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GWS - Venting - Williamson

1. Follow vent pipe manufacturer s instructions to assemble and seal joints Sealant recommended by vent pipe manufac AWARNING Go te turer must be used as indicated in their instructions Vent and combustion air connector piping must be sealed gas tight to prevent possibility of flue gas spillage and carbon monoxide emissions resulting in severe personal injury or death Step 4 Install 5 x 5 x 3 tee 1 Slide tee over vent piping and attach uncrimped end to bottom of draft hood connector Figure 16 Install tee Draft hood a Drill 3 holes in tee for 1 4 sheet metal screws T connector AWARNING Po not allow drill to penetrate vent pipe Drill holes carefully in tee and use only 4 screws to fasten tee to draft hood connector Failure to do so can damage vent pipe causing severe personal injury 5 x 5 x 3 or substantial property damage Tee b Seal all seams and screws with approved sealant Bottom cap 2 Secure bottom cap to tee with duct tape Slide elastomer flashing up around vent pipe and tuck lip into cap s bottom Elastomer opening Seal with approved sealant flashing Step 5 Install rain cap 1 On roof cut 4 hole in top of rain cap and install cap over protruding vent pipe Slide elastomer flashing down around vent pipe and tuck lip into cap s top opening 2 Connect termination coupling to vent pipe using vent pipe manufacturer s specified sealant Figure 17
2. Conclusion Air piping is within limits because air connector piping would only be 17 feet less than the maximum of 25 feet A B Combustion air Step 4 Replanning connector piping length No replanning needed Vent and air piping lengths are within limits C D Vent connector piping length e Elbow Table 4 GWS 063 095 amp GWS Table5 GWS 127 and GWS 158 A 090E Maximum connector Maximum connector pipe Yo lt gt pipe length vent or air length vent or air v GWS 063 GWS 095 amp GWS 090E GWS 127 and GWS 158 K H A 2 alelsl4 s e 7 1 ejajals e r7 5 S 2 a Max length from boiler to Max length from boiler to E K B Vent D c S B Ae gt E ed E Condensate gt _ gt 5 drain line pj y Elbows Note Combustion air connector Note Combustion air connector pipe length A B pipe length A B Vent connector pipe length C D Vent connector pipe length C D 73416 Part Number 550 110 734 1108 13 GWS Gas Fired Water Boilers Venting Manual 8 Direct vent Vertical venting continued Installation Assembly Step 1 Assemble B vent pip ing 1 Install 5 type B support B vent com bustion air run flashing fire stops and storm collar per manufacturer s instruc tions Apply approved sealant to each B vent joint See Figure 12 2 Install type B draft hood connector to bottom of combustion air run Seal with approved sealant Step 2 Prepare
3. 5 Draft hood connector type B 5 5 type B support Single wall stack 5 type B draft hood connector reducer tee dl Cap with hole for vant pipe Pa i Elastomer flashing Air intake pipe 3 pve standard 3 galvanized or aluminum single wall pipe or 3 flexible furnished in kit Part Number 550 110 734 1108 Condensate drain line Vant starter must be by same manufacturer as the vent pipe ry Aa 7008 dryer vent Adequate B Vent with clamp rings for combustion air run less than 30 feet Ta O N Adeguate 3 vent material for vent run and elbows from Z Flex Z Vent Il N one of the following See Note ProTech Systems FasNSeal A GWS boiler e Heat Fab Inc Saf T Vent e ProTech Systems FasNSeal e Flex L International Inc StaR 34 e Z Flex Inc Z Vent Il Adequate sealant specified by vent pipe manufacturer s instructions Adequate 3 PVC galvanized or dryer vent for combustion air supply piping between tee and boiler Note Do not mix types of vent material CSA certification will be void GWS Gas Fired Water Boilers Venting Manual 4 Install vent starter AWARNING Use only the vent starter of the same manufacturer 4 Connect vent starter to blower housing outlet as shown in as the vent components Do not mix components Figure 4 below from different systems The vent system could fail a Dono
4. death or substantial property damage Figure 5 Sidewall Direct Vent or Direct Exhaust Vent Vent termination minimiim clearances Forced air intake Sidewall A 2 direct vent JA termination 1 3 feet fi K O when used S PA 4 ft Direct exhaust W sera t A 1 ft Direct vent termination N If within 10 feet when used 4 A AA Direct exhaust vent lt f sidewall A k od 1 0 ij knn L 4 ft Direct exhaust IN t T N 7 feet W a amp mutes a 1 ft Direct vent W S S KP 1 ANA a Direct exhaust vent gt sidewall termination ai s must use ell Snow os or tee as shown j wis wv 73401 73402 Part Number 550 110 734 1108 7 GWS Gas Fired Water Boilers Venting Manual 6 Direct exhaust Vertical and sidewall venting Installation guidelines 1 2 Do not mix types or manufacturers of vent materials Clean all joints before sealing See vent manufacturer s in structions for cleaning and sealing joints Use their specified sealant Do not use screws Install vent pipe with seams on top of vent horizontal runs Follow requirements on page 6 for vent termination Maintain minimum 2 clearance from combustible materials to vent pipe Vertical venting See Figure 6 Follow vent manufacturer s instructions for venting through roof or unused chimney or vent as raceway e Vent pipe must extend through roof flashing jacket or thimble e Vent may pass through floor inside wall or con
