How do I know if my gas logs need to be vented?
Turn on the fireplace. If the flames reach above the gas logs and the look like a wood burning fireplace, then the logs must be vented. If the flames are small, an have a blue cast, the fireplace is vent-free.
Do gas log fireplaces need to be vented?
Vented gas logs must be vented through a functional chimney in order to move all burning by-products outside the home. Vented gas logs produce the most realistic flames but put off less heat than their vent-free counterparts due mostly to the fact the chimney flue must be open when the fireplace is in use.
How much clearance does a gas fireplace vent need?
Highlights of Gas Heater Vent Clearance Distances The vent terminal shall be at least 12-inches below, 12-inches horizontally from, or 12-inches above, any door, window, or gravity air inlet into a building. The bottom of the vent terminal shall be located at least 12-inches above grade.
How far above the roof should a gas vent be?
two feet
Gas vents shall extend at least two feet above the highest construction, such as a roof ridge, parapet wall, or penthouse, within ten feet of the vent outlet whether the construction is on the same building as the chimney or on another building.
How far can you vent a gas fireplace horizontally?
| Minimum Clearance Distance Requirements for the Exterior Vent Termination of a Gas Fireplace Heater8 | |
|---|---|
| Direct vent gas fireplace exhaust termination item clearance distance | Distance required (Canada)1 |
| Clearance to a mechanical air supply inlet 3′ (91cm) above if within 10′ (3m) horizontally | 72″ (1.8m) |
Can gas logs cause carbon monoxide poisoning?
Just like real burning logs, both types of gas logs produce carbon monoxide — a toxic gas that can be lethal — when they burn. Venting and proper use of a gas fireplace can help keep CO at a safe level.
What is the difference between Vented gas logs and vent free?
Vented gas logs burn like a real wood fire with a yellow flame that produces smoke. They must be burned in a wood burning fireplace with the damper open, so smoke goes up the flue along with most of the heat. Ventless (vent-free) gas logs burn cleanly with a lower flame that does not smoke.
How far can you horizontally vent a gas fireplace?
What are the termination requirements for gas vents that are over 12 inches in size or are located less than 8 feet from a vertical wall or similar obstruction?
Gas vents that are over 12 inches (305 mm) in size or are located less than 8 feet (2438 mm) from a vertical wall or similar obstruction shall terminate not less than 2 feet (610 mm) above the highest point where they pass through the roof and not less than 2 feet (610 mm) above any portion of a building within 10 feet …
Can a gas fireplace be vented downward?
Power venting also provides more flexibility when it comes to locating the termination. Since there is no requirement for rise, power-vented systems can also be routed downward into floor space below and then terminated through a sidewall.
Can you vent a gas fireplace to the side?
They can be vented up through the roof or out to the side or back of a house; a perfect solution for homes without an existing chimney. Direct-vent units must, however, have a sealed glass door to maintain proper combustion and ensure efficiency and indoor air quality.
Can you vent ventless gas logs?
Ventless fireplaces are not designed to have a vent added to them. Your only alternative is to tear out the existing ventless fireplace and replace it with a vented fireplace. You cannot use a vented gas log in a vent-free firepalce, nor can you burn wood in it.
Can gas fireplace logs catch on fire?
If you’ve been told by an inspector, contractor or chimney sweep that your chimney isn’t safe to burn wood, do not use it for a gas fire. Your gas logs will produce heat and exhaust. If your chimney is not properly insulated or sealed, you could light your house on fire.
Should I crack a window when using fireplace?
To alleviate this problem, make sure that your basement fireplace damper is closed. The best solution is to crack a window in the basement (about a quarter of an inch) when you use your upstairs fireplace.
Are ventless gas logs safe?
Ventless fireplaces produce small amounts of nitrous dioxide and carbon monoxide which can be deadly in large doses. The CDC warns against exposure of any level of carbon monoxide, stating that up to 500 people die per year due to accidental carbon monoxide poisoning.