Installation And Maintenance For FRP Ductwork Model

Installation and Maintenance forFRP Ductwork ModelWARNING!These installation instructions are for qualified and experienced technicians in the H.V.A.C.and Fire Protection field only. Failure to follow these specific instructions may cause personalinjury. Installation or maintenance technicians must read the entire manual prior toattempting installation or maintenance of product.Installation should take approximately 10-20 minutes per head. (Not Including cure time.)Retain these instructions for future use.Tools Required3/8” Hand Drill2” HolesawDisc SanderPutty KnifeTorque Wrench (1-50 inch-lbs.)Safety GlassesParticle MaskMixing ContainerVinyl GlovesDuct TapeClean RagsSafety Face Shield50 Grit SandpaperMaterials RequiredResin – Dion 9300 FR Putty with 3% Antimony TioxidePromoter – Methyl Ethyl Detone PeroxideFRP Ductwork Model Installation and Maintenance Manual – 28

CAUTION!Safety glasses, vinyl gloves and particle mask must be worn by installing technician duringFLEXHEAD FRP Ductwork Model installation.PART I – INSTALLATION OF BOTTOM FRP MOUNTING BLOCK1FlexHead LocationDetermine desirable location for FLEXHEADunit in FRP ductwork. FLEXHEAD unit must beaccessible for periodic inspection. Forrecommended guidelines and standards forprotection systems in industrial exhaust systemssee Factory Mutual loss prevention data sheets7-78, article 2-4. Once desired location is determined drill a two (2) inch hole in FRP duct withholesaw. (See Fig. 1).Fig. 12Fig. 2Surface PreparationPrepare area around 2 inch hole in FRP bygrinding down surface of duct with grindingwheel. Continue grinding process until all exteriorpaint is removed, and FRP duct surface is rough.Mounting area on FRP duct must be rough forproper adhesion of FLEXHEAD bottom mountingblock, a smooth surface on FRP duct will result ina poor bond between duct and mounting block.Total prepared area on FRP duct should beapprox. 6 in. x 6 in. Upon completion of grindingprocess wipe area clean of dust with clean oil freecloth. (See Fig. 2).3Apply ResinRoughen bottom of FRP block with 50 gritsandpaper. Apply a 1/4 inch layer of bondingresin to underside of FRP mounting block,making sure the block surface is oil free.Completely cover entire surface of bottom blockwith bonding resin. (See Fig. 3A).Apply 1/4 inch layer bonding resin to6 in. x 6 in. prepared area on FRP duct. (SeeFig. 3B).Fig. 3AFRP Ductwork Model Installation and Maintenance Manual – 29

Fig. 3BWARNING!FRP bonding resins are flammableproducts and should be kept away fromall sources of ignition, and stored in a cooldry place. Avoid contact of resin andhardener with skin, eyes or mucousmembranes. Good ventilation should bemaintained during process to reduce firehazard and minimize breathing of resinvapors. For additional information onthese products consult material and safetydata sheets provided by manufacturer.4Mounting Bottom BlockPlace bottom FLEXHEAD block ontoprepared FRP surface, making surecorresponding holes in block and duct align.Gently press block down onto duct to ensurethat no air pockets exist between duct andmounting block. (See Fig. 4). Apply additionalbonding resin along with any overflow resin toeach of the four (4) seams between bottomblock and FRP duct. All four (4) sides of bottomblock should have “built up shoulders” for extrasupport. (See Fig. 5).Fig. 4Fig. 5FRP Ductwork Model Installation and Maintenance Manual – 30

5Hardening or CuringSecure bottom mounting block to FRPduct during drying or “curing” period by thefollowing method. Using a two (2) to three (3)foot length of standard silver duct tape, attachone end of tape to top or side of FRP duct.Then stretch length of tape across bottommounting block, and attach other end of tapeto FRP duct. When securing do not allowbottom block to move out of correct alignment(see Fig. 6). Resin must be allowed to harden orcure for approx. one (1) hour, this will varyaccording to weather conditions, temperature,and amount of promoter used. ConsultReichhold Chemicals, Inc. Dion 9300 ProductBulletin 33591 for proper curing times (REFERTO ATTACHMENT “A” FOR DETAILS). Whencuring period is complete remove duct tape.Installation of bottom block is complete.Fig. 6NOTE: Resin should be allowed to dry for aperiod of 4 hours before subjected to anyexcessive stress.FRP Ductwork Model Installation and Maintenance Manual – 31

