Crown Boiler BWC150/225 User's Manual
Contents
1. FLASHING CTABLE X 4b 2 NORMAL SNOW LINE ROOF LINE BWC BOILER FIGURE 1 7 VERTICAL CONCENTRIC VENT SYSTEM VENT OPTION 6 B Concentric Vent Adapter Kit Installation 1 The Concentric Vent Adapter Kits include BWCI50 BWC225 230539 230575 Concentric Condensate Collector 240552 240552 Condensate Collector Adapter 240560 6 of 1 2 Clear PVC Tubing 240557 1 2 Hose Clamps 2 Where the use of silicone is called for in the following instructions use GE RTV106 for the vent adapters and any general purpose silicone sealant such as GE RTV102 for the air inlet piping connection a Start assembly of the air intake box by first removing the hose clamp shipped on the BWC vent collar Bend the three hose clamp tabs on this collar inward slightly b Place the gasket over the vent collar and air intake collar as shown in Figure 1 8 The gasket should fit snugly against the vent collar and air intake collar with no gaps c Bend the three hose clamp tabs on the vent collar outward slightly d Clean the exterior of the male end and interior of the female end of the stainless vent adapter 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 e the male end of the stainless vent adapter apply 4 wide bead of silicone approximately 1 2 from the end of the pipe f Insert the male en2. the 80 125 terminal and a 6 1 2 diameter hole for the 100 150 terminal If the roof 15 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 b Install the roof flashing using standard practice for the roofing system on the structure c If not already done assemble the venting system inside the building The last section of pipe needs to be on the same center line as the terminal and within 19 1 4 80 125 or 28 100 150 of the top edge of the roof flashing Figure 1 132 d Measure distance H from the top edge of the storm collar to the end of the last fitting as shown in Figure 1 13a e Add 1 to distance Carefully mark this length on the pipe as shown in Figure 1 13b f Cut the outer pipe only at the point marked in Step e using aviation shears a hacksaw or an abrasive wheel cutter Be careful to cut the pipe square De burr the cut end with a file or emery cloth Place a mark on the aluminum inner pipe 3 8 beyond the end of the outer pipe Figure 1 13b Use a fine tooth hacksaw to cut the aluminum pipe and be careful to cut the pipe square De burr the cut edge of the aluminum pipe with a file or emery cloth h Make a mark on the terminal section 1 from the cut end of the outer pipe as shown in Figure 1 13b i S
3. CONCENTRIC 80 125 VENT COMPONENTS VENT OPTIONS 3 8 USED ON CROWN PN DESCRIPTION SIZE VENT COMMENTS OPTION 90 DEGREE EL STANDARD 80 125mm 3 8 55 90 DEGREE EL SWEEP 80 125mm 3 8 19 1 2 STRAIGHT 80 125 3 8 TELESCOPING STRAIGHT 80 125 3 8 HORIZONTAL TERMINAL 80 125 3 lE VERTICAL TERMINAL 80 125mm 230535 SLOPED ROOF FLASHING 80 125 NOTE 2 SUPPORT ELBOW WITH 230530 CHIMNEY CHASE BRACKET 80 125mm NOTE 3 Table 1 6a Notes 1 Vertical terminal can be used with either of the roof flashings listed beneath it 2 Sloped roof flashing suitable for roof angles between 25 and 45 degrees 3 Used at base of vertical run inside unused masonry chimney TABLE 1 6b CROWN CONCENTRIC100 150 VENT COMPONENTS VENT OPTIONS 8 9 USED ON CROWN PN DESCRIPTION SIZE VENT COMMENTS OPTION owwa soo wename _ 230564 TELESCOPING STRAIGHT 100 150mm ADJUSTABLE FROM 12 1 2 TO 17 1 2 230570 VERTICAL TERMINAL 100 1 50 1 230571 FLAT ROOF FLASHING 100 150mm 9955 230572 SLOPED ROOF FLASHING TODAS NOTE 2 SUPPORT ELBOW WITH 230568 CHIMNEY CHASE BRACKET 100 150mm 3 Table 1 66 Notes 1 Vertical terminal can be used with either of the roof flashings listed beneath it 2 Sloped roof flashing suitable for roof angles between 25 and 45 degrees 3 Used at base of vertical run inside unused masonry chimney VERTICAL TERMINA CTABLE X 4b
