Carrier 58CTW Installation, Start-up, Operating And Service And Maintenance Instructions

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Carrier 58CTW Installation, Start-up, Operating And Service And Maintenance Instructions Manual pdf 35 page image

35Caution!! For the following applications, use the minimum vertical heights as specified below.For all other applications, follow exclusively the National Fuel Gas Code.FURNACEORIENTATIONVENT ORIENTATION FURNACE INPUT(BTUH/HR)MIN. VENTDIAMETERIN. (mm)*MIN. VERTICAL VENTHEIGHTFT. (M)**Downflow Vent elbow left, then upFig. 40 132,000 110,000 5 (127) 12 (3.6)Horizontal Left Vent elbow right, then upFig. 43 132,000 5 (127) 7 (2.1)Horizontal Left Vent Elbow upFig. 45 132,000 5 (127) 7 (2.1)Downflow Vent elbow up then leftFig. 38 110,000 5 (127) 10 (3.0)Downflow Vent elbow up, then rightFig. 41 110,000 5 (127) 10 (3.0)NOTE: All vent configurations must also meet National Fuel Gas Code venting requirements NFGC.*4 ---in. (102 mm) inside casing or vent guard**Including 4 in. (102 mm) vent section(s)The horizontal portion of the venting system shall slope upwardsnot less than 1/4--in. per linear ft. (21 mm/m) from the furnace tothe vent and shall be rigidly supported every 5 ft. (1.5 M) or lesswith metal hangers or straps to ensure there is no movement afterinstallation.Sidewall VentingThis furnace is not approved for direct sidewall horizontalventing.Per section 12.4.3 of the NFPA 54/ANSI Z223.1--2012, anylisted mechanical venter may be used, when approved by theauthority having jurisdiction.Select the listed mechanical venter to match the Btuh input of thefurnace being vented. Follow all manufacturer’s installationrequirements for venting and termination included with the listedmechanical venter.START--UP, ADJUSTMENT, AND SAFETYCHECKGeneralFIRE HAZARDFailure to follow this warning could result in personal injury,death or property damage.This furnace is equipped with manual reset limit switches inthe gas control area. The switches open and shut off power tothe gas valve, if a flame rollout or overheating conditionoccurs in the gas control area. DO NOT bypass the switches.Correct problem before resetting the switches.! WARNING1. Maintain 115--v wiring and ground. Improper polarity willresult in rapid flashing LED and no furnace operation.2. Make thermostat wire connections at the 24--v terminalblock on the furnace control. Failure to make proper con-nections will result in improper operation. (See Fig. 25 --34.)3. Gas supply pressure to the furnace must be greater than4.5--In. W.C. (0.16 psig ) but not exceed 14--In. W.C. (0.5psig).4. Check all manual--reset switches for continuity.5. Replace blower compartment door. Door must be in placeto operate furnace.6. Setup switch descriptions The variable speed furnace con-trol has DIP switches to select thermostat staging, bloweroff delay timings, air flow selection and other operationalor service related functions. (See Fig. 26, 55 and Table52.)CUT HAZARDFailure to follow this caution may result in personal injury.Sheet metal parts may have sharp edges or burrs. Use careand wear appropriate protective clothing, safety glasses andgloves when handling parts, and servicing furnaces.CAUTION!REGULATOR COVER SCREWPLASTIC ADJUST SCREWLOW STAGEGAS PRESSUREREGULATOR ADJUSTMENTMANIFOLDPRESSURE TAPINLETPRESSURE TAPON/OFF SWITCHREGULATOR SPRINGHIGH STAGE GASPRESSURE REGULATORADJUSTMENT1/2˝ NPT OUTLET1/2˝ NPT INLETA04167Fig. 49 -- Redundant Automatic Gas Control Valve