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II. FURNACE LOCATION RELATIVE TO COOLING
EQUIPMENT
The cooling coil must be installed parallel with or on downstream
side of furnace to avoid condensation in heat exchanger. When
installed parallel with a furnace, dampers or other means used to
control flow of air must prevent chilled air from entering furnace.
If dampers are manually operated, they must be equipped with a
means to prevent operation of either unit unless the damper is in
full-heat or full-cool position.
III. HAZARDOUS LOCATIONS
Fig. 16—Installation in a Garage
WARNING: When the furnace is installed in a residen-
tial garage, the burners and ignition sources must be
located at least 18 in. above the floor. The furnace must
be located or protected to avoid physical damage by
vehicles. When the furnace is installed in a public garage,
airplane hangar, or other building having a hazardous
atmosphere, the furnace must be installed in accordance
with the National Fire Protection Association, Inc. re-
quirements. (See Fig. 16.)
INSTALLATION
I. LEVELING LEGS (IF DESIRED)
When furnace is used in upflow position with side inlet(s), leveling
legs may be desired. (See Fig. 17.) Install field-supplied,
corrosion-resistant 5/16-in. machine bolts and nuts.
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. KGASB0201 ALL 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.
18-IN. MINIMUM
TO BURNERS
A93044
"
5
⁄
16
3
1
⁄
4
5
⁄
16
Fig. 18—Floor and Plenum Opening Dimensions
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. 21.
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.)
—13—
"
5
⁄
16
"
"
3
1
⁄
4
"
"
5
⁄
16
"
3
1
⁄
4
"
3
1
⁄
4
Fig. 17—Leveling Legs
A
PLENUM
OPENING
B
D
FLOOR
OPENING
C
A89014
A96283
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