26
5.2WALL AND CEILING PROTECTION
!WARNING
DO NOT FILL THE SPACE BETWEEN THE VENT PIPE AND ENCLOSURE WITH ANY TYPE OF MATERIAL. DO NOT PACK INSULATION OR COMBUSTIBLES BETWEEN CEILING FIRESTOPS. ALWAYS MAINTAIN SPECIFIED CLEARANCES AROUND VENTING AND FIRESTOP SYSTEMS. INSTALL WALL SHIELDS AND FIRESTOPS AS SPECIFIED. FAILURE TO KEEP INSULATION OR OTHER MATERIALS AWAY FROM VENT PIPE MAY CAUSE FIRE.
70.1
For optimum performance, it is recommended that all horizontal runs have a minimum 1/4" rise per foot when venting. For safe and proper operation of the appliance, follow the venting instructions exactly.
5.2.1 HORIZONTAL INSTALLATION
!WARNING
THE FIRESTOP ASSEMBLY MUST BE INSTALLED WITH THE VENT SHIELD TO THE TOP.
TERMINALS MUST NOT BE RECESSED INTO A WALL OR SIDING MORE THAN THE DEPTH OF THE
RETURN FLANGE OF THE MOUNTING PLATE.
This application occurs when venting through an exterior wall. Having determined the correct height for the air terminal
location, cut and frame a hole in the exterior wall as |
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illustrated to accommodate the firestop assembly. | CAULKING | |
Dry fit the firestop assembly before proceeding to | ||
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ensure the brackets on the rear surface fit to the |
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inside surface of the horizontal framing. | FIRESTOP | |
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The length of the vent shield may be cut shorter | SPACER | |
for combustible walls that are less than 8 1/2” thick |
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but the vent shield must extend the full depth of the |
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combustible wall. |
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VENT
SHIELD
10"1/2 
9 1/2"
DETERMINE THE CORRECT HEIGHT
A. Apply a bead of caulking (not supplied) around the corner edge of | FINISHING |
the inside surface of the firestop assembly, fit the firestop | MATERIAL |
assembly to the hole and secure using the 4 screws |
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(supplied in your manual baggie). | FIGURE 5.2.1 |
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B.Once the vent pipe is installed in its final position, apply high temperature sealant
20.2