5. Install rain cap P XA Vent pipe Elastomer flashing Rain cap Step 6 Finish installation 1 Complete vent piping to boiler making sure to follow vent pipe manufacturer s instructions and vent manufacturer s special gas vent system vent and combustion air venting supplements 2 Use any of the following to install combustion air connector piping from tee to boiler making sure to seal all joints and seams a 3 Flexible dryer vent A piece of 3 galvanized is required at each end to adapt Seal all pipe joints and seams between pipe and dryer vent with approved sealant b Galvanized or aluminum single wall pipe Seal all joints and seams using approved sealant c 3 PVC Seal all joints using PVC cement 3 Condensate drain line A condensate drain fitting is always required for through roof vents Follow vent manufacturer s instruc tions to install condensate drain line AWARNING Use only silicone tubing rated for at least 400 F for the condensate drain line Using any other material could cause flue gas leakage potentially resulting in severe personal injury death or substantial property damage Part Number 550 110 734 1108 15 GWS Gas Fired Water Boilers Venting Manual 16 W T 8201 W Calumet Rd Milwaukee WI 53223 Part Number 550 110 734 1108
6. property damage termination cap and outside plate with any exterior building material such as siding or wood 4 Cuta5 x 8 rectangular rough opening in inside and outside walls for vent pipe and if used combustion air pipe Use paper template provided with kit AWARNING Sealant recommended by vent pipe manufacturer must be used as indicated in their instructions Vent piping must be sealed gas tight to prevent possibility of flue gas spillage and carbon monoxide emissions resulting in severe personal injury or death Follow vent manufacturer s instructions for support of vent pipe Do not support from termination kit From outside the building 5 Install outside plate 6 Loosely install vent pipe with vent pipe termination in place through the termination cap and outside plate Do not connect pipe or seal to plate From inside the building 7 Install spacers and sleeve if passing through combustible wall 8 Install inside plate If used feed combustion air pipe through inside and outside plates From outside the building 9 Use termination cap to position combustion air pipe against stops on the inside of termination cap 10 Seal outside plate to building Seal around combustion air pipe 11 Install termination cap Set 14 to 34 space between outside plate and stop on vent pipe termination From inside the building 12 Seal around air intake pipe on inside plate 13 Complete vent pipe r
7. with the require ments listed on page 7 Then verify that the vent and air piping will not exceed the length limits given in Section 8 page 12 of this manual before locating boiler or floor roof penetrations 3 You will need to obtain stainless vent pipe and fittings using only the vent systems listed in separate GWI and GWS Vent Component Supplement Also obtain B vent pipe and fittings for the vertical run and floor roof penetrations See Table 3 Figure 3 Vertical direct vent Parts provided in Through Roof or Through Unused Chimney Termination Kit part number 382 200 436WT Figure 2 Vertical direct vent Typical installation showing component identification 1900 5 Type B rain cap with 1 Tee galvanized 5 x 5 x 3 qty 1 ee ron ji 2 Vent clamp qty 5 KE lt 3 Bottom cap galvanized with 472 hole qty 1 storm ring 4 Vent support qty 1 5 Type B For minimum height N adjustable ene 5 Elastomer grippers qty 11 os Instruction 6 Screws sheet metal type A 10 x 1 4 qty 11 a 7 Screws sheet metal type A 10 x 2 qty 3 8 Elastomer flashing qty 2 stop Table 3 Vertical direct vent Parts required but not provided in kit provided by installer see Figure 2 Vent pipe p Fire stop Rain cap galvanized 5 Adjustable flashing type B 5 Fire stop for each floor or attic penetration Storm ring type B 5 Support type B