4. Intake Terminal Location Observe the following limitations on the vent terminal location also see Figure 1 3 When locating a concentric terminal observe the limitations outlined below for vent terminals Vent terminal must be at least 1 foot from any door window or gravity inlet into the building The bottom of terminal must be at least 12 above the normal snow line In no case should it be less than 12 above grade level The bottom of the vent terminal must be at least 7 feet above a public walkway Do not install the vent terminal directly over windows or doors The bottom of the vent terminal must be at least 3 feet above any forced air inlet located within 10 feet A clearance of at least 4 feet horizontally must be maintained between the vent terminal and gas meters electric meters regulators and relief equipment Do not install vent terminal over this equipment Do not locate the vent terminal under decks or similar structures Top of vent terminal must be at least 5 feet below eves soffits or overhangs Maximum depth of overhang 15 3 ft Vent terminal must be at least 6 feet from an inside corner Under certain conditions water in the flue gas may condense and possibly freeze on objects around the vent terminal including on the structure itself If these objects are subject to damage by flue gas condensate they should be moved or protected e If possible install the vent and air intake terminals on a wall away f
5. CReWN Boiler Co DESIG NEED D BWC Series BWC150 225 CONCENTRIC VENTING INSTALLATION INSTRUCTIONS These instructions must be affixed on or adjacent to the boiler Models WARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or loss of life For assistance or additional information con 150 sult a qualified installer service agency or the gas supplier This boiler requires a special venting system Read these BWC225 instructions carefully before installing CROWN Boiler Co Manufacturer of Hydronic Heating Products Box 14818 36331 Street Philadelphia PA 19134 Tel 215 535 8900 Fax 215 535 9736 www crownboiler com Table of Contents A Concentric Vent System Design 2 Concentric Vent Adapter Installation 9 C Assembly of Crown Concentric Venting Condensate Drain 11 1 2 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 1 6 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 drafthood this boiler CAUTION M
6. RCED AIR INLET GAS METER SHOWN ELECTRIC METER 4 FT MIN REGULATOR S RELIEF EQUIPMENT NOTE TERMINAL FOR STAINLESS VENT NOT SHOWN FIGURE 1 3b LOCATION OF VENT TERMINAL RELATIVE TO METERS AND FORCED AIR INLETS 5 FT MIN CONCENTRIC VENT TERMINAL SHOWN OR CROWN STAINLESS VENT TERMINAL NOTE AIR INLET TERMINAL FOR STAINLESS VENT NOT SHOWN FIGURE 1 3c POSITIONING VENT TERMINAL UNDER OVERHANGS TABLE 1 4 VENT AIR INTAKE FITTING EQUIVALENT LENGTH VENT FITTING EQUIVALENT LENGTH ft 80 125mm 90 CONCENTRIC ELBOW 80 125mm 90 SWEEP CONCENTRIC ELBOW 80 125mm 45 CONCENTRIC ELBOW Wwswesesweeconcwmicmow TABLE 1 5 SUMMARY OF VERTICAL VENTING OPTIONS VENT OPTION CLASSIFICATION USED IN THIS VERTICAL VERTICAL MANUAL CONCENTRIC CONCENTRIC VENT PIPE PENETRATION THROUGH STRUCTURE AIR INTAKE PIPE STRUCTURE THROUGH STRUCTURE eee VENT PIPE SIZE 80 125 mm CONCENTRIC 100 150 mm CONCENTRIC AIR INTAKE PIPE SIZE BWC225 BWC150 ROOF VENT TERMINAL CROWN 230532 CROWN 230570 CONCENTRIC TERMINAL CONCENTRIC TERMINAL TABLE 1 6a TABLE 1 65 VENT MATERIAL CROWN 80 125 mm VENT CROWN 100 150 mm VENT COMPONENTS SHOWN IN COMPONENTS SHOWN IN AIR INTAKE MATERIAL TABLE 1 6a TABLE 1 6b gt n gt gt gt lt gt LL gt aa 4 gt Z gt TABLE 1 CROWN
