Flex Vent Installation - Vermont Castings VWDV70NTSCSB Installation And Operating Instructions Manual

Direct vent gas fireplace

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Installation and operating instructions manual (59 pages)

Table Of Contents

Table of Contents

VWDV70 Series Gas Fireplace

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

ﬂ exible venting. Flex kits may not be modiﬁ ed. Flex

kits may be added to the end of a vent run made of rigid

vent sections using pipe manufacturer's approved ﬂ ex

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 ﬂ ex adapter starter kit (DVFF8A/8) is used to attach

ﬂ ex venting to the appliance starting collar. It includes

5" inner and 8" outer adapter rings. Figure 30

•

The inner and outer adapter rings are required to

start all ﬂ ex runs.

•

Never install damaged or torn ﬂ exible venting.

•

Over tightening clamps may rip, tear, or otherwise

damage ﬂ exible venting.

•

The adapter kit does not include individual pipe sec-

tions which may be purchased separately. (UL1777

listed type venting only.)

3. Start the ﬂ exible vent as follows:

A. Installing the inner ﬂ ex adapter and pipe. Figure 30

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 ﬂ exible

vent pipe, and push out of the way.

3. Pull and extend the inner ﬂ exible vent.

4. Slide the inner vent onto the adapter collar, for a

minimum 1

⁄

" overlap.

5. Locate the clamp at approximately

ﬂ ex 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 ﬂ ex pipe. Figure 30

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 ﬂ exible

vent pipe, and push out of the way.

3. Pull and extend the outer ﬂ exible vent.

4. Slide the outer vent onto the appliance collar outer

adapter for a minimum 1

Flex vent pipe spacers: Refer to

manufacturer's speciﬁ cations for correct

positioning of the spacer springs to

maintain proper distance between inside

and outside pipe.

⁄

" from the

⁄

overlap.