Venting 80 Efficient Furnace

Must conform to the requirements of the national fire protection association.

Venting 80 efficient furnace.

80 gas furnace installation instructions gas furnace safety table of contents. You re replacing an 80 furnace in a vented space. 80 efficient horizontal venting. You cannot just take the vent off an 80 efficient furnace and run it out a side wall.

So what does this mean. High efficiency furnace venting uses two heat exchangers. The installation of the furnace wiring warm air ducts venting etc. Also known as the type b this vent is operating on the natural air convection.

Conventional furnaces use only one they use a two stage process. If you want a more energy efficient model consider a two stage unit with variable airflow before committing to a 95 furnace and the extra construction that it will require. A condensing furnace with an afue of 90 percent or above. Bought a new ruud 80 efficient updraft furnace to replace an inefficient 20 year old one.

This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. In the first stage gas is burned to heat the first heat exchanger. Go with a new 80 furnace. For even greater efficiency gains consider a two stage or fully modulating unit with variable airflow.

A condensing furnace with an afue of 90 or above incorporates a secondary heat exchanger to recover that lost heat. The national fuel gas code ansi. The vent pipe or flue is a vital component of the furnace that transmits emissions from the combustion process out of the building. Your new furnace will live in an enclosed or encapsulated space.

For many homes a gas furnace is the preferred heating device it has proven to be an efficient and reliable way of meeting household heating needs over the years. After the first heat exchanger is heated the second stage begins. In a standard efficiency 80 percent furnace 20 percent of the heat energy contained in the natural gas is exhausted up the furnace vent. An 80 efficient furnace can be side wall vented per national fuel as code 7 3 4 with the use of a mechanical draft system of either forced or induced draft design.

The instructions state horizontal vent with tjernlund power blower. There now seem to be some arguement as to the ability to vent horizontally with this unit. You need to use an auxiliary power inducer. In the second stage the secondary heat exchanger extracts heat out of the hot.

In a standard efficiency 80 furnace 20 of the heat contained in the natural gas is exhausted up the furnace vent.