8. 3 6 from the vent pipe as dictated by the dimensions of the vent termination 6 See Figure 8 Vent must terminate at least one foot above anticipated snow line 7 Install horizontal drain tee as close as possible to boiler in first horizontal run See Figure 8 8 Do not exceed the maximum length given in Table 3 page 4 for either the vent pipe or the air pipe Install Vent Air Intake Termination r Use this kit with wall thicknesses of 2 inches mini mum 24 inches maximum 1 Refer to Figure 9 on page 11 for installation details 2 Remove the sidewall vent kit box from boiler The kit should include the following items e vent termination cap e aluminum inside plate e stainless steel outside plate e anchors for masonry walls 3 Sidewall venting can be installed with pipes side by side or on top of one another with vent pipe on top Do not cover up vent e screws e spacers e ockwashers Figure 8 Direct vent sidewall venting termination Termination mounted vertically Vent pipe must be routed on top of air pipe as shown Horizontal drain tee follow vent pipe manufacturer s instructions to install condensate drain line J 73407 10 Avaava tubing rated for at least 400 F for the first 18 of condensate drain line then other non metallic tubing may be used Using any other material could cause flue gas leakage potentially resulting in severe personal injury death or substantial
9. CERTIFIED GWS Gas Fired Water Boilers Venting Manual Also includes GWS 090E Hazard definitions A DANGER CAUTIO Hazards that will cause severe personal injury death or substantial property damage Hazards that can cause severe personal injury death or substantial property damage ACAUTION Hazards that will or can cause minor personal injury or property damage NOTICE Special instructions on installation operation or maintenance that are important but not related to personal injury or property damage Venting method definitions Direct vent Uses outside combustion air with combustion air connector piping sealed at all joints and seams Also known as sealed combustion All GWS and GWS 090E flue gas vents are pressurized requiring careful sealing of all joints Direct exhaust venting Uses inside combustion air with no combustion air connector piping All GWS flue gas vents are pressurized requiring careful sealing of all joints Also known as non direct venting DO NOT apply direct exhaust venting to GWS 090E boilers they must be direct vented only Chimney draft venting Uses the natural draft provided by a vertical vent or chimney This method cannot be used with GWS boilers NOTICE Chimney draft venting cannot be used for GWS or GWS 090E boilers Vent system must be con structed only using venting materials listed in this Venting Manual Existing vertical vents o
10. Figure 11 e How many elbows will be needed in the vent connector piping from boiler to B vent tee e How many feet of vent piping will be needed for the connec tor runs This would be the sum of dimensions C amp D in Figure 11 e How many elbows will be needed in the air connector piping from boiler to B vent tee e How many feet of air piping will be needed for the connector runs This would be the sum of dimensions A amp B in Fig ure 11 Step 2 Verify that vent connector piping is within al lowable limits Use Table 4 or 5 depending on boiler model to be used Find the row with the B vent length the installation requires Move across to the column with the number of vent elbows needed for the in stallation This number is the maximum allowable vent connector piping length Step 3 Verify that air connector piping is within al lowable limits Use Table 4 or 5 on page 13 depending on boiler model to be used Find the row with the B vent length the installation requires Move across to the column with the number of air pipe elbows needed for the installation This number is the maximum allowable air pipe connector piping length Step 4 Replan boiler location amp piping if piping length of vent or air is too long See if boiler can be moved closer to vertical vent air piping See if you can reduce the number of elbows required vent piping must have 2 eloows minimum in order to provide horizonta
11. and insert vertical vent 1 From top or bottom of combustion air run install vent piping e Top of vent piping must extend 3 above top of rain cap See Figure 2 page 5 e Bottom of vent piping must extend 18 below draft hood connector 2 At each vent joint a Follow vent pipe manufacturer s in structions to assemble and seal joints Sealant recommended by vent pipe manufacturer must be used as indi cated in their instructions b Apply 2 self adhesive elastomer grip pers to vent clamp Grippers must be positioned on clamp as shown in Figure 13 Bend out 2 ears on vent clamp c Fasten clamp around vent pipe with 2 114 screws in top and bottom holes about every 5 feet See Figure 14 Tighten screws until clamp does not turn or slide around vent piping Step 3 Install vent support 1 Apply 1 elastomer gripper to vent sup port 2 Install vent support around vent pip ing just below draft hood connector as shown in Figure 15 Fasten sup port around vent piping with 1 11 screw 3 Tighten screw until support does not turn or slide around vent piping 14 Figure 12 Sealing B vent joints Figure 13 Apply elastomer strips to vent clamps Figure 14 Install vent clamps on vent piping Figure 15 Install vent support Part Number 550 110 734 1108 GWS Gas Fired Water Boilers Venting Manual 8 Direct vent Vertical venting continued Installation Assembly continued
