Ducted Installation Comments

New Installations

The GE Zoneline 2500 and 3500 series are approved for ducted installation using the GE Duct Adapter model RAK6052 and the GE Duct Extension RAK601. A field fabricated duct extension with the same interior measurements as the RAK601 may be used with the RAK6052 duct adapter. GE does not recommend ducting in more than one direction.

The use of a duct adapter other than the RAK6052 is not approved by GE and may cause problems such as inadequate airflow to the secondary room or the unit shutting off on one of the overload devices.

Failure to allow for adequate air return from the secondary room is often the cause of less than satisfactory performance of a ducted installation.

Replacement Installations

GE offers duct adapters to allow for easy replacements of previous design chassis in ducted installations where a GE duct adapter was used in the original installation. A duct adapter is available that will align with the duct extension when GE built components were used in the original installation.

The duct extension used from the early 1960’s until late

1987 was 8-3/8" high by 6-1/2" wide. If the chassis to be replaced is the flat-top discharge (design until late 1987) the duct adapter model RAK7012 will align with the existing duct extension. This means the duct extension will not have to be changed. However, to keep the cost of the replacement to a minimum there are components that will need to be taken off the existing installation and used on the RAK7012 duct adapter. The wall case mounting brackets, screws, discharge grille, damper, and end cap will need to be retained.

If the chassis is a slope-front discharge and the duct dimensions are 8-3/8" high by 6-1/2" wide then the chassis has already been replaced and the purchase of a new duct adapter is not required. The only piece that needs to be replaced in this installation is the transition piece, model RAK7022, which fits between the chassis and the duct adapter.

If the chassis being replaced has a model number that begins with AZ22E or AZ32H the new 2500 or 3500 series unit can be installed using the same components that were used for the 2200 or 3200 series unit.

If the chassis is a slope-front discharge and the duct dimensions are 7-3/32" high by 6-1/2" wide only the RAK7022 transition piece is required to install a 2500 or 3500 series unit in the ducted installation.

There were a number of Zoneline units installed in ducted installations that did not use a GE duct adapter. The easiest way to determine if the existing duct adapter is a GE duct adapter is to compare the duct adapter dimensions to the dimensions above. If the dimensions are different than the dimensions above or it the duct adapter is not made of sheet metal, it is not a GE duct adapter. In such installations GE recommends the removal of the old duct adapter and duct extension and the installation of a RAK6052 duct adapter and a RAK601 duct extension. Zoneline units installed in installations not using GE duct adapters and an extension with the same cross-section dimensions as the duct adapter may not be covered by the warranty.

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GE 5500 manual New Installations, Replacement Installations
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5500 specifications

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