7. d although the length of the concentric terminal section is counted Example 3 4 5 A 80 125mm concentric vent system is planned for a horizontally vented BWC150 which has the following components Standard Radius 90 Elbow 5ft Straight Pipe Standard Radius 90 Elbow 1 1 2ft Straight Pipe 45 Elbow Uncut Terminal Section The Vent Option 3 column in Table 1 1 describes a horizontal direct vent system using 80 125mm concentric vent pipe From this column we see that a BWC150 may have a vent length of up to 55ft The first 90 standard radius elbow is not considered The length of the terminal section not including the terminal itself is approximately 22 1 1 84ft installed From Table 1 4 we see that the equivalent length of the 80 125mm 90 elbow is 8 5ft and that the equivalent length of the 45 degree elbow is 3 0ft The total equivalent length of the planned venting system is therefore 5ft Straight 8 5ft 90 Elbow 1 5ft Straight 3 0ft 45 Elbow 1 84ft Uncut Terminal Section 19 84ft Since Table 1 1 shows a maximum allowable vent length of 55ft the planned vent system length is acceptable Minimum Vent and Air Intake Lengths Observe the minimum vent lengths shown in Tables 1 1 and 1 5 Permitted Terminals for Horizontal Venting Vent Option 3 80 125mm Concentric Vent Terminal Crown PN 230531 Vent Option 4 100 150mm Concentric Vent Terminal Crown PN 230569 Horizontal Vent and Air
8. d of the stainless vent adapter into the boiler vent collar until it bottoms out Apply an additional bead of silicone over the outside of the joint and smooth out h Replace and tighten the clamp on the vent collar 1 Remove one BWC150 or two BWC2295 of the 10 sheel metal screws on the top of the rear jacket panel and place the air intake box over the vent and onto the boiler j Use the exposed holes to line up the air intake box and gasket k Insert the concentric condensate collector into the stainless vent adapter and the air intake box until the bead on the collector bottoms out on the air intake box collar Turn the fitting so that the threaded stub faces to the right 1 Square up the air intake box and the foam rubber gasket to the boiler jacket and loosely attach the box to the rear jacket panel with one of the previously removed 10 sheet metal screws m Drill a single 1 8 hole through one of the mounting holes on the opposite side of the air intake box and attach the box to the jacket with one of the 10 sheet metal screws This will insure the rest of the mounting holes line up n Drill 1 8 holes in through the remaining mounting holes and attach the air intake box and gasket to the boiler jacket with the remaining 10 sheet metal screws 0 Apply pipe thread sealant tape not supplied to the 90 barbed hose fittings Attach one to the condensate collector adapter and the other to the bottom of the tapped condensate trap
9. de in Step 2d above is covered On other fittings the bead on the male pipe will bottom out on the collar Figure 1 11b c The male end of cuttable fittings must be held to the collar with three 10 x 1 2 sheet metal screws Drill a 1 8 hole through both outer pipes to start this screw Use a drill stop or other means to ensure that the drill bit does not penetrate more than 3 8 into the outer pipe Do not use a sheet metal screw longer than 1 2 Figure 1 11 d Use locking bands provided with all fittings to secure non cuttable pipe as well as fittings to the boiler collar Figure 1 11b e Use the same method to join all remaining vent components except for the terminal 4 Horizontal Terminal Installation Insertion Mark 8 83 S19 173 Sheet Metal Screws 378 Exposed Drill 0 E Gauge Drill Three Equally Spaced 1 8 Holes Through Both Oufer FIGURE 1 11a JOINING CUTTABLE PIPE PIOS Locking Band FIGURE 1 11b JOINING NON CUTTABLE PIPE 13 a Cut 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 1 12a c Add 1 1 4 to distance L Carefu
