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GB125 Concentric Vent

Design Manual

GB125 Concentric Vent Design Manual | 05 .2009

Technical specifications are subject to change without prior notice

9.2. Installation of Rigid Chimney Pipe

The rigid pipe is best suited for straight chimney flues

with no offsets, or requires offsets to be accessible for the

installation of elbows. In all other cases use the UB Flex

kit instead.

If additional elbows are needed inside the chimney,

complete the connection between the chimney

penetration and the elbows first. Coat all gaskets and the

mating pipes with CENTROCERIN® gasket lubricant and

assemble using a slight turning motion.

Before climbing onto the roof, prepare all pipes and

spacers needed for the length of the chimney as

measured in the previous step. Coat all gaskets and

mating pipes with CENTROCERIN® gasket lubricant.

Keep the spacers close by.

Place the two halves of the spacer (Fig.11) around the

pipe and join them together.

The chimney must be thoroughly cleaned before

installing the flue gas system. It is recommended

to use a professional chimney sweep.

Tools needed on the roof

–

Vent pipes with spacers attached

–

Black or stainless steel top end pipe

–

Chimney Cover

–

CENTROCERIN®

–

Hammer drill with masonry bit 1/4” (6mm)

–

4 wall anchors and screws

–

Matching screwdriver

–

Tape measure

–

Carpet knife or similar

WARNING! RISK OF DEATH FROM FALLING.

Take sufficient measures to prevent accidents on

the roof.

Use state of the art safety equipment and take

common sense safety measures.

WARNING! RISK OF INJURY OR DEATH FROM

TOOLS AND EQUIPMENT FALLING FROM THE

ROOF.

Secure tools and equipment against falling from

the roof.

Fig. 11 Spacer

Insert flue gas pipes with the gasket facing up and

equipped with spacer (Fig. 12 Item 1) from above into the

chimney (Fig. 12, Item 2), until the pipe sleeve is a little

above the upper edge of the chimney. Take the next flue

gas pipe and join them together by turning slightly.

Fig. 12 GAK chimney installation

Содержание GB125BE-22

Страница 1: ...For Buderus models GB125BE 22 30 35 Design Manual GB125 Concentric Vent ...

Страница 2: ...2 GB125 Concentric Vent Design Manual GB125 Concentric Vent Design Manual 05 2009 Technical specifications are subject to change without prior notice ...

Страница 3: ...ation requirments for the boiler room 8 4 2 Condensate drain 8 4 3 Annual inspection 8 4 4 Safety distances to combustible material 8 4 5 Terminations 8 4 6 Instructions for inspection and clean out sections 8 5 Installing the flue gas system 9 5 1 General installation notes 9 5 2 Trimming pipes 9 5 3 Installing the pipes 9 5 4 Pipe disassembly 10 5 5 Appliance connection 10 5 6 Installation and f...

Страница 4: ...4 GB125 Concentric Vent Design Manual GB125 Concentric Vent Design Manual 05 2009 Technical specifications are subject to change without prior notice ...

Страница 5: ...or specialists who through their training and experience are knowledgeable in the installation and servicing of heating systems and oil installations This document is a supplement to the boiler manuals and the instructions included with the venting system 1 2 Standards regulations and directives It is the responsibility of the installer to ensure that the system corresponds to all current building...

Страница 6: ...AS AND CARBON MONOXIDE POISONING Insufficient ventilation or leaky flue gas pipes may cause dangerous flue gas leaks Ensure that air intake or exhaust air vents are not closed off or their size reduced The boiler must not be operated until the obstruction has been removed Inform the system user in writing of the fault and its associated dangers WARNING RISK OF DEATH FROM FALLING Take sufficient me...

Страница 7: ...ssential components needed in every installation Refer to the descriptions of the individual system for included items For most systems extra straight pipe and additional elbows must be purchased as needed See list of accessories for every system The GAK system draws combustion air from the roof and may not be suitable for installation in multi flue chimneys where a second flue vents a combustion ...

Страница 8: ...concentric venting system allows installation with zero 0 0 mm clearance to combustibles Therefore no particular protective measures or safety distances are required to combustible material or furniture 4 5 Terminations Terminations must be so positioned as to avoid products of combustion entering openings into buildings or other flues or vents The Buderus concentric vent is designed for indoor in...

