Hearth and Home Technologies TIARAI-BR-B, TIARAI-CES Step, 203mm, Center Of Hole Center Line

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.

WOOD

SCREW

HOT

WALL THIMBLE

CENTER

LINE

WALL

THIMBLE

CENTER OF HOLE

CENTER

LINE

Figure 5.6

NOTES:

(1)The four wood screws provided should be replaced with appropriate fasteners for stucco, brick, concrete, or other types of sidings.

(2)A termination cap with a built-in vinyl standoff is 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. See Figure 5.7.

Figure 5.5

NOTE:

(1)Installation requires a minimum of 6 in. (152mm) horizontal run of vent with a 1/4 in. (6mm) rise run towards the termination. Each 1 ft. (305mm) of horizontal venting must include a 1/4 in. (6mm) rise. Never allow the vent to run downward. This could cause high temperatures and may present the possibility of a 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 10.

(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 non-hardening mastic around its outside edges, so as to make a seal between it and the wall, attach termination cap to the exterior wall with the four wood screws provided. The arrow on the vent cap should be pointing up (Figure 5.6).

8 in.
(203mm)
	7 in.
	(178mm)
7 in.	6 in.
(178mm)
	(152mm)

Figure 5.7

(NOTE: Some termination caps may cause the vent pipe to be off center on flashing.). Ensure that proper clearances to combustible materials are maintained. If you are not using an approved termination cap with a built- in standoff on a building with vinyl siding, a vinyl siding standoff should be installed between the termination cap and the exterior wall (Figure 5.8, on the next page). Follow manufacturer’s instructions for attaching the vinyl siding standoff to the horizontal termination cap. The vinyl siding standoff prevents excessive heat from possibly melting the vinyl siding material. The vent terminal cap shall not be recessed into a wall or siding. Remove siding from the area where the standoff will be located.

Page 14 Heat & Glo · Tiara I B & Tiara II B · 7010-149M August 1, 2008