Installation In Upflow And Downflow Applications; Installation In Horizontal Applications - Bryant 352MAV Installation, Start-Up, And Operating Instructions Manual

"
5
⁄
16
5
⁄
"
3
1 ⁄
4
"
5
⁄
16
"
3
1 ⁄
4
3
1 ⁄
4
Fig. 17—Leveling Legs
NOTE: The maximum length of bolt should not exceed 1-1/2 in.
1. Position furnace on its back. Locate and drill a 5/16-in.
diameter hole in each bottom corner of furnace. (See Fig.
17.) Holes in bottom closure panel may be used as guide
locations.
2. For each hole, install nut on bolt and then install bolt and
nut in hole. (Install flat washer if desired.)
3. Install another nut on other side of furnace base. (Install flat
washer if desired.)
4. Adjust outside nut to provide desired height, and tighten
inside nut to secure arrangement.
NOTE: Bottom closure must be used when leveling legs are used.
See Bottom Closure Panel section.
II. INSTALLATION IN UPFLOW AND DOWNFLOW
APPLICATIONS
NOTE: For downflow applications, this furnace is approved for
use on combustible flooring when special base (available from
manufacturer) Part No. KGASB0201ALL is used. Special base is
not required when this furnace is installed on manufacturer's Coil
Assembly Part No. CD5 or CK5, or Coil Box Part No. KCAKC is
used.
1. Determine application being installed from Table 1.
2. Construct hole in floor per dimensions specified in Table 1
and Fig. 18.
3. Construct plenum to dimensions specified in Table 1 and
Fig. 18.
4. If downflow subbase (KGASB) is used, install as shown in
Fig. 19. If Coil Assembly Part No. CD5 or CK5 or Coil Box
Part No. KCAKC is used, install as shown in Fig. 20.
NOTE: Remove furnace perforated, supply-air duct flanges when
they interfere with mating flanges on coil or downflow subbase. To
remove perforated, supply-air duct flanges, use wide duct pliers,
duct flange tool, or hand seamers to bend flange back and forth
until it breaks off. Be careful of sharp edges. (See Fig. 21.)
"
16
"
3
1 ⁄
4
"
5
⁄
16
"
A89014
Fig. 18—Floor and Plenum Opening Dimensions
Fig. 19—Furnace, Plenum, and Subbase Installed
WARNING: Do not bend duct flanges inward as shown
in Fig. 21. This will affect airflow across heat exchangers
and may cause limit cycling or premature heat exchanger
failure. Remove duct flange completely or bend it inward
a minimum of 210°F as shown in Fig. 21.
III. INSTALLATION IN HORIZONTAL APPLICATIONS
These furnaces can be installed horizontally in either horizontal
left or right discharge position. In a crawlspace, the furnace can
—14—
A
PLENUM
OPENING
B D
FLOOR
OPENING
C
FURNACE
(OR COIL CASING
WHEN USED)
COMBUSTIBLE
FLOORING
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
on a Combustible Floor
A96283
A96285