10. f all vertical vent terminals see Figure 1 7 The top of the vent pipe must be at least 2 feet above any object located within 10 feet The bottom of the air inlet terminal must be at least 12 above the normal snow accumulation that can be expected on the roof The terminal used in Vent Options 8 amp 9 has a fixed distance above the storm collar of 19 If a greater distance is needed to provide the clearance above the snow line build a chase on the roof and mount the vertical terminal on top of the chase Wall thimbles Concentric vent has a zero clearance to combustibles and therefore does not require the use of wall thimbles Pitch of Horizontal Piping Pitch all horizontal piping 5 8 per foot so that any condensate which forms in the piping will run towards the boiler 10 Supporting Pipe Support Crown concentric venting near the female end of each straight section of pipe Exception Vertical runs of concentric pipe in an unused chimney Figure 1 14 need only be supported at the terminal and at the base of the run FOR STAINLESS VENT NO CONCENTRIC VENI SHOWN OR CROWN STAINI RMINAL 12 MIN 12 MIN RMAL SNOW LINE FIGURE 1 3a LOCATION OF VENT TERMINAL RELATIVE TO WINDOWS DOORS GRADE LESS THAN 10 F FO
11. liable operation Do not lubricate concentric gaskets with anything other than water Do not attempt to cut any piping except as permitted in this section When cutting these sections make sure all cuts are square and allow for proper insertion Do not attempt to try to mix this concentric pipe with other venting systems 1 The components listed in Table 1 6 are required for 80 125mm and 100 150mm installations and are not supplied with the BWC150 225 boilers Before starting assembly of the vent system make sure that the planned installation is in accordance with the Vent System Design section of this manual and that all required vent components are on hand These components are available through Crown distributors 2 Cutting Straight Pipe The following straight pipe sections may be cut 80 125 Part 100 150 Part 230517 230560 19 1 2 Straight 230515 230562 39 Straight These sections have a plain male end without beads see Figure 1 9a They are always cut from the male end Sections not shown on the above list may not be cut These sections have beads on the male end Figure 1 9b To cut the straight sections listed above refer to Figure 1 10 and the following instructions J FIGURE 1 9a CUTTABLE STRAIGHT SECTION BEAD FIGURE 1 9b NON CUTTABLE STRAIGHT SECTION a Determine the required length of the outer
12. lip the terminal section through the roof from the outside Push into the last section of vent pipe until the mark made in Step h is not longer visible Secure the terminal to the last piece of pipe with three 10 x 1 2 sheet metal screws Drill a 1 8 hole through both outer pipes to start these screws Use a drill stop or other means to ensure that the drill bit does not penetrate more than 3 8 into the outer pipe Do not use a sheet metal screw longer than 1 2 Secure the terminal section to the inside of the roof structure using the mounting bracket provided with the terminal Figure 1 13c 7 Chimney Chase Installation A vertical 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 1 14 a The chimney chase elbow kit 80 125 PN230530 100 150 PN 230568 is used at the base of the chimney This kit consists of a support elbow and a mounting bracket Slip the elbow over the M10 x 35 screw in the support bracket Determine the desired vertical location of the support elbow in the chimney and mark the location of the pin on the back of the support bracket on the back wall of the chimney Drill a 7 16 dia x 2 1 2 deep hole at this location to support the back of the bracket The front of the elbow mounting bracket is supported by the bottom of the opening into the chimney or by an installer supplied bracket b Construct a wea