12. cealed space when installed according to vent manufacturer s instructions e Vent may pass through an unused chimney or vent as a raceway if allowed by vent manufacturer and installed per vent manufac turer s instructions Sidewall venting See Figure 7 page 9 Vent must termi nate at least one foot above anticipated snowline Vent must be terminated only with e Tee or elbow with integral screen Tee may be mounted either vertically or horizontally e Elbow or termination coupling with screen not available for StaR 34 Sidewall venting Do not seal vent pipe to inside or outside plate Sidewall venting If passing through noncombustible wall provide hole diameter large enough to insert the vent pipe Install horizontal drain tee as close as possible to boiler in first horizontal run See Figure 6 Do not exceed the maximum vent system length given in Table 3 on page 4 Condensate drain line use only silicone tubing rated for at least 400 F for the first 18 of conden sate drain line then other non metallic tubing may be used Using any other material could cause flue gas leakage potentially resulting in severe personal injury death or substantial property damage On some installations the condensate drain fitting may be omitted provided e Vent manufacturer shows this option in their instruc tions e Vent is sloped toward termination as shown in dotted lines in Figure 6 e The v
13. described in this manual Failure to do so will result in severe personal injury death or substantial property damage Use only the sealant specified by the vent pipe manufacturer applied per their instructions Vent piping must be sealed gas tight to prevent pos sibility of flue gas spillage and carbon monoxide emissions resulting in severe personal injury or death Provide combustion and ventilation air openings as described in the GWS or GWS 090E Boiler Manual Failure to provide adeguate air supply could result in severe personal injury death or substantial property damage USER Please read the following Failure to comply could result in severe personal injury death or substantial property damage This manual is for use only by your gualified heating installer service technician Please see the User s Information Manual for your reference We recommend regular service by a qualified service technician at least annually Part Number 550 110 734 1108 GWS Gas Fired Water Boilers Venting Manual 1 Determine venting method Direct exhaust venting Use only when openings for inside combustion air can be sup plied in accordance with the GWS or GWS 090E Boiler Manual this venting manual and with all applicable codes You must direct vent the boiler if the boiler area may contain contaminants as described in this manual Two direct exhaust vent options are permitted sidewall and vertical per instructions in t
14. e personal injury death or substantial property damage 1 Space terminations apart as shown in Figure 10 below A WARNING Figure 10 Venting multiple GWS boilers K Ge e K ot g A N no Ai Ai 73415 Vertical mount Horizontal mount Note Space terminations to provide a minimum of 1 foot between pipes for U S Installations For Canadian installations provide clearances required by B149 1 or B149 2 Installation Code 11 GWS Gas Fired Water Boilers Venting Manual 8 Direct vent Vertical venting Installation guidelines 1 Codes Install vent and combustion air piping in compliance with all applicable national state local or provincial codes 2 Donot connect e Any other appliance to combustion air or vent piping e Any other appliance into or through chimney when using existing chimney as raceway e Multiple boilers into common vent 3 Vent length limits Position boiler as close as possible to vertical vent air run Do not exceed vent length limits given in Section 8 of this manual B vent limit is 30 feet Vent or air maximum lengths are e GWS 063 GWS 095 amp GWS 090E Max 55 equivalent feet e GWS 127 amp GWS 158 Max 45 equivalent feet 4 Materials and construction e Seal all B vent combustion air joints with approved silicone seal ant Dow Corning 700 or 732 General Electric 108 or 800 or sealant specified by vent pipe manufacturer B vent sections mus
