30
Fig. 39 —
Bottom Filters Installed with Flange
Pointing Down
Fig. 40 —
Attaching Seal Strip to Filter Cover
Fig. 41 —
Filters and Filter Cover
Step 11 — Position Power Exhaust/Barometric
Relief Damper Hood
All units are shipped with the hoods folded inside the unit in a
shipping position. For 48A2,A3,A6,A7 units the hood must be tilt
-
ed out once the unit is installed. On 48A4,A5,A8,A9 units (de
-
signed for horizontal supply and return), the assemblies will have
to be relocated to the return ductwork. See Fig. 42 for dimensions
and details.
All electrical connections have been made and adjusted at the fac
-
tory. 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 (48A020-050 units) or 6
(48A060 units) power exhaust blowers and motors or barometric
relief dampers.
1. Remove 9 screws holding each damper assembly in place.
See Fig. 43. Each damper assembly is secured with 3 screws
on each side and 3 screws along the bottom.
Save screws.
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.
FLANGE
POINTING
DOWN
MOUNTING
ANGLE
BLACK SEAL STRIP
(CENTERED)
FILTER COVER
FILTER
COVER
FILTERS
CAUTION
Be careful when tilting blower assembly. Hoods and blowers
are heavy and can cause injury if dropped.
