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Manafacture: American File size: 592.1 kb File name: 77fe9708-7f87-4154-8d1f-e2638d0887fd.pdf Language of manual:

The installation instructions for confined spaces in tightly constructed buildings must be followed to ensure adequate air supply. CONFINED SPACE When drawing combustion air from inside a conventionally constructed building to a confined space, such a space shall be provided with two permanent openings, ONE IN OR WITHIN 12 INCHES (31 cm) OF THE ENCLOSURE TOP AND ONE IN OR WITHIN 12 INCHES (31 cm) OF THE ENCLOSURE BOTTOM. Each opening shall have a free area of at least one square inch per 1000 Btuh (2,203mm2/kW) appliances in the enclosure, but not less than 100 square inches (645 cm.). If the confined space is within a building of tight construction, air for combustion and ventilation must be obtained from outdoors. When directly communicating with the outdoors through vertical ducts, two permanent openings, located in the above manner, shall be provided. Each opening shall have a free area of not less than one square inch per 4000 Btuh (551mm2/kW) of the total input of all appliances in the enclosure. If horizontal ducts are used, each opening shall have a free area of not less than one square inch per 2000 Btuh (1,102mm2/kW) of the total input of all appliances in the enclosure. CHEMICAL VAPOR CORROSION WARNING CORROSION OF THE FLUE WAYS AND VENT SYSTEM MAY OCCUR IF AIR FOR COMBUSTION CONTAINS CERTAIN CHEMICAL VAPORS. SUCH CORROSION MAY RESULT IN FAILURE AND RISK OF ASPHYXIATION. Spray can propellants, cleaning solvents, refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes, and process chemicals are typical compounds which are potentially corrosive. PRODUCTS OF THIS SORT SHOULD NOT BE STORED NEAR THE HEATER. ALSO, AIR WHICH IS BROUGHT IN CONTACT WITH THE HEATER SHOULD NOT CONTAIN ANY OF THESE CHEMICALS. IF NECESSARY, UNCONTAMINATED AIR SHOULD BE OBTAINED FROM REMOTE OR OUTSIDE SOURCES. VENTING WARNING THE INSTRUCTIONS IN THIS SECTION ON VENTING MUST BE FOLLOWED TO AVOID CHOKED COMBUSTION OR RECIRCULATION OF FLUE GASES. SUCH CONDITIONS CAUSE SOOTING OR RISKS OF FIRE AND ASPHYXIATION. 7 US DIRECT VENT CAUTION TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING TO THE AIR INTAKE IN WINDY/COLD AREAS, THE MAXIMUM PRACTICALDISTANCE BETWEEN THESE TWO TERMINALS IS RECOMMENDED. CANADIAN DIRECT VENT FIGURE 5. 8 US HORIZONTAL VENT CAUTION TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING TO THE AIR INTAKE IN WINDY/COLD AREAS, THE MAXIMUM PRACTICALDISTANCE BETWEEN THESE TWO TERMINALS IS RECOMMENDED. CANADIAN HORIZONTAL VENT FIGURE 6. 9 Heater must be protected from freezing downdrafts during shutdown periods. WARNING NEVER OPERATE THE HEATER UNLESS IT IS VENTED TO THE OUTDOORS AND HAS ADEQUATE AIR SUPPLY TO AVOID RISKS OF IMPROPER OPERATION, FIRE, EXPLOSION OR ASPHYXIATION. VENT PIPE TERMINATION NOTE: Before installing venting, determine place of vent pipe termination. See Figure 5 and 6 before proceeding. CAUTION DO NOT TERMINATE THE VENTING WHERE NOISE FROM THE EXHAUST OR INTAKE WILL BE OBJECTIONABLE. THIS INCLUDES LOCATIONS CLOSE TO OR ACROSS FROM WINDOWS AND DOORS. AVOID ANCHORING THE VENTAND INTAKE PIPES DIRECTLY TO FRAMED WALLS, FLOORS OR CEILINGS UNLESS RUBBER ISOLATION PIPE HANGERS ARE USED. THIS PREVENTS ANY VIBRATIONS FROM BEING TRANSMITTED INTO THE LIVING SPACES. IMPORTANT The vent system must terminate so that proper clearances are maintained as cited in local codes or the current editions of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or the Canadian Electrical Code, CSA C22.1. Do not terminate the exhaust vent terminal over public area where condensate or vapor can cause nuisance or hazard. Plan the vent system layout so that proper clearances are maintained from plumbing and wiring. Vent pipes serving power vented appliances are classified by building codes as "vent connectors". Required clearances from combustible materials must be provided in accordance with information in this manual under LOCATION OF HEATER and CLEARANCES, and with National Fuel Gas Code and local Codes. IMPORTANT Plan the layout of the vent system backwards from the vent termination to the appliance. WARNING USE ONLY THE VENT TERMINALS SUPPLIED WITH THIS UNIT. TERMINATION OF A VENT SYSTEM WITH A DEVICE OTHER THAN THE SUPPLIED VENT TERMINATIONS WILL AFFECT SYSTEM PERFORMANCE AND RESULT IN A SAFETY HAZARD. DIRECT VENTING The air intake provided on the unit contains an intake guard, see Figure 7. 3"x 4" 45° PVC ELBOW WITH INTAKE GUARD FIGURE 7. WARNING WHEN THE UNIT IS TO BE SETUPAS A DIRECT VENT, THE INTAKE GUARD MUST BE REMOVED. THE INLET VENT PIPE MAY THEN BE GLUED TO THE AIR INTAKE (see Figure 8) PROVIDED ON THE UNIT. FIGURE 8. DIRECT VENT TERMINAL INSTALLATION IMPORTANT THIS UNIT CONSISTS OF TWO VENT TERMINALS - AN INTAKE VENT TERMINALAND AN EXHAUSTVENTTERMINAL. THE INTAKE VENT TERMINAL IS A 3" 45° PVC ELBOW WITH A DOME SHAPE SCREEN AND THE EXHAUST VENT TERMINAL IS A 3" 45°PVC ELBOW WITH A MESH WIRE SCREEN. NOTE: TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING TO THE AIR INTAK...

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