Carrier 50TFF008-014 - Typical Access Panel Locations; Exhaust Air Hood Assembly; Return Air Block-Off Plate Installation; Outdoor Air Hood Assembly

16
3. Install the
3
/
4
x
3
/
4
in. seal strip on the exhaust air hood
top panel. Install the
1
/
8
x
7
/
8
in. seal strip on the exhaust
air hood side panels and bottom brackets. Assemble the
exhaust air hood to the outdoor air opening panel as
shown in Fig. 31, using the screws provided. Do not at-
tach hood assembly to unit at this time.
4. Install the
1
/
8
x
7
/
8
in. seal strip on the outdoor air hood
top and side panels. Assemble the outdoor air hood to the
outdoor air opening panel as shown in Fig. 32, using the
screws provided. Do not attach hood assembly to the unit
as this time.
5. Slide the outdoor air inlet screens into the screen track on
the hood side panels. While holding the screens in place,
fasten the screen retainer to the hood using the screws
provided. Repeat the process for the barometric exhaust
air screen. Do not attach hood assembly (Fig. 33) to unit
at this time.
6. For size 008 and 009 units, remove the factory-installed
block-off plate. See Fig. 34.
7. Slide the EconoMi$er assembly into the rooftop unit. See
Fig. 35 and 36.
NOTE: Be sure to engage rear EconoMi$er flange under tabs
in return air opening of the unit base. See Fig. 35.
8. Install the outdoor air block-off plate, then secure the
EconoMi$er with the screws provided. See Fig. 36.
9. Remove and store the jumper plug from the unit wiring
harness located in the upper left corner and insert the
EconoMi$er plug into the unit wiring harness. See
Fig. 37.
NOTE: If optional power exhaust is being installed, complete
installation of power exhaust at this time. See Fig. 38 for
wiring.
10. Install the complete hood assembly on the unit and secure
using the screws provided.
11. Remove the indoor fan motor access panel.
12. Mount the supply air temperature sensor to the lower left
portion of the indoor blower housing with the two (2)
screws provided (see Fig. 39). Connect the violet and
pink wires to the corresponding connections on the sup-
ply air temperature sensor. Replace the indoor fan motor
access panel.
CO
2
Control Set Up — If a CO
2
sensor is not being used, pro-
ceed to the next section. If a CO
2
sensor is being used, perform
the following:
1. Determine the value at which you want the minimum
position of the dampers to begin opening to allow a great-
er amount of outdoor air to enter. The range is 800 to
1,400 ppm.
2. Locate the CO
2
SP (PPM) potentiometer and adjust to the
desired set point. See Fig. 40.
FILTER
ACCESS
PANEL
INDOOR
COIL
ACCESS
PANEL
Fig. 30 — Typical Access Panel Locations
OUTDOOR AIR
OPENING PANEL
SEAL STRIP
EXHAUST AIR SCREEN
EXHAUST AIR
HOOD TOP
SCREEN
RETAINER
EXHAUST AIR
HOOD SIDES
EXHAUST AIR
BOTTOM BRACKET
1/8 x 7/8 IN.
3/4 x 3/4 IN.
SEAL STRIP
Fig. 31 — Exhaust Air Hood Assembly
SEAL STRIP
SEAL STRIP
OUTDOOR AIR
HOOD TOP
SCREEN
RETAINER
OUTDOOR AIR
INLET
SCREENS
OUTDOOR AIR
HOOD SIDES
ASSEMBLED
EXHAUST HOOD
OUTDOOR AIR
OPENING
PANEL
1/8 x 7/8 IN.
1/8 x 7/8 IN.
Fig. 32 — Outdoor Air Hood Assembly
BLOWER
FILTER
RETURN AIR
BLOCK-OFF
PLATE
INSTALL
REMOVE FACTORY INSTALLED
BLOCK-OFF PLATE
(SIZE 008 AND 009 UNITS ONLY)
Fig. 34 — Return Air Block-Off Plate Installation
Fig. 33 — Completed Hood Assembly