Carrier 40FS - Manual (Page 5)

Set filter section on top of coil section with
filter flanges overlapping coil flanges. Drill 1/8-in.
holes thru coil and filter flanges, and fasten
together with sheet metal screws provided. Do not
drill into filter support rack. See Fig. 6.
Remove fan section access panel. Turn access
panel so Carrier nameplate is in upright position
and replace panel on fan section.
An accessory cooling control kit is required for
208-230-volt upflow, horizontal or downflow
cooling units described above. See cooling control
kit installation. An accessory humidity control
package is required for use with the 28TQ coil in
2-speed applications. See 28TQ installation data.
HEATING AND COOLING UNIT ASSEMBLY
— Attach electric heater to fan section as described
under Heating Unit Assembly. However, before
attaching filter section, proceed as follows:
Upflow and Horizontal Heating/Cooling Units —
Position heating unit assembly (Fig. 2, 3) for
upflow air direction and coil in upright position as
shown in Fig. 5 and 7. Set heating unit assembly
on top of cooling coil casing. Attach heating unit
assembly to coil casing with 5 no. 10 hex head sheet
metal screws provided. Clearance holes for screws
are provided on each side (2) and back (1) of fan
section, and engagement holes in side and back of
coil casing. (Drill engagement holes as required).
Before attaching filter section to air inlet (return)
end of coil casing: remove return air duct flange
from coil casing. Be sure to install secondary con­
densate tray with lip over edge of condensate pan
(28HQ only). The filter section can be mounted
with its 5/8-in. duct connection flanges inside or
outside of coil casing. Filter section is held in place
with 4 screws and speed nuts provided (Fig. 6).
Engagement holes for screws are provided by speed
nuts on each side of coil casing. Drill engagement
holes in each side of coil casing as required.
Use cooling and heating unit as assembled above
for horizontal airflow. To position unit for hori­
zontal airflow, place unit on its right side by turning
it clockwise 90°.
Downflow, Heating/Cooling Unit —^ When
40FS916320, or 40FS916500EH, GM, or HV
heaters are used in this assembly, install accessory
downflow support angles 40FS900241 to support
fan section/coil weight as described on page 3. Turn
fan section/electric heater assembly (Fig. 2, 3) over
so fan discharges downward thru electric heater.
Remove return air duct flange from coil casing.
UPFLOW
airflow direction
HORIZONTAL DOWNFLOW
*ALL HEATER MODELS EXCEPT 40FS9I6320,40FS9I6330 AND 40FS9I6500 LW AND PA. SEE FIG. 3
Fig. 2 — Heating Unit Assembly