15. ent is installed per boiler manufacturer s and vent manufacturer s instructions Condensate drippage from such vents may accumulate on the ground below Consider traffic in the area to avoid hazard due to ice accumulation FO 73403 rT Pamm 5 Do not apply to GWS 090E boilers GWS 090E boilers must be direct vented Figure 6 Direct exhaust vertical or sidewall venting 595E 1 3 ggK HT HT H H Follow vent manufacturer s instructions for proper installation of vent runs including slope and support Horizontal drain tee Follow vent manufacturer s instructions to install condensate drain line Sidewall termination Terminate only using tee sideways or vertical or down turned elbow shown as directed in this manual Downward sloped vent option Vent may be sloped down without a condensate drain tee provided vent manufacturer shows this option in their instructions and venting is installed per boiler manufacturer s and vent manufacturer s instructions ACAUTION Condensate drip from down sloped vents may accu mulate on the ground below Consider traffic in the area to avoid hazard due to ice accumulation Air intake elbow Install an elbow on the air intake fitting as shown in illustrations in this Venting Manual This will help prevent accidental blockage of the air intake Part Number 550 110 734 1108 GWS Gas Fired Water Boilers Venting Manual 6 D
16. et above public walkway boiler shutdown if boiler is sidewall vented This could result e 3 feet above any forced air intake within 10 feet in loss of heat to building causing freeze up 14 Vent must also terminate 5 Locate or guard vent termination to prevent condensate from e atleast 6 feet away from adjacent walls damaging exterior surfaces e no closer than 5 feet below roof overhang 6 Locate the vent termination well away from trees shrubs and e atleast 4 feet horizontally and in no case above or below unless decorative items a 4 foot horizontal distance is maintained from electric meters 7 Locate or guard vent to prevent accidental contact by people 1 PIA Nelle VANGS ANG PNE SANIPMEN or pets 15 Site conditions may dictate greater clearances 8 Do not terminate vent in window well stairwell alcove court 16 Direct exhaust and Direct vent sidewall Do not extend ex yard or other recessed areas posed vent pipe outside of building Condensate could freeze 9 Do not wrap or insulate vent pipe or fittings and block vent pipe 10 Direct exhaust and Direct vent sidewall Do not terminate vent above any door or window Condensate can freeze causing ice formations 11 Do not connect A gas vent extending through an exterior wall shall not terminate adjacent to the wall or below building extensions such AWARNING J as eaves overhangs balconies or decks Failure to comply could result in severe personal injury
17. his manual See Figure 1 items 1 and 2 Install an elbow on the air intake fitting as shown in illustrations in this Venting Manual This will help prevent accidental blockage of the air intake Do not apply to GWS 090E boilers GWS 090E boilers must be direct vented Figure 1 Venting methods To prevent potential of severe personal injury or death check for areas and products listed in Table 1 page 3 before in stalling boiler If found either remove products permanently or provide outside combustion air direct vent installation Direct venting Combustion air is provided by air piping connecting from the boiler air intake fitting to the outside You must direct vent the boiler pipe outside air to boiler air intake fitting if the boiler area may contain contaminants as described in this manual Two direct vent options are permitted 1 Direct vent sidewall using Vent Air Intake Termination Kit See instructions in this venting manual Termination kit is included with GWS or GWS 090E boiler See Figure 1 item 3 2 Direct vent vertical using Through Roof or Through Unused Chimney Termina tion Kit See Figure 1 item 4 AWARNING All GWS 090E boilers must be direct vented not direct exhaust 1 Direct exhaust vent vertical route 3 Direct vent sidewall route vent pipe through vent pipe through roof or unused chimney DO NOT use for GWS 090E boilers sidewall terminated with sidewall direct ve
18. injury or death 2 Use suitable 3 material for combustion air connector piping such as e Dryer vent e Galvanized steel e PVC 3 I D Direct exhaust and Direct vent sidewall 1 Select vent method based on page 2 and installation require ments 2 Refer to Table 2 for maximum vent run lengths and number of elbows Do not exceed data in Table 2 3 Select vent components from separate GWI and GWS Vent Component Supplement All components including the vent starter must be of the same vent manufacturer Do not mix componenis Table 2 Direct exhaust and sidewall direct vent maximum vent length Maximum vent length Total number of elbows Notes 1 3 feet 1 2 3 4 5 6 GWS 063 095 amp 48 41 34 27 20 GWS 090E GWS 127 amp GWS 158 45 38 31 24 17 10 Notes 1 Do not include termination fitting when counting total number of elbows 2 One 1 90 elbow equals two 2 45 elbows 3 GWs 090E can only be direct vented Part Number 550 110 734 1108 GWS Gas Fired Water Boilers Venting Manual 3 Obtain vent system components continued Direct vent vertical 1 The Through Roof or Through Unused Chimney Termina tion Kit part number 382 200 436WT provides special parts required to route 3 inch stainless vent pipe through 5 inch B vent The space between the vents provides the passage for combustion air See Figure 3 for parts included with the kit 2 Verify that the vent termination will comply
