www.fmiproducts.com
114370-02H
6
VENTING SPECIFICATIONS FOR
INSTALLATION
The fireplace chimney flue and vent must be
drafting 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 obstruc
-
tion until proper venting is achieved.
The chimney flue must have a minimum free air
opening of 43" during operation of this log set.
A damper clamp is provided to fix the damper
in position.
The minimum flue sizes shown in Figure 2 are
based on a 6' chimney height using round pipe.
Your minimum flue size will vary based on input
rate and chimney height. Refer to the
National
Fuel Gas Code ANSI Z223.1/NFPA 54, Section
6.6
, for details.
For Massachusetts Residents Only
Installation of this vented gas log set in the
Commonwealth of Massachusetts requires
the damper be permanently removed or
welded in the fully open position.
INSTALLING DAMPER CLAMP
Secure the damper stop clamp to the edge
of the damper as shown in Figure 4, page 7.
If for any reason this clamp doesn't work on
your fireplace, another suitable clamp or per
-
manent stop must be installed, or the damper
blade must be cut or removed.
INSTALLATION
Continued
MODEL
BURNER
BTU
INPUT
MIN. VENT
OPENING
VTD-18NV-JHB
VTD-18PV-JHB 18" Ramp 59,000 8" dia.
VTD-24NV-JHB
VTD-24PV-JHB 24" Ramp 69,000 8" dia.
VTD-30NV-JHB
VTD-30PV-JHB 30" Ramp 74,000 8" dia.
MINIMUM FIREBOX SIZES
MODEL
FRONT WIDTH
BACK WIDTH*
DEPTH
HEIGHT
VTD-18NV-JHB
VTD-18PV-JHB
28"
16"
14"
18"
VTD-24NV-JHB
VTD-24PV-JHB
29
3
/
4
" 20"
15
1
/
2
" 18"
VTD-30NV-JHB
VTD-30PV-JHB
36"
27"
18"
18"
*At depth indicated
BURNER ORIFICE
LOG
SIZE
NATURAL
PROPANE/LP
INCHES
NO.
INCHES
NO.
18"
0.1495
25
0.0935
42
24"
0.1570
22
0.0980
40
30"
0.1660
19
0.1015
38
SPECIFICATIONS (W.C.)
FUEL INLET PRESSURE
MANIFOLD
PRESSURE
MIN.
MAX.
NG
5"
10.5"
3.5
LP
11"
14"
10
Figure 3 - Specifications
Figure 2 - Technical Information Charts
WARNING: Do not place lava
rocks and log scraps on burner.
CHECK GAS TYPE
Use the correct gas type (natural or propane/
LP) for your unit. If your gas supply is not cor-
rect, DO NOT install this into your fireplace.
See the dealer where you bought the appli
-
ance for proper type.
WARNING: This appliance is
equipped for either natural gas
or propane/LP gas but not both.
Gas type is indicated on the rat
-
ing plate. Field conversion is not
permitted.
INSTALLATION AND CLEARANCES
The charts in Figure 2 indicate technical
information regarding the installation of your
gas log set. Please make sure that all of the
specifications shown are applicable before
installation is attempted.
FLUE OPENING SPECIFICATIONS
Note: This vented appliance must be installed
only in a solid-fuel burning fireplace construct
-
ed of noncombustible material. The fireplace
must include a flue and venting system with
the minimum openings shown in Figure 3.
