A horizontal gas furnace installation in an attic should be on a service platform large enough to allow for proper clearances on all sides and service access to the front of the furnace see manufacturer s i o manual.
Horizontal furnace installation in attic.
Horizontal installation is also available for some furnace and air handler models.
Followed during the installation servicing and opera tion of this furnace.
One of the latest talking points in this area is the installation of a furnace in the attic.
A horizontal furnace is designed with the components in a horizontal row so the unit looks like it s lying on its side.
High efficiency furnaces aren t usually recommended for an attic.
The drain must be installed through the core of the house as water will be flowing during the colder months.
This drain removes the excess water that a heating system will generate.
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.
Install this furnace only in a location and position as specified in location and clearances page 4 of these instructions.
The following are attic furnace installation requirements based on 2009 irc and 2009 imc the codes refer to it as appliances in attics.
Cool air flows in on one side and heated air flows out the other.
Use only with the type of gas approved for this fur nace.
A furnace can suffer from a drop in energy efficiency if it s in an unconditioned space such as an attic.
Horizontal units can be installed in attics garages or basements either by placing the device on a platform or suspending it from the ceiling.
Attic furnace access passageway and platform.
Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space.
Attic furnace installation must comply with you local mechanical code or imc international mechanical code if such was adopted in your area.
Attic furnace passageway and service area electrical requirement.
Refer to the furnace rating plate.