Carrier GAS FURNACE 58MXA Operation manual

Copyright 2000 Carrier Corporation Form 58MXA-9PD
Product
Data
58MXA
Highly-Efficient 4-Way Multipoise
Fixed-Capacity Direct-Vent
Deluxe Condensing Gas Furnace
Series 140 & 150
Input Capacities: 40,000 thru 138,000 Btuh
4-Way Multipoise Design
Allows More Applications . . .
Themodel58MXAisamustforyour
product line. This high-efficiency
furnace allows more applications with
its reliable 4-way multipoise design.
The model 58MXA is available in 12
heat/airflow combinations and with the
4-way multipoise design can be
installed in upflow, downflow, or
horizontal positions covering up to 48
different applications. With the
exception of the 140 size unit, all
58MXA models can be installed in a
manufactured (mobile) home when the
optional kit is used. The furnace is
factory configured for upflow
application.
Thisversatile unit utilizes hotsurface
ignition (HSI) which ignites the burners
directly. HSI eliminates gas waste that
typical continuous-pilot designs can
bring. Hot surface ignition provides
reliable start-up and operation.
Take a look at the control center on
model 58MXA. Control of ignition,
inducer, and blower operation is all
handled in 1 central printed circuit
board. The status indicator on the
control signals when a fault has
occurred and identifies where the
problem is. This, along with the
component test feature, makes the
58MXA one of the easiest gas furnaces
to troubleshoot.
High efficiency is achieved by
maximizing heat transfer. The model
58MXA uses 100 percent outdoor air
for combustion in a sealed-combustion
system. The result is energy-saving
efficiency, up to 95.5 percent (Pg. 12)
Annual Fuel Utilization Efficiency
(AFUE),andreduced operationalnoise.
The model 58MXA is one of the
quietest furnaces in the industry.
A unique feature of this unit is the
patented polypropylene-laminated
heat exchanger. This secondary heat
®
• • • • • •• • • • • • • • •
ULTRA HIGH EFFICIENCY
GASFURNANCE
®

