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111987-01D
16
VENTING INSTALLATION
INSTRUCTIONS
Continued
Note
: Install
restrictor into
inner collar of
fireplace as
shown.
Venting with Two 90° Elbows
vertical (v
1
)
Horizontal (H)
5' min.
6' max.
6' min.
1' max.
7' min.
18' max.
8' min.
0' max.
Note:
Vertical (V
1
) + Vertical (V
) = 40' max.
Figure 23 - Vertical Venting
Configuration Using Two 90° Elbows
(Vertical Round High Wind Termination
Shown)
45° Elbow
Vertical Venting
V = 40' max.
Figure 24 - Vertical Venting
Configuration With No Horizontal Run
(Vertical Round High Wind Termination
Shown)
Note
: Install
restrictor into
inner collar of
fireplace as
shown.
45° Elbow
HIGH ALTITUDE INSTALLATION
Your DESA direct-vent fireplace has been tested and
approved for elevations from 0-2,000 feet (USA)
and elevations from 0-4,500 feet (Canada).
When installing this fireplace at an elevation
above 2,000 feet (in the USA), you may need to
decrease the input rating by changing the existing
burner orifice to a smaller size. Reduce input 4%
for each 1,000 feet above sea level. Check with
your local gas company for proper orifice size
identification.
When installing this fireplace at an elevation
above 4,500 feet (in Canada), check with local
authorities.
IMPORTANT:
For horizontal installations
above 2,000 feet, it is recommended that a 12"
extension pipe be added before starter elbow
(see Figure 25, page 17 ).
