Desa WCM-42J Venting Installation, Continued, Flashing Installation, Roof Opening Measurements

Venting Installation

Continued

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.

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.

17" Min.

1" Min.

1" Min.

30" Min.

1" Min.

Opening "A"

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	Overlap
	Shingles Top
Flashing
	and Sides Only

Pitch	Slope	Opening	Used Flashing
		"A" Max.	Model No.
Flat	0°	17"	V6F-10DM
0-6/12	26.6°	19"	V6F-10DM
6/12-	45.0°	24"	V12F-10DM
12/12
	Roof Opening 36" Models
19.5" Min.			30" Min.
		2" Min.
			2" Min.
		2" Min.
			Opening "A"

Cone

Nail Only

Outer

Perimeter

of Flashing

Underlap Shingles

at Bottom

Figure 16 - Flashing Installation

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.

Pitch	Slope	Opening	Used Flashing
		"A" Max.	Model No.
Flat	0°	19.5"	V6F-10DM
0-6/12	26.6°	22'	V6F-10DM
6/12-	45.0°	27"	V12F-10DM
12/12

Roof Opening 42" and 50" Models

Figure 15 - Roof Opening Measurements

Chimney	Waterproof
Pipe	Caulk
Storm	Flashing
Collar

Figure 17 - Storm Collar

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