York P*UR 40 Installation Instructions Manual

Contents

York P*UR 40 Installation Instructions Manual Manual pdf 8 page image

650.75-N4U 035-14370-0008 Unitary Products GroupDUCTWORKThe duct system's design and installation must:1. Handle an air volume appropriate for the served spaceand within the operating parameters of the furnace spec-ifications.2. Be installed in accordance with standards of NFPA(National Fire Protection Association) as outlined inNFPA pamphlets 90A and 90B (latest editions) or appli-cable national, provincial, local fire and safety codes.3. Create a closed duct system. The supply duct systemmust be connected to the furnace outlet and the returnduct system must be connected to the furnace inlet. Bothsupply and return duct systems must terminate outsidethe space containing the furnace.4. Generally complete a path for heated or cooled air to cir-culate through the air conditioning and heating equip-ment and to and from the conditioned space.When the furnace is used in conjunction with a cooling coil,the furnace must be installed parallel with, or on the upstreamside of the cooling unit to avoid condensation in the primaryheat exchanger.When a parallel flow arrangement is used, the dampers orother means used to control air flow must be adequate to pre-vent chilled air from entering the furnace, and if manuallyoperated, must be equipped with means to prevent operatingof either unit unless the damper is in the full heat or cool posi-tion.UPFLOW MODELSSUPPLY PLENUM CONNECTIONAttach the supply plenum to the fur-nace outlet duct connection flanges.This is typically through the use of Scleat material when a metal plenum isused. The use of an approved flexibleduct connector is recommended on allinstallations. This connection should besealed to prevent air leakage.If a matching cooling coil is used, itmay be placed directly on the furnaceoutlet and sealed to prevent leakage.Follow the coil instructions for installingthe supply plenum.On all installations without a coil, a removable access panelis recommended in the outlet duct such that smoke orreflected light would be observable inside the casing to indi-cate the presence of leaks in the heat exchanger. Thisaccess cover shall be attached in such a manner as to pre-vent leaks.TABLE 3: UNIT CLEARANCES TO COMBUSTIBLESAPPLICATION TOP FRONT REAR LEFTSIDERIGHTSIDE FLUE FLOOR/BOTTOM CLOSET ALCOVE ATTICLINECON-TACTUPFLOW MODELS (P*UR / FG9-UP / G9T-UP)UPFLOW 1 3 0 0 0 0 COMBUSTIBLE YES YES YES NODOWNFLOW / HORIZONTAL MODELS (P*DH / FG9-DH / G9T-DH)DOWNFLOW 1 3 0 0 0 0 1" 1 YES YES YES NOHORIZONTAL 0 3 0 1 1 0 COMBUSTIBLE2 NO YES YES YES31. Special floor base or air conditioning coil required for use on combustible floor.2. Minimum of 8” clearance required to install condensate removal system.3. Line contact only permitted between lines formed by the intersection of the rear panel and side panel (top in horizontal position) of thefurnace jacket and building joists, studs or framing.If this unit is installed in an unconditioned spaceand an extended power failure occurs, there willbe potential damage to the condensate trap, drainlines and internal unit components. Following apower failure situation, Do Not Operate the UnitUntil Inspection and Repair Are Performed.The cooling coil must be installed in the supply airduct downstream of the furnace.