Introduction - Carrier 58MXA Installation, Start-Up, And Operating Instructions Manual

Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) NFPA
54-1999/ANSI Z223.1-1999 and the Installation Standards, Warm
Air Heating and Air Conditioning Systems (NFPA 90B)
ANSI/NFPA 90B. In Canada, refer to the current edition of the
CAN/CGA-B149.1- and .2-M95 National Standard of Canada,
Natural Gas and Propane Installation Codes (NSCNGPIC). Wear
safety glasses and work gloves. Have a fire extinguisher available
during start-up and adjustment procedures and service calls.
Recognize safety information. This is the safety-alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
⁄
15
26 "
16
⁄
1
26 "
4
⁄
1
24 "
2
⁄
5
22 "
16
2-IN. COMBUSTION-
AIR CONN
⁄
1
-IN. DIA
2
GAS CONN
2-IN. VENT CONN
⁄
1
-IN. DIA THERMOSTAT
2
ENTRY
⁄
11
22 "
16
⁄
14 1 SIDE INLET
"
2
TYP
⁄
1
1 "
4
⁄
1
1" 23 " TYP
4
SIDE INLET
⁄
15
26 " TYP
16
UNIT SIZE
040-08
040-12
060-08
060-12
060-16
080-12
080-16
080-20
100-16
100-20
120-20
140-20
CONDENSATE DRAIN
TRAP LOCATION
(DOWNFLOW &
HORIZONTAL LEFT)
⁄
7
-IN. DIA
8
POWER CONN
⁄
30 13
16
⁄
7
-IN. DIA
8
ACCESSORY
⁄
29 11
"
16
POWER ENTRY
TYP
⁄
27 5
"
8
CONDENSATE
⁄
DRAIN TRAP 27 9
"
16
LOCATION TYP
(ALTERNATE
⁄
1
24 "
2
UPFLOW)
⁄
17 5
"
16
⁄
9 7
"
16
TYP
CONDENSATE
DRAIN LOCATION
(UPFLOW)
NOTES: 1. Minimum return-air openings at furnace, based on metal duct. If flex duct is used,
see flex duct manufacturer's recommendations for equivalent diameters.
2. Minimum return-air opening at furnace:
a. For 800 CFM–16-in. round or 14
b. For 1200 CFM–20-in. round or 14
c. For 1600 CFM–22-in. round or 14
d. For airflow requirements above 1800 CFM, see Air Delivery table in Product Data
literature for specific use of single side inlets. The use of both side inlets, a
combination of 1 side and the bottom, or the bottom only will ensure adequate
return air openings for airflow requirements above 1800 CFM.
DIMENSIONS (IN.)
A
17-1/2
17-1/2
17-1/2
17-1/2
17-1/2
17-1/2
17-1/2
21
21
21
24-1/2
24-1/2
Fig. 2—Dimensional Drawing
Understand these signal words; DANGER, WARNING, and
CAUTION. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation
.
The model 58MXA, Series 141 and 151 furnaces are available in
sizes 40,000 through 138,000 Btuh input capacities.
AIRFLOW
A
⁄
13 D
"
16
OUTLET
⁄
1
33 "
4
TYP
⁄
5
32 "
8
TYP
"
INLET
⁄
11
E
"
16
1 / x 12-in. rectangle.
2
/ x 19 / -in. rectangle.
1 1
2 2
/ x 23 / -in. rectangle.
1 1
2 4
D
15-7/8
15-7/8
15-7/8
15-7/8
15-7/8
15-7/8
15-7/8
19-3/8
19-3/8
19-3/8
22-7/8
22-7/8
2

INTRODUCTION

⁄
9
"
⁄ 16
13
"
16
TYP
CONDENSATE DRAIN
TRAP LOCATION
(DOWNFLOW &
HORIZONTAL RIGHT)
OR ALTERNATE
⁄
1
-IN. DIA GAS CONN
2
⁄
30 1
"
2
⁄
18 1
"
4
CONDENSATE
DRAIN LOCATION
⁄
11
"
16
(UPFLOW)
DIMPLE LOCATORS
FOR HORIZONTAL
HANGING
16
16
16
16
16
16
16
19-1/2
19-1/2
19-1/2
23
23
⁄
28 1
"
2
⁄
26 15
"
16
⁄
26 1
"
4
⁄
22 5
"
16
⁄
13
19" "
16
⁄
5
"
8
OUTLET
2-IN. COMBUSTION-
AIR CONN
⁄
5
"
16
⁄
1 -IN. DIA
2
GAS CONN
⁄
7
-IN. DIA
8
POWER CONN
⁄
1
-IN. DIA
2
THERMOSTAT ENTRY
⁄
7
39 "
8
2-IN. VENT CONN
⁄
11
22 "
16
SIDE INLET
1"
⁄ ⁄
22 1 " TYP 7
"
4 16
⁄ ⁄
3
24 " 11
"
16
16
BOTTOM INLET
A99111
E