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Installation Instructions

PolyPro Double-Wall Flex 
Gas Vent System for Category II & 
IV Gas-Burning Appliances

Summary of Contents for PolyPro Flex Series

Page 1: ...PolyPro Flex Installation Instructions PolyPro Double Wall Flex Gas Vent System for Category II IV Gas Burning Appliances ...

Page 2: ...ompletion of assembly This venting system must be free to expand and contract under normal operation WARNING Risk of carbon monoxide poisoning or fire due to joint separation or pipe breakage Keep these instructions for future reference PolyPro is one of DuraVent s line of products Indicates a condition or hazard which will or can cause minor personal injury or property damage CAUTION IMPORTANT Th...

Page 3: ...up to date installation instructions see www duravent com PolyPro Flex CONTENTS APPLICATION 4 MINIMUM CLEARANCE TO COMBUSTIBLES 4 GENERAL INSTRUCTION NOTES 4 INSTALLATION OF FLEX GASKET 5 MASONRY SHEET ROCK ENCLOSURE 6 B VENT RELINE 9 WARRANTY 12 ...

Page 4: ...ance with local code requirements and appropriate National Codes In the US NFPA 54 ANSI Z223 1 National Fuel Gas Code or the International Fuel Gas Code In Canada CAN CGA B149 1 Natural Gas Installation Code or CAN CGA 149 2 Propane Installation Code Table A Minimum Clearance To Combustibles Table VENT ORIENTATION CLEARANCE Horizontal SingleWall 0 for flue temperatures up to 194 F 90 C 1 4 6mm for...

Page 5: ...llation instructions closely in regards to condensate management INSTALLATION OF FLEX GASKET PP Flex pipe must always have gaskets installed on both ends of any installation Gaskets are installed on the flex pipe with the gasket seating inside the flex pipe grooves Fig 1 Use soapy water to assist installation 1 Cut PP flex pipe knife saw etc to desired length Special care should be taken to ensure...

Page 6: ...11 10 7 9 8 7 5 4 3 2 1 Wall Plate 2 Support Elbow 3 Flex Chimney Support 4 Flex Male Adapter 5 Clamp or Tie 6 Flex Coupler 7 Gasket 8 Flex Liner 9 Spacer 10 Support Bracket 11 Flex Female Adapter 12 Flex Chimney Cap Flashing 13 Termination Pipe FLEX PULLER A flex puller is an optional component available to help ease installation of PP Flex through enclosures Fig 3 The 2 60mm version is of differ...

Page 7: ...e 5 Installation Support Elbow Figure 6 Securing Support Elbow 1 2 3 1 3 The length of the flexible liner can be determined in two ways use a rope with a weight to measure the shaft length add 16 40cm extra length for each bend The flexible liner can be shortened with a saw or scissors by cutting in a groove The correct length can also be determined after installing the liner in the shaft and cutt...

Page 8: ... Female Adapter on the liner and close the latching tabs Allow the assembly to rest on the Support Bracket 14 Seal the edge of the chimney shaft with water resistant sealant see 1 Fig 9 and push the Flex Chimney Flashing see 2 Fig 9 on the shaft and fix it with four masonry anchors see 3 Fig 9 15 Install the Termination Pipe see 1 Fig 10 Assemble the storm collar portion of the Flex Chimney Flashi...

Page 9: ...ns in previous pages 5 Lower the B Vent Adapter Upper onto the top of the existing B Vent and secure using screws x3 supplied with the hardware kit 6 Attach the Termination Top to the Termination Cap clicks when engaged then insert the Flex Female Adapter into the Termination Cap Push the assembly onto the Termination Base clicks when engaged see Fig 12 7 Push the completed assembly down onto the ...

Page 10: ...o Termination Cap clicks Then connect Termination Insert to Termination Transition click 8 Line up inner pipe connections and push termination assembly down onto B Vent Adapter Upper and secure with screws x3 provided 9 Cut Flex to length 3 below the bottom of the B Vent 10 Install Flex Gasket and Flex Male Adapter on Flex 11 Install B Vent Adapter Lower Flex Male Adapter should protrude beyond pe...

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Page 12: ...y This warranty provides no cash surrender value The terms and conditions of this warranty may not be modified altered or waived by any action inaction or representation whether oral or in writing except upon the express written authority of an executive officer of DuraVent This product is intended for venting only category IV appliances burning Natural Gas Propane and Oil All other fuels are not ...

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