valutazioni - 3, GPA: 5
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Model Air Intake Vent 81 - 211 3 inches 3 inches 286 4 inches 4 inches Table 3C Air Intake/Vent Piping Sizes Increasing or decreasing combustion air or vent piping is not authorized. NOTICE Minimum / Maximum allowable combustion air and vent piping lengths are as follows: Combustion Air = 12 equivalent feet minimum / 100 equivalent feet maximum Vent = 12 equivalent feet minimum / 100 equivalent feet maximum When determining equivalent combustion air and vent length, add 5 feet for each 90° elbow and 3 feet for each 45° elbow. EXAMPLE: 20 feet of PVC pipe + (4) 90° elbows + (2) 45° elbows + (1) concentric vent kit (CVK3003) = 49 equivalent feet of piping. The appliance output rating will reduce by up to 1.5% for each 25 feet of vent length. NOTICE 3 General venting (continued) Table 3B Approved Stainless Steel Terminations and Adapters Model ProTech Heat Fab Z Flex FasNSeal Saf-T Vent Z-Vent Boiler Adapter Flue Termination Intake Air Termination Boiler Adapter Intermediate Adapter Flue Termination Intake Air Termination Boiler Adapter Flue Termination Intake Air Termination 81 - 211 300715 FSBS3 FSRC3(R.C) 303889 KB80211 9353BUREZ-1* 9392 5300CI 9314TERM 2SVSLA03 2SVSTP03 2SVSRCX03 2SVSTEX0390 286 F303759 FSBS4 FSRC4(R.C.) FSAIH04 303888 KB286600 9454BUREZ-1* 9492 5400CI 9414TERM 2SVSLA04 2SVSTP04 2SVSRCX04 2SVSTEX0490 * = This adapter must be used in addition to the boiler adapter for Saf-T vent pipe as shown in FIG. 3-11, unless approved vent other than standard diameter is used. Consult a Heat Fab representative for questions. Installation & Operation Manual 3 General venting Table 3D Concentric Vent Kit Equivalent Vent Lengths Model Kit Number Equivalent Vent Length 81 - 211 CVK3003 3 feet 286 CVK3007 3 feet Removing from existing vent Follow the instructions in Section 1, page 12 of this manual when removing a boiler from an existing vent system. Vent and air piping Vent and air system: Installation must comply with local NOTICE requirements and with the National Fuel Gas Code, ANSI Z223.1 for U.S. installations or CSA B149.1 for Canadian installations. You must also install air piping from outside to the boiler air intake adapter. The resultant installation is direct vent (sealed combustion). You may use any of the vent/air piping methods covered in this manual. Do not attempt to install the Knight boiler using any other means. WARNING DO NOT mix components from different systems. The vent system could fail, causing leakage of flue products into the living space. Use only approved stainless steel, PVC or CPVC pipe and fittings. For PVC/CPVC use with primer and cement specifically designed for the material used. Vent, air piping and termination: The Knight boiler vent and air piping can be installed through the roof or through a sidewall. Follow the procedures in this manual for the method chosen. Refer to the information in this manual to determine acceptable vent and air piping length. Optional room air Optional room air is intended for NOTICE commercial applications. Combustion air piping to the outside is recommended for residential applications. Commercial applications utilizing the Knight boiler may be installed with a single pipe carrying the flue products to the outside while using combustion air from the equipment room. In order to use the room air venting option the following conditions and considerations must be followed. • The unit MUST be installed with the appropriate room air kit (Table 3E). • The equipment room MUST be provided with properly sized openings to assure adequate combustion air. Please refer to instructions provided with the room air kit. • There will be a noticeable increase in the noise level during normal operation from the inlet air opening. • Using the room air kit makes the unit vulnerable to combustion air contamination from within the building. Please review Section 1, Prevent Combustion Air Contamination, to ensure proper installation. • Vent system and terminations must comply with the standard venting instructions set forth in this manual. WARNING When utilizing the single pipe method, provisions for combustion and ventilation air must be in accordance with Air for Combustion and Ventilation, of the latest edition of the National Fuel Gas Code, ANSI Z223.1, in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and Equipment, or applicable provisions of the local building codes. Table 3E Optional Room Air Kit Model Kit Number 81 - 211 KIT30052 286 KIT30053 Air contamination Pool and laundry products and common household and hobby products often contain fluorine or chlorine compounds. When these chemicals pass through the boiler, they can form strong acids. The acid can eat through the boiler wall, causing serious damage and presenting a possible threat of flue gas spillage or boiler water leakage into the building. Please read the information given in Table 1A, page 11, listing contaminants and areas likely to contain them. ...