Carrier 58MCA Installation, Start-up, And Operating Instructions Manual

Also see for GAS FURNACE 58MXA: User's information manual User manual Service and maintenance instructions User's information manual User's information manual

Carrier 58MCA Installation, Start-up, And Operating Instructions Manual Manual pdf 28 page image

Step 3—Concentric Vent and Combustion-AirTermination Kit InstallationNOTE: If these instructions differ from those packaged withtermination kit, follow kit instructions.Combustion-air and vent pipes must terminate outside structure. Afactory accessory termination kit must be installed in 1 of theinstallations shown in Fig. 30, 31, 32, 33, or 34. Four terminationkits are available.1. The 2-in. termination bracket kit is for 1-in., 1-1/2 in., and2-in. diameter 2-pipe termination systems.2. The 3-in. termination bracket kit is for 2-1/2 in., 3-in., and4-in. diameter 2-pipe termination systems.3. The 2-in. concentric vent/air termination kit is for 1-in., 1-1/2in., 2-in., and 2-1/2 in. diameter pipe systems when singlepenetration of wall or roof is desired.4. The 3-in. concentric vent/air termination kit is for 2-1/2 in.,3-in., and 4-in. diameter pipe systems when single penetrationof wall or roof is desired.NOTE: Shaded parts in Fig. 30, 31, 32, 33, and 34 are consideredto be termination. These components should NOT be countedwhen determining pipe diameter. Roof termination is preferredsince it is less susceptible to damage, has reduced chances to takein contaminants, and has less visible vent vapors. (See Fig. 30 or31.) Sidewall termination may require sealing or shielding ofbuilding surfaces with a corrosive resistance material due tocorrosive combustion products of vent system.EXTENDED EXPOSED SIDEWALL PIPESSidewall combustion-air and vent pipe terminations may beextended beyond area shown in Fig. 33 or 34 in outside ambient byinsulating pipes as indicated in Table 7.1. Determine combustion-air and vent pipe diameters, as statedabove, using total pipe length and number of elbows.2. Using winter design temperature (used in load calculations),find appropriate temperature for your application and furnacemodel.3. Determine required insulation thickness for exposed pipelengths.NOTE: Pipe length (ft) specified for maximum pipe lengthslocated in unconditioned spaces cannot exceed total allowable pipelength as specified in Table 6.TWO-PIPE TERMINATION KIT1. Determine location for termination.Consideration of the following should be made when deter-mining an appropriate location for termination kit.a. Comply with all clearance requirements as stated in Table5.b. Termination kit should be positioned where vent vaporswill not damage plants/shrubs or air conditioning equip-ment.c. Termination kit should be positioned so that it will not beaffected by wind eddy (such as inside building corners) orallow recirculation of flue gases, airborne leaves, or lightsnow.d. Termination kit should be positioned where it will not bedamaged by or subjected to foreign objects, such as stones,balls, etc.e. Termination kit should be positioned where vent vapors arenot objectionable.2. Cut 2 holes, 1 for each pipe, of appropriate size for pipe sizebeing used.3. Loosely install elbow in bracket and place assembly oncombustion-air pipe.Roof terminations—Loosely install pipe coupling on prop-erly cut vent pipe. Coupling must be positioned so bracket willmount as shown in Fig. 30.For applications using combustion-air pipe option, indicatedby dashed lines in Fig. 30, install 90° street elbow into 90°elbow, making U-fitting. A 180° U-fitting may be used.Sidewall terminations—Install bracket as shown in Fig. 33 or34.For applications using vent pipe option indicated by dashedlines in Fig. 33, rotate vent elbow 90° from position shown inFig. 33.4. Disassemble loose pipe fittings. Clean and cement using sameprocedures as used for system piping.5. Check required dimensions as shown in Fig. 30, 33, or 34.CONCENTRIC VENT/AIR TERMINATION KIT1. Determine location for termination.Consideration of the following should be made when deter-mining an appropriate location for termination kit.a. Comply with all clearance requirements as stated in Table5.b. Termination kit should be positioned where vent vaporswill not damage plants/shrubs or air conditioning equip-ment.c. Termination kit should be positioned so it will not beaffected by wind eddy (such as inside building corners) orthat may allow recirculation of flue gases, airborne leaves,or light snow.d. Termination kit should be positioned where it will not bedamaged by or subjected to foreign objects, such as stones,balls, etc.e. Termination kit should be positioned where vent vapors arenot objectionable.2. Cut one 4-in. diameter hole for 2-in. kit, or one 5-in. diameterhole for 3-in. kit.3. Loosely assemble concentric vent/air termination componentstogether using instructions in kit.4. Slide assembled kit with rain shield REMOVED through hole.NOTE: Do not allow insulation or other materials to accumulateinside of pipe assembly when installing it through hole.Roof terminations—Locate assembly through roof to appro-priate height as shown in Fig. 31.Sidewall terminations—Locate assembly through sidewallwith rain shield positioned no more than 1-in. from wall asshown in Fig. 32.5. Disassemble loose pipe fittings. Clean and cement using sameprocedures as used for system piping.6. Check required dimensions as shown in Fig. 31 or 32.Step 4—Multiventing and Vent TerminationsWhen 2 or more 58MCA Furnaces are vented near each other, eachfurnace must be individually vented. NEVER common vent orbreach vent 58MCA furnaces. When 2 or more 58MCA furnacesare vented near each other, 2 vent terminations may be installed asshown in Fig. 35, 36, 37, 38, or 39, but next vent termination mustbe at least 36 in. away from first 2 terminations. It is important thatvent terminations be made as shown to avoid recirculation of fluegases. Dimension "A" in Fig. 35, 36, 37, 38, and 39 representsdistance between pipes or rain shields, as touching or 2-in.maximum separation.28