INSTALLATION INSTRUCTIONS
WALL MOUNTING INFORMATION
1.Two holes, for the supply and return air openings, must be cut through the wall as shown in Figure 3.
2.On
WARNING
Fire hazard can result if 1/4 inch clearance to combustible materials for supply air duct is not maintained. See Figure 3.
3.Concrete block walls must be thoroughly inspected to insure that they are capable of carrying the weight of the unit installed.
MOUNTING THE UNIT
1.These units are secured by wall mounting brackets which secure the unit to the outside wall surface at both sides. A bottom mounting bracket is provided for ease of installation, but is not required.
2.The unit itself is suitable for “0” inch clearance, but the supply air duct flange and the first 3 feet of supply air duct require a minimum of 1/4 inch clearance to combustible material. If a combustible wall, use a minimum of 28½" x 8½" dimensions for sizing. However, it is generally recommended that a
WARNING
Failure to provide the 1/4 inch clearance between the supply duct and a combustible surface for the first 3 feet of duct can result in fire.
3.Locate and mark lag bolt locations and bottom mounting bracket location. See Figure 3.
4.Mount bottom mounting bracket, if used.
5.Hook top rain flashing under back bend of top. Top rain flashing is shipped secured to the back of the unit on the right side.
6.Position unit in opening and secure with 5/16 lag bolts; use 7/8 inch diameter flat washers on the lag bolts.
7.Secure rain flashing to wall and caulk across entire length of top. See Figure 3.
8.For additional mounting rigidity, the return air and supply air frames or collars can be drilled and screwed or welded to the structural wall itself (depending upon wall construction). Be sure to observe required clearance if combustible wall.
9.On
TOP OUTLET ONLY
1.Remove airframe angles from the back of the unit.
2.Coat angles with two 1/8" beads of silicone as shown. Silicone is shipped in the control panel. See Figure 5.
3.Secure angles to the top of the unit with 14 screws provided. Use prepunched holes provided. Do not relocate. See Figure 5.
4.After installation of duct work, seal around airframe and duct work to provide a rain tight seal.
5.It is strongly recommended, but not required, that this unit be installed under a soffit area large enough to shield the top of the unit. See Figure 6.
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