York P*UR 40 Installation Instructions Manual

Contents

York P*UR 40 Installation Instructions Manual Manual pdf 21 page image

035-14370-000 650.75-N4UUnitary Products Group 21j. De-icing salts or chemicalsk. Carbon tetrachloridel. Halogen type refrigerantsm. Cleaning solvents (such as perchloroethylene)n. Printing inks, paint removers, varnishes, etc.o. Hydrochloric acidsp. Cements and gluesq. Antistatic fabric softeners for clothes dryersr. Masonry acid washing chemicalsVENT PIPE SIZING (1-PIPE SYSTEM)Refer to Table 7 to select the proper size piping for venting.The size will be determined by a combination of furnacemodel, total length of run, and the number of elbows required.The following rules must also be observed.NOTE:Furnace vent pipe connections are sized for 2-in. pipe.Any pipe size change must be made outside the furnace cas-ing in a vertical pipe section to allow proper drainage of ventconnections.NOTE:An offset using two 45 degree elbows may be requiredfor plenum clearance when the vent is increased to 3".1. Long radius elbows are required for all units.2. Elbows are assumed to be 90 degrees. Two 45 degreeelbows count as one 90 degree elbow.3. One Vent terminal elbow is already accounted for andshould not be counted in the allowable total indicated inthe table. See “VENT TERMINAL LOCATIONCLEARANCES" Section on page 21 . This part is shownshaded.4. All vent pipe and fittings must conform to AmericanNational Standards Institute (ANSI) standards and Amer-ican Society for Testing and Materials (ASTM) standardsD1785 (Schedule 40 PVC), D2665 (PVC-DWV), F891(PVC-DWV Cellular Core), D2241 (SDR-21 and SDR-26PVC), D2261 (ABS-DWV), or F628 (Schedule 40 ABS.Pipe cement and primer must conform to ASTM Stan-dards D2564 (PVC) or D2235 (ABS).5. The use of flexible connectors or no hub connectors inthe vent system is not allowed.:VENT TERMINATION (1-PIPE SYSTEM)Side wall horizontal vent terminals and roof mounted verticalterminals may be field fabricated. Standard PVC/SRD fittingsmay be used. Terminal configuration must comply as detailedin this section.When selecting the locations for vent termination, the follow-ing should be considered:1. Comply with all clearance requirements. (Refer to Figure25 on page 22)2. Termination should be positioned where vent vapors willnot damage plants or shrubs or air conditioning equip-ment.3. Termination should be located where it will not beaffected by wind gusts, light snow, airborne leaves orallow recirculation of flue gases.4. Termination should be located where it will not be dam-aged or exposed to flying stones, balls, etc.5. Termination should be positioned where vent vapors arenot objectionable.VENT TERMINAL LOCATION CLEARANCESThe vent must be installed with the following minimum clear-ances(Refer to Figure 25 on page 22), and complying withlocal codes or utility requirements or other authority havingjurisdiction.1. 1 foot above grade and above normal snow levels.2. Not above any walkway.3. 4 feet below, 4 feet horizontally from, or 1 foot above anydoor/window or gravity air inlet to the building, or fromgas or electric meters.TABLE 7: VENT PIPING / 1-PIPE SYSTEM (ALLMODELS)Model Pipe SizeMax. Elbows vs. One Way VentLength (Ft.)5-40 45 50 75All Models Except:120 / 112 / 2000 / D140 / 130 / 2000 / D2” 6 5 4 N/AAll Models Except:120 / 112 / 2000 / D140 / 130 / 2000 / D3” 8 7 6 5120 / 112 / 2000 / D140 / 130 / 2000 / D 3” Only 6 5 4 N/AIn Canada, refer to CAN/CGA-B149.1 or.2 InstallationCode (latest edition - Venting Systems and Air Supply)