Napoleon NBM030S2A Installation And Operating Instructions Manual

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Napoleon NBM030S2A Installation And Operating Instructions Manual Manual pdf 13 page image

W415-1117 / A / 03.11.1413IOM6.0 DUCTWORKH10.0Proper airflow is required for the correct operation of this furnace. Insufficient airflow may cause erraticoperation, could cause the furnace to cycle on the high temperature limit, and may damage the heatexchanger. Excessive airflow may result in an excessively noisy duct system and may result in undesirableconsequences such as creating uncomfortable drafts.If air conditioning is to be used with the furnace, the duct system must be capable of delivering the correctamount of airflow for each system.The ductwork should be sized and constructed in accordance with accepted industry standards. Duct sizingand construction information may be obtained from:• A.C.C.A. (Air Conditioning Contractors of America)• A.S.H.R.A.E. (American Society of Heating, Refrigeration and Air Conditioning Engineers)• H.R.A.I. (Heating, Refrigerating and Air Conditioning Institute (Canada)• S.M.A.C.N.A. (Sheet Metal and Air Conditioning Contractors’ National Association (United States)All of the above professional organizations have duct sizing manuals available.The total static pressure drop of the air distribution system (including filters) should not exceed 1.0” w.c.H3.8DO NOT ALLOW GAS PIPING TO BE ROUTED THROUGH JOIST SPACES THAT AREUSED FOR RETURN AIR PURPOSES. DO NOT USE JOIST SPACES FOR RETURN AIRPURPOSES IF THE JOIST SPACE ALREADY CONTAINS PLUMBING STACKS, CHIMNEYCOMPONENTS, ETC. UNLESS THE PORTION USED FOR RETURN AIR PURPOSES CANBE COMPLETELY ISOLATED FROM PORTIONS WITH OTHER USAGES.NEVER ALLOW THE PRODUCTS OF COMBUSTION FROM THE FLUE TO ENTER THERETURN AIR OR SUPPLY AIR DUCTWORK.ALL RETURN AIR DUCTWORK MUST BE ADEQUATELY SEALED AND SECURED TOTHE FURNACE WITH SHEET METAL SCREWS. TAPE THE SHEET METAL SEAMS IN THEVICINITY OF THE FURNACE WITH DUCT TAPE OR SIMILAR MATERIAL.WHEN THE FURNACE IS MOUNTED ON A PLATFORM WITH RETURN AIR THROUGH THEBOTTOM, IT MUST BE SEALED AIR TIGHT BETWEEN THE FURNACE AND THE RETURNAIR PLENUM. THE FLOOR OR PLATFORM MUST PROVIDE SOUND PHYSICAL SUPPORTOF THE FURNACE WITHOUT SAGGING OR GAPS AROUND THE BASE. IT MUST ALSOBE SEALED BETWEEN THE SUPPORT AND THE BASE.FAILURE TO PREVENT PRODUCTS OF COMBUSTION FROM BEING CIRCULATED INTOTHE LIVING SPACE CAN CREATE POTENTIALLY HAZARDOUS CONDITIONS, INCLUDINGCARBON MONOXIDE POISONING THAT COULD RESULT IN PERSONAL INJURY ORDEATH.WARNING !!