Évaluations - 4, GPA: 4.3 ( )

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(USA). • .Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances (NFPA 211). (USA). NFPA 211 requires the chimney to be lined before connect ing the oil-fired water heater. Inspect existing chimney before installing the water heater. Failure to do any of the following can result in serious property damage, severe bodily injury or death: • Clean the chimney, including removal of blockage. • Repair or replace damaged pipe or liner. . Repair mortar and joints. To prevent downdrafts, extend the chimney at least 1m (3 ft.) above highest point where it passes through roof and 610mm (24 in.) higher than any portion of building within 3m (10 ft.). Increase chimney cross-sectional area and height at least 4% per 305m (1,000 ft.) above sea level. Flue Pipe NOTE: Type .L. vent material is generally considered to be not suitable for this application. Flue temperatures may exceed 300°C (572°F). Use flue piping approved for this installation. Long horizontal flue pipes, excessive number of tees and elbows or other obstructions restrict flue gas flow, and can result in the possibility of condensation, flue gas leakage and carbon monoxide emissions. These conditions can lead to serious property damage, severe bodily injury or death. The flue pipe should be the same size as the breech connection on the appliance. The sizes generally are 150mm (6 in.) for burners rated less than 1.00 GPH and 178mm (7 in.) for burners rated for 1.00 to 1.50 GPH. The flue pipe should be as short as possible and installed so that it has a continuous rise of 20mm/m (1/4 in./ft.) of horizontal length from the breech connection on the appliance to the chimney. Elbows should be minimized and the sections of pipe and fittings should be joined with sheet metal screws and straps. Routing should be made in such a way as to avoid sharp turns or unduly long runs. It is recommended that the heater be piped to its own individual flue. Where there is only one flue for both furnace and water heater, various methods are practiced in which the water heater flue enters the chimney above the main smoke pipe. Also, a .Y. fitting is frequently used in combining both the heater and furnace flues, prior to entering the chimney connection (see Figure 4, check with local authorities having jurisdiction). Obtain a gas-tight seal to prevent possible flue gas leakage and carbon monoxide emissions, which can lead to severe bodily injury or death. Draft Regulator This device is used on conventional chimney venting only. It automatically maintains a constant negative pressure in the chimney to obtain maximum efficiency. If the chimney does not develop sufficient draft, the draft control cannot function properly. The heater must be equipped with an approved draft regulator of adequate size. Make sure that the draft regulator diameter is at least as large as the flue pipe diameter. Follow manufacturers recommended instructions for installation. It must be installed in the flue pipe before it enters the chimney and after the Blocked Vent Safety Switch, if one is used. Set the draft regulator at -0.03 in. (0.762mm) of water column, as measured in the flue (between the heater and the draft regulator). Recommended over-fire draft is -0.02 in. (-0.5078mm) of water column. . 7. Chimney Be sure that the chimney is sufficiently high and large enough to meet the specifications of the burner unit installed. Check that there is sufficient draft for the proper burning of oil. At least -0.015 in. (-0.381mm) water column of over-fire draft is recommended. Blocked Vent Safety Switc. Oil-fired water heaters installed in Canada must be fitted with the blocked vent safety switch supplied with your heater. The installation procedure is given below. For further details and information refer to the instruction sheet supplied with the switch. (Not required for JWF307V.) Installation 1. Pierce a 16mm (5/8 in.) dia. hole into the flue pipe 305mm to 457mm (12 to 18 in.) from the breech connection of the water heater. Remove one of the securing nuts from the pipe of the safety switch. Tighten the other securing nut onto the pipe as far as possible. 2. Insert the threaded pipe end into the pierced hole, then install the securing nut, which was removed in step 1, and tighten securely. CAUTION:: Turn "OFF" the electrical supply to the water heater when wiring safety switch. 3. Wire the safety switch in series with L1 of the electrical supply (see Figures 9, 10 & 11). Install and route wiring in an accordance with .Canadian Electrical Code Part 1 (C22.1). and any applicable local codes. CAUTION. If for any reason the system has shut down during operation, the cause of the system failure should be investigated and corrected before resetting the safety switch and re-starting the system. BEND DOWN WHEN MODEL JWF307 IS TO BE FIRED AT THE MAXIMUM RECOMMENDED RATE OF 0.75 GPH, THE FLUE BAFFLE MUST BE ALTERED AS IN THE DIAGRAM. BOTH HALF DISCS MUST BE BENT FLAT AGAINST THE BODY OF THE BAFFLE...

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