Carrier 58UVB series Installation, Start-up, And Operating Instructions Manual

Also see for 58UVB series: Owner's information manual Owner's manual Installation, start-up, and operating instructions

Contents

Carrier 58UVB series Installation, Start-up, And Operating Instructions Manual Manual pdf 14 page image

14TABLE 3—MAXIMUM CAPACITY OF PIPE*NOMINALIRONPIPESIZE(IN.)INTERNALDIAMETER(IN.)LENGTH OF PIPE (FT)10 20 30 40 501/2 0.622 175 120 97 82 733/4 0.824 360 250 200 170 1511 1.049 680 465 375 320 2851---1/4 1.380 1400 950 770 660 5801---1/2 1.610 2100 1460 1180 990 900*Cubic ft of gas per hr for gas pressures of 0.5 psig (14 ---in. wc) or less,and a pressure drop of 0.5 ---in. wc (based on a 0.60 specific gravitygas). Ref: Table 9 ---2 NFPA 54 ---2002.NOTE: The gas valve inlet pressure tap connection is suitable touse as test gauge connection providing test pressure DOES NOTexceed maximum 0.5 psig (14--in. wc) stated on gas valve. (SeeFig. 51.)Piping should be pressure and leak tested in accordance withNFGC in the United States or NSCNGPIC in Canada, local, andnational plumbing and gas codes before the furnace has beenconnected. If pressure exceeds 0.5 psig (14--in. wc), gas supplypipe must be disconnected from furnace and capped beforepressure test.If test pressure is equal to or less than 0.5 psig (14--in. wc), turnoff electric shutoff switch located on gas valve before test. It isrecommended that ground joint union be loosened beforepressure testing. After all connections have been made, purgelines and check for leakage at furnace prior to placing it intoservice.The gas supply pressure shall be within the maximum andminimum inlet supply pressures marked on the rating plate withthe furnace burners ON at HI--HEAT and OFF.Step 7 —Electrical ConnectionsSee Fig. 19 for field wiring diagram showing typical field 115--vand 24--v wiring. Check all factory and field electricalconnections for tightness.ELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personalinjury or death.Blower access door switch opens 115--v power tofurnace control. No component operation can occur. Donot bypass or close switch with panel removed.! WARNINGUNIT MAY NOT OPERATEFailure to follow this caution may result in intermittentunit operation.Furnace control must be grounded for proper operationor control will lock out. Control is grounded throughgreen/yellow wire connected to gas valve and burnerbox screw.! WARNING115--V WIRINGBefore proceeding with electrical connections, make certain thatvoltage, frequency, and phase correspond to that specified onfurnace rating plate. Also, check to be sure that service providedby power supply is sufficient to handle load imposed by thisequipment. Refer to rating plate or Table 4 for equipmentelectrical specifications.Make all electrical connections in accordance with NationalElectrical Code (NEC) ANSI/NFPA 70--2002 and any local codesor ordinances that might apply. For Canadian installations, allelectrical connections must be made in accordance with CanadianElectrical Code CSA C22.1 or authorities having jurisdiction.Field--supplied wiring shall conform with the limitations of 63_F(33_C) rise.The furnace must be electrically grounded in accordance withlocal codes; or in the absence of local codes, with the NationalElectric Code ANSI/NFPA 70 and/or the Canadian Electric Code,CSA C22.1, Part I, if an external electrical source is utilized.Use a separate branch electrical circuit containing a properly sizedfuse or circuit breaker for this furnace. See Table 4 for wire sizeand fuse specifications. A disconnecting means must be locatedwithin sight from and readily accessible to furnace.NOTE: Proper polarity must be maintained for 115--v wiring. Ifpolarity is incorrect or furnace is not grounded properly, furnacecontrol status code indicator light will flash rapidly and furnacewill NOT operate.FIRE HAZARDFailure to follow this warning could result inintermittent operation or performance satisfaction.Do not connect aluminum wire between disconnectswitch and furnace. Use only copper wire. (See Fig. 20.)! WARNING58UVB