If furnace is installed in an unconditioned space where the
ambient temperatures may be 32°F or lower, freeze protection
measures must be taken. (See Fig. 15.) Failure to follow this
caution will result in minor property or unit damage.
Step 2—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 shall be adequate to 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
damper is in full-heat or full-cool position.
Step 3—Hazardous Locations
When furnace is installed in a residential garage, it must be
installed so that burners and ignition sources are located a
minimum of 18 in. above floor. The furnace must be located
or protected to avoid physical damage by vehicles. When
furnace is installed in a public garage, airplane hangar, or
other building having a hazardous atmosphere, the furnace
must be installed in accordance with NFGC or NSCNGPIC.
(See Fig. 16.)
INSTALLATION
Step 1—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.
Step 2—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.
Fig. 15—Freeze Protection
A93058
32°F MINIMUM INSTALLED
AMBIENT OR FREEZE
PROTECTION REQUIRED
Fig. 16—Installation in a Garage
A93044
18-IN. MINIMUM
TO BURNERS
Fig. 17—Leveling Legs
A89014
1
3
⁄4″
1
3
⁄4″
1
3
⁄4″
1
3
⁄4″
5
⁄16″
5
⁄16″
5
⁄16″
5
⁄16″
14
→
To Next Page
Loading...
