g43 service manual - Heating and Air Parts

More documents

Recommendations

Info

Details of Intake and Exhaust Piping Terminations forDirect Vent InstallationsNOTE − In Direct Vent installations, combustion air is takenfrom outdoors and flue gases are discharged to outdoors.Intake and exhaust pipes may be routed either horizontallythrough an outside wall or vertically through the roof. In atticor closet installations, vertical termination through theroof is preferred. Figures 24 through 32 show typical terminations.1. Exhaust and intake exits must be in same pressurezone. Do not exit one through the roof and one on theside. Also, do not exit the intake on one side and theexhaust on another side of the house or structure.2. Intake and exhaust pipes should be placed as closetogether as possible at termination end (refer to illustrations).Maximum separation is 3" (76mm) on roofterminations and 6" (152mm) on side wall terminations.3. On roof terminations, the intake piping should terminatestraight down using two 90° elbows (See figure24).4. Exhaust piping must terminate straight out or up asshown. In rooftop applications, a reducer may be requiredon the exhaust piping at the point where it exitsthe structure to improve the velocity of exhaust awayfrom the intake piping. See table 14.NOTE − Care must be taken to avoid recirculation ofexhaust back into intake pipe.TABLE 14EXHAUST PIPE TERMINATION SIZE REDUCTIONG43UFMODEL Exhaust Pipe Size Termination Pipe Size045 and 070 2", 2−1/2", 3" or 4" 1−1/2"090 2", 2−1/2", 3" or 4" 2"110 2", 2−1/2", 3" or 4" 2"*135 3" or 4" 2"**Approved 3" concentric termination kit terminates with 2−5/8" ID pipe.Inches(mm)8" (203) MIN12" (305) ABOVEAVERAGE SNOWACCUMULATION3(76) MAX.SIZE TERMINATIONPIPE PER TABLE 14.UNCONDITIONEDATTIC SPACE1/2" (13) FOAMINSULATION INUNCONDITIONEDSPACE1/2 (13) ARMAFLEXINSULATION INUNCONDITIONED SPACEFIELD−PROVIDEDREDUCER MAYBE REQUIREDTO ADAPTLARGER VENTPIPE SIZE TOTERMINATIONInches (mm)OUTSIDEWALL12 (305) MAX.(unless supported)1−1/2 (38) PVC6 (152)MAXIMUM8 (203)MINIMUM1/2" (13)ARMAFLEXINSULATIONSIZETERMINATIONPIPE PERTABLE 14.2 (51) PVCCOUPLINGTOP VIEWWALL RING KIT(15J74)FIGURE 255. On field supplied terminations for side wall exits, exhaustpiping should extend a maximum of 12 inches(305mm) beyond the outside wall unless supported.Intake piping should be as short as possible. See figure25.6. On field supplied terminations, a minimum separationdistance between the end of the exhaust pipe and theend of the intake pipe is 8 inches (203mm).7. If intake and exhaust piping must be run up a side wallto position above snow accumulation or other obstructions,piping must be supported every 3 ft. (.9m) asshown in figure 18. Refer to figure 28 for proper pipingmethod. In addition, WTK wall termination kit must beextended for use in this application. See figure 31.When exhaust and intake piping must be run up anoutside wall, the exhaust piping must be terminatedwith pipe sized per table 14.The intake piping may beequipped with a 90° elbow turndown. Using turndownwill add 5 feet (1.5m) to the equivalent length of thepipe.8. Based on the recommendation of the manufacturer, amultiple furnace installation may use a group of up tofour termination kits WTK assembled together horizontally,as shown in figure 30.3" (76) OR2" (51) PVCPROVIDE SUPPORTFOR INTAKE ANDEXHAUST LINESDIRECT VENT ROOF TERMINATION KIT(15F75 or 44J41)FIGURE 24Page 28
