Carrier 40GRQ Owner's Manual
Also see for 38GRQ: Owner's manualInstallation instruction
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Pipe expanding methodNote:Improper pipe expanding is the main cause of refrigerant leakage. Please expandthe pipe according to the following steps:A: Cut the pipethe distance of indoor unit andoutdoor unit.pipepipe cutterleaning uneven burrB: Remove the burrsprevent the burrs from getting intothe pipe.downwardspipeshaperC: Put on suitable insulating pipeconnection pipe and outdoor valve;install the union nut on the pipe.union pipepipeE: Expand the portdiameter, please refer to the sheetbelow:expanderhardmoldpipeF: InspectionIf there is any blemish, expand theport again according to the stepsabove.the length is equalimproper expandingleaning damagedsurface crack uneventhicknesssmooth surfaceOuter diameter(mm (in ))A(in/mm)Max Min1/20 in (1.3 mm) 0.02 in (0.7 mm)3/50 in (1.6 mm) 1/24 in (1 mm)1/24 in (1 mm)2/25 in (2.2 mm)0.07 in (1.8 mm)1/10 in (2.4 mm)-38- |
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