Nortek 1011391 Installation Instructions Manual
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Page 1INSTALLATION INSTRUCTIONSRoof Curb Kit for R7TQ 072/090/120 SeriesCurb sides are constructed of 16-gauge coated steel andwooden nailers. All hardware necessary to assemble thecurb is provided; installation hardware must be field supplied.Vertical discharge roof curbs include dividers that allow forinserting ductwork down from the top. Curbs are constructedof 16-gauge coated steel and 2 × 4 wooden nailers.TABLE 1. CURB IDENTIFICATION1011391 8” 203.2 mm1011388 14” 355.6 mm1011389 18” 457.2 mm1011390 24” 609.6 mm• Assembly and installation of the curb are theresponsibility of the installer.• Before installation, verify that the curb ordered is theappropriate one for the unit. Refer to Tables 1, 2 and 3.• Depending on the weight and the roof structure, treadmaterial may be required under the rails. Curb andequipment must be level.• If installing more than one system, it is recommended tominimize structural span deflection to discourage soundtransmission.• Mounting hardware and flashing must be field supplied.• Check the roof curb for squareness. The curb must beadjusted so that the diagonal measurements are equalwithin a tolerance of ±1/8” (±3 mm).• Level the roof curb. To ensure a good weatherproof sealbetween the unit curb cap and the roof curb, the roof curbmust be leveled in both directions with no twist end toend. Shim as required and secure curb to the roof deckbefore installing flashing.• Install field-supplied flashing. If ductwork is being installedfrom the top, slide the ductwork down into the dischargeand return air openings. Ductwork should be sized slightlysmaller with a minimum 3/4” duct flange that will rest onand be attached to all sides of the duct connection. Seethe system installation manual for ductwork requirements.• Apply 1/4” x 1-1/4” foam sealant tape to both thetop surface of the curb rails and the top surface ofthe perimeter of the integral dividers, being sure tomake good butt joints at all corners. The sealanttape must be applied to prevent water leakage intothe curb area due to blown rain and capillary action.IMPORTANT: Verify that the unit will be placed in the correctairflow orientation to mate properly with the discharge andreturn air openings.TABLE 2. CURB PART NUMBERSHEIGHT ITEM # P/N DESCRIPTION QTY8”1 1006197 END 22 1006198 CONTROL SIDE 13 1006199 FILTER ACCESS SIDE 114”1 1006186 END 22 1006187 CONTROL SIDE 13 1006188 FILTER ACCESS SIDE 118”1 1006191 END 22 1006192 CONTROL SIDE 13 1006193 FILTER ACCESS SIDE 124”1 1006194 END 22 1006195 CONTROL SIDE 13 1006196 FILTER ACCESS SIDE 1P/N ITEM DESCRIPTION QUANTITYSee CurbPart NumberTable1 Curb End 22 Curb Filter Access side 13 Curb Control side 1TABLE 3. BILL OF MATERIALS1006182 4 Support 11006185 5 RA Support 11006184 6 SA Support 1600255 7 Screws S.M. 10AB x 1/2” 416247 8 5/16”-18 x 3/4” Hex CapScrews16612001 9 Washers 321035 10 5/16”-18 Hex Nut 1666302 11 Gasket 1/4” x 1 1/4” 50 FTFigure 1. Support and Gasket Locations564#7 FastenerlocationsBottom side viewof supportsRefer to Table 3for item numbersForm R7TQ-072/090/120 (03-18) PN1012100A, |
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