valutazioni - 4, GPA: 4.8
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NOTE: When determining locations of the openings in the outside wall allow for the 1/8" (3.2 mm) rise per 5' (1.52 m) that has taken place in the horizontal run. FIGURE 19. The 3" PVC, ABS or CPVC Schedule 40 vent pipe can be run from the water heater through the wall or from the wall to the water heater, whichever is most convenient. The vent pipe must extend a minimum of 1-1/2" (38 mm) through the exterior wall. Extending the vent cap as far as possible from the surface of the exterior 9 wall will help minimize discoloration of the wall. Note that the inside flue mounting adaptors must be slipped over the vent piping before locating the pipe through the wall. Before securing the inside and outside collars to the wall, use a silicone sealer between pipe and opening to insure a water and air tight seal. INSTALLATION SHOWING USE OF PVC, ABS OR CPVC PIPE FOR INLET AND OUTLET VENT PIPE. (50 Gal. (189.3 L) Hi BTU input & all 75 Gal. (283.9 L) Models only) is supplied on certain models only. (More may be required and must be supplied locally). 1. The water heater requires its own (separate) venting system. 2. Only 3" ABS Schedule 40 piping and fittings are acceptable materials on the first 5' (1.52 m) of the outlet vent system for some 50 Gal. (189.3 L) and 75 Gal. (283.9 L) models. 3. 3" PVC, ABS, or CPVC Schedule 40 piping and fittings are acceptable materials for the inlet vent system and for the outlet vent system (after the first 5' (1.52 m) for 50 Gal. (189.3 L) Hi BTU input and 75 Gal. (283.9 L) Models only). 4. It cannot be connected to existing vent piping or chimney. 5. It must terminate vertically to the outdoors. 6. The total vertical and horizontal runs cannot exceed the maximum length with a maximum number of 90° elbows as specified in the table below. If more elbows are required, the venting distance must be reduced 5' (1.52 m) for every 90° elbow. 3" DIA. VENTS NUMBER OF 90° DEG. MAX. LENGTH (FT.) ELBOWS* 45 (13.72 m) 1 40 (12.2 m) 2 35 (10.7 m) 3 *NOTE: Two 45° elbows are equivalent to one 90° elbow. One 90° elbow equals 5' (1.52 m) of equivalent vent length. FIGURE 20. CONNECTING VENT TO BLOWER 1. If making an immediate horizontal run of vent off the blower, one 3" PVC inlet and one 3" PVC (ABS for 50 Gal. (189.3 L) and 75 Gal.(283.9 L) Models) outlet Schedule 40 street elbows are required. Place the elbow in the required direction on the blower and using three sheet metal screws, attach the elbow. FIGURE 21. 2.If there is to be a vertical run from the blower, the 3" PVC inlet and the 3" PVC (ABS for 50 Gal. (189.3 L) and 75 Gal.(283.9 L) Models) outlet Schedule 40 pipe must be attached to the blower and venting hood, using six sheet metal screws. FIGURE 22. VENTING THROUGH A ROOFTwo 3" inlet and outlet PVC Schedule 40-45° vent caps are supplied. A 5' (1.52 m) section of 3" ABS Schedule 40 outlet vent pipe FIGURE 23. WIRING DANGER DO NOT USE AN EXTENSION CORD. IF THERE IS NOT A SUITABLE RECEPTACLE AND/OR LOCAL CODES PROHIBIT USE OF A POWER CORD, FIELD WIRING MUST BE PROVIDED. THE APPLIANCE, WHEN INSTALLED, MUST BE ELECTRICALLY 10 GROUNDED IN ACCORDANCE WITH LOCAL CODES OR IN THE ABSENCE OF LOCAL CODES, WITH THE NATIONAL ELECTRICAL CODE, ANSI/NFPA 70. If local codes do not permit use of a flexible power supply cord. OPTIONAL Field Installed Wiring 1. Remove screws to remove wiring junction cover. 2. A standard 1/2" conduit opening has been made in the water heater junction box for the conduit connection. 3. Use wire nuts and connect the power supply wiring to the wires inside the water heater's junction box. 4. Be certain that neutral and line connections are not reversed when making these connections. 5. Replace front plate and secure with screws. FIGURE 24. SCHEMATIC DIAGRAMS FIGURE 25. WARNING DISCONNECT FROM ELECTRICAL SUPPLY BEFORE SERVICING UNIT. REPLACE ALL DOORS AND PANELS BEFORE OPERATING HEATER. IF ANY OF THE ORIGINAL WIRES SUPPLIED WITH THE APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED WITH APPLIANCE WIRE MATERIAL WITH MINIMUM TEMPERATURE RATING OF 105°C AND A MINIMUM SIZE OF NO. 18 AWG. FIGURE 26. T & P VALVE AND PIPE INSULATION (ON SELECTED MODELS) Remove insulation for T & P valve and pipe connections from carton. Fit pipe insulation over the incoming cold water line and the hot water line. Make sure that the insulation is against the top cover of the heater. Fit T & P valve insulation over valve. Make sure that the insulation does not interfere with the level of the T & P valve. Secure all insulation using tape. FIGURE 27. 11 FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do NOT try to light the pilot by hand. B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas i...
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