Carrier 59CU5A Installation, Start-up, Operating And Service And Maintenance Instructions

59CU5A: Installation, Start-up, Operating and Service and Maintenance InstructionsManufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.38Table 15 – Hanger SpacingOptional Installation of the Vent PipeNOTE: DO NOT USE THIS TECHNIQUE FORPOLYPROPYLENE VENTING SYSTEMS.This option provides a disconnect point for the vent pipe. The vent pipemust be cemented to the plastic vent pipe adapter to maintain a sealedvestibule, see Fig. 55.1. Insert a length of vent pipe through the casing into the outlet of thevent elbow.2. Slide the plastic vent pipe adapter over the length of the vent pipedown to the furnace casing. Mark the pipe where it is flush with theoutlet of the adapter.3. Remove the pipe from the furnace and the adapter and cut off anyexcess pipe.4. Clean and prime the end of the pipe that is flush with the ventadapter with a primer that is appropriate for the type of pipe beingused.5. Re-insert the pipe through the casing into the vent elbow.6. Tighten the clamp around the outlet of the vent elbow. Torque theclamp to 15 lb-in.7. Apply cement to the end of the pipe and to the inside of the plasticvent adapter.8. Slide the adapter over the vent pipe and align the screw holes in theadapter with the dimples in the furnace casing.9. Pilot drill 1/8-in. screw holes for the adapter in the casing andsecure the adapter to the furnace with sheet metal screws.10. Loosen the clamps on the rubber vent coupling.11. Slide the end of the coupling with notches in it over the standoffs inthe vent pipe adapter.12. Tighten the clamp of the coupling over the vent pipe adapter.Torque the lower clamp around the vent pipe adapter to 15 lb-in.13. Pilot drill a 1/8-in. hole in the combustion air pipe adapter.14. Complete the vent and combustion air pipe as shown in “Install theVent and Combustion Air Pipe.”A13076AA13076BFig. 55 – Optional Vent Pipe Flush with AdaptorInstalling the Vent TerminationRoof TerminationsA roof termination of any type will require a 4-in. (102 mm) flashing fora 2 in. (50 mm ND) concentric vent or a 5-in. diameter (127 mm)flashing for a 3-in. (80 mm ND) concentric vent kit. For two-pipe orsingle pipe vent systems, a flashing for each pipe of the requireddiameter will be necessary.It is recommended that the flashing be installed by a roofer or competentprofessional prior to installing the concentric vent. The terminations canbe installed on a flat or pitched roof.Concentric VentSingle or multiple concentric vent must be installed, see Fig. 62.Maintain the required separation distance between vents or pairs of vents(see Fig. 62) and all clearance, see Fig. 60.NOTE: Follow the instructions of the vent terminal manufacturer. Theseinstructions are provided as a reference, only.Cut one 4-in. (102 mm) diameter hole for 2-in. (50 mm ND) kit, or one5-in. (127 mm) diameter hole for 3-in. (80 mm ND) kit in the desiredlocation.Diameter MaterialPVC Sch 40 SDR 21 & 26 ABS CPVC Polypropylene1 1/2-in. 3-ft. 2 1/2-ft. 3-ft. 3-ft. 3.25-ft.38-mm 914-mm 762-mm 914-mm 914-mm 1000 mm2-in. 3-ft. 3-ft. 3-ft. 3-ft. 3.25-ft.51-mm 914-mm 914-mm 914-mm 914-mm 1000 mm2 1/2-in. 3 1/2-ft. 3-ft. 3 1/2-ft. 3 1/2-ft. 3.25-ft.64-mm 1067-mm 914-mm 1067-mm 1067-mm 1000 mm3-in. 3 1/2-ft. 3-ft. 3 1/2-ft. 3 1/2-ft. 3.25-ft.76-mm 1067-mm 914-mm 1067-mm 1067-mm 1000 mm4-in. 4-ft. 3 1/2-ft. 4-ft. 4-ft. 3.25-ft.WARNING!CARBON MONOXIDE POISONING HAZARDFailure to follow this warning could result in personal injury or death.DO NOT use cement to join polypropylene venting systems. Followthe polypropylene venting system manufacturer’s instructions forinstalling polypropylene venting systems.NOTICE!FOR POLYPROPYLENE VENTING SYSTEMSWhen using polypropylene venting systems, all venting materials used,including the vent terminations, must be from the same manufacturer.VENT PIPE FLUSH SHOWING COUPLINGALIGN NOTCHES IN VENT PIPECOUPLING OVER STAND-OFFON ADAPTER. TORQUE LOWERCLAMP 15 LB-IN. WHEN REMAININGVENT PIPE IS INSTALLED, TORQUEUPPER CLAMP TO 15 LB-IN.