FMI WCM-42G - Manual (Page 11)

www.fmiproducts.com 122271-01D 11
VenTing inSTallaTion
Continued
17" Min.
30" Min.
1" Min.
1" Min.
1" Min.
Opening "A"
Roof Opening 36" Models
Pitch Slope Opening
"A" Max.
Used Flashing
Model No.
Flat 0° 17" V6F-10DM
0-6/12 26.6° 19" V6F-10DM
6/12-
12/12
45.0° 24" V12F-10DM
Roof Opening 42" and 50" Models
Pitch Slope Opening
"A" Max.
Used Flashing
Model No.
Flat 0° 19.5" V6F-10DM
0-6/12 26.6° 22' V6F-10DM
6/12-12/12 45.0° 27" V12F-10DM
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 roof.
19.5" Min.
30" Min.
2" Min.
2" Min.
2" Min.
Opening "A"
Figure 15 - Roof Opening Measurements
Nail Only
Outer
Perimeter
of Flashing
Storm Collar
Flashing
Cone
Underlap Shingles
at Bottom
Overlap
Shingles Top
and Sides Only
Figure 16 - Flashing Installation
FLASHING INSTALLATION (v6F-10DM
OR v12F-10DM)
Determine the flashing to be used with the 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 nail-
ing through shingles (see Figure 16). DO NOT
NAIL THROUGH FLASHING CONE.
Installing Flashing on a Metal Roof
When installing the flashing on a metal roof,
it is required that putty tape be used between
the flashing and the roof. The flashing must be
secured to the roof using #8 x 3/4" screws and
then sealed with roof coating to prevent leak-
age through the screw holes. A roof coating
must also be applied around the perimeter of
the flashing to provide a proper seal.
Storm Collar Installation (SC2-1)
Place storm collar over pipe and slide down
until it is snug against the open edge of the
flashing (see Figure 17). Apply waterproof
caulk around the perimeter of the collar to
provide a proper seal.
Figure 17 - Storm Collar
Chimney
Pipe
Waterproof
Caulk
Storm
Collar Flashing