HOOD TOP
HOOD SIDE
Fig. 26 — Adding Seal Strip to Back of Hood Top
Mounting Flange
GRAY FOAM STRIP
CROSS MEMBER
Fig. 27 — Adding Foam Strip to Cross Member
BLOCKOFF BAFFLE
GRAY FOAM STRIP
Fig. 28 — Adding Seal Strip to Block-Off Baffle
MOUNTING ANGLE
FILTER TRACK
ASSEMBLY
Fig. 29 — Mounting Angle Attached
to Filter Track Assembly
BLACK SEAL STRIP (CENTERED)
FILTER COVER
Fig. 30 — Attaching Seal Strip to Filter Cover
Step 10 — Position Power Exhaust/Barometric Relief Damper Hood — All units are shipped with the hoods folded inside the unit in a shipping position. For 48AJ, and AK units the hood must be tilted out once the unit is in- stalled. On 48AW, AY units, (designed for horizontal supply and return) the assemblies will have to be relocated to return ductwork. See Fig. 31 for dimensions and details.
All electrical connections have been made and adjusted at the factory. The power exhaust blowers and barometric relief dampers are shipped assembled and tilted back into the unit for shipping. Brackets and extra screws are shipped in shrink wrap around the dampers. If ordered, each unit will have 4
1.Remove 9 screws holding each damper assembly in place. See Fig. 32. Each damper assembly is secured with 3 screws on each side and 3 screws along the bottom.
Save screws.
CAUTION
Be careful when tilting blower assembly. Hoods and blow- ers are heavy and can cause injury if dropped.
2.Pivot each damper assembly outward until edges of damper assembly rest against inside wall of unit.
3.Secure each damper assembly to unit with 6 screws across top (3 screws provided) and bottom (3 screws from Step 1) of damper.
4.With screws saved from Step 1, install brackets on each side of damper assembly.
5.Remove tape from damper blades.
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