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Installation Procedure

 

  

Z-FLEX

 

 

COAXIAL VERTICAL EXTREME WEATHER TERMINATION

 

a.

 

Apply a heavy bead approximately 1/4" wide of high temperature Mill-Pac Black 

sealant to approximately 3/4" from bottom end of vertical termination inner collar 

outside edge and slip flexible pipe over inner collar with as much overlap as 

possible.  Secure flexible pipe to inner collar with four self-drilling screws evenly 

spaced 90 degrees apart.

 

b.

 

Slip vertical termination outer collar over rigid pipe or rigid pipe extension with as 

much overlap as possible.  Secure outer collar to rigid pipe with four self-drilling 

screws evenly spaced 90 degrees apart.

 

c.

 

Seal all external joints of rigid pipe and termination with silicone sealant.

 

d.

 

Apply a heavy bead approximately 1/4" wide of high temperature Mill-Pac Black 

sealant to approximately 3/4" from bottom end of rigid pipe outside edge located 

below roof and slip outer flexible pipe over rigid pipe with as much overlap as 

possible. Secure flexible pipe to rigid pipe with four self-drilling screws evenly 

spaced 90 degrees apart.

 

 

Coaxial 
Vertical 
Extreme 
Weather 
Termination

 

 

 

 

Secure with Screws: 

Outer Collar to 

Rigid Pipe or Rigid 

Pipe Extension

 

Apply Mill-Pac 

Black Sealant & 

Secure with Screws

:

 

Inner Collar to 

Flexible Pipe

 

 
 

 

Fig. 15  Vertical Termination Installation

 

 

BEST PRACTICE

 

It is recommended to spray paint flashing, rigid coaxial pipe and termination to 

match color of roof shingles to extend life and improve appearance of assembly. 

Clean, prime and paint with appropriate materials.

 

 

 

 

 

21

 

Summary of Contents for Z-Flex DVK-HR

Page 1: ...xial Flexible Vent Coaxial Flexible Spacers Coaxial Flexible Supports High Temperature Mill Pac Black Sealant Self drilling Screws MODEL DVK VX Coaxial Flexible Direct Vent Kit with Coaxial Vertical Extreme Weather Termination Kit Includes Coaxial Vertical Extreme Weather Termination Rigid Pipe Storm Collar Support Roof Flashing 0 30 Degree Roof Termination Support Coaxial Flexible Vent Coaxial Fl...

Page 2: ...understand and follow all instructions and appropriate local codes when installing using or maintaining any fuel burning appliance and vent system Install carbon monoxide detector and alarms in accordance with local codes DO NOT install or attempt to repair damaged torn crushed or punctured flexible vent To ensure proper operation of venting system do not make any alterations modifications or use ...

Page 3: ... fireplaces and inserts tested and third party listed CSA ETL OMNI PFS UL or Warnock Hersey to appropriate ANSI Z21 standard s for use with coaxial concentric flexible aluminum vent WARNINGS Risk of Fire Risk of Explosion Risk of Asphyxiation Do not allow flexible pipes to bunch up keep flexible pipes pulled tight Do not bend coaxial flexible vent more than 90 degrees Coaxial flexible vent kits co...

Page 4: ... bends and use 45 degree bends instead of 90 degree bends whenever possible for optimum performance 3 Determine placement of coaxial termination vertical or horizontal ensuring location meets all clearance requirements in appliance manufacturer s installation instructions local codes and national codes is not easily blocked or obstructed and meets appliance manufacturer s allowable vent configurat...

Page 5: ...s 20 feet of coaxial flexible vent coaxial flexible coupling coaxial flexible spacers coaxial flexible supports Mill Pac Black sealant and screws b ONLY IF NECESSARY a single coaxial flexible vent extension kit with coaxial flexible coupling is allowed to extend the length of coaxial flexible vent BEST PRACTICE Attach flexible extension kit to APPLIANCE COAXIAL COLLAR or DV TO COAXIAL FLEXIBLE ADA...

Page 6: ...e pipes to each end of coaxial flexible coupling outer collars with a heavy bead approximately 1 4 wide of high temperature Mill Pac Black sealant applied approximately 3 4 from end of each flexible coupling outer collar outside edge and evenly slip outer flexible pipes over flexible coupling outer collars with as much overlap as possible Secure outer flexible pipes to flexible coupling outer coll...

Page 7: ...closed flexible pipes are in a fully compressed form The stretching of the flexible pipes requires two people wearing gloves A flexible pipe should be stretched working half the length at a time Start by facing each other at the appropriate mid point in the flexible pipe Holding the flexible pipe firmly in your hands one person should walk backwards stretching portions of the pipe as they backup A...

Page 8: ...ched flexible pipe over inner flexible pipe with spacers exercising care not to dislodge any spacers c Additional coaxial flexible spacers part numbers 2DVK 35 36 46 47 57 58 68 710 811 S are sold separately in kits of 10 Use 2DVK58S for 4 5 7 5 coaxial diameters Install CoaxialFlexible Spacers Around Inner Flexible Pipe Rotate Each WIRE Spacer Turn From PreviousInstalled Spacer Slide Outer Flexib...

Page 9: ...venly spaced 90 degrees apart 5 Apply a heavy bead approximately 1 4 wide of high temperature Mill Pac Black sealant to approximately 3 4 from male end of appliance outer collar outside edge and slip outer flexible pipe over appliance outer collar with as much overlap as possible Secure outer flexible pipe to appliance outer collar with four self drilling screws evenly spaced 90 degrees apart Appl...

