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18-1N. MINIMUM
TO BURNERS
Fig. 16--Installation
in a Garage
A93044
-->
1¾"
1 ¾%,
A89014
Fig. 17--Leveling
Legs
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 fhmace
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--hstallation
in Upf!ow
or Downflow
Applications
NOTE:
For downflow
applications,
this furnace
is approved
for
use
on combustible
flooring
when
special
base
(available
from
manufacturer)
Paint No. KGASB020IALL
is used.
Special
base in
not required
when this J_ilrnace is installed
on manu_hcmrer's
(Toil
Assembly
Part No. CD5 or CK5, or (oil Box Part No. K(AK(
is
used,
1. Detem_ine
application
being
installed
from
Table
1.
15
2
Construct
hole in floor
per dimensions
specified
in Table
1
and Fig. 18.
3. (onstruct
plenum
to dimensions
specified
in Table
1 and Fig.
18.
4. If downflow
subbase
(KGASB)
is used,
install
as shown
in
Fig. 19.
If (oil
Asserubly
Part No. CD5 or CK5 or (oil
Box Part No.
KCAKC
is used,
install
as shown
in Fig. 20.
NOTE:
Remove
Nmace
peKbrated,
discharge
duct flanges
when
they interfere
with mating
flanges
on coil on downflow
subbase.
To remove
fi/mace
perforated,
discharge
duct flange,
use wide
duct pliers or dtlct flange
tool or hand seamers
to bend flange back
and forth until it breaks
off, Be careNt
of sharp
edges.
(See Fig.
21.)
INIT
MAY
NOT
OPERATE
Failure
to %ltow
this caution
may result
in intem_ittent
unit
operation.
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
_hilure.
Remove
duct
flange
completely
or bend
it inward
a minimum
of 210 ° as
shown
in Fig
2!
NOTE:
For 140 size unit when installed
in downflow
orientation,
cut the white jumper
wire offbetween
tem_inals
PL1 =7 and PLI=9.
Do not cut white
jumper
between
terminals
PLI=7
and PL!-I
1.
Refer
to Fig
30 %r location
of jumper.
Cut jumper
close
to
connector
and remove
wire to avoid
a short circuit
Step
a--installation
in Horizontal
Applications
INIT
MAY
NOT
OPERATE
Failure
to %ltow
this caution
may result
in intem_ittent
unit
operation.
The
entire
length
of _/mace
MUST
be
supported
when
furnace
is used
in a horizontal
position
to ensure
proper
&aining.
When
suspended,
bottom
brace
supports
sides and
center blower
shelf
When unit is supported
fiom the ground,
blocks
or pad should
support
sides and center
blower
shelf
area.
These
t'umaces
can be installed
horizontally
in either
horizontal
left or right discharge
position.
In a crawlspace,
fitmace
can either
be hung
from
floor
joist
or installed
on suitable
blocks
or pad.
Furnace
can be suspended
from
each corner
by hanger
bolts
and
angle iron supports.
(See Fig. 22) (ut
hanger bolts (4 each 3/8=in.
all-thread
rod)
to desired
length
Use
1 X 3/8-in.
flat washers,
3/8=in
tockwashers,
and 3/8=in. nuts on hanger
rods as shown
in
Fig
22. Dimples
are provided
for hole locations
(See Fig. 2)
Step 8--AIR
DUCTS
GENERAL REQUIREMENTS
The duct system should be designed
and sized according
to
accepted
national
standards
such as those published
by: Air
Conditioning
(ontractors
Association (A(CA),
Sheet Metal and
Air Conditioning Contractors National Association (SMACNA) or
American Society of Heating, Refrigerating and Air Conditioning
Engineers (ASHRAE) or consult :FiveAit' 5)'stems' Desigr* Gz¢ide-
[i_ve,sreference rabies available fi'om your local distributor.
The
duct system should be sized to handle the required system design
CFM at the design static pressure.
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