PART II – INSTALLATION OF TOP FRP MOUNTING BLOCK1Connect FlexHead to Sprinkler SystemConnect one (1) inch stainless steel flexiblehose of FLEXHEAD to one (1) inch black ironpipe union of fire protection system inaccordance to N.F.P.A. standards, state andlocal codes (See Fig. 7).Fig. 72Connect FlexHead to BottomMounting BlockInsert bag/gasket assembly over bolt holesmaking sure dual polybags protrude through 2inch hole in bottom mounting block.3Connect FlexHead to TopMounting BlockA. Place top FLEXHEAD mounting block ontopreviously installed bottom mounting blockwith gasket making sure that sprinkler headsection of the FLEXHEAD unit is inserted intotwo (2) inch hole in duct, and that the four (4)stainless steel bolts of bottom mounting blockalign with corresponding bolt holes in topmounting block. Angle of flexible hose shouldnot exceed 90 (Fig. 8).B. Place one (1) stainless steel washer and one(1) stainless steel nut onto each of the four (4)stainless steel bolts. Tighten each of the nutshand tight onto the block. Tightening processof nuts onto the mounting block should bedone in a diagonal process to ensure equaldistribution of pressure throughout themounting block. Nuts should be tightened to15 in. -lb using a torque wrench. (See Fig. 9).DO NOT OVER TIGHTEN NUTS ONTO BLOCK.Installation of FLEXHEAD is complete.Fig. 8Fig. 9FRP Ductwork Model Installation and Maintenance Manual – 32

CAUTION!Safety glasses, vinyl gloves and particle mask must be worn by installing technician duringFLEXHEAD FRP Ductwork Model installation.WARNING!During maintenance or inspection of FLEXHEAD product, facility fire protection systemMUST BE INACTIVE. DO NOT ATTEMPT INSPECTION OR MAINTENANCE OF FLEXHEAD PRODUCTWHEN FIRE PROTECTION SYSTEM IS “LIVE”.MAINTENANCE AND INSPECTION OF FRP DUCTWORK MODEL SPRINKLER HEAD1Once fire protection and exhaust systemare inactive, proceed with inspection ofFLEXHEAD unit.Fig. 102Remove the four (4) stainless steel nutsand washers from top mounting block.(See Fig. 10)3Now lift top mounting block from bottommounting block and bolts, by holding ontobase area of stainless steel hose (see Fig. 11).Fig. 114Inspect sprinkler head and poly bagsection of FLEXHEAD. If damage exists inouter poly bag only, replace bag/gasketassembly. If damage exists through both polybags replace bag/gasket assembly and inspectwax coated sprinkler head. IF ANY DAMAGEEXISTS IN SPRINKLER HEAD REPLACE HEADAND BAG/GASKET ASSEMBLY AT THIS TIME inaccordance to N.F.P.A. regulations andguidelines.5Once inspection and maintenance ofFLEXHEAD has been completed, reinserttop mounting block onto bottom block aligningcorresponding sprinkler head and bolt holes.FRP Ductwork Model Installation and Maintenance Manual – 33

6Replace the four (4) stainless steelwashers and nuts onto the four (4)stainless steel bolts accordingly. Hand tighteneach of the (4) nuts onto the block. Thetightening sequence of nuts onto themounting block should be done in a diagonalmanner to ensure equal distribution ofpressure throughout the mounting block. Nutsshould be tightened to 15 in. -lb using atorque wrench. (See Fig. 12). DO NOT OVERTIGHTEN NUTS ONTO BLOCK. MAINTENANCE OFFLEXHEAD IS COMPLETE. (Same tighteningprocess as Fig. 9).Fig. 12FRP Ductwork Model Installation and Maintenance Manual – 34

FRP Ductwork Model FRP Ductwork Model Installation and Maintenance Manual – 28 . Reichhold Chemicals, Inc. Dion 9300 Product . MAINTENANCE AND INSPECTION OF FRP DUCTWORK MODEL SPRINKLER HEAD Fig. 10 Fig. 11. FRP Ductwork Model Installation and Maintenance Manual – 34 6 Replace the fo