Desa CDR3924NT Owner's Operation And Installation Manual page 10

at least 8" up. If noncombustible material is
less than 12", you must install the fireplace
hood accessory. See Figure 5 for minimum
clearances.
If Using Mantel
You must have noncombustible material(s)
above the fireplace opening. Noncombustible
materials (such as slate, marble, tile, etc.)
must be at least 1/2" thick. With sheet metal,
you must have noncombustible material be-
hind it. Noncombustible material must extend
at least 8" up. If noncombustible material is
less than 12", you must install the fireplace
hood accessory. Even if noncombustible
10"
8"
6"
2 1 "
/2
Minimum
(A)
Noncombustible
Material
12"
Minimum
Noncombustible
Material Height
Figure 6 - Minimum Mantel Clearances
Without Using Hood
12"
10"
8"
6"
2½"
Minimum
Noncombustible
Material
Hood
(GA6050,
GA6052 or
GA6053)
Figure 7 - Minimum Mantel Clearances
When Using Hood
10
INSTALLATION
Mantel Shelf
Underside
of Mantel
Shelf
All minimum
distances are
in inches
18" 20" 22" 24"
Distances to
Underside of
Mantel
Mantel Shelf
Underside
of Mantel
Shelf
8" 12" 15" 18" 20"
Min.
Top of
Fireplace
Distances to
Opening
Underside of
Mantel
www.desatech.com
Continued
material is more than 12", you may need the
hood accessory to deflect heat away from
your mantel shelf. See Figure 5, page 9, and
Figures 6 and 7 for minimum clearances.
IMPORTANT: If you cannot meet these mini-
mum clearances, you must operate heater
with chimney flue damper open.
MANTEL CLEARANCES
In addition to meeting noncombustible mate-
rial clearances, you must also meet required
clearances between fireplace opening and
mantel shelf. If you do not meet the clearances
listed below, you will need a hood.
Determining Minimum Mantel Clearance
If you meet minimum clearance between
mantel shelf and top of fireplace opening, a
hood is not required (see Figure 6).
Determining Minimum Mantel Clearance
When Using a Hood
If minimum clearances in Figure 6 are not met,
you must have a hood. When using a hood
Log Set
there are still certain minimum mantel clear-
All
ances required. Follow minimum clearances
Models
shown in Figure 7 when using hood.
Top of
NOTICE: Surface temperatures
Fireplace
Opening
of adjacent walls and mantels
become hot during operation.
Walls and mantels above the
firebox may become hot to
the touch. If installed properly,
these temperatures meet the
requirement of the national
product standard. Follow all
minimum clearances shown in
this manual.
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
of the following:
• operate the logs only with the
flue damper open
• raise the mantel to an accept-
able height
• remove the mantel
122270-01D