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VTD-18N-JHB
VTD-4N-JHB
VTD-30N-JHB
MODEL
VTD-18N-JHB
VTD-4N-JHB
VTD-30N-JHB
*At depth indicated
BURNER ORIFICE
LOG SIZE
18"
4"
30"
VENTING SPECIFICATIONS FOR
INSTALLATION
The fireplace chimney flue and vent must be draft-
ing properly. To check the vent for proper drafting:
Light a tightly rolled newspaper on one end and
place it at the inside front edge of the fireplace.
Observe the smoke and be sure the vent is properly
drawing it up the chimney. If the smoke spills out
into the room, extinguish the flame and remove any
obstruction until proper venting is achieved.
The chimney flue must remain open a minimum of 3"
at all times during the operation of this log set.
INSTALLING DAMPER CLAMP
Secure the damper stop clamp to the edge of the
damper as shown in Figure 3. If for any reason this
clamp doesn't work on your fireplace, another suit-
able clamp or permanent stop must be installed, or
the damper blade must be cut or removed.
INSTALLATION
MODEL
DESCRIPTION
18" Ramp
4" Ramp
30" Ramp
MINIMUM FIREBOX SIZES
FRONT WIDTH
8"
9
/
"
3
4
3"
NATURAL
INCHES
NUMBER
0.1495
5
0.1570
0.10
19
Figure 2 - Technical Information Charts
www.desatech.com
Continued
BURNER
BTU
INPUT
59,000
9,000
74,000
BACK WIDTH*
1"
17"
7"
NG
Damper
Clamp
Masonry
Fireplace
Figure 3 - Attaching Damper Clamp
MINIMUM VENT
OPENING
8" dia.
8" dia.
8" dia.
DEPTH
HEIGHT
14"
15
/
"
1
18"
FUEL INLET PRESSURE
SPECIFICATIONS (W.C.)
MIN.
MAX.
5.5"
10.5"
Damper
Damper
Clamp
Damper
Manufactured
18"
18"
18"
Damper
Fireplace
114370-01D
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