C.Vertical Penetration Framing
WARNING
Fire Hazard
Keep loose materials or blown insulation from touch- ing the vent pipe.
•National building codes recommend us- ing attic shield to keep loose materials/ blown insulation from contacting vent.
•Hearth & Home Technologies requires the use of an attic shield.
Installing the Ceiling Firestop
•Frame an opening 10 inches by 10 inch- es whenever the vent system pene- trates a ceiling/floor (see Figure 6.3).
•Frame the area with the same sized lum- ber as used in ceiling/floor joist.
•When installing a top vent vertical termi- nation appliance the hole should be di- rectly above the appliance, unless the flue is offset.
•Do not pack insulation around the vent. Insulation must be kept away from the pipe.
Installing Attic Shield
Note: An additional ceiling firestop is not required if attic shield is used.
•Frame opening for attic shield.
•Attic shield may be installed above or below ceiling (see Figure 6.4).
|
| ATTIC |
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| ABOVE |
A |
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|
B |
|
|
| A | B |
DVP | 10 in. | 10 in. |
PIPE |
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|
Figure 6.3 |
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|
• Secure with three fasteners on each |
| BEND TABS IN |
|
side. |
|
| |
| AROUND PIPE |
| |
• Fold tabs at top of attic shield in toward |
| 3 FASTENERS |
|
vent pipe. Tabs must keep vent pipe |
|
| |
| PER SIDE |
| |
centered within shield. |
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|
|
• Field construct additional shield height |
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|
|
if insulation is deeper than height of at- | ATTIC SHIELD INSTALLED | ATTIC SHIELD INSTALLED | |
tic shield. | BELOW CEILING | ABOVE CEILING | |
| Figure 6.4 | Installing the Attic Shield |
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Heat & Glo | • | • | 19 |