Installation; Leveling Legs (If Desired); Installation In Upflow And Downflow Applications - Carrier 58MSA Installation, Start-Up, And Operating Instructions Manual

DUCTS
TO
OUTDOORS
12" MAX
1 SQ IN.
PER 2000 B
BTUH*
DUCTS
TO
OUTDOORS
1 SQ IN.
PER 2000
A
BTUH*
12" MAX
CIRCULATING AIR DUCTS
*Minimum dimensions of 3 in.
NOTE: Use any of the following
combinations of openings:
A & B C & D D & E
→
Fig. 17—Air for Combustion, Ventilation, and Dilution
for Outdoors

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. 19.) 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.
"
5
⁄
16
"
3
1 ⁄
4
"
5
⁄
16
3
1 ⁄
1
Fig. 19—Leveling Legs
1 SQ IN.
PER 4000
BTUH*
D
12"
MAX
VENT
THROUGH
F
ROOF
1 SQ IN.
PER
4000
BTUH*
1 SQ IN.
PER
4000
BTUH*
E
G
12"
MAX
C
12" MAX
DUCT
1 SQ IN.
TO
PER 4000
OUTDOORS
BTUH*
F & G
"
5
⁄
16
"
3
1 ⁄
4
"
5
⁄
16
"
4
"
3
⁄
4
CIRULATING AIR
INTERIOR
HEATED
SPACE
CIRCULATING AIR DUCTS
* Minimum opening size is 100 sq in. with
minimum dimensions of 3 in.
†
Minimum of 3 in. when type-B1 vent is used.
A03174
→ Fig. 18—Air for Combustion, Ventilation, and Di-
1. Position furnace on its back. Locate and drill a 5/16-in.
diameter hole in each bottom corner of furnace. (See Fig. 19.)
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 in
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 3.
2. Construct hole in floor per dimensions specified in Table 3
and Fig. 20.
3. Construct plenum to dimensions specified in Table 1 and Fig.
20.
4. If downflow subbase (KGASB) is used, install as shown in
Fig. 21.
A89014 If Coil Assembly Part No. CD5 or CK5 or Coil Box Part No.
KCAKC is used, install as shown in Fig. 22.
17
VENT THROUGH ROOF
DUCTS
lution from Indoors
12" MAX
1 SQ IN.
PER 1000
BTUH * IN DOOR
OR WALL
UNCONFINED
SPACE
6" MIN
†
(FRONT)
1 SQ IN.
PER 1000
BTUH * IN DOOR
OR WALL
12" MAX
A03175