FLEX VENTING INSTALLATION | HDV Series Direct Vent Gas Fireplace |
| When using a 1222DA reducer, 5" x 8" to 4" | |
NOTE | x 6B\,", the flex adapter starter kit DVFA/8 is | |
used to start the 4" x 6B\," flex venting at the | ||
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| adapter. All restrictions and allowances that | |
| pertain to 5" x 8" flex venting apply to 4" x 6B\," | |
| flex venting. | |
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| Flex vent pipe spacers: Refer to | |
NOTE | manufacturer’s specifications for correct | |
positioning of the spacer springs to | ||
maintain proper distance between inside | ||
| and outside pipe. | |
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1.Flexible UL1777 listed venting may be used in any venting application where rigid direct vent components can be used. All restrictions, clearances and allow- ances that pertain to the rigid piping apply to the flexible venting. Flex kits may not be modified. Flex kits may be added to the end of a vent run made of rigid vent sections using pipe manufacturer's approved flex to pipe adapters. This may occur only if doing so does not violate any of the venting length, height, routing, horizontal to vertical ratio requirements or clearance considerations detailed in this manual.
2.The flex adapter starter kit (DVFF8A/8) is used to attach flex venting to the appliance starting collar. It includes 5" inner and 8" outer adapter rings. Figure 36
UL1777
Flex Vent
1C\v" Flex- |
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ible Pipe |
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and Adapter | Screws | |
Outer | ||
(3 places, | ||
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| equidistant | |
DVFA/8 | just above | |
gear clamp) | ||
Inner Adapter | ||
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Outer Adapter |
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Appliance
Starting
Collar
Figure 36 -
Typical Appliance Connection
UL1777
Flex Vent
5° Radius
FP1973
Figure 37 -
Minimum Radius for Flex Vent Section
•The inner and outer adapter rings are required to start all flex runs.
•Never install damaged or torn flexible venting.
•Over tightening clamps may rip, tear, or otherwise damage flexible venting.
•The adapter kit does not include individual pipe sec- tions which may be purchased separately. (UL1777 listed type venting only.)
3.Start the flexible vent as follows:
A. Installing the inner flex adapter and pipe. Figure 38
1.Insert the long side of the 5" inner ring into exhaust pipe, gently tap to seat into place, and secure with screws.
2.Slide the small gear clamp over the inner flexible vent pipe, and push out of the way.
3.Pull and extend the inner flexible vent.
4.Slide the inner vent onto the adapter collar, for a minimum 1C\v" overlap.
5.Locate the clamp at approximately 3/4" from the flex end and tighten.
6.Secure the clamped inner section with three self- tapping screws, drilled equidistant, just above the clamp perimeter.
B.Installing the outer flex pipe. Figure 36
1.Firmly insert the 8" outer adapter ring into the outer appliance starting collar and secure with screws.
2.Slide the large gear clamp over the outer flexible vent pipe, and push out of the way.
3.Pull and extend the outer flexible vent.
4.Slide the outer vent onto the appliance collar outer adapter for a minimum 1C\v" overlap.
5.Locate the clamp at approximately 3/4" from the flex end and tighten.
6.Secure the clamped outer section with three self- tapping screws, drilled equidistant, just above the clamp perimeter.
C.Routing UL1777 flex pipe.
1.Always maintain the required clearance when routing the flex vent assembly.
56D3048 | 25 |