Страница 9: ...om cut edges otherwise gaskets will get damaged which can result in the system no longer being air tight and condensate to leak Reinstall the flue gas and air intake pipes 5 3 Installing the pipes Pipes are assembled so that the sleeve points in the direction of the flue gas stream with the gasket on the far side of the pipe when viewed from the boiler Only use original Buderus flue gas pipe gaske...

Страница 10: ...vided hose clamp 5 6 Installation and final assembly 1 Install the termination 2 Follow the installation instructions to waterproof the penetration Follow standard industry practice and consult a specialist if needed 3 On the boiler install a clean out section immediately after the boiler adapter if applicable 4 Connect the termination with the boiler using straight concentric pieces and concentri...

Страница 11: ...aks occur during operation the venting system must be checked for leaks before startup The flue gas line is sufficiently tight if the combustion air intake at the boiler adapter measures no higher than 0 2 CO or a minimum of 20 6 O ring gap test WARNING RISK OF FLUE GAS POISONING Leaky flue gas lines may cause dangerous flue gas leaks Take the boiler out of operation until the leak in the flue gas...

Страница 12: ...e of a steam plume in cold climates Ice can develop on the termination in cold climates Ensure that ice formation does not pose a hazard on public walkways Each boiler must be vented with a separate system In the Commonwealth of Massachusetts a direct vent boiler is required to be accompanied by CO detectors per 527 CMR 31 00 Included items in basic kit Before starting any installation work ensure...

Страница 13: ... Additional straight pipe sections an inspection and clean out piece a suitable roof jack or collar Fig 7 8 as well as at least one elbow must be purchased separately Included items in basic kit Before starting any installation work ensure that all included items Table 5 are present plus any additional pieces Table 6 needed to complete the job Table 5 Part Description Qty 1 7747016312 Concentric b...

Страница 14: ... H x DIA 3 1 2 x19 1 2 90x500mm for DO system 87094904 Roof collar flat roof H x DIA 9 1 2 x19 1 2 240x500mm for DO system 87094812 Roof jack 5 25 12 1 to 12 6 pitch for DO system 87094814 Roof jack 35 55 12 8 to 12 18 pitch for DO system 87094587 Concentric inspection Tee 87094556 Concentric Pipe DN80 125x500 19 500mm 87094560 Concentric Pipe DN80 125x1000 39 1000mm 87094600 Concentric Pipe DN80 ...

Страница 15: ...rawn in with GB125 combustion air and cause service calls For installations in multi flue chimneys with a risk of ambers from wood stoves or similar appliances reaching the top of the chimney optional stainless steel terminations are available See list of accessories Tables 8 10 Minimum chimney chase dimensions to ensure sufficient supply of combustion air Rectangular 5 x 5 120 mm 120 mm Round DIA...

Страница 16: ... degrees 87094570 Concentric Elbow DN80 125x45 45 degrees 87094574 Concentric Elbow DN80 125x87 90 degrees Rigid Pipe for inside the chimney Table 9 Part Number Description 87092078 Single Pipe DN80x250 9 5 250mm 87094588 Single Pipe DN80x500 19 500mm 87094592 Single Pipe DN80x1000 39 1000mm 87094596 Single Pipe DN80x2000 78 2000mm 87094652 Single Pipe Elbow DN80x15 15 degrees 87094648 Single Pipe...

Страница 17: ...ws If it is inaccessible use the UB Flex liner instead of rigid pipe Determine the position of the chimney penetration in the boiler room Position the hole into the chimney such that the vent pipe to the boiler adapter runs at a 5 8 pitch per foot 55mm per meter to allow condensate to drain into the boiler reliably The size of the opening must be sufficient to install the support rail as shown in ...

Страница 18: ...alves of the spacer Fig 11 around the pipe and join them together The chimney must be thoroughly cleaned before installing the flue gas system It is recommended to use a professional chimney sweep Tools needed on the roof Vent pipes with spacers attached Black or stainless steel top end pipe Chimney Cover CENTROCERIN Hammer drill with masonry bit 1 4 6mm 4 wall anchors and screws Matching screwdri...

Страница 19: ...that the terminating black pipe extends at least 13 330mm above the top of the chimney where the cover will be attached This will result in a minimum of 3 75mm clearance of the pipe above the cap Remove the top of the chimney cover Fig 13 Item 1 by pulling it up Ensure it is held by its leash Push the cover over the terminating black pipe and verify that it fits the top of the chimney The base can...

