Venting Installation

Continued

Penetrating Roof

To maintain a 1" clearance to pipe on a roof with a pitch, a rectangular opening must be cut.

1.Determine the center point through which pipe will penetrate roof.

2.Determine center point of roof. Pitch is the distance the roof drops over a given span, usually 12". A 6/12 pitch means that the roof drops 6" for each 12" one measure horizontally down from roof rafters.

3.Use roof opening chart (Figure 22) to determine correct opening length and flashing required.

4.Remove shingles around opening mea- sured. Cut out this section.

5.Add next sections of pipe until end penetrates roof line. Check to see that proper clearances are maintained. Extend chimney by adding sections of double wall pipe until pipe is minimum of 30" above highest point of roof cutout. Termination and chimney must extend a minimum of 36" above highest point where it passes through the roof (see 10-Foot Rule and

Figure 20, page 9.

19" Min.

 

 

 

(48.26cm)

 

 

 

 

2" Min.

 

 

 

(5.08cm)

30" Min.

 

 

 

(76.2cm)

 

 

 

2" Min.

 

 

 

(5.08cm)

 

2" Min.

 

 

 

(5.08cm)

 

 

 

 

 

Opening

 

 

 

“A”

Pitch

Slope

Opening

Used Flashing

 

 

"A" Max.

Model No.

Flat

0°

19"

V6F-8DM

0-6/12

26.6°

23.25"

V6F-8DM

6/12-12/12

45°

30.75"

V12F-8DM

Figure 22 - Roof Opening Measurements

Flashing Installation

Determine flashing to be used with roof opening chart. Slide flashing over pipe until base is flat against roof. Replace as many shingles as needed to cover exposed area and flashing base. Secure in position by nailing through shingles (see Figure 23). DO NOT NAIL

THROUGH FLASHING CONE.

Storm

Overlap

Collar

Shingles Top

Flashing

and Sides Only

Cone

 

Nail Only

Outer

Perimeter

of Flashing

Underlap

Shingles

at Bottom

Figure 23 - Flashing Installation

Storm Collar Installation

Place storm collar over pipe and slide down until it is snug against the open edge of the flashing (see Figure 24). Apply waterproof caulking to all seams and notches around storm and also at base around shingles.

Chimney

Waterproof

Pipe

Caulk

Storm

Flashing

Collar

Figure 24 - Storm Collar

Terminations

The firebox system must be terminated with the listed round top or chase terminations. In any case, refer to the installation instructions supplied with the termination.

Terminations approved for this fireplace are VRTL-8DM and VRTTL-8DM, which can be used for flashing or chase and VETO-8DM and VETLO-8DM for chase style termination only. Figure 25, page 11, shows a VRTL-8DM round top termination.

CAUTION: Do not seal openings on rooftop flashing. Follow installationinstructionsprovided with termination being used.

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