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Sizing the Vented Gas Log Set for the Fireplace

- BACK TO PETERSON GAS LOGS

*** Please click the picture above to enlarge the diagram in a separate screen. ***  It is important that the gas log set is properly sized to fit the fireplace.  Improper sizing may negatively impact the proper drafting of the fireplace.  Additionally, too large a log set will adversely affect the burn and hamper the proper operation of the control system.  Too small a set will diminish the beauty of the hearth setting. Measure the fireplace using the dimensions illustrated (Figure 1).  Compare these to the set dimensions found in the table above.  A minimum of 2 inches of space must be maintained between the side walls of the fireplace and the burner system equipment.

For improved aesthetics, the gas logs and the burner pan should be centered in the fireplace. This may result in the control system on the burners extending further to one side.  Be sure to allow for space to accommodate the control system (Figure 2).

To calculate the largest vented gas logs set that will fit in your fireplace properly, do the following:

  • Measure the fireplace getting the dimensions as noted above.
  • Compare the dimensions to the chart below.
  • Subtract 4 inches from your fireplace's Front Width to allow for the minimum of 2 inches of space that are needed between the side walls of the fireplace and the burner system equipment. 
  • If you are NOT adding a Pilot Kit (Natural Gas Units Only), this gives you a total of 4 inches that are needed to subtract from your fireplace's Front Width.  The remaining total is the largest size vented gas log set that will fit properly in your fireplace.
  • If you will be getting a Safety Pilot Kit (required in propane units), you must subtract another 4 inches from your fireplace's Front Width to compensate for the size of the Safety Pilot Kit.  This gives you a total of 8 inches that are needed to subtract from your fireplace's Front Width.  The remaining total is the largest size vented gas log set that will fit properly in your fireplace.
  • If you will be getting an Automatic Pilot Kit (i.e. remote ready kits), you must subtract another 8 inches from your fireplace's Front Width measurement to compensate for the size of the Automatic Pilot Kit.  This gives you a total of 12 inches that are needed to subtract from your fireplace's Front Width measurement.  The remaining total is the largest size vented gas log set that will fit properly in your fireplace.
*** It is recommended to include complete fireplace dimensions (Front Width, Rear Width, Depth, & Height) in the comments section when placing your order to ensure proper sizing.

Log Set Size

Log Set Dimensions

Front Width  

Rear Width

Depth

12"

12"

12"

9"

16"

16"

12"

9"

18"

18"

15"

12"

19" 19" 15" 12"

20"

20"

15"

12"

24"

24"

20"

12"

30"

30"

24"

12"

36"

36"

30"

13"

42"

42"

36"

20"

48"

48"

42"

20"

54"

54"

48"

20"

60"

60"

54"

20"