Can you direct vent an oil furnace?

Asked By: Sang Olbrecht | Last Updated: 29th May, 2020
Category: home and garden indoor environmental quality
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DIRECT VENTING OF OLSEN OIL FIRED FURNACES
The Direct Vent series is ideal for applications where a conventional chimney is unavailable, nor easily installed; an electrically heated home being retro-fit for oil forced air heating for example. The term Direct Vent refers to a sealed combustion system.

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Furthermore, can you vent an oil furnace through the wall?

Side Wall Vent Equipment for Oil Fired Boilers, Furnaces, Water Heaters. For safe and clean sidewall venting of oil fired heating equipment the vent system incorporates a power vent fan to assure that gases leave the building side wall with sufficient velocity to avoid sooting or otherwise harming the wall.

Similarly, do you need a chimney for an oil furnace? A properly-sized chimney liner protects against fire by providing a proper draft for your furnace, thus controlling the amount of heat moving through the chimney. And a properly-fitted chimney liner allows an oil furnace to work more efficiently, saving money on fuel.

Herein, how do I vent my oil furnace?

Another type of venting system for an oil furnace is single-wall metal flue vent pipes. A pipe and appropriate connectors run from the actual furnace unit out of the home for venting. According to the International Code Council, clearance area for this type of oil furnace venting is nine inches.

Can a gas furnace be vented horizontally?

Direct Vent The outer pipe draws air for combustion from outside, and the smaller pipe occupies the inner position and is used to vent the exhaust fumes. Piping can be set horizontally to allow venting through a sidewall, or vertical installation can also be undertaken to allow venting through the roof.

36 Related Question Answers Found

Where is the furnace vent located?

Take a mental note of where they exit the building and head outside. Once outside, look for the intake and exhaust pipes. They should be near where your furnace is on the inside. Normally, they are a set of curved pipes (PVC, CPVC, or ABS) near the foundation, although sometimes they are on or near the roof.

What is the difference between a direct vent and non direct vent furnace?

Single-pipe system: The single-pipe, non-direct vent system is used where there is no real need for a separate combustion air intake vent. It provides a vent pipe for exhaust gases but uses unconditioned (not cooled or heated) air from the space around the furnace for combustion air.

What is the most efficient oil furnace?

The Adams AHEO Highboy is a condensing oil fired furnace. It is the most efficient oil furnace available. Condensing technology requires a second heat exchanger to transfer as much heat as possible from combustion gases before they're vented.

How long can a furnace vent pipe be?

Vent Pipe Size and Length
Two 45° elbows are equivalent to one 90° elbow. The minimum length certified for use with this furnace is 5 ft and one elbow, not including the vent and air intake terminals.

What is a direct vent furnace?


What are direct vent heaters? Direct vent fireplaces and furnaces are heating systems that do not require exhaust chimneys in order to work. Conventional furnaces and fireplaces must draw air into them from inside a home and then exhaust the fumes to the outside.

How long can a direct vent be?

Assuming use of a 2" or 2 1/2" diameter vent pipe, with 1 elbow the maximum length can be 95 ft. , 2 elbows, 90 ft., and so on, dropping another 5 ft. in length for each elbow up to a maximum of 8 elbows and 60 ft.

Can a direct vent water heater be vented horizontally?

Direct vent or horizontally vented water heaters are designed for installation where vertical chimneys or flues are not available or would be more expensive to install. The vents go directly through an outside wall, and can also bring in combustion air to the gas burner.

How do you seal a furnace vent pipe?

Using Silicone Caulk
  1. Brush away any dirt or dust from the area around the furnace vent that you will be sealing.
  2. Cut the tip of a caulk tube with a utility knife.
  3. Inject the silicone caulk into the gap between the vent and the side of the house or foundation.
  4. Brush the area to be sealed with a stiff bristle brush.

How do you seal a furnace flue pipe?

  1. Cut the tip off your high temperature RTV silicone caulk tube with a knife.
  2. Insert the tube into your caulk gun.
  3. Squeeze the trigger with firm, even pressure as you move the tip around the seam on the furnace flue.
  4. Wet your finger and tool the bead by gently dragging your finger along its entire length.

Do oil boilers need ventilation?


Most new oil boilers will use a balanced flue as standard as they offer greater versatility in siting the boiler. Balanced flues do not require additional ventilation for the appliance to operate correctly as they are designed to carry fresh air in form outside to facilitate combustion.

What is a power vented furnace?

Power Vented Furnaces. In a “natural draft” furnace a chimney creates suction and pulls hot gases through the furnace's heat exchanger. However, if you don't have a chimney you need to use a fan to pull those gases through the furnace and out of the building — such a furnace is called a “power ventedfurnace.

What is a Type L vent?

Type L vents are designed for venting approved oil-fired and natural-gas appliances that produce draft hood flue gasses that do not exceed a temperature of 570º F (299º C), or 926º F (299º C) for 10 minutes in an over-fire situation. The minimum clearance from combustible materials is generally 3 inches.

What is a direct vent boiler?

A direct vent gas boiler is a unit that includes a closed horizontal piping system that goes through a side wall right to the outside for exhaust and intake air.

What gauge is flue pipe?

Standard Single
Single-wall stove pipe is used on standard wood stove installations. It should be at least 24-gauge sheet metal or thicker -- the lower the gauge, the thicker the metal. Typical code requires that single-wall stove pipe maintain at least an 18-inch clearance from any combustible material.

What is the purpose of a barometric damper?


Barometric dampers are a device installed into the flue between the heating appliance and the chimney to control draft. Barometric dampers are used in a wide range of heating appliances including furnaces, boilers, fireplaces, and stoves.

How often should a furnace chimney be cleaned?

The National Fire Protection Association 211 states that chimneys shall be “inspected annually and cleaned and repaired if needed”. Just as the oil furnace is serviced annually, so should your chimney system be serviced annually by a CSIA Certified Chimney Sweep®.

Does my chimney need a liner?

However, if you're not using your fireplace and your chimney acts solely as a vent for your furnace or water heater, you may not need to have a liner installed. Homeowners with gas or electric inserts most likely do not need a new liner because those types of fuel don't produce enough heat to damage a masonry chimney.