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Фрагмент инструкции
These include the vent system, gas piping for the appliance, Fresh Air Kit, and the electrical wiring. (The fan option is available for louvered models only. Electric ignition models will require electrical service to junction box). The appliance can be mounted on any of the following surfaces: 1. A flat, hard combustible (burnable) surface. 2. A raised wooden platform. 3. Four (4) corner supports. (Example: Four (4) concrete masonry blocks.) These supports must be positioned so they contact all four (4) perimeter edges on the bottom of the unit. Locate and mark the center point of the vent pipe using a nail on the underside of the roof. Drive the nail through the center point. Mark the outline of the roof hole around this center point. NOTE: Size of the roof hole dimensions depend on the pitch of the roof. There must be a 1 inch clearance (25mm) to the vertical pipe sections. This clearance is to all combustible material. Cover the opening of the vent pipe and cut and frame the roof hole. Use framing lumber the same size as the roof rafters and install the frame securely. Flashing anchored to frame must withstand high winds. The storm collar is placed over this joint to make a watertight seal. Non-hardening sealant should be used to completely seal this flashing installation. Determining Minimum Vent Height Above the Roof. WARNING: Major U.S. building codes specify minimum chimney and/or vent height above the roof top. These minimum heights are necessary in the interest of safety. These specifications are summarized in Figures 14 and 15. LOWEST DISCHARGE VENT CAP OPENING GAS VENT H ROOF PITCH IS X/12 H (Min.) -Minimum height fromroof to lowest discharge opening Note that for steep roof pitches, the vent height must be increased. In high wind conditions, nearby trees, adjoining roof lines, steep pitched roofs, and other similar factors can result in poor draft, or down-drafting. In these cases, increasing the vent height may solve this problem. General Maintenance Conduct an inspection of the venting system semi-annually. Recommended areas to inspect are as follows: 1. Check areas of the venting system which are exposed to the elements for corrosion. These will appear as rust spots or streaks and, in extreme cases, holes. These components should immediately be replaced. 2. Remove the cap and shine a flashlight down the vent. Remove any bird nests or other foreign material. 3. Check for evidence of excessive condensate, such as water droplets forming in the inner liner and subsequently dripping out at joints. Condensate can cause corrosion of caps, pipe and fittings. It may be caused by having excessive lateral runs, too many elbows and exterior portions of the system being exposed to cold weather. 4. Inspectjoints toverifythatno pipesections or fittings havebeen disturbed and, consequently, loosened. Also, check mechanical supports, such as wall straps or plumbers’ tape for rigidity. Aremovablepanelorothermeansmustbeprovidedintheenclosure for visual inspection of the flue connection. NOTE: This also pertains to vertical vent systems installed on the outside of the building. Installing the Vent System in a Chase A chase is a vertical box-like structure built to enclose the gas appliance and/or it’s vent system. Vertical vent runs on the outside of a building may be, but are not required to be installed inside a chase. CAUTION: Treatment of firestop spacers and construction of thechasemayvarywiththe typeofbuilding.These instructions are not substitutes for the requirements of local building codes. Therefore, your local building codes must be checked to determine the requirements for these steps. NOTE: When installing this vent system in a chase, it is always good building practice to insulate the chase as you would the outside walls of your home. This is especially important for cold climate installations. Upon completion of building your chase framing, install the vent system by following the instructions in this manual. Remember to build the chase large enough so that minimumclearanceofcombustiblematerials(includinginsulation) to the vent system are maintained. ROOF PITCH H (Min.) Flat to 6/12 12" (305 mm) 6/12 to 7/12 15" (381 mm) Over 7/12 to 8/12 18" (457 mm) Over 8/12 to 16/12 24" (610 mm) Over 16/12 to 21/12 36" (914 mm) WARNING! This appliance must not be connected to a chimney flue servicing a separate solid fuel or gas fuel burning appliance. Figure 13 Page 12 19400-3-0406 VENTING (CONT) Vent Size Model BVD34FP series uses a 4" B-Vent for operation. Models BVD36FP and BVP42FP series use a 6" B-Vent for operation. Never downsize venting diameters. Clearances Vent clearances are per vent manufacturer's specifications Vent Configuration Various venting configurations are shown in Figures 14 and 15 from which maximum vent runs can be determined. Offset Venting - With Elbows Maximum horizontal distance is 50% of vertical vent height WARNING - RISK OF FIRE! Always maintain minimum clearances or greater ar...
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