwiththecentre‐lineoftherailsexactlyoverthecentre‐lineoftheunit.
Itislongitudinalonthemiddleoftheunitstoholdthetrapezoidalroofplates.
Notice,thatrailZfitsoverthelowerrailY,andthisofferstheadvantagethattherailZcanbeslidedonthe
railYtoadjustthelengthofrailZaccuratelyto
thelengthoftheunit.Inthiswayitisnotnecessarytospent
timeandeffortoncuttingtherailZ.
Itisimportanttoplaceascrewineachhole–eventhoughthenumberofholesforscrewsseemstobe
verylarge,ascrewineach
holeisnecessaryasthestressontheroofduringstormyweatherisextremely
high.
8.4Roofoverhangalongthelongsidesoftheunit
Theroofplatesarelongerthanthewidthoftheunittoensuresufficientoverhangalongthesidesofthe
unit.
Theoverhangis100mmalongeachsideofthesmallestunit–size10.
Theoverhangis150mmalongeachsideoftheunits–size15,20,
25.
Theoverhangis175mmalongeachsideofthebiggestunits–includingsize30.
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8.5Calculationoftheoverhangattheendsoftheunit.Mount overhangprofile–G1.
Theroofmustbebetween200and400mmlongerthanthelengthoftheunittosecurearoofoverhang
between100mmand200mmattheeachofthe2endsoftheunit,andthelengthofthisoverhangmust
becalculatedbeforethefirstroofplate
ismounted.
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