19. irect exhaust Vertical and sidewall venting cori Do not apply to GWS 090E boilers GWS 090E boilers must be direct vented Figure 7 Direct exhaust sidewall venting termination Termination elbow or tee Elbow and termination coupling with screen l m o gt 5 dp I Termination elbow or tee Elbow and termination coupling with screen 1 S C Sealant L Termination elbow or tee Termination coupling not available dA T ag hel p Elbow and termination coupling with screen gt Pipe section D 0 lt O i D y I Part Number 550 110 734 1108 9 GWS Gas Fired Water Boilers Venting Manual 7 Direct vent Sidewall venting Installation guidelines 1 Install vent and air piping in accordance with the GWS or GWS 090E Boiler Manual this Venting Manual and with all applicable national state provincial and local codes In Canada see B149 1 or B149 2 Installation Code 2 Do not mix types or manufacturers of vent materials 3 Clean all joints before sealing See vent pipe manufacturer s instructions for cleaning and sealing joints Use their specified sealant Do not use screws 4 Install vent pipe with seams on top of vent horizontal runs Follow requirements on page 7 for vent termination 5 Maintain minimum 2 clearance from combustible materials to vent pipe Exception PVC air pipe can be no closer than
20. l piping to install condensate drain tee Vertical venting multiple GWS boilers 1 Multiple GWS boilers may be vented with vent terminations at the same height Space terminations to provide a minimum of 1 foot between pipes for U S installations For Canadian instal lations provide clearances required by B149 1 and B149 2 Installation Code Refer to Figure 10 on page 11 Part Number 550 110 734 1108 GWS Gas Fired Water Boilers Venting Manual 8 Direct vent Vertical venting continued Example verification Figure 11 Figure 11 Typical vent air piping Step 1 Vent air piping required per plan As an example consider an installation of a GWS 127 boiler where the boiler and vent air locations would require Boiler model GWS 127 K B vent length L 20 feet Vent connector piping reguires 2 elbows Vent connector piping length D C 16 feet Air connector piping reguires 1 elbow Air connector piping length B A 17 feet Step 2 Verify vent piping e Enter Table 5 at the row for B vent length of 20 feet e Move to the 2 elbow column e Read a maximum connector pipe length of 18 feet 3 Conclusion Vent piping is within limits because vent connector piping would only v be 16 feet less than the maximum of 18 feet E gt Step 3 Verify air piping e Enter Table 5 at the row for B vent length of 20 feet L e Move to the 1 elbow column e Read a maximum connector pipe length of 25 feet
21. nt fitting and termination coupling For all GWS and GWS 090E boilers 2 Direct exhaust vent sidewall route 4 Direct vent vertical route vent pipe through roof vent pipe through sidewall terminated with elbow or tee DO NOT use for GWS 090E boilers n Elbow on air inlet Air inlet fitting Direct exhaust venting 73405 inside air for combustion Do not apply direct exhaust to GWS 090E boilers GWS 090E boilers must be direct vented inside B vent or unused chimney combustion air piped through B vent or unused chimney For all GWS and GWS 090E boilers or pipe Air pipe Vent 3 4 Elbow on gt EN air inlet D Air inlet 4 l fitting A ME p N Direct vent venting outside air for combustion Part Number 550 110 734 1108 GWS Gas Fired Water Boilers Venting Manual 2 Combustion air supply Please review the following information on potential combustion air contamination problems Refer to Table 1 for products and areas that may cause contaminated combustion air These contaminants may cause damage to the vent piping and must be eliminated from the boiler combustion air supply You may do this by removing the contaminants permanently from the area or piping air directly to the boiler direct vent using one of the methods described in this manual If the boiler is installed in any area likely to cause contamination or if products which would contaminate the air cannot be rem
