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DuraSeal FLEX FOR SS ONLY

*IMPORTANT NOTE

When installing DuraSeal Flex, the direction of exhaust flow is always

from the appliance. There is an arrow printed on each section of liner and

component that will point in the direction of the exhaust gas. If the inner

liner is installed correctly the proper direction can be determined by running

your fingernails up the inside wall of the liner. If the direction is correct, your

na ils will catch at the seams of the inner wall. If it is incorrect, your nails will

slide smoothly across the inner surface.

Description of the DuraFlex adapters

I- The male adapter is used to connect a rigid duct to a flexible liner. It

has latches and a Vi ton  Black 0-ring 

(Figure 13)

. It is installed at the bottom 

of the flexible length.

Figure 13 - DuraSeal Male adapter

Note: When installed as a liner in a masonry chimney or to reline an existing vent no 

other appliance can be vented into the same chimney or vent.

Elbow or tee

Guy support 

(GS)

Centering 

band (CB)

Stainless steel 

wire rope *

(by other)

Combustible 

wall

Masonry 

chimney

1” Minimum

Exit cone (EC)

Maximum distance 

between guides 

See table 6 (MVS)

Maximum 

distance 

between sup-

ports 

See table 

4

 

& 5

Maximum distance 

between guides 

See table 6 (MVS)

INSTALLING DuraSeal® AS A LINER IN A MASONRY CHIMNEY OR 

AS A LINER IN AN EXISTING VENT (DS - DSD - DSID only)

* Stainless Steel Wire Rope (by others) is to be used to hang the vent system 

from the top of the masonry chimney or from the top of the existing vent.

-  The stainless wire rope is attached to the Guy Support Band and is secured 

with cable clamps (by others).  

-  The Stainless Steel Wire Rope is secured in a similar manner to the top 

platform of the masonry chimney or existing vent.  

-  Use the appropriate size of Stainless Steel Wire Rope to accommodate the 

required total loads of the vent system.

It  may be  necessary to fabricate a platform (at top of chimney/ vent - by others).  

Consult DuraVent for guidelines.

DO NOT USE GALVANIZED WIRE ROPE.

Figure 12 -Installing DuraSeal as a liner

Storm Collar (SC)

Flat Flashing (F)

Summary of Contents for DuraSeal DS

Page 1: ...g damage prior to installation B Proper joint assembly is essential for a safe installation Follow these instruc tions exactly as written Check severeness of joints upon completion of assembly C This...

Page 2: ...ory I II III and IV in USA UL 1738 or in Canada asType BH GasVenting as noted in ULC S636 with a maximum operating temperature of 480 F 250 C and a maximum rated positive pressure of 35 water column I...

Page 3: ...y do not overheat at points of contact Notes 1 Unenclosedrequiresatleasttwosidesopen 2 SingleWall DS DSLS maybeenclosedonlyinnon combustibleenclosure 3 Reducedclearancesmaybeattainedbyusingnon combust...

Page 4: ...bing or electrical systems Maintain rated clearances to combustibles over the entire length of the vent system DuraSeal shall not be routed into through or within any vent such as an existing masonry...

Page 5: ...25 70 6 90 90 90 45 90 45 65 7 87 5 87 5 87 5 43 75 87 5 43 75 55 8 85 85 85 42 5 85 42 5 50 9 N A N A N A N A N A N A N A 10 80 80 85 42 5 85 42 5 40 12 75 75 75 37 5 75 37 5 30 14 70 70 70 35 70 35...

Page 6: ...etween Guides Supports MDE Maximum Distance between Elbows H Maximum Freestanding Height above the Roof S Maximum Suspended Length SUPPORTANDGUIDESPACINGFORMODELDS DSLS Inside diameter MVS MHS MDE H S...

Page 7: ...ance manufacturer are permitted 4 Thetotalcontinuousdistanceoftheventsystemfromtheapplianceflue collartotheterminationshallnotexceedthatspecifiedintheappliance manufacturer sinstallationinstructions W...

Page 8: ...himble WTI OPENING DIMENSIONS FORWALL ROOF PENETRATION FOR MODEL DSID Inside Diameter WallThimble WT Wall Thimble Insulated WTI Roof Thimble RT Roof Thimble Insulated RTI 3 10x10 11x11 7x7 11x11 4 13...

Page 9: ...appliance 1 ADrainlength DL oraTeewithadrainteecap DTC isstronglyrecom mended Installthisdrainascloseaspossibletotheappliancefluecollar 2 A condensate drain is required for every 30 feet of horizontal...

Page 10: ...t SeeTable 7 8 MHS 30 Termination STA Opening dimension SeeTable 9 10 11 WallThimble WT WTI Roof Support RS Suspension Band SB Anchor Plate HD APHD Appliance Maximum distance suspended SeeTable7 8 S F...

Page 11: ...TI Maximum distance between guides SeeTable 7 8 MVS Opening dimension SeeTable 9 10 11 Minimum Clearance SeeTable 1 Maximum distance between supports SeeTable 3 4 5 6 Maximum distance between elbows w...

