Horizontal Installation - Carrier 58SU0A Installation, Start-Up, Operating And Service And Maintenance Instructions

FURNACE
(OR COIL CASING
WHEN USED)
COMBUSTIBLE
FLOORING
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
Fig. 12 − Furnace, Plenum, and Subbase Installed
on a Combustible Floor
FURNACE
CASING
WIDTH
Upflow Applications on Combustible or Noncombustible Floor­
Downflow Applications on Noncombustible Flooring (KGASB
17–1/2
Downflow applications on combustible flooring (KGASB sub­
(445)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
Upflow Applications on Combustible or Noncombustible Floor­
Downflow Applications on Noncombustible Flooring (KGASB
21
Downflow applications on combustible flooring (KGASB sub­
(533)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box

HORIZONTAL INSTALLATION

WARNING
!
FIRE, EXPLOSION, AND CARBON MONOXIDE
POISONING HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
Do not install the furnace on its back or hang furnace with
control compartment facing downward.
operation will be adversely affected.
return−air ducts to the back of the furnace.
A96285
Table 4 – Opening Dimensions − In. (mm)
APPLICATION
ing (KGASB subbase not required)
subbase not required)
base required)
(KGASB subbase not required)
ing (KGASB subbase not required)
subbase not required)
base required)
(KGASB subbase not required)
Safety control
Never connect
COIL ASSEMBLY
Fig. 13 − Furnace, Plenum, and Coil Assembly or
Coil Box Installed on a Combustible Floor
PLENUM OPENING
A
16
(406)
15-7/8
(403)
15-1/8
(384)
15-1/2
(394)
19-1/2
(495)
19-3/8
(492)
18-5/8
(473)
19
(483)
The furnace can be installed horizontally in an attic or crawl space
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 3/4−in. (19 mm) screws into
the side and 2 #8 x 3/4−in. (19 mm) 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
11
FURNACE
APPROVED
OR
COIL BOX
COMBUSTIBLE
FLOORING
SHEET METAL
PLENUM
FLOOR
OPENING
FLOOR OPENING
B C
21-5/8 16-5/8
(549) (422)
19 16-1/2
(483) (419)
19 16-3/4
(483) (425)
19 16-1/2
(483) (419)
21-5/8 20-1/8
(549) (511)
19 20
(483) (508)
19 20-1/4
(483) (514)
19 20
(483) (508)
A08556
D
22-1/4
(565)
19-5/8
(498)
20-5/8
(600)
20
(508)
22-1/4
(565)
19-5/8
(498)
20-5/8
(600)
20
(508)