Carrier 59SC5B Installation, Start-up, Operating And Service And Maintenance Instructions

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186. From the outside of the casing, insert the angled end of theZ-pipe through drain hole in the left side of the casing andbehind the inducer or gas valve. Allow the Z-pipe totemporarily rest on the blower shelf (upflow) or burner box(downflow). (NOTE: When the inducer housing has beenremoved to ease installation in upflow applications, this stepis not needed.)7. After inserting the Z pipe through the casing, slide a springclamp over each end of the Z pipe.8. From inside the casing, insert the short end of the formedgrommet cut from the rubber drain elbow through the7/8-in. drain knockout in the casing.9. Pull the grommet through the casing from the outside untilit is seated in the knockout.10. Align the Z-pipe with the long end of the grommet insidethe furnace and insert slightly. The angled end of the tube atthe other side of the casing should be facing the front of thefurnace.11. Slide a spring clamp over the end of the remaining rubberdrain elbow.12. Attach the drain elbow to the angled end of Z-pipe and thedrain trap outlet stub. Adjust the length of Z-pipe insertedinto the grommet at the opposite side of the furnace asnecessary for proper fit and positioning. In both upflow anddownflow orientations, the Z-pipe should NOT be restingon any sheet metal parts.13. Secure the rubber elbow to the drain trap and the Z-pipewith spring clamps.14. Secure the grommet to the Z-pipe with the spring clamp.The remaining drain line can be constructed from field supplied1/2--in. CPVC or 3/4--in. PVC pipe, in compliance with localbuilding codes. A factory-supplied 1/2--in. CPVC to 3/4--in. PVCadapter is supplied in the loose parts bag for use as required.15. Install the adapter or connect the 1/2--in. CPVC pipe bysliding a spring clamp over the open end of the grommet onthe outside the furnace casing.16. Open the spring clamp and insert the long end of theadapter or the 1/2--in. CPVC pipe into the outlet stub on thedrain tube.17. Connect additional condensate piping to a code-approveddrain, or to a condensate pump approved for use with acidicfurnace condensate and compatible with mineral andvegetable oils, such as canola oil.Allow at least 1/4-in. per foot (20 mm per meter) of slope downand away from the furnace in horizontal sections of drain line.The field--supplied, accessory horizontal drain trap grommet isONLY REQUIRED FOR DIRECT VENT APPLICATIONS.It is NOT required for applications using single--pipe orventilated combustion air venting.NOTICETIP FROM CONTRACTORS: When installing the furnacehorizontally, use the entire drain elbow (that is, do NOT cut asshown in Fig. 13 to connect the trap to the drain line. This helps toprevent bumps and shocks to the drain line from damaging thefurnace drain trap. Avoid misalignment of the drain pipe whichmay cause kinks in the elbow.A11581Fig. 13 -- Modify Rubber Drain ElbowINSTALL CLAMPS ON DRAIN TUBEATTACH DRAIN TUBE TO CONDENSATEDRAIN TRAPPULL DRAIN STUBTHROUGH CASINGOPEN SPRING CLAMPINSERT FACTORYïSUPPLIED 1/2ïIN. CPVCTO 3/4ïIN. PVC ADAPTER OR 1/2ïIN. CPVC PIPE*CLAMP MAY BE LOCATED ON OUTSIDE OF DRAINTUBEA11342AFig. 14 -- Formed Rubber Drain Grommet