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Sie"
(8mm)
(44mm) 4 3/4"
(44mm) 1 Sta
r
Fig. 10 - Leveling Legs
A89014
NOTE:
Bottom closure must be used when leveling legs are
used. It may be necessary to remove and reinstall bottom closure
panel to install leveling legs. To remove bottom closure panel, see
Item 1 in Bottom Return Air Inlet section in Step 1 above.
To install leveling legs:
1. Position
furnace
on its back.
Locate
and
drill a hole in
each bottom corner of furnace. (See Fig.
10.)
. For each leg, install nut on bolt and then install bolt with
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.
5. Reinstall bottom closure panel if removed.
DOWNFLOW
INSTALLATION
NOTE:
For downtlow applications, this furnace is approved for
use on combustible flooring when any one of the following 3
accessories are used:
©
Special Base, KGASB
©
Cased Coil Assembly Part No. CNPV, CNRV, CAP, or
CAR
Coil Box Part No. KCAKC
. Determine application being installed from Table 4.
. Construct hole in floor per Table 4 and Fig. 11.
. Construct plenum to dimensions specified in Table 4 and
Fig. 11.
4. If downtlow subbase, KGASB
is used, install as shown in
Fig. 12. If Coil Assembly
Part No. CPVP,
CAPMP
or
CNPVP
Coil
Box
Part
No.
KCAKC
is used,
install
as
shown in Fig. 13.
NOTE:
It is recommended that the perforated supply-air duct
flanges be completely folded over or removed from furnace when
installing the furnace on a factory-supplied cased coil or coil box.
To remove the supply-air duct flange, use wide duct pliers or
hand seamers to bend flange back and forth until it breaks off. Be
careful of sharp edges. (See Fig. 14.)
Bottom Return Air Inlet
These furnaces are shipped with bottom closure panel installed in
bottom return-air opening. Remove and discard this panel when
bottom
return
air is used.
To
remove
bottom
closure
panel,
perform the following:
1. Tilt or raise furnace and remove 2 screws holding bottom
filler panel. (See Fig. 9.)
. Rotate bottom filler panel downward
to release holding
tabs.
3. Remove bottom closure panel.
4. Reinstall bottom filler panel and screws.
HORIZONTAL INSTALLATION
4
WARNING
FIRE,
EXPLOSION,
AND
CARBON
MONOXIDE
POISONING HAZARD
Failure
to follow
this warning
could
result
in personal
injury, death, or property damage.
Do not install the furnace on its back or hang furnace with
control
compartment
facing
downward.
Safety
control
operation
will
be
adversely
affected.
Never
connect
return-air ducts to the back of the furnace.
The furnace can be installed horizontally in an attic or crawlspace
on either the left-hand (LH) or right-hand (RH) side. The furnace
can be hung from floor joists, rafters or trusses or installed on a
non-combustible platform, blocks, bricks or pad.
Suspended Furnace Support
The furnace may be supported under each end with threaded rod,
angle iron or metal plumber's strap as shown. (See Fig. 15 and
16.)
Secure
angle
iron
to
bottom
of
furnace
as
shown.
Heavy-gauge sheet metal straps (plumber's straps) may be used
to suspend
the furnace
from each bottom
corner.
To prevent
screws from pulling out, use 2 #8 x in. screws into the side and 2
#8 x in. screws in the bottom of the furnace casing for each strap.
(See Fig.
15 and 16.)
If the screws are attached to ONLY the furnace sides and not the
bottom, the straps must be vertical against the furnace sides and
not pull away from the furnace sides, so that the strap attachment
screws are not in tension (are loaded in shear) for reliable support.
Platform Furnace Support
Construct working platform at location where all required furnace
clearances are met. (See Fig. 2 and 17.) For furnaces with 1-in.
(25
mm)
clearance
requirement
on
side,
set
furnace
on
non-combustible blocks, bricks or angle iron. For crawlspace
installations, if the furnace is not suspended from the floor joists,
the ground underneath furnace must be level and the furnace set
on blocks or bricks.
11
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