Step 10 - Install Outdoor-Air Hood - Bryant DURAPAC PLUS 581A Installation And Service Instructions Manual

LEGEND
EQUIP — Equipment
GND — Ground
NEC — National Electrical Code
TB — Terminal Board
NOTE: The maximum wire size for TB1 is 2/0.
Fig. 15 — Field Power Wiring Connections
THERMOSTAT ASSEMBLY
REMOVABLE JUMPER
RH RC Y1 Y2
TB2-
R Y1 Y2
J11
1 2 3
Fig. 16 — Field Control Thermostat Wiring
Set heat anticipator settings as follows:
STAGE 1
VOLTAGE
(W1) ON
All 0.15
Settings may be changed slightly to provide a greater degree
of comfort for a particular installation.
X. STEP 10 — INSTALL OUTDOOR-AIR HOOD
Perform the following procedure to install the outdoor-air
hood on units equipped with an economizer, two-position
damper, or manual outdoor air damper:
1. Remove blank panel from return end of unit (hood
section). Save the screws. See Fig. 17 for shipping
location of components.
2. Hood sides are fastened to sides of outdoor air open-
ing. Remove the hood sides and save the screws
(3 each side).
3. Remove the bracket holding the bottom half of the
hood in the shipping position. Remove the hood bot-
tom half and filters (or manual dampers on units so
equipped) from outdoor section.
NOTE: On units without economizers, the compo-
nents are attached to the unit basepan. To access the
components, remove the panel below the outdoor air
intake section.
4. Remove inner filter track from shipping position in
outdoor section. Position inner filter track so the
L
W1 W2 G C X
W1 W2 G C X
4 5 6 7 8
STAGE 1 AND 2
(W1 AND W2) ON
0.30
track is facing outward from the unit. Install the fil-
ter track with 4 screws provided.
5. Apply seal strip (provided) to back flange of both hood
sides where hood side connects to the unit back panel.
See Fig. 18.
6. Apply seal strip (provided) to top flange of both hood
sides where hood sides connect to the hood top pan-
els. See Fig. 18.
7. Install hood sides to the back panels using the screws
from Step 2. The sloped flanges point outward. The
drip edges of the side panels should face outward as
well. Attach the filter guides to the hood sides. The
flanges of the filter guides should face inward to hold
the filters in place. See Fig. 18.
8. Apply seal strip along the entire length of the bottom
flange of the hood top. See Fig. 18.
9. Install the bottom part of the hood top using 4 screws
provided. See Fig. 18.
10. Remove the packaging from filters (3) and install into
the filter tracks. Slide the filters to the sides then
place the last filter into the center of the filter track.
NOTE: For units with manual dampers, replace the
end filters with the manual dampers. Install the filter
in the center between the manual dampers.
11. Install the filter retainer track along the bottom edge
of the outdoor air hood using 4 screws provided. See
Fig. 18.
12. Install top section of the outdoor air hood using
9 screws provided. See Fig. 18. See Fig. 19 for a pic-
ture of the assembled outdoor air hood.
NOTE: For filter removal, remove the four screws holding the
filter retainer. The filters can then be removed, cleaned, or
replaced. Install the filters by reversing the procedure.
A. Manual Damper Assembly
For units equipped with manual dampers, the assembly pro-
cess is similar to the outdoor air hood for units with econo-
mizers. There are two slide dampers shipped with the unit to
allow for manual setting of the outside air volume. When
assembling the hood, place one of the manual slide dampers
in each of the end positions and the remaining filter in the
center position. The manual dampers can then be moved to
the appropriate position and then locked into place using the
screws mounted in the adjustment slots. See Fig. 20.
HOOD TOP
(TOP HALF)
HOOD
SIDE
RETURN AIR
SECTION
Fig. 17 — Outdoor-Air Hood Component
— —
12
HOOD HOOD TOP
SIDE
(BOTTOM HALF)
Shipping Location