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Resumen del manual
Stainless vent manufacturer’s wall thimble part numbers are shown in Table 7.5. Note that concentric vent has a “zero” clearance to combustibles and therefore does not require the use of wall thimbles. TABLE 7.5: PERMISSIBLE STAINLESS STEEL VENT SYSTEMS AND PRINCIPLE VENT COMPONENTS (VENT OPTIONS 2, 5) MANUFACTURER VENT SYSTEM SIZE COMPONENT PART NUMBER HEAT FAB SAF-T VENT EZ SEAL 3 BOILER COLLAR CROWN 230510 3 WALL THIMBLE HEAT FAB 7393, 7393GCS, 5391CI 3 HORIZONTAL TERMINAL CROWN 230511 3 VERTICAL TERMINAL HEAT FAB 9392 PROTECH SYSTEMS INC. FASNSEAL 3 BOILER COLLAR CROWN 230510 3 WALL THIMBLE FSWT3 3 HORIZONTAL TERMINAL CROWN 230511 3 VERTICAL TERMINAL FSBS3 Z-FLEX SVE SERIES III (“Z-VENT III”) 3 BOILER COLLAR CROWN 230510 3 WALL THIMBLE 2SVSWTEF03 3 HORIZONTAL TERMINAL CROWN 230511 3 VERTICAL TERMINAL 24SVSTPF03 METAL-FAB CORR/ GUARD 3 BOILER COLLAR CROWN 230510 3 WALL THIMBLE CGSWWPK(3”) 3 HORIZONTAL TERMINAL CROWN 230511 3 VERTICAL TERMINAL CGSWHTM(3”) NOTES: 1) See vent system manufacturer’s literature for other part numbers that are required such as straight pipe, elbows, firestops and vent supports. 2) Crown 230510 collar replaces factory-mounted concentric collar (Figure 7.16). 16 FIGURE 7.6a: LOCATION OF VENT TERMINAL RELATIVE TO WINDOWS, DOORS, GRADE FIGURE 7.6b: LOCATION OF VENT TERMINAL RELATIVE TO METERS AND FORCED AIR INLETS FIGURE 7.6c: POSITIONING VENT TERMINAL UNDER OVERHANGS 17 9) Pitch of Horizontal Piping - Pitch all horizontal piping so that any condensate which forms in the piping will run towards the boiler: • Pitch Crown horizontal concentric venting 5/8” per foot • Pitch Stainless steel venting 1/4” per foot. 10) Supporting Pipe - Vertical and horizontal sections of pipe must be properly supported: • Support Crown concentric venting near the female end of each straight section of pipe. Exception: Vertical runs of concentric pipe in an unused chinmey (Figure 7.36) need only be supported at the terminal and at the base of the run. • Support stainless steel venting as called for by the vent manufacturer’s instructions. FIGURE 7.7: SNORKEL TERMINAL CONFIGURATION 18 TABLE 7.8: VENT/ AIR INTAKE FITTING EQUIVALENT LENGTH VENT FITTING EQUIVALENT LENGTH (ft) 60/100mm 90° CONCENTRIC ELBOW 4.5 60/100mm 45° CONCENTRIC ELBOW 4.0 80/125mm 90° CONCENTRIC ELBOW 8.5 80/125mm 90° SWEEP CONCENTRIC ELBOW 5.5 80/125mm 45° CONCENTRIC ELBOW 3.0 80/125mm 90° CONCENTRIC SUPPORT ELBOW 8.5 3” SINGLE WALL 90° ELBOW 5.5 3” SINGLE WALL 45° ELBOW 4.0 TABLE 7.9: SUMMARY OF VERTICAL VENTING OPTIONS VENT OPTION # 5 6 CLASSIFICATION USED IN THIS MANUAL VERTICAL TWIN PIPE VERTICAL CONCENTRIC ILLUSTRATED IN FIGURE 7.10 7.11 VENT PIPE PENETRATION THROUGH STRUCTURE ROOF ROOF AIR INTAKE PIPE STRUCTURE THROUGH STRUCTURE ROOF ROOF VENT PIPE SIZE 3” 80/125 mm CONCENTRICAIR INTAKE PIPE SIZE 3” MAXIMUM LENGTHVENTBWC070 49.5ft 49.5ft BWC090 49.5ft 49.5ft BWC120 49.5ft 49.5ft INLETBWC070 49.5ft 49.5ft BWC090 49.5ft 49.5ft BWC120 49.5ft 49.5ft MINIMUM LENGTHVENTBWC070 2ft 2ft BWC090 2ft 2ft BWC120 2ft 2ft INLETBWC070 2ft 2ft BWC090 2ft 2ft BWC120 2ft 2ft VENT TERMINAL STRAIGHT TERMINAL BY VENT SYSTEM MFR. (TABLE 7.5) CROWN #230532 CONCENTRIC TERMINAL (TABLE 7.4b) AIR INTAKE TERMINAL 3” 180° ELBOW (FIGURE 7.10) VENT MATERIAL APPROVED STAINLESS STEEL VENT SYSTEM CROWN 80/125 mm VENT COMPONENTS SHOWN IN TABLE 7.4b AIR INTAKE MATERIAL GALVANIZED OR PVC 19 20 FIGURE 7.10: VERTICAL TWIN PIPE VENT SYSTEM (VENT OPTION 5) FIGURE 7.11: VERTICAL CONCENTRIC VENT SYSTEM (VENT OPTION 6) B. Removing an Existing Boiler From a Common Chimney Read this only if the BWC boiler is replacing an existing boiler that is being removed from a common chimney. This section does not apply to the installation of a BWC boiler. In some cases, when an existing boiler is removed from a common chimney, the common venting system may be too large for the remaining appliances. At the time of removal of an existing boiler, the following steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while the other appliances remaining connected to the common venting system are not in operation. (a) Seal any unused openings in the common venting system. (b) Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition. (c) Insofar as practical, close all building doors and windows and all doors between the space in which all theappliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate asummer exhaust fan. Close fireplace dampers. (d) Place in operation the appliance being inspected. Follow the lighting instructions. Adjust ther...
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Calentadores de Agua - BWC120 (7.36 mb)