Hearth & Home Technologies Cinch Pipe & Termination Cap System User Manual

Hearth & Home Technologies Inc. • Cinch Pipe & Term Caps • 4033-900 Rev K • 05/05

3 in. (76 mm)
top clearance

1 in. (25 mm)
clearance
bottom & sides

Heat
Shield

Wall

Shield

Heat
Shield

WALL

Note: Heat shields
MUST overlap by a
minimum of
1-1/2 in. (38 mm).

Figure 2.2

Horizontal Venting Clearances to Combustible Materi-

als - Rear Vent

A. Clearances for the Vent Sections

•

Top Vented Direct Vent Appliances

For all top vented, direct vent appliances, clearances to
combustible materials from the venting system need to
be maintained as shown in Figure 2.1.

• Rear Vented Direct Vent Appliances

See Figure 2.2.

Figure 2.1

Horizontal Venting Clearances to Combustible Materi-

als - Top Vent

Note:

For termination cap installations only, go directly to Sec-

tion E.

Note:

Refer to the appliance installation instructions for al-

lowed vent lengths and conﬁ gurations.

Installing Vent Pipe

B. Penetrating a Wall

Wherever a combustible wall is penetrated, the hole must
be framed with an interior wall shield (DVP-WS) as shown in
Figures 2.3-2.4. This shield maintains minimum clearances
and restricts cold air inﬁ ltration. If the wall being penetrated is
of noncombustible materials (material which will not ignite or
burn, or has a UL ﬁ re rating of zero), a 9 in. diameter hole is
acceptable. Whenever a wall is penetrated the wall shield is only
required on one side and no heat shield is necessary. If your
local inspector requires the wall shield on both sides, then both
wall shields must have a heat shield attached to them.

Figure 2.4

Interior Wall Shield

Figure 2.3

Exterior Wall Hole

Note:

Heat shields MUST overlap by 1-1/2 in. min. for rear

vented appliances.

Fire Risk
Explosion Risk

Maintain vent clearance to combustibles as
speciﬁ ed.
• Do not pack air space with insulation or

other materials.

Failure to keep insulation or other materials
away from vent pipe may cause ﬁ re.

WARNING