Step 3.
For installations using a round support box/wall thimble (check pipe manufacturer's instructions), mark the wall for a 10 in. x 10 in. (254mm x 254mm) square hole. The center of the square hole should line up with the center line of the horizontal pipe, as shown in Figure 5.5. Cut and frame the hole in the exterior wall where the vent will be terminated. If the wall being penetrated is constructed of noncombustible material, i.e. masonry block or concrete, a 7 in. (178mm) diameter hole is acceptable.
NOTE:
(1) Installation requires a minimum of 11 in. (279mm) |
horizontal run. Each 1 ft. (305mm) of horizontal vent |
run must include a 1/4 in. (6mm) of vertical rise towards |
the termination. Never allow the vent to run downward. |
This could cause high temperatures and may present |
the possibility of a house or structure fire. |
(2) The location of the horizontal vent termination on an |
exterior wall must meet all local and national building |
codes, and must not be easily blocked or obstructed, |
see Figure 4.4 on page 9. |
Center Line
Wall Thimble
Center of Hole
Center Line
(3) For installations requiring a vertical rise on the exterior |
of the building, a snorkel kit is available with a 14 in. |
(356mm) and a 36 in. (914mm) tall snorkel termination |
cap. Follow the same installation procedures as used |
for standard horizontal terminations. If the snorkel |
termination must be installed below grade (i.e. basement |
application), proper drainage must be provided to |
prevent water from entering the snorkel termination. Do |
not backfill around snorkel termination. |
Step 4.
Position the horizontal termination cap in the center of the 10 in. x 10 in. (254mm x 254mm) square hole and run a bead of
Center of H
Center Line
Center Line
Wall Thimble
45° Elbow in Corner Installation
Wall Thimble
14 in. (356mm) Pipe Length
Max. Wall Depth = 10 in. (254mm)
1 in. (25mm) Clearanc
arrow on the vent cap should be pointing up (Figure 5.6).
WOOD
SCREW
HOT |
WALL THIMBLE
Figure 5.6
NOTES:
45°
from stove corner to combustible wall.
(1) The four wood screws provided should be replaced with |
Elbow
1 in. (25mm) Clearance from stove corner to combustible wall.
When installing the Sapphire in a rear vent configuration with no vertical rise: a Snorkel Kit must be used, and a derating orifice must be installed. The appropriate orifice is supplied with the Rear Vent Kit.
Figure 5.5
appropriate fasteners for stucco, brick, concrete, or |
other types of sidings. |
(2) A termination cap with a |
highly recommended on a building with vinyl siding. The |
pilot hole will be 2 in. (51mm) closer to the bottom of the |
square than the top. Using a framing square, draw a 14 |
in. x 14 in. (356mm x 356mm) square around the pilot |
hole in the siding. See Figure 5.7 on the next page. |
September 1, 2008 | Page 13 |