Carrier 40FS - Manual (Page 4)

and rubber grommet positions in top flange deck to
accommodate heater fan leads. Install door air seal
strip on fan deck along front edge of heater.
Electric Heater Models 40FS916500LW. and PA
used with Fan Sections 40FS200 and 40FS220 —
Position fan section for upflow air direction.
Assemble flange deck according to instructions
shipped with accessory. Mount heater on fan section
supply air duct connection flanges; attach with 3
no. 8-32 self-threading screws and bracket provided
as shown in Fig. 3.
On all heating unit assemblies, attach filter
section to air inlet (return) end of fan section. The
filter section can be mounted with its 5/8-in. duct
connection flanges inside or outside of fan section.
Filter section is held in place with 4 screws and speed
nuts provided. See Fig. 6. Clearance holes for
screws are provided on each side of filter section.
Speed nuts provide engagement holes on each side
of fan section.
To position heating unit for horizontal airflow,
simply place assembled unit on either left or right
side with access panels at front. Position Model
40FS075 horizontally only with the motor above
the scroll as shown in Fig. 4.
For a downflow heating unit, turn assembled unit
over so fan discharges downward thru electric
heater. Remove fan section access panel. Turn
access panel so Carrier nameplate is in upright
position and replace panel on fan section.
CAU’IION: The electric heater modeK
4ii! II. (I\l. Il\ and 401
are appro\ed for downflow but w ill not support
fan section weight. When assembled unit is used
in downlliiw piisilmn. iiiNtall aCi.eNMii\ i | h \ m ;-
llow Niippuri ;ingle' li)l b‘J0l).14l tiisiippoii Ian
weight as describeil in Downllow Support
.Angles below.
Downflow Support Angles
1. Position fan-heater combination for upflow
arrangement (Fig. 3). Remove screws (4) secur­
ing fan cover; remove and set aside cover.
2. Remove tie angle. Save screws “A” (2).
3. Install accessory fan deck filler panels as de­
scribed in instructions shipped with accessory.
Assembly is similar to filler panels on accessory
cooling control kit. See Step 6 and Fig. 11.
4. Position support angles on fan section as shown
in Fig. 11. Reinstall screws “A” securing support
angles and flange deck to fan wrapper.
5. Using screws “B” supplied, attach each angle to
corresponding fan side flange. Holes in side
flanges are clearance holes.
6. Using remaining hole in each angle as a guide
drill a .128 in. diameter hole in front flange of
flange deck. Install screws “C” (supplied) in
these holes to attach angles to front flange.
NOTE: All 3 screws are required in each angle
for proper unit stability.
7. Using the 4 screws removed in step 1, reattach
fan cover so that Carrier nameplate is upside
down. Fan-heater assembly is now ready to be
inverted so that when installed in final loca­
tion, nameplate will be right-side up.
The electric heater is equipped with heating
controls as described in Modular System Intro­
duction. See Electrical Data and Wiring for wiring
details.
COOLING UNIT ASSEMBLY — Be sure 28 Series
coil is assembled in recommended airflow position;
DRAW-THRU AIRFLOW
Upflow Downflow Horizontal
28TQ.28VQ,
28TQ.28VQ
28HQ,28QX,
28QX.28VH 28TQ,28VH
Coil casing on most models has sheet metal screw
engagement holes for assembly to fan section.
When engagement holes are not provided, carefully
drill holes where required.
Upflow and Horizontal Cooling Unit — Position
fan section for upflow air direction and coil in
upright position as shown in Fig. 4, page 6. Set fan
section on top of cooling coil casing. Attach fan
section 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 sides 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). Engage­
ment 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 unit as assembled above for hori­
zontal airflow. To position unit for horizontal
airflow, place unit on its right side by turning it
clockwise 90°.
Downflow Cooling Unit — Install as accessory
downflow base under fan section to provide a
“firebreak” in accordance with UL requirements.
This base, which is a heater enclosure with no
heating components in it, is shown in Fig. 4. Install
base in the same manner as the heater as described
previously in Heating Unit Assembly. Also see
Fig. 2. The bases are used as follows;
FAN SECTION USES BASE
40FS160300 40FS900220
40FS200300 40FS900230
40FS220300 40FS900230
Turn fan section (only) over so fan discharges
downward. Remove return air duct flange from
coil casing. Place coil, in an upright position, on air
inlet end (top) of fan section. Attach coil casing to
fan section with 4 no. 10 hex head sheet metal
screws provided. Clearance holes for screws are
provided in each side of fan section and engage­
ment holes on sides of coil casing. (Drill engage­
ment holes as required).