Heatiator I80 owner manual B. Chase Top, C. Install the Termination Cap, Fire Risk

B. Chase Top

A metal chase top is required to seal the top of the chase around the chimney pipe. The top should include a turn- down and drip edge to prevent water from seeping into the chase. Provide a 1/8 in. (3 mm) gap around the flue pipe and slope the top downward away from the penetration. See Figure 6.3.

•All seams must be caulked to prevent leaks.

•A chase installation must use a chase top. Chase tops are available from your Heatilator dealer or may be field constructed.

•Attach the chase top to the top of the chase.

Termination Cap

•Install the chimney sections up through the chase enclosure. When using a TR11 or TR444 Round Termination Cap, the uppermost top section of pipe must extend 6 in. (152 mm) above the top of the flashing collar to allow installation of the storm collar and termination cap. See Figure 6.4.

Minimum 1-1/2 in. (38 mm) overlap of cap over pipe

Storm Collar

2 in. (51 mm) min.

6 in. (152mm) min.

Flashing Collar 2 in. (51 mm) min. collar

Caulk

2 in. (51 mm) Collar on Chase Top

Storm Collar

Slope Downward

Figure 6.4 Installing a TR11 or TR444 Round Termination Cap

• For installations utilizing a TR11T or TR442 Round

Turn-down Drip Edge

Chase (Chimney)

.018 (26 ga) min. Galvanized Chase Top

Figure 6.3 Chase Top Construction

C. Install the Termination Cap

Note: To protect against the effect of corrosion on those parts exposed to the weather, the termination cap can be painted with a rust-resistant paint.

WARNING

Fire Risk

•The minimum overlap of cap to pipe MUST be met or chimney may separate from cap.

Separation allows sparks, heat and embers to escape.

Telescoping Termination Cap, the uppermost chimney

section must be below the top of the chase top, but not

more than 14-1/2 in. (368 mm) below the top of the chase

top. Minimum overlap of chimney and termination cap

must be 1-1/2 in. (38 mm). See Figure 6.5.

	Storm Collar
Flashing Collar	2 in. (51 mm) min.
	14-1/2 in. (368mm) max.
Top of Pipe
	1-1/2 in. (38 mm) min.
	overlap

Figure 6.5 Installing a TR11T or TR442 Round Telescoping Termi- nation Cap

Heatilator • I80 CAN-US • 4013-203 Rev F • 04/08 27