13. lly mark this length on the pipe as shown in Figure 1 12b d Remove the aluminum inner pipe from the terminal by gently pulling on it from the male end Set aside e Cut the outer pipe only at the point marked in Step c using aviation shears a hacksaw or an abrasive wheel cutter Be careful to cut the pipe square De burr the cut end with a file or emory cloth f Reinstall the aluminum inner pipe in the terminal making sure that the female end of this pipe is completely bottomed out over the aluminum male connection visible behind the air intake grill Place a mark on the aluminum inner pipe 3 8 beyond the end of the outer pipe Figure 1 12c Use a fine tooth hacksaw or hand shears to cut the aluminum pipe and be careful to cut the pipe square if necessary the aluminum pipe can be removed from the terminal again for cutting De burr the cut edge of the aluminum pipe with a file or fine sandpaper Make a mark on the terminal section 1 from the cut end of the outer pipe as shown in Figure 1 12c h Slip the terminal section through the wall from the outside Pass the terminal through the inner wall plate and push into the last section of vent pipe until the mark made in Step h is not longer visible Figure 1 124 Secure the terminal to the last piece of pipe with three 10 x 1 2 sheet metal screws Drill a 1 8 hole through both outer pipes to start these screws Use a drill stop or other means to ensure that the drill bit does not pene
14. m this pump would result in property damage select a pump with an overflow switch and use this switch to shut down the boiler Alternatively if heat 1 a necessity use the overflow switch to trigger an alarm f Do not attempt to move the trap from the location shown in Figure 1 15 Do not attempt to substitute another trap for the one provided with the boiler g The vent shown in Figure 1 15 must be left open for the trap to work properly Condensate p Collector Concentric Adapter Vent Collar EBEN U m 90 Hose Air Intake Box di Barb Clamp Vented Boiler Dust Cap Connection Rubber Ferrule Condensate Trap Tubing Clamp Not Supplied Corrugated Condensate and ert aii m 90 Hose Barb E M Jacket Condensate Drain Pipe Not Supplied Base 1 2 ID Clear PVC Tubing FIGURE 1 15 CONDENSATE DRAIN LINE ASSEMBLY 19 CROWN Boiler Co Manufacturer of Hydronic Heating Products P O Box 14818 3633 I Street Philadelphia PA 19134 Tel 215 535 8900 Fax 215 535 9736 www crownboiler com PN 980241 Rev 0 BWC 12 07
15. oisture and ice may form on the surfaces around the vent termination To prevent deterioration surfaces should be in good repair sealed painted etc Concentric Venting For BWC150 and BWC225 A Concentric Vent System Design In addition to the vent options listed in the installation manual there are two other ways to vent this boiler Horizontal Side Wall Concentric Venting Vent system exits the building through an outside wall Concentric venting consists of a 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 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 boiler through the space between the inner and outer pipe These systems are considered direct vent because air for combustion is drawn directly from the outdoors into the boiler A description of these venting options are shown in Tables 1 1 and 1 5 For clarity the vent options are numbered 3 and 4 for the horizontal options and 8 and 9 for the vertical options One of the vent option columns in Tables 1 1 or 1 5 must match the planned vent and air intake system exactly In addition observe the following guidelines Approved concentric vent systems The concentric vent
16. pipe When doing this allow 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 c Cut the OUTER PIPE ONLY at the point marked in Step a using aviation shears a hacksaw or an abrasive wheel cutter Be careful to cut the pipe square De burr the cut end with a file or emery cloth d Make an insertion mark 1 from the male end of the outer pipe e Cut the plastic inner pipe so that it will protrude 3 8 beyond the male end of the outer pipe when reinstalled in the outer pipe Use a fine tooth hacksaw or a PVC saw to cut the plastic pipe and be careful to cut the pipe square De burr the cut edge of the plastic pipe with a file razor blade or fine sandpaper f Reinstall the inner pipe 3 Joining Pipe FEMALE END OF ADJOINING VENT PIPE PLACE INSERTION MARK HERE VE LINE IN OUTER PIPE OUTER PIPE ya CUT LINE IN INNER PIPE INNER PIPE TEMPORARILY REMOVED FROM OUTER PIPE FOR CUTTING FIGURE 1 10 CUTTING STRAIGHT PIPE 12 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 into the collar until the insertion mark ma
