Carrier Series 100 Installation, Start-up, And Operating Instructions Manual

Also see for 58MXB Series: User's information manual Owner's manual

CUT HAZARDFailure to follow this caution may result in minor personalinjury.Use care when cutting support rods in filters to protect againstflying pieces and sharp rod ends. Wear safety glasses, gloves,and appropriate protective clothing.UNIT MAY NOT OPERATEFailure to follow this caution may result in intermittent unitoperation.For airflow requirements above 1800 CFM, see Air Deliverytable in Product Data literature for specific use of single sideinlets. The use of both side inlets, a combination of 1 side andthe bottom, or the bottom only will ensure adequate return airopenings for airflow requirements above 1800 CFM.NOTE: Side return-air openings can ONLY be used in UPFLOWconfigurations. Install filter(s) as shown in Fig. 26.Bottom return-air opening may be used with all 4 orientations.Filter may need to be cut to fit some furnace widths. Install filteras shown in Fig. 27.NOTE: Remove and discard bottom closure panel when bottominlet is used.Step 6—Bottom Closure PanelThese furnaces are shipped with bottom enclosure panel installedin bottom return-air opening. This panel MUST be in place whenside return air is used.To remove bottom closure panel, perform following:1. Tilt or raise furnace and remove 2 screws holding front fillerpanel. (See Fig. 28.)2. Rotate front filler panel downward to release holding tabs.3. Remove bottom closure panel.4. Reinstall front filler panel and screws.Step 7—Gas PipingGas piping must be installed in accordance with national and localcodes. Refer to current edition of NFGC in the United States.Canadian installations must be made in accordance with NSCNG-PIC and all authorities having jurisdiction.Gas supply line should be a separate line running directly frommeter to furnace, if possible. Refer to Table 5 for recommendedgas pipe sizing. Risers must be used to connect to furnace and tometer. Support all gas piping with appropriate straps, hangers, etc.Use a minimum of 1 hanger every 6 ft. Joint compound (pipe dope)should be applied sparingly and only to male threads of joints. Pipedope must be resistant to propane gas.Fig. 26—Filter Installed for Side InletA93045FILTERRETAINERWASHABLEFILTERFig. 27—Bottom Filter ArrangementA00290WASHABLEFILTERFILTERSUPPORTFILTERRETAINER171⁄2-IN. WIDECASINGS ONLY:INSTALL FIELD-SUPPLIEDFILTER FILLER STRIPUNDER FILTER.1″24 1/ 2″3″21-IN. WIDECASINGS ONLY:SUPPORT RODS (3)EXTEND 1/4" ON EACHSIDE OF FILTER ANDREST ON CASING FLANGEFig. 28—Removing Bottom Closure PanelA93047BOTTOMCLOSUREPANELFRONT FILLERPANEL23→