Страница 20: ...ort elbow with CENTROCERIN and assemble using a slight turning motion Allow a 5 8 pitch per foot 55mm per meter toward the boiler Mortar the penetrating pipe in place Slide on the face plate Fig 15 Item 1 and once the mortar has cured mark and drill mounting holes insert wall anchors and screw on the face plate Connection to the boiler Connect the inspection and clean out pipe to the boiler adapte...

Страница 21: ... 5 1 2 Ø 130 mm A stainless steel chimney termination is available for installations with multi flue chimneys and a risk of ambers from wood stoves or similar appliances reaching the top of the chimney The flexible liner may only be installed vertically with a minimum pitch of 15 and never instead of an elbow or a horizontal section You will need to purchase the GAK basic kit Fig 9 the UB Flex kit...

Страница 22: ...h masonry bit 5 8 6mm 4 wall anchors and screws Matching screwdriver Tape measure Carpet knife or similar Wrench or similar weight WARNING RISK OF DEATH FROM FALLING Take sufficient measures to prevent accidents on the roof Use state of the art safety equipment and take common sense safety measures WARNING RISK OF INJURY OR DEATH FROM TOOLS AND EQUIPMENT FALLING FROM THE ROOF Secure tools and equi...

Страница 23: ...er and hold the pipe with one hand Put the cover down onto the chimney crown and pull the pipe up until tight Slide the split ring threads facing up over the flexible pipe and let it snap into a groove in the cover Turn the pipe until the nose in the split ring meets the notch in the cover Caulk around the perimeter of the cover to prevent rain water from entering the chimney and screw down firmly...

Страница 24: ...last white pipe length so that the terminating stainless steel pipe extends at least 11 280mm above the top of the chimney crown where the cover will be sitting This will result in a minimum of 3 75mm clearance of the pipe above the cap The end pipe can always be trimmed later Coat the gasket of the last white pipe and the mating stainless steel pipe with CENTROCERIN and assemble using a slight tu...

Страница 25: ...se clamp until the union is held firmly in place Set the complete chimney cover with the UB Flex pipe attached onto the chimney When looking down into the chimney you should see a fairly straight pipe If major twists and turns occur loosen the hose clamp and pull up on the union If the pipe still has a lot of slack disassemble the union and shorten the UB Flex pipe carefully Reassemble and verify ...

Страница 26: ...nd it is necessary to cut off any smooth section Make cuts perfectly perpendicular to the pipe Disassemble the union and observe the arrows on the main body dictating the direction of the flue gas flow Slide the threaded ring with the threads facing to the loose end over the UB flex pipe Slide the split ring over the corrugated UB flex pipe with the flange facing the lose end and snap into its sec...

Страница 27: ...pipe Only the perforated section of the UB Flex pipe can be connected and it is necessary to cut off any smooth section Make cuts perfectly perpendicular to the pipe Disassemble the union and observe the arrow on the main body dictating the direction of the flue gases The gray gasket must face up Slide the threaded ring with the threads facing up over the UB flex pipe Slide the split ring over the...

Страница 28: ...ction and cleanout Tee to be installed in the vent pipe inside the chimney The Tee is installed in similar fashion to the Union for UB Flex Pipes described above Table 16 Part Number Description 87094676 Inspection and cleanout Tee for UB Flex It comes with a screw cap on the side that allows access for inspection and cleaning It is installed at the bottom of the chimney just above the supporting ...

Страница 29: ...Applications manual 29 GB125 Concentric Vent Design Manual GB125 Concentric Vent Design Manual 05 2009 Technical specifications are subject to change without prior notice Notes ...

Страница 30: ...30 GB125 Concentric Vent Design Manual GB125 Concentric Vent Design Manual 05 2009 Technical specifications are subject to change without prior notice ...

Страница 31: ...Applications manual 31 GB125 Concentric Vent Design Manual GB125 Concentric Vent Design Manual 05 2009 Technical specifications are subject to change without prior notice ...

Страница 32: ...053 Tel 603 552 1100 Fax 603 584 1681 www buderus net Products manufactured by Bosch Thermotechnik GmbH Sophienstrasse 30 32 D 35576 Wetzlar www buderus de Bosch Thermotechnology Corporation reserves the right to make changes without notice due to continuing engineering and technological advances ...

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