17. plug Figures 1 8 1 15 p Attach the condensate collector adapter to the threaded portion of pipe sticking out the side of the concentric condensate collector so that the hose barb is facing down Slide one end of the 1 2 clear plastic tubing over the hose barb and attach the hose clamp q Run the tubing down the right side panel and into the 1 3 8 knockout located on the lower right of the right side panel Be sure to remove all burrs from the knockout to prevent the hose from being punctured r Remove the plug and black gasket ring from the bottom of the condensate trap located under the boiler s Reinstall the gasket ring onto the tapped condensate trap plug Insert the tapped plug which has the barbed hose fitting attached to it in the base of the trap in place of the original plug Slide the other end of the clear plastic tubing over the hose barb and attach the hose clamp Figure 1 15 t Allow the silicone to cure per the silicone manufacturer s instructions before operating the boiler Concentric Condensate Gollecror 10 x 3 4 Sheet Metal Screw t tle Air Intake Box RWS Intake Box Gasket STainless Vent Adapter Boiler Vent Collar FIGURE 1 8 CONCENTRIC VENT ADAPTER ASSEMBLY 10 C Assembly of Crown Concentric Venting WARNING Failure to follow the instructions could result in flue gas leakage into the combustion air or indoor air resulting in unsafe or unre
18. rms in the boiler vent system collects in both the condensate vent adapter and the sump under the heat exchanger and leaves the boiler through the condensate trap This trap allows condensate to drain from the boiler and vent while retaining flue gases A length of corrugated drain hose is supplied with the boiler and is connected to the trap as shown in Figure 1 15 This hose may be routed through the back of the boiler or to the left side through the knockout provided Route this hose to a drain or other suitable point for disposal Note the following when disposing of the condensate a If the condensate drain line must be extended construct the extension from PVC or CPVC pipe Insert the hose provided with the boiler into the end of the extension as shown in Figure 1 15 b Condensate is slightly acidic Do not use metallic pipe or fittings in the condensate drain line Do not route the drain line through areas that could be damaged by leaking condensate C Some jurisdictions may require that the condensate be neutralized before being disposed of Dispose of condensate in accordance with local codes d Do not route or terminate the condensate drain line in areas subjected to freezing temperatures e Ifthe point of condensate disposal is above the trap it will be necessary to use a condensate pump to move the condensate to the drain In such cases select a condensate pump that is approved for use with condensing furnaces If overflow fro
19. rom the prevailing wind Reliable operation of this boiler cannot be guaranteed if these terminals are subjected to winds in excess of 40 mph Terminal must not terminate in areas that might contain combustion air contaminates such as near swimming pools See Section IV in the installation manual for more information on possible contaminates TABLE 1 1 SUMMARY OF HORIZONTAL VENTING OPTIONS CLASSIFICATION USED IN THIS HORIZONTAL HORIZONTAL MANUAL CONCENTRIC CONCENTRIC ILLUSTRATED IN FIGURE EN SUUS S VENT PIPE PENETRATION THROUGH STRUCTURE AIR INTAKE PIPE PENETRATION THROUGH STRUCTURE VENT PIPE SIZE 80 125 mm 100 150 mm AIR INTAKE PIPE SIZE CONCENTRIC CONCENTRIC VENT TERMINAL Crown 230531 Crown 230569 CONCENTRIC CONCENTRIC AIR INTAKE TERMINAL TERMINAL TERMINAL CROWN CROWN 80 125mm 100 150mm VENT VENT COMPONENTS COMPONENTS SHOWN IN SHOWN IN AIR INTAKE MATERIAL TABLE 1 6a TABLE 1 6b WALL WALL gt an 4 gt x lt gt gt aa 4 gt e gt VENT MATERIAL 7 9 FIGURE 1 2 HORIZONTAL CONCENTRIC VENTING VENT OPTION 3 4 Permitted Terminals for Vertical Ventine Vent Option 8 Use Crown PN 230532 with the appropriate flashing Table 1 6a Vent Option 9 Use Crown PN 230570 with the appropriate flashing Table 1 6b Vertical Vent Terminal Locations Vent Options 8 9 Observe the following limitations on the location o
