York P*UR 40 Installation Instructions Manual

Contents

York P*UR 40 Installation Instructions Manual Manual pdf 12 page image

650.75-N4U 035-14370-00012 Unitary Products GroupThis appliance is design certified for line contact for furnacesinstalled horizontally. The intersection of the furnace top andsides form a line. This line may be in contact with combustiblematerial. Refer to “Where it will not interfere with the cleaning,servicing or removal of other appliances." Section on page 5in this manual for additional information.Secure a platform constructed of plywood or other buildingmaterial to the floor joists. Sheet metal, 12" in front of the fur-nace combustion air openings is recommended. (Refer toFigure 9.)Note: The unit must be elevated to allow clearnace fo thecondensate trap and drain pipe. .NOTE:See crawl space installation for suspending the fur-nace in attic installations.CRAWL SPACE INSTALLATIONThe furnace can be hung from floor hoists or installed on suit-able blocks or pad. Blocks or pad installations shall provideadequate height to ensure the unit will not be subject to waterdamage.When suspending the furnace from rafters or floor joistsusing rod, pipe or straps, refer to Physical Data and,Table 3,“UNIT CLEARANCES TO COMBUSTIBLES,” on page 8, forfurnace weights to determine suitable means of suspension.Angle supports should be placed at the supply aire end andnear the blower deck. (Refer to Figure 9.) Do not supportat return air end of unit.Units may also be suspended by using straps or other mate-rial at the same location. All four suspension points must belevel to ensure quiet furnace operation.GAS PIPINGThe gas supply must be installed in accordance with the cur-rent National Fuel Gas Code, ANSI Z223.1 (in the U.S.) orCAN-B149.1 or.2 (in Canada) installation codes and all appli-cable local and utility requirements. All pipe and fitting mate-rial, pipe size and installation procedures must comply withthe appropriate code. Some utilities may require larger pipesizes than shown in the code. Gas piping may be connectedfrom either side of the furnace. Each side of the unit has twogas pipe entry knockouts.For downflow/horizontal models,plan your combustion airpiping before determining the correct gas pipe entry. Use 90degree service elbow(s), or short nipples and conventional 90degree elbow(s) to enter through the cabinet access holes..If this furnace is installed over a finished space, acondensate safety pan must be installed.When a furnace is installed in an attic or otherinsulated space, keep all insulating materials atleast 12" away from furnace and burner combus-tion air openings.FIGURE 9 : TYPICAL FURNACE INSTALLATIONUSING SUSPENSION MATERIALSSUPPORTRODANGLE IRONBRACKET6" MIN BETWEENROD & FURNACE1" MAX BETWEENROD & FURNACE1" MAX BETWEENROD & FURNACEIn any application where temperatures belowfreezing are possible, See “BELOW FREEZINGLOCATIONS” on page 5An overpressure protection device, such as apressure regulator, which conforms to the NationalFuel Gas Code, ANSI Z223.1 (U.S.) or CAN-B149.1 or.2 (Canada) and acts to limit the down-stream pressure to a value that does not exceed0.5 PSI (14" w.c.), must be installed in the gas pip-ing system upstream of the furnace. Failure to doso may result in a fire or explosion or cause dam-age to the furnace or some of its components.