Step 11 - Position Optional Power Exhaust Or Barometric Relief Damper Hood; Step 12 - Non-Fused Disconnect; Step 13 - Install All Accessories; Xii. Step 12 — Non-Fused Disconnect - Bryant DURAPAC PLUS 581A Installation And Service Instructions Manual

XI. STEP 11 — POSITION OPTIONAL POWER EXHAUST
OR BAROMETRIC RELIEF DAMPER HOOD
The optional power exhaust or 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.
1. Remove 9 screws holding each damper assembly in
place. See Fig. 21. 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 assem-
bly. Hoods and blowers are heavy and can cause injury
if dropped.
2. Pivot the damper assembly outward until top edge of
the damper assembly rests against the 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. See Fig. 22.
5. Remove tape from damper blades.
XII. STEP 12 — NON-FUSED DISCONNECT
The handle for the factory-installed non-fused disconnect is
shipped inside the unit to prevent the handle from being
damaged during shipping. Follow these steps to complete
installation of the handle.
WARNING: Be sure power is shut off to the unit
from the building power supply.
1. Open the control box access door.
2. Remove the small cover plate located on the unit cor-
ner post near the control section.
3. Remove the inner control box cover. The handle and
shaft are located in a plastic bag at the bottom of the
control box.
4. Insert the square shaft into the disconnect with the
pins vertical. On the 100-amp disconnect, the shaft is
keyed into the disconnect and can only be installed
one way (with the pins vertical).
5. Insert the handle through the corner post and onto
the shaft with the handle positioned so that "OFF" is
on top.
Fig. 21 — Power Exhaust or Barometric Relief Damper Mounting Details
Fig. 22 — Bracket and Hood Positioning
6. Rotate the handle to the "ON" position to lock the
pins into the handle.
7. From the inside of the corner post, attach the handle
mounting screws to the handle. Slide the shaft fully
into the handle and tighten the set screw(s) on the
disconnect to lock the shaft. Tighten the screws that
attach the handle to the corner post.
8. Rotate the handle back to the "OFF" position.
9. Replace all panels and doors. Power can now be
turned back on to the unit.
XIII. STEP 13 — INSTALL ALL ACCESSORIES
After all of the factory-installed options have been adjusted,
install all field-installed accessories. Refer to the accessory
installation instructions included with each accessory. Con-
sult the Bryant Price Pages for accessory package numbers
for particular applications.
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