20. system is optional for the BWC150 BWC225 boilers 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 Concentric pipe sizes are called out in terms of the inner and outer pipe nominal diameters millimeters For example 80 125mm pipe consists of a 80mm exhaust pipe inside a 125mm diameter outer pipe A list of all Crown concentric vent components is shown in Table 1 6 Use only one of the approved concentric vent systems shown in Table 1 6 A concentric vent adapter kit is required to use these boilers with concentric pipe Part numbers for these kits are BWCI50 P N 230550 BWC225 P N 230555 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 1 1 or 1 5 for the maximum vent length In horizontal vent systems the lengths shown in Table 1 1 are in addition to the vent components which come with the Air Intake Box Kit and one standard radius elbow For vertical vent systems the maximum vertical vent lengths shown in Table 1 5 are in addition to the vent components which come with the Air Intake Box Kit and two standard radius elbows If more elbows are desired the maximum allowable vent length must be reduced by the amount shown in Table 1 4 for each additional elbow used Termination fittings are never counte
21. ther tight flat roof to cover the top of the old chimney Install the vertical terminal through this roof using the flat roof flashing oLDPIED RUQF FLAT ROOF FLASHING FLASHING 4 SLOPED ROOF FLAT ROOF FIGURE 1 13a DIMENSION H 16 Insertion Mark m ine For Gurer GUY Line For Inner E Lo fp MEN TERMINAL SLIPS OVER STORM COLLAR m QUEM FIGURE 1 13b CUTTING VERTICAL TERMINAL TERMINAL BRACE f B cw INCLUDED WITH TERMINAL SECURE OUTER PIPES WITH 3 10 X 1 2 SHEET METAL SCREWS FIGURE 1 13c COMPLETING VERTICAL TERMINAL INSTALLATION 17 WARNING Do not attempt to construct a vertical vent system inside a chimney that is used to vent a fireplace or other appliances Do not attempt to construct a vertical vent system inside a chimney flue adjacent to another flue used by a fireplace or other appliances VERTICAL TERMINAL FLAT ROOF FLASHING WEATHER TIGHT FLAT ROOF OVER ORIGINAL OPENING LLLI UNUSED CHIMNEY N _ p SUPPORT ELBOW DRILL HOLE IN REAR OF OLD CHIMNEY TO RECEIVE BRACKET PIN PROM BOLLER CHIMNEY CHASE BRACKET INCLUDED WITH SUPPORT ELBOW MLO X MACHINE SCREW FIGURE 1 14 CHIMNEY CHASE INSTALLATION 18 8 Condensate Drain Line In systems where concentric vent is used condensate which fo
22. trate more than 3 8 into the outer pipe Do not use a sheet metal screw longer than 1 2 1 Slip the outer wall plate over the terminal and secure to the wall Figure 1 12d Apply a 1 8 bead of weather resistant RTV over the joint between the outside wall plate and the terminal Secure the other wall plate to the inside wall DIMENSION L ape FIGURE 1 12a DIMENSION L HORIZONTAL TERMINAL DMCS OR LE 1 1 Mark To CUT Uurar TL FIGURE 1 12b CUTTING OUTER PIPE OF HORIZONTAL TERMINAL 14 3 0 Make Sure This Cur Line dg uy Pop Plastig 19998 i loc FIGURE 1 12c CUTTING INNER PIPE OF HORIZONTAL TERMINAL OUTSIDE WALL PLATE SECURE DOUTER PIPES WITH 3 10 X 1 2 SECA Ll SHEET METAL SCREW TA Coe RESISTANT RIV FIGURE 1 12d COMPLETING HORIZONTAL TERMINAL INSTALLATION 15 6 Vertical Terminal Installation In addition to the vertical terminal either Flat Roof Flashing 80 125 PN 230533 100 150 PN 230571 or Sloped Roof Flashing 80 125 PN 230535 100 150 PN 230572 1s required for this installation a Determine the center line of the terminal location on the roof If the roof is flat cut a 5 1 2 diameter hole for
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