Évaluations - 3, GPA: 4.3 ( )

Fabricant : American International Taille : 5.08 mb Nom Fichier : Langue d'enseignement:

• Support all horizontal pipe runs every four feet and all vertical pipe runs every six feet or according to local codes. • Vents run through unconditioned spaces where below freezing temperatures are expected should be properly insulated to prevent freezing. For horizontal runs, wrap the vent pipe with nationally recognized/listed heat tape and/or approved insulation for freeze protection. Install per the manufacturer’s instructions. • An air intake filter is included with the unit and must be installed according to the installation instructions supplied with the filter. The combustion air inlet and exhaust outlet piping and termination may be installed in one of the following type terminations: 1. Standard Horizontal (2 Pipe) 2. Alternate Horizontal (2 Pipe) 3. Vertical (2 Pipe) 4. Concentric Vent - Through the Wall 5. Concentric Vent - Through the Roof All pipe, fittings, pipe cement, primers and procedures must conform to American National Standard Institute and American Society for Testing and Materials (ANSI/ASTM) standards in the United States. This water heater has been design certified by the Canadian Standards Association for use with the specified (CSA) listed plastic vent pipe. All joints in the inlet and outlet piping must be properly cemented. Size and cut all piping before cementing. 1. Cut the pipe end square and remove all ragged edges and burrs. Make sure the inside of the pipe is clean and free of cuttings and loose dirt. Chamfer the end and apply primer to the fitting and pipe. 2. Using a suitable grade of pipe cement, apply a moderate, even coat inside the fitting. Apply a liberal amount of cement to the outside of the pipe to socket depth. Note: It is important to select the proper pipe cement for the type of plastic pipe being used. 3. Assemble the parts quickly while the cement is still wet. Twist the pipe 1/4 turn during insertion and hold for 30 seconds. Vent Pipe Length Size the exhaust outlet and combustion air inlet pipes as specified in Table 1. This table lists the maximum allowable length in feet of the exhaust outlet and combustion air inlet pipes as related to the number of required elbows and the termination. The specified maximum lengths are for the separate inlet and exhaust pipe systems and not the combined length of both systems. Minimum pipe length is 6 feet with one elbow per side. 1. Determine termination type and pipe size. 2. Determine number of elbows in exhaust pipe. Do not include the elbows in the termination or the condensate trap. Corresponding number Indicates the maximum length of exhaust pipe. 3. Determine number of elbows in inlet pipe. Do not include the elbows in the termination. The corresponding number indicates the maximum length of inlet pipe. Figure 5: Correct and Incorrect Pipe Fittings Vent Termination Locations The air inlet and exhaust outlet must be installed with the following minimum clearances (see figure 6): • Twelve inches above grade or maximum anticipated snow level. • Twelve inches from any opening through which flue gases could enter the structure. • Four feet horizontally and vertically from gas or electric meters, gas regulators, dryer vents, vent hoods, bathroom fan exhaust, attic fans and turbines. • Two feet from an inside corner formed by two exterior walls. • Two feet from porches, decks, overhangs and other obstructions. In addition to maintaining the minimum clearances , the vent should terminate according to the following guidelines: 1. Use only 2 inch pipe or a 2 inch concentric vent onthe vent termination for 100,000 - 150,000 BTU/Hrmodels. For inputs of 175,000 BTU/Hr or more, useonly 3 inch pipe or a 3 inch concentric vent. Do notexpose any 3” X 2” reducers or bushings to outdoor ambient temperatures. 2. The air inlet and exhaust outlet must not terminate under a patio, deck or any covered area. 3. Do not terminate the vent near walkways or into alleys or other publicly accessible areas. 4. Do not terminate the vent in an area where children or animals could block pipes. 5. Do not locate the vent terminal too close to shrubs or bushes. 6. Caulk all cracks, seams and joints within 6 feet horizontally above and below the vent. 7. Combustion air inlet termination and exhaust air termination must be located in the same pressure zone. Figure 6: Minimum Clearances for Inlet/Outlet and Concentric Vent A. 12 in (30 cm) min. clearance above grade, veranda, porch, deck, balcony, or maximum anticipated snow level. B. 12 in (30 cm) min. clearance on top and side ofwindow or door that may be opened. Do not installbelow a window or door that may be opened. C. Clearance to permanently closed window.** D. 12 in (30 cm) min vertical clearance to ventilatedsoffit located above the terminal within a horizontal distance of 2 ft (61 cm) from the center line of theterminal. E. 12 in (30 cm) min. clearance to unventilated soffit. F. Clearance to outside corner ** G. 2 ft (61 cm) clearance to inside corner formed bytwo exterior walls. H. 4 ft ...

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