Page 12: ...oz 3 0 1 4 0 1 5 0 1 6 0 1 7 0 1 8 0 2 9 0 2 10 0 2 12 0 3 14 0 3 16 0 3 18 0 4 20 0 4 22 0 5 24 0 5 Table 12 Figure 9 Position of Support Important Notes DS DSD DSID ONLY 1 For Anchor Plate AP Anchor...

Page 13: ...should be used NOTE The adjustable length is a non load bearing part A support must be used after it to take the load of the sections above NOTE The inner conduit may be cut to desired length to limi...

Page 14: ...o the same chimney or vent Elbow or tee Guy support GS Centering band CB Stainless steel wire rope by other Combustible wall Masonry chimney 1 Minimum Exit cone EC Maximum distance between guides See...

Page 15: ...he Flex Flex adapter with the flexible liner 1 Before official installation 1 1 If cutting the liner on the field is required make sure the cut is square Make a marker line on both ends of the liner a...

Page 16: ...FlexVi ton caulking 2 2 Push the adapter on the liner all the way in until you can t seethe mark made on the flexible liner earlier Figure 19 Make sure that theViton caulking is sealed well at the joi...

Page 17: ...ofViton caulking at 1 2 from the edge of the flexible liner all around the inner side of it Figure 22 Figure 22 DuraSeal FlexViton caulking 3 3 Push the adapter on the liner all the way in until you...

Page 18: ...ed 2 Make sure the DuraSeal Flex is supported at the bottom of the chimney Refer to Figure 12 forguiding and support installation in the masonry chimney 3 The DuraSeal Flex liner must be installed fro...

Page 19: ...19 SECTION C SPECIFIC INFORMATION MODELS DSLS DSLD 26 TO 36 TYPICAL INSTALLATION FOR DSLS DSLD Figure 26 Typical installation for DSLD...

Page 20: ...the value In theTable 7 8 use bracing or cable guying to staballze chimney section above the roof See Figure 27 Figure 27 Height with rigid bracing or guying option for DSLS DSLD Figure 28 Maximum fre...

Page 21: ...lation add a bead of blackViton caulking over the Viton O ring NOTE Sealant Caulking is supplied by DuraVent and Individual tubes are marked Fluorodyn Caulk VITON code VITON S 2 5 oZ VITON L 11 oZ It...

Page 22: ...to the inside of the inner flue adjacent to the nipple to channel the effluent to the drain 3 The duct drain is intended for use at the end of a horizontal run where access and drainage is needed see...

Page 23: ...ged end of the tube should always point downward or towards downward slope Figure 33 Overlap Details forVariable Length INSTALLATION STEPS FORTHEVARIABLE LENGTH LV DSLS DSLD Step 1 Measure the distanc...

Page 24: ...regular length installation See JOINT ASSEMBLY section Step 8 Apply thin layer of sealant inside the retaining collar and also a continuous bead of sealant at the collar overlap seam See Figure 37 Fig...

Page 25: ...lations and must be connected to a suitable disposable point It can also be used as an access for clean outs or access purposes See Figure 41 Same installation as aTee Cap TC ELBOWS DSLS DSLD ELBOWS E...

Page 26: ...by threaded rods or from small size angles or straps are usually not satisfactory to resist bending moments due to offsets Figure 44 Maximum Spacing between supports for Offset ADAPTERS DSLS DSLD TAPE...

Page 27: ...members are supplied by the installer See Figure 48a and 48b Figure 48a Ventilated Anchor Plate on a Framework Figure 48b Detail of theVentilated Anchor Plate on a Framework Supported duct sections in...

Page 28: ...the part doesn t have any outer wall but Outer Band BSE is provided to secure the insulation on the part See Figure 51 52 53 for the three steps to install the DSLD Figure 50 Ventilated Anchor Plate...

Page 29: ...of the flange band The Heavy DutyWall Support Assembly is bolted together with provided hardware It is made with adjustable struts which allows a variable clearance from the non combustible wall to t...

Page 30: ...hardware provided to form a rigid assembly NOTE Seal joint with S 375 sealant above and below support if exposed to weather FULL ANGLE RING FAR A Full Angle Ring is used as a guide to prevent the duc...

Page 31: ...n the vertical position The inlet and outlet ends must each be supported TEE SUPPORT TheTees must be supported properly to protect them from bending It can be done by means of Anchor Plate AP Anchor P...

Page 32: ...pitch 5 to 30 See Figure 64 Figure 62 Storm Collar Figure 63 Flashing Figure 64 Adjustable Flashing NOTE The flashings are non ventilated and does not provide for any reduced clearance to combustible...

Page 33: ...tem incorporates a drain hose from either a Drain length or a Drain tee cap the hose must be inspected periodically to ensure that water is in the trap loop If a proper trap loop is not maintained exh...

Page 34: ...07 14 17 DuraVent Limited reserves the right to make changes at any time without notice in design materials specifications prices Consult your local distributor for chimney system code information 10...

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