Enviro C-10450 owner manual Roof Pitch Minimum Height, Feet Meters

Initial Installation

QUALIFIED INSTALLERS ONLY

STEP 5. Cut hole in the roof centered on the small hole placed in the roof from Step 2. The hole should be of sufficient size to meet minimum requirements for Clearance to Combustibles, as specified. Continue to assemble lengths of pipe and elbows necessary to reach from the ceiling support box up through the roof line. Galvanized pipe and elbows may be utilized in the attic, as well as above the roof line. The galvanized finish is desirable above the roof line, due to the higher corrosion resistance.

STEP 6. Once the pipe sections have been joined, and run up through the hole in the roof, slip an elbow strap over

the exposed sections, bend				Vertical
the support straps outwards,
and push the elbow strap				Termination
down to the roof level, as			Elbow Strap	Storm Collar
shown in Figure 15. Tighten
the clamp around the pipe				Flashing
section. Use a level to make
sure the pipe is truly vertical.
With roofing nails, secure the				Roofing nails
support straps to the roof.
Seal the nails holes heads
with non-hardening mastic.
Trim the excess length of the
support	straps that	extend
out beyond the edge of the
flashing.
STEP 7. Slip the flashing over the pipe
section	protruding	through
the roof. Secure the base
of the flashing to the roof			Figure 15: Vertical Vent Termination Installation.
with roofing nails. Use a
non-hardening sealant between the uphill edge
of the flashing and the roof. Insure the roofing				Table 3: Minimum ‘H’ for Figure 16
material overlaps the top edge of the flashing as
				Roof Pitch	Minimum Height
shown in Figure 15. Verify that you have at least
the minimum clearance to combustibles at the					Feet	Meters
roof line.				Flat to 7/8	1	0.3
				Over 7/12 to 8/12	1.5	0.46
				Over 8/12 to 9/12	2	0.61
				Over 9/12 to 10/12	2.5	0.76
				Over 10/12 to 11/12	3.25	0.99
				Over 11/12 to 12/12	4	1.22
				Over 12/12 to 14/12	5	1.52
				Over 14/12 to 16/12	6	1.83
				Over 16/12 to 18/12	7	2.13
Figure 16: Height of Vertical Termination;				Over 18/12 to 20/12	7.5	2.29
				Over 20/12 to 21/12	8	2.44
	Reference Table 3.

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