22. oved you must pipe combustion air to the boiler air intake Contaminated combustion air will damage the boiler resulting in possible severe personal injury death or substantial property damage Do not install a GWS boiler in a laundry room or pool facility for example without using ducted outside air These areas will always contain contaminants Table 1 Corrosive contaminants Refrigerant leaks Hydrochloric acid muriatic acid Cements and glues Antistatic fabric softeners used in clothes dryers Sodium chloride used for water softening Chlorine type bleaches detergents and cleaning solvents found in household laundry rooms Paint or varnish removers Adhesives used to fasten building products and other similar products Part Number 550 110 734 1108 3 GWS Gas Fired Water Boilers Venting Manual 3 Obtain vent system components Vent and air components 1 The following special gas vent systems comply with UL 1738 and ULC S636 standards and are certified by CSA as the only systems suitable for use with GWS and GWS 090E boilers Use only 3 vent piping from following e Heat Fab Inc Saf T Vent e Flex L International Inc StaR 34 e Z Flex Inc Z Vent II e ProTech Systems FasNSeal A WARNING Use only the vent starter of the same manufacturer as the vent components Do not mix components from different systems The vent system could fail causing flue gas spillage resulting in severe per sonal
23. r chimneys may only be used as raceways for routing vent or vent air piping as described in this Venting Manual This Venting Manual must only be used by a qualified installer service technician Read these instructions completely before beginning the installation Failure to follow all instructions in proper order can cause severe personal injury death or substantial property damage To install a new vent system follow instructions in e This Venting Manual e GWS or GWS 090E Boiler Manual e Vent pipe manufacturer s instructions supplied with vent material DO NOT apply direct exhaust venting for GWS 090E boilers These boilers must only be installed as direct vent Contents Page 1 Determine venting Method cccccceceeeseeeeeeeeeeeeees 2 2 Combustion air SUDDIY lt scecescesevesscarccdyaccstexdeceseeeceerness 3 3 Obtain vent system COMPONENS cccceeeeeeeee ees 4 4 Install vent SLANG ri sncensaaesseiecimetencensdaenamacseeaasaeteuncesied 6 5 VOI termination scesacsccecsiaesscnenecsers Sresnaeesastusantscaeniseens v 6 Direct exhaust Vertical and sidewall venting 8 7 Direct vent Sidewall venting oussinnnn 10 8 Direct vent Vertical venting ccceeeeeeeeseeeeees 12 INSTALLER Read all instructions before installing Follow all instructions in proper order to prevent personal injury or death Boiler must be vented and supplied with combus tion air as
24. t be straight no elbows e Construct vent joints per vent manufacturer s instructions includ ing use of their specified sealant Vent pipe routed inside B vent must also be fitted with vent clamps with elastomer grippers installed per Installation Assembly pages 14 and 15 of this manual e Use only one of the approved vent systems listed in Table 2 page 4 Do not mix types of vent material CSA certification will be void 5 Install boiler per GWS or GWS 090E Boiler Manual Verify vent system length The vent or air piping must be no longer than the maximum value given in Tables 4 and 5 Note in the tables that the maximum length of connector piping vent or air piping between boiler and B vent tee connection depends on the number of elbows and the length of the B vent section The reason is each 90 degree vent or air pipe elbow cause the same pressure drop as 7 feet of straight pipe 12 Vent air piping length verification procedure Step 1 Determine dimensions of vent air pipe needed for planned location Measure or calculate the vent air pipe lengths required for the planned location of the boiler and floor roof penetrations See Figure 11 for a typical layout e How long will the vertical B vent section have to be Round up to the nearest 5 feet for example if B vent length needs to be 12 feet round this amount up to the nearest 5 feet use 15 feet for your B vent length This is dimension L in
25. t mix components from different vent manufacturers causing flue gas spillage resulting in severe per b Maintain minimum 2 clearance from combustible materials to sonal injury or death vent pipe Exception PVC air pipe can be no closer than 3 6 from the vent pipe as dictated by the dimensions of the vent termination c Seal with sealant specified by vent pipe manufacturer using 34 1 Select a vent pipe manufacturer and obtain all vent compo nents needed based on boiler location and venting method 2 You must use the vent starter made by the vent pipe manu bead not requi TM quired for FasNSeal facturer See GWI and GWS Vent Component Supplement d Tighten strap at band clamp screw until strap is snug around for part number of each component listed by vent manufac blower housing turer 3 Follow all applicable national state local or provincial codes when venting the GWS boiler Figure 4 Vent starters FasNSeal vent starter Band clamp Z Vent Il vent starter Tighten screw L position FasNSeal starter Feed position Z Vent Il Sa saak Band clamp starter OF screw Band clamp Band clamp strap screw 3 8 Bead of sealant Blower 10 outlet Blower housing outlet StaR 34 vent starter Saf T Vent vent starter Saf T Vent StaR 34 starter starter Band clam Band clamp strap p enk clamp Band clamp lt gt screw meL 3 8 Bead of 3 8 Bead sealant of sealant Blower ho
