Raypak Xtherm 1505A Installation & Operating Instructions Manual

Also see for Xtherm 1005A: Installation and operation manual

32Fig. 25: Horizontal Through-the-Wall VentingFig. 26: Alt. Horizontal Through-the-Wall VentingNOTE: While a drain connection is required in thevent of all XTherm installations, the drain can be ac-complished in several different ways. The figures inthis manual show the drain in a vent tee, however,this can also be accomplished using an inline collec-tor for condensing stacks or an inline vertical orhorizontal collector available from several of thelisted vent manufacturers.Fig. 27: Horizontal Through-the-Wall Direct VentingCAUTION: This venting system requires theinstallation of a condensate drain in the vent pipingper the vent manufacturer’s instructions. Failure toinstall a condensate drain in the venting system maycause a non-wrrantable failure. Condensate is acidicand highly corrosive.InstallationThese installations utilize the heater-mounted blowerto vent the combustion products to the outdoors.Combustion air is taken from inside the room and thevent is installed horizontally through the wall to the out-doors. Adequate combustion and ventilation air mustbe supplied to the equipment room in accordance withthe NFGC (U.S.) or B149 (Canada).The total length of the horizontal through-the-wall fluesystem should not exceed 75 equivalent ft in length. Ifhorizontal run exceeds 75 equivalent ft, an appropri-ately sized variable-speed extractor must be used.Each elbow used is equal to 10 ft of straight pipe. Thiswill allow installation in one of the four followingarrangements:• 75’ of straight flue pipe• 65’ of straight flue pipe and one elbow• 55’ of straight flue pipe and two elbows• 45’ of straight pipe and three elbowsThe vent cap is not considered in the overall length ofthe venting system.Horizontal Through-the-Wall andDirect Venting (Category IV)