Venting Installation
Continued
INSTALLATION PLANNING
There are two basic types of
•Horizontal Termination
•Vertical Termination
Horizontal Termination Installation IMPORTANT: Horizontal square terminations require only inner portion of wall firestop. Horizontal installations using round termination require exterior portion of wall firestop (see Figure 14, page 12).
1. Set fireplace in its desired location and |
determine route your horizontal venting |
will take. Do not secure fireplace until all |
venting has been installed. Some instal- |
lations require sliding fireplace in and out |
of position to make final venting connec- |
tions. Figures 14 through 18 on pages 12 |
through 14 show different configurations |
for venting with horizontal termination that |
will help you decide which application best |
suits your installation. Check to see if wall |
studs or roof rafters are in the path of your |
desired venting route. If they are, you may |
want to adjust location of fireplace. |
2. Direct vent pipe sections and components |
are designed with special |
nections. |
pipes have locking lugs (indentations). |
These lugs will slide straight into match- |
5.Carefully determine location where vent pipe assembly will penetrate outside wall. Center of hole should line up with center line of horizontal vent pipe. Mark wall for a 11 1/2" x 11 1/2" square hole. Cut and frame square hole in exterior wall where vent will be terminated. If wall being penetrated is constructed of non- combustible material, such as masonry block or concrete, a 8 1/2" hole with zero clearance is acceptable (see Figure 9).
Female
Locking Lugs
Male
Slots
Figure 8 - Vent Pipe Connections
Vent Opening
Combustible Wall |
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11 1/2"
(29.2 cm)
(Framing
ing slots on male ends of adjacent pipes. |
Vent Opening
Detail)
Push pipe sections together and twist |
one section clockwise approximately one- |
quarter turn until sections are fully locked |
(see Figure 8). |
Note: Horizontal runs of vent must be sup- |
ported every three feet. Use wall straps |
for this purpose. |
3. Use a 45° elbow to connect venting sys- |
tem to fireplace flue collar. The elbow is |
designed to be |
as described in step 2. IMPORTANT: Do |
not attempt to alter configuration of elbow |
by cutting, twisting, bending, etc. |
4. Assemble desired combination of pipe |
and elbows to fireplace flue collar. If there |
are long portions of venting run, |
sembled pipe sections may be installed |
as subassemblies for convenience. |
Noncombustible Wall
8 1/2"
(21.6 cm)
Center of
Hole
Figure 9 - Vent Opening Requirements
10 | www.desatech.com |