2
exchanger ensures that all available heat
is properly transferred to the airstream
and throughout the home. Using the
exclusive flow-through design, the
secondary heat exchanger reduces the
pressure drop in the furnace which leads
to lower electrical usage, an important
part of this unit’s efficiency. Carrier heat
exchangers are backed by a Limited
Lifetime Warranty. (See Warranties
section for details.)
Whenwe put italltogether, the model
58MXA combines quality and design to
bring high efficiency and comfort. You
will enjoy the versatility and ease of
installation of this unit. The model
58MXA is equipped for either left- or
right-side connections. Blower speeds
are easily adjustable with speed-taps
conveniently located on the control
center. An updated, more efficient
combustion inducer allows for more use
of 2-in. vent and combustion-air piping,
keeping installation costs low.
As with other Carrier furnaces, this
modelisdesigned toworkas apartofthe
total home comfort system which
includes elements for cooling, air
cleaning, humidification, ventilation,
and zoning.
58MXA FEATURES/
BENEFITS
Casing — One piece, seamless
wrap-around construction of heavy,
galvanized steel resists corrosion.
Media Filter Cabinet — Enhanced
indoor air quality in your home is made
easier with our media filter cabinet—a
standard accessory on all Deluxe
furnaces.Wheninstalledasapartofyour
system, this cabinet allows for easy and
convenient addition of a Carrier high-
efficiency air filter.
Insulated Blower Compartment —
The acoustical insulation reduces air and
motor noise to promote quiet operation.
Certifications — The 58MXA units
are A.G.A. and C.G.A. design certified
for use with natural and propane gases.
The furnace is factory-shipped for use
with natural gas. An A.G.A./C.G.A.
listed gas conversion kit is required to
convert furnace for use with propane
gas. The efficiency is GAMA
efficiency rating certified. The 58MXA
meets California Air Quality
Management District emission
requirements. Except for the 140 size
unit, all 58MXA models can be
installed in a manufactured (mobile)
home when the optional kit is used.
Warranties — Limited Lifetime
Warranty on the heat exchangers for the
lifetime of original owner in single
family residence; 20 years in other
residential and commercial applications.
Three-year Limited Warranty on
microprocessor control, HSI, and
inducer motor. One year Limited
Warranty on entire unit. Contact your
dealer for details.
Combustion Products Venting —
The combustion-air and vent pipes can
terminate through a side wall or
through the roof when used with a
factory-authorized vent termination kit.
Blower Access Panel Switch — Shuts
off all 115-v power through furnace
components whenever blower access
panel is opened.
Hot Surface Ignitor — No pilot flame
to waste gas or cause problems.
Slow Opening Redundant Gas Valve
— Shuts off gas to burners if 1 of the
valves fails to close completely for any
reason. The slow opening feature reduces
start-up noise from rapid ignition.
Quality Registration — The 58MXA
is engineered and manufactured under an
ISO 9001 registered quality system.
Insulation — Foil-faced insulation in
heat exchanger section of the casing
minimizes heat loss.
Control Center — Microprocessor
controls sequencing and furnace
operation. Equipped with a component
test feature and status indicator light
to assist in troubleshooting. Selectable
micro-processor blower control times
blower start after main burners ignite
to eliminate cold air blowing into rooms.
Adjustable Blower Speed — For
precise airflow selection of heating or
cooling operation.
Direct-Vent Sealed Combustion
System
— Model 58MXA uses 100
percent outdoor air, which results in
especially quiet operation. Direct
venting minimizes the possibility of
chloride contamination which can result
in heat exchanger corrosion. Direct
venting also reduces air infiltration into
the home.
Monoport Burners — The burners
are finely tuned for smooth, quiet
combustion plus economical gas usage.
Serpentuff
TM
— Exclusive Serpentuff
coating, a patented polypropylene
laminate is used on the secondary heat
exchanger.
Bottom Closure — Factory-installed
for side return; easily removable for
bottom return.
Filter — Cleanable filter with retainer
is standard.
A92505
HEAT EXCHANGERS
32615
TEST
LED
1
SW1
BLOWER
OFF DELAY
P5
HUM C W Y R G
SEC-1 SEC-2
3
COOL SPARE-1
HEAT SPARE-2
9404
L2
PR2
COM
P3
P2
PR1L1
HUM COM
24V WYRG
21
231 F
U
S E
3
A
S
T
A
T
U
S
T
E S
T
S E
C
1
E A
C
2
E A
C
1
C
O
M
P
R
2
L 2
S E
C
2
PL1
HUM CWYRG
BLOWER-OFF
DELAY
SWITCH SETTING SERVICE
22518013590
UNITED TECHNOLOGIES ELECTRONIC CONTROLS HUNTINGTON, IN 46750
1012-940 MODEL HK42FZ011
CAN/CSA - C22.2 NO. 199-M89 ANSI Z21.20 - 1993 INPUT - 24VAC, 465 mA, 60Hz
FURNACE CONTROL
FOR USE WITH ALL GASES
WARNING
PL2HS1
L 1
P
R
1
P
L 3I
N D
LINE
VOLTAGE
120 VAC
369 258 147
SEE SEPARATE LED STATUS CODE LABEL FOR INSTRUCTIONS ON CONDUCTING COMPONENT TEST AND READING STATUS CODES FROM LED.
LINE VOLTAGE
NEUTRAL
HEAT
SPARE
2SPARE
1
BLOWER
MOTOR
COOL
A94151
CONTROL CENTER
A94152
INDUCER ASSEMBLY

3
NOTES:
1. The 58MXA Furnaces are for use with natural gas, but can be field converted for propane gas with a factory-authorized
and listed accessory conversion kit.
2. Component location and configuration may be different than shown above.
A98292
12
11
6
8
10
9
7
6
4
5
2
113
14
18
3
15
16
17
19
Burner sight glass for viewing burner flame.
Burner assembly (inside), operates with energy-
saving, inshot burners and hot surface ignitor for
safe, dependable heating.
Combustion-air intake connection to ensure
contaminant-free air (right or left side).
Redundant gas valve, safe, efficient, features 1
gas control with 2 internal shutoff valves.
Junction box for 115-v electrical power supply.
Vent outlet uses sealed PVC pipe to carry vent
gases from the furnace’s combustion system
(right or left side).
Secondary condensing heat exchanger (inside),
wrings out more heat through condensation of
gases. Constructed with Polypropylene-
laminated steel to ensure durability.
Pressure switch ensures adequate flow of flue
products through furnace and out vent system.
Inducer motor pulls hot flue gases through the
heat exchangers, maintaining negative pressure
for added safety.
Condensate drain connection collects moisture
condensed during the combustion process.
1
2
3
4
5
6
7
8
9
10
Heavy-duty blower circulates air across the heat
exchangers to transfer heat into the
home.
Air filter and retainer may be used for side return
application.
Rollout switch (manual reset) to prevent
overtemperature in burner area.
Primary serpentine heat exchanger (inside).
Stretchesfueldollars withtheS-shaped heat-flow
design. Solid weld-free construction of corrosion-
resistant aluminized steel means reliability.
3-amp fuse provides electrical and component
protection.
Light emitting diode (LED) on control center.
Code lights are for diagnosing furnace operation
and service requirements.
Control center.
Blower access panel safety interlock switch.
Transformer (24v) behind control center
provides low-voltage power to furnace control
center and thermostat.
11
12
13
14
15
16
17
18
19

