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Crown Boiler BWC070 Installation Manual Supplement
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Crown Boiler BWC070 Installation Manual Supplement

Crown boiler boiler installation manual supplement
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Download this manual See also: Instruction and Installation Manual
The following pages are copied from the latest edition of the installation manual for
the above boilers, which is not yet in print. These pages cover new vent options that have
been added for these boilers and which are not shown in the current manual. 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.
BWC070, BWC090, BWC120
Installation Manual Supplement
June 12
th
, 2007

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Summary of Contents for Crown Boiler BWC070

  • Page 1 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.

  • Page 2: Vent System Design

    All of these systems are considered “direct vent” because in all of them air for combustion is drawn directly from the 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.
  • Page 3 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.
  • Page 4 Note #1: In Vent Option #1, the 80/125mm concentric straight section (PN 230515) shown in Table 7.4a may be used between the boiler and the first 80/125 x 60/100 reducing elbow. If this is done, the overall maximum vent length is still restricted to that shown for Vent Option #1 in Table 7.1 above.
  • Page 5 FIGURE 7.2: HORIZONTAL CONCENTRIC VENTING (VENT OPTION 1,3) FIGURE 7.3: HORIZONTAL TWIN PIPE VENTING (VENT OPTION 2)
  • Page 6 45 DEGREE ELBOW 230515 39” STRAIGHT Note #1: On 60/100mm vent systems, this may only be used between the boiler and the first 80/125 x 60/100 Reducing elbow (see text). TABLE 7.4b: CROWN CONCENTRIC 80/125 VENT COMPONENTS CROWN PN DESCRIPTION...
  • Page 7 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). AND PRINCIPLE VENT COMPONENTS (VENT OPTIONS 2, 5) SIZE COMPONENT BOILER COLLAR WALL THIMBLE HORIZONTAL TERMINAL VERTICAL TERMINAL BOILER COLLAR WALL THIMBLE...
  • Page 8 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...
  • Page 9 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.
  • Page 10 VENT OPTION # CLASSIFICATION USED IN THIS MANUAL ILLUSTRATED IN FIGURE VENT PIPE PENETRATION THROUGH STRUCTURE AIR INTAKE PIPE STRUCTURE THROUGH STRUCTURE VENT PIPE SIZE AIR INTAKE PIPE SIZE BWC070 BWC090 BWC120 BWC070 BWC090 BWC120 BWC070 BWC090 BWC120 BWC070 BWC090...
  • Page 11 FIGURE 7.10: VERTICAL TWIN PIPE VENT SYSTEM (VENT OPTION 5) FIGURE 7.11: VERTICAL CONCENTRIC VENT SYSTEM (VENT OPTION 6)
  • Page 12 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.
  • Page 13 Apply a small amount of water to the brown gasket on the boiler collar. Push the elbow onto the boiler collar until the bead on the elbow contacts the top edge of the collar (Figure 7.20).
  • Page 14 FIGURE 7.20: INSTALLATION OF REDUCING ELBOW ON CONCENTRIC BOILER COLLAR FIGURE 7.21: DIMENSION “L”...
  • Page 15 6) Use locking bands provided to join adjacent sections of non-cuttable pipe as well as fittings. The male end of the terminal section and other cuttable sections must be held to the female end of the adjoining pipe with at least three #10 x 1/2” sheet metal screws.
  • Page 16 FIGURE 7.24: PREPARING 60/100mm TERMINAL SECTION FOR INSTALLATION IN THE WALL FIGURE 7.25: ATTACHING 60/100mm TERMINAL SECTION...
  • Page 17 The components listed in Table 7.4b are required for 80/125mm installations and are not supplied with the boiler. Before starting assembly of an 80/125mm vent system, make sure that the planned installation is in accordance with the “Vent System Design” section of this manual and that all required 80/125mm vent components are on hand.
  • Page 18 To cut the straight sections listed above refer to Figure 7.31 and the following instructions: a) Determine the required length of the outer pipe. When doing this allow an additional 1” of length for insertion into the female end of the adjoining pipe. Mark the cut line on the outer pipe. b) Remove the plastic inner pipe by pulling it out from the female end.
  • Page 19 3) Joining Pipe - a) Start assembly of the vent system at the boiler. Lubricate the brown gasket in the boiler vent collar with a few drops of water. b) Push the male end of the first fitting into the boiler collar until it bottoms out. The male end of cuttable sections should go 1”...
  • Page 20 4) 80/125mm Horizontal Terminal Installation - a) Cut a 5-1/2” diameter hole through the exterior wall at the planned location of the horizontal terminal. b) Measure distance “L” from the outside surface of the exterior wall to the end of the last fitting as shown in Figure 7.33a.
  • Page 21 FIGURE 7.33c: CUTTING INNER PIPE OF 80/125mm HORIZONTAL TERMINAL FIGURE 7.33d: COMPLETING 80/125mm HORIZONTAL TERMINAL INSTALLATION...
  • Page 22 5) Snorkel Terminal Installation - The Snorkel Kit (PN 230540) consists of the following (Also see Figure 7.34): Key # Part # Description 230541 Support Elbow 230542 Lower Wall Bracket 230543 Air Intake Section 230544 Wall Bracket 230545 Terminal Elbow 230546 Exhaust Terminal 230527...
  • Page 23 If the roof is sloped, cut a hole large enough for the terminal to pass through the roof while remaining plumb. Caution: If the boiler is installed directly under the hole, cover it while cutting the hole to prevent saw dust and other debris from falling into the boiler.
  • Page 24 FIGURE 7.35b: CUTTING VERTICAL TERMINAL FIGURE 7.35c: COMPLETING VERTICAL TERMINAL INSTALLATION...
  • Page 25 7) Chimney Chase Installation - A vertical 80/125mm vent system can be installed in an unused masonry chimney. This installation is similar to other vertical installations with the following exceptions (Also see Figure 7.36): a) The chimney chase elbow kit (PN230530) is used at the base of the chimney. This kit consists of a support elbow and a mounting bracket.
  • Page 26 Remove the collar from the boiler (this may be easier if a twisting motion is applied to the collar while removing it). c) Lubricate the brown gasket in the female end of the plastic vent stub (inside the boiler) with a few drops of water.
  • Page 27 Clean the exterior of the male end of the first piece of pipe and the inside of the vent collar on the boiler. Remove dirt, grease, and moisture from the surfaces to be sealed. Dry surfaces or allow to dry thoroughly.

This manual is also suitable for:

Bwc090Bwc120