Measuring for Gas Logs
It's important to buy the right size log set - improper sizing can interfere with proper drafting of your fireplace. If the logs are too large, the unit will not burn as efficiently and the size may hamper the proper operation of the control system. Too small a log set will diminish the beauty of your hearth setting. Look below to see the parts of the fireplace you'll need to measure before purchasing your log set - this area of your fireplace is called the "firebox".
Sizing and Specifications
By measuring the front width, back wall, depth and height of your firebox, you can determine what size log set you will need. The chart below can be used as a guide to select correct log set size. Log set sizing charts vary somewhat by manufacturer so you should check with your hearth dealer for the chart that matches the manufacturer you've selected.
Gas Log Sizing and Specifications
The Main Benefits of Gas Logs:
Can operate without electricity
Functional room decor
Leaves no smoky odor
No cleaning ashes
Added source of space heating
Environmentally friendly
Main Components of a Gas Log System:
-Gas logs (the number of logs included in a log set will vary by style and manufacturer)
-Fireplace grate (stand on which the logs are installed, sized according to the log set size)
-Gas burner system (burner type depends on fuel type and log style)
-Fuel injector (natural gas only)
-Sand (natural gas only)
-Vermiculite (propane gas)
-Damper Clamp (vented logs)
-Stabilizer clips
-Safety pilot (mandatory for vent free and propane gas, optional for natural gas)
Gas Requirements
Is a gas line currently installed?
If no, then a gas line or propane will need to be installed upon installation on the logs. A licensed gas installer should install your gas line.
If yes, please verify the following information: Is the natural gas line currently in place for a log lighter? If so, a larger gas line will most likely need to be installed. Again, any licensed gas installer can supply this service.
Vented or Vent Free Style Logs
Gas logs are sold in vented and vent free or unvented styles. Vented logs require an open damper in the fireplace to allow the heat to flow upwards and out of the chimney. Vented logs mirror the action of a wood-burning fireplace with the damper open.
While the vented logs do produce heat, vent free logs function more like a space heater because they do not require an open damper and the heat is confined to the room. However, vented logs are more aesthetically pleasing and not only supply some heat, but double as room decor.
Vent free logs require an Oxygen Depletion Sensor (ODS), a device that senses the amount of oxygen in the room and automatically shuts off the log set when oxygen level drops below 18%. The pilot on a vent free set that has been automatically shut off by the ODS can only be re-lit when fresh air is available. This may require opening a window or a door to another room or cracking the damper open slightly.
