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

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

Combination of Indoor and Outdoor Air1. Indoor openings shall compy with the Indoor CombustionAir Method below and,2. Outdoor openings shall be located as required in the OutdoorCombustion Air Method mentioned previously and,3. Outdoor openings shall be sized as follows:a. Calculate the Ratio of all Indoor Space volume divided byrequired volume for Indoor Combustion Air Methodbelow.b. Outdoor opening size reduction Factor is 1 minus theRatio in a. above.c. Minimum size of Outdoor openings shall be the sizerequired in Outdoor Combustion Air Method abovemultiplied by reduction Factor in b. above. The minimumdimension of air openings shall be not less than 3 in. (80mm).INSTALLATIONNOTE: The 140 size unit may NOT be installed in non-directvent (1-pipe) application.Step 1—Leveling Legs (If Desired)When furnace is used in upflow position with side inlet(s), levelinglegs may be desired. (See Fig. 20.) Install field-supplied,corrosion-resistant 5/16-in. machine bolts and nuts.NOTE: The maximum length of bolt should not exceed 1-1/2 in.1. Position furnace on its back. Locate and drill a 5/16–in.diameter hole in each bottom corner of furnace. (See Fig. 20.)Holes in bottom closure panel may be used as guide locations.2. For each hole, install nut on bolt and then install bolt and nutin hole. (Install flat washer if desired.)3. Install another nut on other side of furnace base. (Install flatwasher if desired.)4. Adjust outside nut to provide desired height, and tighten insidenut to secure arrangement.NOTE: Bottom closure must be used when leveling legs are used.See Bottom Closure Panel section.Step 2—Installation in Upflow and DownflowApplicationsNOTE: For downflow applications, this furnace is approved foruse on combustible flooring when special base (available frommanufacturer) Part No. KGASB0201ALL is used. Special base isnot required when this furnace is installed on manufacturer’s CoilAssembly Part No. CD5 or CK5, or Coil Box Part No. KCAKC isused.1. Determine application being installed from Table 3.2. Construct hole in floor per dimensions specified in Table 3and Fig. 21.3. Construct plenum to dimensions specified in Table 3 and Fig.21.4. If downflow subbase (KGASB) is used, install as shown inFig. 22.If Coil Assembly Part No. CD5 or CK5 or Coil Box Part No.KCAKC is used, install as shown in Fig. 20.NOTE: Remove furnace perforated, discharge duct flanges whenthey interfere with mating flanges on coil on downflow subbase.To remove furnace perforated, discharge duct flange, use wideduct pliers or duct flange tool or hand seamers to bend flange backand forth until it breaks off. Be careful of sharp edges. (See Fig.24.)UNIT MAY NOT OPERATEFailure to follow this caution may result in intermittent unitoperation.Do not bend duct flanges inward as shown in Fig. 21. Thiswill affect airflow across heat exchangers and may cause limitcycling or premature heat exchanger failure. Remove ductflange completely or bend it inward a minimum of 210° asshown in Fig. 24.NOTE: For 140 size unit when installed in downflow orientation,cut the white jumper wire off between terminals PL1-7 and PL1-9.Do not cut white jumper between terminals PL1-7 and PLI-11.Refer to Fig. 32 for location of jumper. Cut jumper close toconnector and remove wire to avoid a short circuit.Step 3—Installation in Horizontal ApplicationsUNIT MAY NOT OPERATEFailure to follow this caution may result in intermittent unitoperation.The entire length of furnace MUST be supported whenfurnace is used in a horizontal position to ensure properdraining. When suspended, bottom brace supports sides andcenter blower shelf. When unit is supported from the ground,blocks or pad should support sides and center blower shelfarea.These furnaces can be installed horizontally in either horizontalleft or right discharge position. In a crawlspace, furnace can eitherbe hung from floor joist or installed on suitable blocks or pad.Furnace can be suspended from each corner by hanger bolts andangle iron supports. (See Fig. 25.) Cut hanger bolts (4 each 3/8-in.all-thread rod) to desired length. Use 1 X 3/8-in. flat washers,3/8-in. lock washers, and 3/8-in. nuts on hanger rods as shown inFig. 25. Dimples are provided for hole locations. (See Fig. 2.)Fig. 20—Leveling LegsA890141 3⁄4″1 3⁄4″1 3⁄4″1 3⁄4″5⁄16″5⁄16″5⁄16″5⁄16″19→