Page 10: ...s evenly spaced 90 degrees apart e On adaptor s flexible vent connection with inner and outer male collars apply a heavy bead approximately 1 4 wide of high temperature Mill Pac Black sealant to approximately 3 4 from male inner collar outside edge and slip inner flexible pipe over inner collar with as much overlap as possible Secure inner flexible pipe to inner collar with four self drilling scre...

Page 11: ... or according to appliance manufacturer s installation instructions to maintain appliance manufacturer s clearance to combustibles b Additional coaxial flexible supports part numbers 2DVK 05 06 07 07 5 08 10 11 SUP are sold separately in kits of 5 Secure Coaxial Flexible Supportto Building Using Field Supplied Hardware Coaxial FlexibleSupport Every 2 Feet Maximum for Horizontal Runs Every 3 Feet M...

Page 12: ...opic and accommodates wall thickness of 6 to 11 e Separate two halves of thimble and secure to wall with screws from both sides ensuring each end of thimble overlaps in middle telescopic f Seal around outer flexible pipe thimble and wall thimble with field supplied sealant If horizontal fire stop is necessary discuss sealant and assembly with fire stop professional and local building and fire offi...

Page 13: ...m male end of Horizontal Termination inner collar outside edge and slip inner flexible pipe over horizontal termination inner collar with as much overlap as possible Secure inner flexible pipe to inner collar with four self drilling screws evenly spaced 90 degrees apart Apply a heavy bead approximately 1 4 wide of high temperature Mill Pac Black sealant to approximately 3 4 from male end of Horizo...

Page 14: ...K HR Kits Wall Thimble Sold Separately Consult Appliance Manufacturer s Instructions OR Siding Standoff Sold Separately Consult Appliance Manufacturer s Instructions Horizontal Square Termination Includedin 2DVK HT Kits Fig 8 Wall Thimble Siding Standoff Horizontal Terminations ...

Page 15: ...xial flexible vent c Install fire stop on ceiling bottom side of ceiling or floor joists and secure with screws d Seal around outer flexible pipe fire stop and fire stop ceiling joists with field supplied fire stop sealant Discuss sealant and assembly with fire stop professional and local building and fire officials to ensure fire stop meets with local code requirements e Fire stops part numbers 2...

Page 16: ...ation shield ceiling joists with field supplied fire stop sealant Discuss sealant and assembly with fire stop professional and local building and fire officials to ensure fire stop meets with local code requirements g Cover top of fire stop insulation shield pipe with insulation collar included in kit slide insulation collar with flared end down over and down coaxial pipes until it is just above t...

Page 17: ...n roof support around outer rigid pipe and with provided 1 2 long screws ensuring pipe is vertically plumb and extends below roofline approximately 1 foot below lowest opening in roof or enough to facilitate connection to outer flexible pipe c Inner flue pipe provided in 2DVK VX kits are 48 longer than outer pipe and include 4 additional coaxial flexible spacers d Install spacers every foot on inn...

Page 18: ...shing plate rests on top of roof shingles f Seal roof flashing to roof with a suitable field supplied waterproof mastic g Secure roof flashing to roof using field supplied roofing nails and neoprene washers or suitable waterproof mastic to cover nail heads Fig 12 Roof Flashing Installation 19 20 Review appliance manufacturer s installation instructions and local codes to determine required install...

Page 19: ...ith four self drilling screws evenly spaced 90 degrees apart d Slip rigid extension pipe over rigid pipe with as much overlap as possible Secure rigid extension pipe to rigid pipe with four self drilling screws evenly spaced 90 degrees apart e Slide guy band support down rigid extension pipe to within 1 foot of vent termination and secure with 10 24 bolt and nut provided with guy band support f At...

Page 20: ...orm Collar Support to Rigid Pipe Just Above Roof Flashing Seal Between Both with Sealant Rigid Pipe Storm Collar Support Roof Flashing Fig 14 Storm Collar Support Installation WARNING Risk of Fire Risk of Explosion Risk of Asphyxiation High wind conditions nearby big trees adjoining roof lines steep pitched roofs may cause poor draft or down drafting In these cases increasing the installation heig...

Page 21: ...ints of rigid pipe and termination with silicone sealant d Apply a heavy bead approximately 1 4 wide of high temperature Mill Pac Black sealant to approximately 3 4 from bottom end of rigid pipe outside edge located below roof and slip outer flexible pipe over rigid pipe with as much overlap as possible Secure flexible pipe to rigid pipe with four self drilling screws evenly spaced 90 degrees apar...

Page 22: ...for any reason a qualified service technician or agency must follow these or appliance manufacturer s installation instructions for proper reassembly and sealing of vent system Additional Mill Pac Black sealant part number 2DVKS is sold separately Check appliance manufacturer s instructions for any additional maintenance instructions and if any particular precautions should be taken Save these ins...

Page 23: ...s Siding Standoff Not Shown Sold Separately Consult Appliance Manufacturer s Instructions Fig 16 Coaxial Flexible Direct Vent Kit with Horizontal Round Termination 2DVK VX KITS Fig 17 Coaxial Flexible Direct Vent Kit with Vertical Extreme Weather Termination ...

Page 24: ...24 Warranty Z FLEX Details subject to change without notice OINS2DVK Rev 07 2O20 ...

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