Enviro 50-029 用户手册

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页码 33
Initial Installation
QUALIFIED INSTALLERS ONLY
Vertical
Termination
Storm Collar
Flashing
Roofing nails
Elbow Strap
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 the support straps outwards, and push the elbow strap 
down to the roof level, as shown in Figure 21. Tighten the clamp around the pipe section. Use 
a level to make sure the pipe is truly vertical. With roofing nails, secure the 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 with roofing nails. Use a non-hardening sealant between the uphill edge of 
Figure 21: Vertical Vent Termination Installation.
Table 3: Minimum ‘H’ for Figure 22.
Roof Pitch
Minimum Height
Feet
Meters
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
Over 18/12 to 20/12
7.5
2.29
Over 20/12 to 21/12
8
2.44
Figure 22: Height of Vertical Termination; 
Reference Table 3. 
the flashing and the roof. Insure the roofing 
material overlaps the top edge of the flashing 
as shown in Figure 21. Verify that you have at 
least the minimum clearance to combustibles 
at the roof line.
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