Sophomore Series 4000 & 5000 Cabinet - Classroom Air Handler - Owner's Manual - Installation, Operation, and Service Instructions
www.changeair.com
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If an electric duct heater is supplied either by others or by Changeair it must have its
own supply line voltage. It can not be connected to the unit.
In Canada, the unit must be installed and electrically grounded in accordance with
local codes, or the Canadian Electric Code CSA C22.1. In the U.S. installation must be
in accordance with the most current issue of the National Electric Code ANSI/NFPA 70.
Always turn off the
electrical supply to the
unit before repair or major
service. Failure to do so
may result in personal
injury.
5.3 Wall Sleeve
Wall sleeves are typically shipped knocked down and must be field assembled.
Before proceeding, the wall opening must be prepared in accordance to the installation drawings, relative to the final installed
position of the unit. It will likely be necessary to provide a support header across the top of the opening to comply with local
building code requirements.
Tip: DO NOT install the exterior louver until after the unit is fastened securely to the wall.
1.
Prior to assembly, it may be necessary to trim the depth of the wall sleeve to suit the finished wall thickness. If the finished
wall depth is greater than that of the wall sleeve or if the unit has a rear standoff, it may be necessary to add extensions to
the sleeve and dividers, which must be fabricated in the field.
2.
Assembly of the wall sleeve is detailed in the assembly drawings enclosed in the information package provided with the unit.
We recommend the use of ½” x #10 round head self tapping sheet metal screws to fasten each component together. Screws
must be installed with heads out to prevent them from catching in the rough wall opening during installation.
3.
To assure a tight seal between the wall sleeve and the unit, apply foam tape to the mounting flanges of sleeve and dividers.
Tip: Be careful not to insert screws where they may interfere with the insertion of the Exterior Louver. Do not insert
screws into the bottom pan of the wall sleeve as this may allow water to seep into the wall cavity.
4.
Insert the wall sleeve through the rough wall opening from the inside of the building and secure it into place.
Refer to custom shop and installation drawings and instructions in the Information Package that was sent with the Unit
for exact measurements, descriptions and installation details.
The wall sleeve comes with a partition between the condenser coil fresh air intake portion and
the condenser coil exhaust portion. It is imperative the partition meets (butts-up to) the exterior
louver to prevent recycling of hot condenser exhaust air into the condenser coil fresh intake air.
The wall sleeve comes with this partition; however some field adjustments may be required to
either shorten or extend the partition to meet the exterior louver.
