Venting installation instructions, Installation planning, Continued – Desa T32N-a SERIES User Manual

Page 9

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116646-01D

9

INSTALLATION pLANNING

There are two basic types of direct-vent instal-

lation:

• Horizontal Termination

• Vertical Termination
Horizontal Termination Installation
IMPORTANT:

Horizontal square terminations

require only inner portion of wall firestop. Hori-

zontal installations using round termination require

exterior portion of wall firestop available only in

vent kit HTK (see Figure 14, page 11).

1. Set the fireplace in its desired location and

determine the route your horizontal venting

will take. Do not secure the fireplace until

all venting has been installed. Some installa-

tions require sliding the fireplace in and out

of position to make final venting connections.

Figures 14 through 18 on pages 11 through 13

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 the location of the

fireplace.

2. Direct vent pipe sections and components are

designed with special twist-lock connections.

Twist-Lock procedure:

The female ends of

the pipes have locking lugs (indentations).

These lugs will slide straight into matching

slots on the male ends of adjacent pipes.

Push pipe sections together and twist one

section clockwise approximately one-quar-

ter turn until the sections are fully locked

(see Figure 8). Note: Horizontal runs of vent

must be supported every three feet. Use wall

straps for this purpose.

3. Use a 45° elbow to connect venting system

to fireplace flue collar. The elbow is designed

to be twist-locked onto the flue collar as

described in step 2. IMPORTANT: Do not

attempt to alter the configuration of the elbow

by cutting, twisting, bending, etc.

4. Assemble the desired combination of pipe and

elbows to the fireplace flue collar. If there are

long portions of venting run, pre-assembled

pipe sections may be installed as subassem-

blies for convenience.

VENTING INSTallaTION

INSTRUCTIONS

Continued

5. Carefully determine the location where the vent

pipe assembly will penetrate the outside wall.

The center of the hole should line up with the

center-line of the horizontal vent pipe. Mark the

wall for a 10

3

/

4

" x 10

3

/

4

" square hole. Cut and

frame the square hole in the exterior wall where

the vent will be terminated. If the wall being

penetrated is constructed of noncombustible

material, such as masonry block or concrete,

a 8

1

/

2

" hole with zero clearance is acceptable

(see Figure 9).

WARNING: Do not recess

vent termination into any wall.

This will cause a fire hazard.

(Framing

Detail)

10

3

/

4

"

10

3

/

4

" Inside Framing

10

3

/

4

"

8

1

/

2

"

Vent Opening

Combustible Wall

Vent Opening

Noncombustible Wall

Figure 8 - Vent Pipe Connections

Figure 9 - Vent Opening Requirements

Center
of Hole

Female
Locking Lugs

Male
Slots

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