Attic Horizontal Furnace Installation

Attic furnace access passageway and platform.

Attic horizontal furnace installation. Notice the drain pan under the air handling unit to catch condensation if the primary pan were to overflow. One of the latest talking points in this area is the installation of a furnace in the attic. So in an upflow vertical furnace the cold air is taken in from the bottom and the warm air is released from the top. These offer two possible configurations.

The furnace may be installed in an attic or crawl space in the horizontal position by placing the furnace on the left side as viewed from the front in the vertical posi tion. Horizontal flow systems are most often installed in attics and crawl spaces where space is limited due to a low ceiling and a standard upflow or downflow furnace just won t fit. A furnace in the attic also costs less to install than other designs since the access point to it is usually through the roof. Attic furnace installation must comply with you local mechanical code or imc international mechanical code if such was adopted in your area.

The following are a ttic furnace installation requirements based on 2009 irc and 2009 imc the codes refer to it as appliances in attics. Connect the aux iliary drain line to a separate drain line no trap is needed in this line. It is always recommended that an auxiliary drain pan be installed under a horizontally in stalled evaporator coil or 95 gas furnace. Attic installation horizontal flow air handler hvac airflow.

The flow refers to the direction of the air as it passes through the furnace or air handler. The drain must be installed through the core of the house as water will be flowing during the colder months. When you have this unit in a space that you normally don t use then it creates more usable space in your living environment. In a down flow furnace it s vice versa.

This is the secondary condensation pan which is installed under the air handler to save a ceiling. Horizontal installation is also available for some furnace and air handler models. This drain removes the excess water that a heating system will generate. Upflow horizontal and downflow horizontal models are also available.

The trick to the installation of a gas furnace in an attic space is routing the condensate drain from the attic down through the core of the house to the basement.