EXHAUSTTERMINATIONINTAKETERMINATIONEXHAUST12" (305) ABOVEAVERAGE SNOWACCUMULATIONINTAKEFIGURE 26Inches (mm)FIELD−PROVIDEDREDUCER MAY BE REQUIREDTO ADAPT LARGER VENTPIPE SIZE TO TERMINATIONDIRECT VENT CONCENTRIC ROOFTOP TERMINATION(71M80, 69M29 or 60L46)Inches (mm)FIELD−PROVIDEDREDUCER MAYBE REQUIRED TOADAPT LARGERVENT PIPE SIZETO TERMINATIONEXHAUSTINTAKEFIGURE 27INTAKETERMINATIONEXHAUSTTERMINATION12" (305) Min.above grade.DIRECT VENT CONCENTRIC WALL TERMINATION(71M80, 69M29 or 60L46)Inches(mm)UNCONDITIONEDSPACEOUTSIDE WALL12" (305) MAX. for 2" (51)(unless supported)8 (203)MIN.INTAKEVENT1/2" (13) Foam Insulationin Unconditioned SpaceFIELD−PROVIDEDREDUCER MAYBE REQUIREDTO ADAPTLARGER VENTPIPE SIZE TOTERMINATIONInches (mm)EXHAUSTVENTINTAKEVENTDIRECT VENT WALL TERMINATION KIT(22G44, 44J40, 30G28 or 81J20)FIGURE 29Inches (mm)5"(127)18" MAX.(457)FIGURE 30EXHAUST VENTFront ViewSide ViewEXHAUST VENT5−1/2"(140)INTAKE VENTOUTSIDE WALL12"(305)Front ViewEXHAUST VENTINTAKEVENTSide ViewOPTIONAL VENT TERMINATION FOR MULTIPLE UNITINSTALLATION OF DIRECT VENT WALL TERMINATION KIT WTKPROVIDE SUPPORTFOR INTAKE ANDEXHAUST LINES EVERY36" (914)FIELD−PROVIDEDREDUCER MAYBE REQUIRED TOADAPT LARGERVENT PIPE SIZETO TERMINATION1/2" (13) FOAMINSULATION INUNCONDITIONEDSPACESee venting table 12 for maximum ventinglengths with this arrangement.FIGURE 2812" (305) ABOVEAVERAGE SNOWACCUMULATION1/2" (13) FOAMINSULATIONSIDE VIEWDIRECT VENT WALL RING TERMINATION(15F74)SIZETERMINATIONPIPE PERTABLE 14.Page 29
Page 1 and 2: Service LiteratureCorp. 0416−L4Re
Page 3 and 4: OPTIONAL ACCESSORIES − MUST BE OR
Page 5: BLOWER/WATTS DATAG43UF−36B−070
Page 10 and 11: TABLE 1SureLight BOARD J156 (J2) TE
Page 12 and 13: SURELIGHT ® INTEGRATED CONTROL BOA
Page 14 and 15: B"Ignitor LocationIGNITOR TYPE A" B
Page 16 and 17: HONEYWELL VR8205 SERIES GAS VALVEPR
Page 18 and 19: CAI & COLD END HEADER BOX ASSEMBLYI
Page 20 and 21: A−Vent Piping GuidelinesThe G43UF
Page 22 and 23: B−Joint Cementing ProcedureAll ce
Page 24 and 25: TYPICAL AIR INTAKE PIPE CONNECTIONS
Page 26 and 27: General Guidelines for Vent Termina
Page 30: INTAKEAIR12" (305) MAX. for 2" (51)
Page 33 and 34: Gas Valve OperationFigure 14 shows
Page 35 and 36: Checks of manifold pressure are mad
Page 37 and 38: C−External Static Pressure1 − M
Page 39 and 40: 16 − Mark and disconnect any rema
Page 41 and 42: G43UF Units with SureLight Control
Page 43 and 44: COOLING SEQUENCE OF OPERATIONSureLi
Page 45 and 46: WIRING DIAGRAM AND SEQUENCE OF OPER
Page 47 and 48: HEATING SEQUENCE CONTINUEDIgnition
Page 49 and 50: CONTINUOUS HEAT SPEED FAN SEQUENCE
Page 51 and 52: PROBLEM 1: UNIT FAILS TO OPERATE IN
Page 53 and 54: PROBLEM 4: UNIT FAILS TO FIRE IN TH
Page 55: PROBLEM 6: CONTROL SIGNALS LOW FLAM

g43 service manual - Heating and Air Parts

Create successful ePaper yourself

Delete template?

Save as template?