26. un to vent starter at boiler See page 11 for air piping instructions Termination mounted horizontally Horizontal drain tee follow bei vent pipe manufacturer s instructions to install condensate f drain line i Condensate drain line use only silicone Part Number 550 110 734 1108 GWS Gas Fired Water Boilers Venting Manual 7 Direct vent Sidewall venting continued Sidewall direct vented vent pipe must terminate with coupling as shown in Figure 9 Failure to do so could result in flue gas recirculation with the potential of severe personal injury or death If you remove the air piping from an existing direct vented installation to change to direct exhaust venting you must replace the termination coupling with a down turned termination elbow with screen or a termination tee with screen as shown in Figure 6 page 8 and Figure 7 page 9 Failure to do so could result in nuisance outages and loss of heat with potential substantial property damage Figure 9 Termination assembly 14 to 34 space between stop Screw on termination and metal plate Saf T Vent termination slip connector and termination coupling 4 galvanized sleeve by others required for combustible material Aluminum inside plate See insets for other vent systems Do not seal vent pipe to inside Vent pipe _ i or outside plates wall or vent He N o termination cap Termination cap s
27. upplied with boiler JS Combustion air pipe Spacers to support sleeve on vent S 2 required in kit Screw and lock washer NU JAL E A Stainless steel outside plate Screw 73414 87101 87102 187103 FasNSeal termination pipe section amp termination coupling Install combustion air piping 1 Seal all combustion air piping joints and seams using sealant as below a Dryer vent A piece of 3 galvanized is required at each end to adapt Seal all pipe joints and seams between pipe and dryer vent with approved silicone sealant see NOTICE below b Galvanized pipe Seal all joints and seams using approved silicone sealant see NOTICE below PVC pipe Seal all joints using PVC cement C NOTICE Except where noted otherwise above seal air piping using either the sealant specified by the vent pipe manufacturer for vent joints or one of the following silicone sealants e Dow Corning 700 or 732 e General Electric 108 or 800 Support the air piping in the same manner as speci fied for the vent pipe by the vent pipe manufacturer Do not support the air pipe from the sidewall termi nation Part Number 550 110 734 1108 StaR 34 termination pipe section amp termination coupling Z Vent II termination pipe section locking band amp termination coupling Sidewall venting multiple GWS boilers Do not connect multiple boilers to the same vent Failure to comply could result in sever
28. using outlet Blower housing outlet 73410 6 Part Number 550 110 734 1108 GWS Gas Fired Water Boilers Venting Manual 5 Vent termination AWARNING Follow instructions on this page when determining vent location to avoid possibility of severe personal injury death or substantial property damage 1 Locate the boiler and vent penetration through the wall Direct e Any other appliance to vent pipe exhaust and Direct vent sidewall or roof Direct vent vertical e Multiple boilers to a common vent pipe so all requirements on this page and in Figure 5 willbe met 12 Canadian installations See B149 1 or B149 2 Installation Also follow vent manufacturer s instructions Code Terminate vent no less than 6 feet from another com 2 Gases will form white plume in winter Plume could obstruct bustion air inlet 3 feet from any other building opening and window view of nearby windows in multistory buildings 3 feet from any gas service regulator 3 Prevailing winds could cause freezing of condensate and 13 See Figure 5 showing that the vent must terminate water ice buildup on vent termination building plants or roof e more than 1 foot Direct vent or 4 feet Direct exhaust below or Ice buildup on vent termination can cause boiler shutdown to side of all doors or windows and building freeze up e more than 1 foot above grade or anticipated snow line 4 Direct exhaust Winds over 31 mph can cause nuisance e at least 7 fe

GWS - Venting - Williamson

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