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58TP0B/58TP1B: Installation, Start-up, Operating and Service and Maintenance Instructions
Side Return Air Inlet
These furnaces are shipped with bottom closure panel installed in bottom
return-air opening. This panel MUST be in place when only side return
air is used.
NOTE: Side return-air openings can be used in UPFLOW and most
HORIZONTAL configurations. Do not use side return-air openings in
DOWNFLOW configuration.
Leveling Legs (If Desired)
In upflow position with side return inlet(s), leveling legs may be used.
(See
Fig.
10). Install field-supplied, 5/16 X 1-1/2 in. (8 X 38 mm) (max)
corrosion-resistant machine bolts, washers and nuts.
Fig. 10 – Leveling Legs
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.
2. 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
CAUTION
!
EQUIPMENT OR PROPERTY DAMAGE
Failure to follow this caution could result in equipment or property
damage
When furnace is installed in a downflow application, make sure water
lines and other sources of water cannot drip or fail in such a way that
water can collect on the blower motor, wiring, and furnace control
board.
NOTE: For downflow applications, this furnace is approved for use on
combustible flooring when any one of the following 3 accessories are
used:
• Manufacturer's approved downflow combustible floor subbase
• Manufacturer's approved cased evaporator coil
• Manufacturer's approved evaporator coil casing
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
10).
1. Determine application being installed from
2. Construct hole in floor, see
3. Construct plenum to dimensions specified, see
4. If downflow subbase is used, install as shown, see
manufacturer's cased evaporator coil or coil casing is used, install
as shown in, see
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.
(Refer to Duct Flanges
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.
2. Rotate bottom filler panel downward to release holding tabs.
3. Remove bottom closure panel.
4. Reinstall bottom filler panel and screws.
A89014
Fig. 11 – Floor and Plenum Opening Dimensions
Fig. 12 – Furnace, Plenum, and Subbase Installed on a Combustible
10
Table
Table 4
and
Fig.
11.
Table 4
Fig.
13.
(Fig.
17) in the "Air Ducts" section.)
9).
Floor
4.
and
Fig.
11.
Fig.
12. If
A96283
A96285
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