4
Model number nomenclature
58MXA 040
Deluxe 4-Way Multipoise Fixed-Capacity
Direct-Vent Condensing Gas Furnace
Input Capacity
040 —40,000 Btuh 100 —100,000 Btuh
060 —60,000 Btuh 120 —120,000 Btuh
080 —80,000 Btuh 140 —138,000 Btuh
140 08
Cooling Airflow
(Nominal 400 CFM per
12,000 Btuh Cooling)
08 —800 CFM
12 —1200 CFM
16 —1600 CFM
20 —2000 CFM
Series
ama
CERTIFIED
REGISTERED QUALITY SYSTEM
MEETS DOE RESIDENTIAL
CONSERVATION SERVICES
PROGRAM STANDARDS
Before purchasing this appliance,
read important energy cost and
efficiency information available
from your retailer.
As an ENERGY STAR
®
Partner, Carrier
Corporation has
determined that this
product meets the
ENERGY STAR
®
guidelines for energy
efficiency.
These products are engineered and
manufactured under an ISO 9001 registered
quality system.

5
Physical data
* Capacity in accordance with U.S. Government DOE test procedures.
†Gas input ratings are certified for elevations to 2000 ft. For elevations above 2000 ft, reduce ratings 2% for each 1000 ft above sea level. In Can-
ada, derate the unit 5% for elevations 2000 to 4500 ft above sea level.
‡•Airflow shown is for bottom only return-air supply with factory supplied 1-in. washable filter(s).
•For air delivery above 1800 CFM, see Air Delivery table for other options.
•An airflow reduction of up to 7% may occur when using the factory-specified 4 5/16-inch wide, high efficiency media filter.
•For best furnace efficiency when using the 4 5/16-inch wide media filter, adjust the blower speed tap to near the mid-point of the rise range.
ICS—Isolated Combustion System;
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
OUTPUT CAPACITY BTUH* (ICS) Upflow
38,000 38,000 56,000 56,000 56,000 75,000 75,000 75,000 94,000 94,000 113,000 129,000
(Shaded capacities are) Downflow 38,000 38,000 56,000 56,000 56,000 75,000 75,000 75,000 94,000 94,000 113,000 129,000
specified on rating plate) Horizontal 38,000 38,000 56,000 56,000 56,000 74,000 75,000 75,000 93,000 93,000 112,000 128,000
INPUT BTUH† 40,000 40,000 60,000 60,000 60,000 80,000 80,000 80,000 100,000100,000 120,000 138,000
SHIPPING WEIGHT (Lb) 149 152 156 163 166 172 175 197 193 196 252 252
CERTIFIED TEMP RISE RANGE (°F) 30—60 15—45 45—75 30—60 20—50 40—70 30—60 20—50 45—75 30—60 40—70 50—80
CERTIFIED EXT STATIC PRESSURE
(In. wc)
Heating 0.10 0.10 0.12 0.12 0.12 0.15 0.15 0.15 0.20 0.20 0.20 0.20
Cooling 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50
AIRFLOW CFM‡Heating 850 1125 885 1065 1320 1190 1285 1785 1315 1690 1720 1970
Cooling 895 1215 900 1200 1545 1245 1525 1925 1570 1930 2000 1990
LIMIT CONTROL SPST
HEATING BLOWER CONTROL (Off Delay) Selectable 90, 135, 180, or 225 Sec
BURNERS (Monoport) 22333444556 6
GAS CONNECTION SIZE 1/2-in. NPT
GAS VALVE (Redundant) Manufacturer White-Rodgers
Minimum Inlet Pressure (In. wc) 4.5 (Natural Gas)
Maximum Inlet Pressure (In. wc) 13.6 (Natural Gas)
IGNITION DEVICE Hot Surface

