Desa PN36-A Owners Manual And Installation Manual page 10

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 23) 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.
19" Min.
(48.26cm)
2" Min.
(5.08cm)
2" Min.
(5.08cm)
Pitch Slope
Flat 0°
0-6/12 26.6°
6/12-
56.3°
12/12
Figure 23 - Roof Opening Measurements
FLAShING INSTALLATION
Determine flashing to be used with roof open-
ing 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 24). DO NOT NAIL
ThROUGh FLAShING CONE.
10
2" Min.
(5.08cm)
Opening
"A"
Opening Used Flashing
"A" Max. Model No.
19" V6F-10DM
23.25" V6F-10DM
30.75" V12F-10DM
www.desatech.com
Flashing
Cone
Nail Only
Outer
Perimeter
of Flashing
Figure 24 - 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 Figures 24 and 25). Apply wa-
terproof caulking to all seams and notches
around storm and also at base around
shingles.
Chimney
Pipe
Storm
Collar
30" Min.
(76.2cm)
Figure 25 - Storm Collar
TERMINATIONS
The fireplace 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
RTL-12DM, which can be used for flashing
or chase and STL-12DM for chase style ter-
mination only. Figure 26, page 11, shows an
RTL-12DM round top termination.
CAUTION: Do not seal open-
ings on the rooftop flashing. Fol-
low the installation instructions
provided with the termination
being used.
Storm
Collar
Underlap
Shingles
at Bottom
Overlap
Shingles Top
and Sides Only
Waterproof
Caulk
Flashing
115607-01C