Évaluations - 1, GPA: 5
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Facilité d'utilisation
These options include: 1) 80/125mm concentric venting may be used to achieve longer vent runs. 2) 80/125mm concentric venting may be used for vertical vent applications. 3) An 80/125mm concentric snorkel kit is now offered. 4) Metal-Fab “Corr/Guard” may now be used for stainless steel vent applications. Refer to the installation manual supplied with the boiler for important warnings and other information not covered in this supplement. VII Venting WARNING FAILURE TO VENT THIS BOILER IN ACCORDANCE WITH THESE INSTRUCTIONS COULD CAUSE FLUE GAS TO ENTER THE BUILDING RESULTING IN SEVERE PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH: * Do not attempt to vent this boiler with galvanized, PVC, or any other vent components not listed in Table 7.4. * Do not attempt to mix components from different approved vent systems. * Do not obtain combustion air from within the building. * Do not install a barometric damper or drafthood on this boiler. CAUTION Moisture and ice may form on the surfaces around the vent termination. To prevent deterioration, surfaces should be in good repair (sealed, painted, etc.). A. Vent System Design There are four basic ways to vent this boiler: • Horizontal (“Side Wall”) Concentric Venting - Vent system exits the building through an outside wall. Concentric venting consists of a “pipe within a pipe”. Flue gas exits the building through the inner pipe and combustion air is drawn into the boiler through the space between the inner and outer pipe. • Horizontal (“Side Wall”) Twin Pipe Venting - Vent system exits the building through an outside wall. Combustion air and flue gas are routed between the boiler and outdoors using separate pipes. • Vertical Concentric Venting - Vent system exits the building through the roof. Concentric venting consists of a “pipe within a pipe”. Flue gas exits the building through the inner pipe and combustion air is drawn into the boilerthrough the space between the inner and outer pipe. • Vertical Twin Pipe Venting - Vent system exits the building through a roof. Combustion air and flue gas are routed between the boiler and outdoors using separate pipes. All of these systems are considered “direct vent” because in all of them air for combustion is drawn directly fromthe outdoors into the boiler. A description of all of these venting options are shown in Tables 7.1 and 7.9. For clarity, these vent options are numbered from 1 to 6. One of the vent option columns in Tables 7.1 or 7.9 must match the planned vent and air intake system exactly. In addition, observe the following guidelines: 1) Approved vent systems - Use only one of the approved vent systems shown in Tables 7.4 or 7.5. These vent systems fall into two basic categories: • Concentric Vent System - The standard boiler is supplied with a concentric vent system having a maximum usable length of 25” (Figure 1.1). For longer runs, additional straight lengths and elbows are available fromCrown. In some cases, larger diameter concentric pipe must be used. Each Crown concentric vent component consists of an inner pipe of polypropylene and the outer pipe of steel. Integral gaskets on each concentric fitting provide a gas tight seal. A list of all Crown concentric vent components is shown in Table 7.4. In this manual, concentric pipe sizes are called out in terms of the inner and outer pipe nominal diameters inmillimeters. For example, “60/100mm” pipe consists of a 60mm exhaust pipe inside a 100mm diameter outer pipe. • Twin Pipe Vent Systems - Approved vent systems are made of a special stainless steel alloy (AL29-4C) for protection against corrosive flue gas condensate. They are designed to provide a gas tight seal at all joints and seams so that flue gas does not enter the building. Each approved vent system has a unique method for installation - do not attempt to mix components from different vent systems. A list of approved twin pipe vent systems is shown in Table 7.5. Note that a special vent collar (Crown PN 230510) is required if the boiler is to be ventedwith one of the approved stainless vent systems. 11 2) Maximum Vent and Air Intake Lengths - The maximum length of the vent air intake piping depends upon the vent option selected and the boiler size. See Table 7.1 or 7.9 for the maximum vent length. In horizontal vent systems, the lengths shown in Table 7.1 are in addition to the first standard elbow on top of the boiler. For vertical vent systems, the maximum vertical vent lengths shown in Table 7.9 are in addition to two standard radius elbows. If more elbows are desired, the maximum allowable vent length must be reduced by the amount shown in Table 7.8 for each additional elbow used. Termination fittings are never counted, although the length of the concentric terminal section is counted. Example: A 60/100mm concentric vent system is planned for a horizontally vented BWC120 which has the following components: 80/125 x 60/100mm Reducing Elbow (supplied with the boiler) 5ft Straight Pipe 90 elbow 1-1/2ft Stra...
Ce manuel est également adapté pour les modèles :Chauffe-eau - BWC090 (7.36 mb)
Chauffe-eau - BWC120 (7.36 mb)