Division 22 23 Ebook Page 76 FOAMULAR XPS Pipe Insulation Installation Guidelines

PubNo.10013974-A.Rev.9/2015 Page 6 of 24 FOAMULAR!XPS!Pipe!Insulation Installation!Guidelines 9. Contraction/expansionjointsshallbeinstalledpertheMICAorIIRAManualorapproved alternatedesign.Theappropriatedesignerorengineermustspecifythespacingof contraction/expansionjointsforeachsystem.(Figure9&14,AppendixA) 10. AllowmasticstodrybeforeinstallingPVCorMetalJacketing. 11. Sealaroundprotrusions,suchasvalvestemswithafullbeadofsiliconesealant. 12. XPSInsulationshallbeprotectedfromprolongedexposuretoUVlightand weatherbeforeandafterinstallation. B. Outdoor!General! 1. Outdoorjacketingshalloverlapaminimumof2atbothbuttandlongitudinaljoints. 2. Outdoorjacketingshallbepositionedwiththeoverlapfacingdownwardateitherthe3oclock or9oclockposition. 3. Bandsshallbeonamaximum9oncenterspacing. 4. Endjointsshallbesecuredwithbandsandsealsdirectlyoverthejoint. 5. Outdoorsectionsofjacketingandbandingshallbeinstalledinaworkmanlike mannerbyskilledandexperiencedworkerswhoareregularlyengagedinchilled waterorrefrigerationinsulationwork. C. Single!Layer!Systems (Systemswithinsulationthickness2- 1 / 2 andless) Note: InadditiontothespecificationsoutlinedintheGeneralsectionabove,thefollowingspecification shallbefollowedforsinglelayersystems. 1. Staggerinsulationhalfsectionssothatbuttjointsarestaggeredbetweentopandbottomhalf sectionsby6to18inchesoninsulationlayersthatdonothaveavaporretarderfactoryapplied tothem.Orientlongitudinaljointsbetweenhalfsectionsinthe3and9o'clockpositiononthe pipe.(Figure10,AppendixA) 2. Sealalljointsfulldepthwithjointsealantandspreadtouniformthicknesssothatjointsappear tightanduniform.(Figure3,AppendixA) 3. Installan18lengthhalfroundpipesectiononbottomofallpipehangersaddleswithafullhalf roundpipesectiononthetoptomaintainastaggeredjointthroughthepipehangersaddle. (Figure8,AppendixA) 4. Insulationandvaporretardershallbesecuredwithfiberreinforcedtape.Usea circumferentialoverlapon12centerswheninstallinginsulationwithfactoryappliedfacing. 5. Fibertapeshallbeappliedtotheexterioroftheinsulation/vaporretardersystem. 6. Vaporretardershouldbeorientedsuchthatthelongitudinallapjointoverlapsfacingdownward ateitherthe3or9oclockposition.LapjointshallbesealedusingSSLtapeasatemporary bond.(Figure6,AppendixA) 7. Onfactoryappliedvaporretardersystem,lapjointshallbesealedwithSSLtape.(Figure5, AppendixA) 8. Buttjointsshallbecoveredwithvaporretardertapeusingthesame3or9oclockorientationas thelongitudinalseamonthevaporbarrier.

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