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Istruzioni per l'uso A.O. Smith, Modello 1000

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public walkways or over areas where condensate could create a nuisance or hazard. This is especially true in colder climates where ice buildup is likely to occur. A.O. Smith Corporation will not be held liable for any personal injury or property damage due to any dislodging of ice. 3. The minimum distance for any window, gravity air inlet to a building, or from gas or electric meter(s) is 6 feet (1.8 m) horizontally, 4 feet (1.2 m) below and 24 inches (61.0 cm) above. 4. The minimum distance from inside corner formed by two exterior walls is 6 feet (1.8 m) but 10 feet (3.1 m) is recommended where possible. 5. Maintain a minimum distance of 4 feet (1.2 m) from any soffit or eve vent to the exhaust terminal. 6. Maintain a minimum distance of 10 feet (3.1 m) from any forced air inlet to a building. Any fresh air or make up air inlet such as a dryer or furnace area is considered to be a forced air inlet. 7. Avoid areas where condensate drainage may cause problems such as above planters, patios, or adjacent to windows where the steam from the flue gases may cause fogging. 8. Select the point of wall penetration where the minimum 1/4" per foot (2 cm/m) of slope up can be maintained. 9. The through the wall termination kit is suitable for zero clearance to combustible materials. 10.The mid point of the termination elbow must be a minimum of 12 inches (30.5 cm) from the exterior wall. Figure 4. Vent Termination Installation Clearances 9 STANDARD VENT - VERTICAL (CATEGORY I) IMPORTANT! VENT PRESSURE MUST BE MAINTAINED BETWEEN -0.02" W.C. AND -0.04" W.C. AT 24" (61.0 cm) ABOVE BOILER COLLAR. Figure 5. TABLE 7. STANDARD VERTICAL VENTING (CATEGORY I) MODEL APPLIANCE CATEGORY CERTIFIED VENTING MATERIAL EXHAUST VENT SIZE (INCHES) MAXIMUM LENGTH WITHOUT BAROMETRIC DAMPER (FEET) I000 I TYPE B OR EQUIVALENT 10”(25.4 cm) 35 Feet (10.7 m) without damper *70 Feet (21.3 m) max. with damper 1300 1500 I TYPE B OR EQUIVALENT 12" (30.5 cm) 35 Feet (10.7 m) without damper *70 Feet (21.3 m) max. with damper 1850 2100 I TYPE B OR EQUIVALENT 14"(35.6 cm) 35 Feet (10.7 m) without damper *70 Feet (21.3 m) max. with damper 2500 I TYPE B OR EQUIVALENT 16" (40.6 cm) 35 Feet (10.7 m) without damper *70 Feet (21.3 m) max. with damper * Extending venting over 70 feet (21.3 m) may require special considerations. • Connection for the appliance exhaust vent to the stack must be as direct as possible. Maximum and minimum venting length for Category I appliances shall be determined per the latest edition of the National Fuel Code (U.S.) and CAN/CSA-B149.1 and .2 Installation Code (Canada). • The horizontal breaching of a vent must have an upward slope of not less than 1/4 inch per linear foot (2 cm/m) from the boiler to the vent terminal. The horizontal portion of the vent shall be supported to maintain clearances and to prevent physical damage or separation of joints. 10 STANDARD VENT - HORIZONTAL (CATEGORY III) Figure 6. TABLE 8. STANDARD HORIZONTAL VENTING (CATEGORY III) MODEL APPLIANCE CATEGORY CERTIFIED VENTING MATERIAL EXHAUST VENT SIZE (INCHES) MAXIMUM VENT LENGTH(FEET) I000 III STAINLESS STEEL 10”(25.4 cm) 70' (21.3 m) 1300 1500 III STAINLESS STEEL 12" (30.5 cm) 70' (21.3 m) 1850 2100 III STAINLESS STEEL 14"(35.6 cm) 70' (21.3 m) 2500III STAINLESS STEEL 16" (40.6 cm) 70' (21.3 m) WARNING: No substitutions of flue pipe or vent cap material are allowed. Such substitutions would jeopardize the safety and health of inhabitants. • A maximum of two elbows can be used on inlet and outlet vent piping respectively. Each elbow is equal to 10 feet (3 m) of straight pipe. • Use only special gas vent pipes listed for use with Category III gas burning heaters, such as stainless steel Saf-T-Vent by Heat Fab, Inc., available from A.O. Smith WPC, 5621 W. 115th Street, Alsip, IL 60803 Phone: 1-800-433-2545 or Fax: 1-800-433-2515. Pipe joints must be positively sealed. 11 DIRECT VENT - VERTICAL (CATEGORY I) Figure 7. TABLE 9. DIRECT VENT (VERTICAL EXHAUST CONFIGURATIONS) MODEL APPLIANCE CATEGORY CERTIFIED EXHAUST VENT MATERIAL EXHAUST VENT SIZE (INCHES) MAXIMUM EXHAUST VENT LENGTH (FEET) AIR INTAKE MATERIAL AIR INLET SIZE (INCHES) MAXIMUM AIR INTAKE LENGTH (FEET) I000 I TYPE B OR EQUIVALENT 10" (25.4 cm) 35' (10.7 m) GAL. STEEL PVC, ABS OR CPVC 8" (20.3 cm) 35' (10.7 m) 1300 1500 I TYPE B OR EQUIVALENT 12" (30.5 cm) 35' (10.7 m) GAL.STEEL PVC, ABS CR CPVC 10" (25.4 cm) 35' (10.7 m) 1850 I TYPE B OR EQUIVALENT 14" (35.6 cm) 20' (6.1 m) GAL. STEEL PVC, ABS OR CPVC 10" (25.4 cm) 20' (6.1 m) 2100 I TYPE B OR EQUIVALENT 14" (35.6 cm) 20' (6.1 m) GAL. STEEL PVC, ABS OR CPVC 12" (30.5 cm) 20' (6.1 m) 2500 I TYPE B OR EQUIVALENT 16" (40.6 cm) 20' (6.1 m) GAL. STEEL PVC, ABS OR CPVC 12" (30.5 cm) 20' (6.1 m) • Connection for the appliance exhaust vent to the stack must be as direct as possible. Maximum and minimum venting length for Category I appliances shall be determined per the latest edition of the National Fuel Code (U.S.) and CAN/CSA-B149.1 and .2 Installation ...

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