Installation Guide
www.factorybuysdirect.com
200254-01A4
SPECIFICATIONS
Check to be sure that the replace meets 
the venting and construction requirements 
for the installation of the burner system.
THIS BURNER IS DESIGNED FOR USE 
WITH  NATURAL  GAS.  PROPANE/LP 
CONVERSION CAN BE ACHIEVED WITH 
A  SAFETY  PILOT  KIT.  Never  use  natural 
gas in a burner system designed for use with 
propane gas and never use propane gas in a 
burner designed for natural gas.
This product is not recommended for use 
in temperatures below 32°F.
Be  sure  the  burner  system  is  properly 
sized  for  the  fireplace.  Improper  sizing 
may negatively impact the proper drafting of 
the replace. Figure 1  illustrates  the critical 
dimensions of the rebox.
Note: This vented appliance must be installed 
only  in  a  solid-fuel  burning  replace  with  a 
working ue and constructed of noncombus-
tible material.
The charts indicate technical information re-
garding the installation of your gas appliance. 
Please make sure that all of the specications 
shown  are  applicable  before  installation  is 
attempted.
The replace must include a working ue and 
venting system with the minimum  openings 
shown as below.
The replace must have a gas supply line that 
has been installed  by  a qualied technician 
in accordance with all local codes. The gas 
supply line must have a 1/2" minimum interior 
diameter.  If  the  gas  line  to  the  replace  is 
longer  than  20',  a  larger  diameter  line  may 
be necessary.
Be  sure  to  clean  the  replace  oor  of  any 
ashes or other foreign materials. It is recom-
mended  that  the  replace  and  chimney  be 
examined and cleaned by a chimney sweep 
or  other  qualied  person  before  you  install 
the burner system, and annually thereafter.
MINIMUM FIREPLACE DIMENSIONS
Model Front Width* Rear Width * Depth Height
FGB14-1 26" NG/30" LP 20" NG/22" LP 12" NG/15" LP 18"
FGB18-1 28" NG/32" LP 24" NG/28" LP 12" NG/15" LP 18"
FGB24-1 34" NG/40" LP 28" NG/34" LP 12" NG/15" LP 18"
* Add 4" when using on/off valve safety pilot kit
Rear
Width
Height
Depth
Front
Width
Opening
Figure 1 - Fireplace Dimensions