6
Carrier accessories*
* Factory-authorized and field-installed. Gas conversion kits are A.G.A./C.G.A. recognized.
†For 16 and 20 airflow sizes only (except 140-20 size unit) and in upflow application ONLY. See kit Installation Instructions for details.
‡Required for installation on combustible floors when no coil box is used, or when any coil box other than a Carrier cased coil is used.
N/A—Not Applicable
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
GAS CONVERSION KIT —NATURAL-TO-PROPANE KGANP2001ALL
GAS CONVERSION KIT —PROPANE-TO-NATURAL KGAPN1601ALL
TWINNING KIT (Upflow Only) N/A KGATW0401HSI†N/A
MANUFACTURED (Mobile) HOME KIT KGAMH0101KIT N/A
DOWNFLOW BASE (For Combustible Floors)‡ KGASB0201ALL
VENT TERMINATION KIT (Bracket Only for 2 Pipes) 2-in. —KGAVT0101BRA 3-in. —KGAVT0201BRA
CONCENTRIC TERMINATION KIT (Single Exit) 2-in. —KGAVT0501CVT 3-in. —KGAVT0601CVT
CONDENSATE FREEZE PROTECTION KIT KGAHT0101CFP
ELECTRONIC AIR CLEANER (EAC) Model AIRA
MECHANICAL AIR CLEANER Model 31MF or MACA
HUMIDIFIER Models HUM
HEAT RECOVERY VENTILATOR Model HRV
ENERGY RECOVERY VENTILATOR Model ERV
THERMOSTAT —NON-PROGRAMMABLE
For Use with 1-Speed Air Conditioner —TSTATCCNAC01-B
For Use with 2-Speed Air Conditioner —TSTATCCN2S01-B
For Use with 2-Speed Heat Pump —TSTATCCN2S01-B
THERMOSTAT —PROGRAMMABLE
For Use with 1-Speed Air Conditioner —TSTATCCPAC01-B
For Use with 2-Speed Air Conditioner —TSTATCCP2S01-B
For Use with 1-Speed Heat Pump —TSTATCCPDF01-B
For Use with 2-Speed Heat Pump —TSTATCCP2S01-B or TSTATCCPDF01-B
THERMIDISTAT —PROGRAMMABLE/
NON-PROGRAMMABLE THERMOSTAT W/Humidity Control
TSTATCCPRH01-B
ZONING —2 ZONE ZONECC2KIT01-B, ZONEKIT2ZCAR
ZONING —4 ZONE ZONECC4KIT01-B
ZONING —8 ZONE ZONECC8KIT01-B

7
®
A93086
CONCENTRIC
VENT
Aconcentricventkitallowsvent
and combustion-air pipes to
terminate through a single exit
in a roof or side wall.
One pipe runs inside the other
allowing venting through the
inner pipe and combustion air to
be drawn in through the outer
pipe.
A88202
DOWNFLOW
SUBBASE
One base fits all furnace sizes.
The base is designed to be in-
stalledbetweenthefurnaceanda
combustible floor when no coil
box is used or when a coil box
other than a Carrier cased coil is
used. It is A.G.A./C.G.A. design
certified for use with Carrier
58MXA furnaces when installed
in downflow applications.
A97152
ELECTRONIC OR
MECHANICAL
AIR CLEANER
Cleanstheairofsmoke,dirt,and
many pollens commonly found.
Saves decorating and cleaning
expenses by keeping carpets,
furniture, and drapes cleaner.
Electronic air cleaner is shown.
A97432
CONTROLS:
THERMOSTATS
AND ZONING
Available in programmable and
non-programmable models,
Carrier thermostats maintain a
constant, comfortable tempera-
ture level in the home.
For the ultimate in home com-
fort, Carrier’s 2, 4 and 8-zone
systems allow temperature con-
trol of individual “zones”of the
home. This is accomplished
through a series of electronic
dampers and remote room
sensors. The 4-zone system is
shown.
A94336
ENERGY/HEAT
RECOVERY
VENTILATOR
Carrier’senergyorheatrecovery
ventilators exhaust stale indoor
air and provide fresh outdoor air
to the home while minimizing
heat loss and humidity level.
Especially useful for today’s
tighter constructed houses.
Energy recovery ventilator is
shown.
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A95248
HUMIDIFIER
By adding moisture to winter-
dry air, a Carrier humidifier can
oftenimprovecomfortandkeeps
woodwork, wallpaper, and paint
in better condition. Moisturizing
household air also helps to retain
normal body heat and provides
comfort at lower temperatures.
A96214
CK5 CASED COIL
(as shown)
The CD5 or CK5 Cased Coil is
an upflow/downflow furnace
coil which can also replace the
downflow subbase when
installing the 58MXA on
combustible flooring in the
downflow orientation.

8
17
5
⁄
16
"
24
1
⁄
2
"
27
9
⁄
16
"
TYP
27
5
⁄
8
"
29
11
⁄
16
"
TYP
30
13
⁄
16
"
32
5
⁄
8
"
TYP
33
1
⁄
4
"
TYP
CONDENSATE DRAIN TRAP LOCATION (ALTERNATE UPFLOW)
7⁄8-IN. DIA
ACCESSORY POWER ENTRY
7⁄8-IN. DIA
POWER CONN
CONDENSATE DRAIN TRAP LOCATION (DOWNFLOW & HORIZONTAL LEFT)
26
15
⁄
16
"
24
1
⁄
2
"
22
5
⁄
16
"
2
-IN. COMBUSTION-
AIR CONN
1
⁄
2
-IN. DIA
GAS CONN
2
-IN. VENT CONN
1⁄2-IN. DIA THERMOSTAT
ENTRY
22
11
⁄
16
"
SIDE INLET
23
1
⁄
4
" TYP
SIDE INLET
1
1
⁄
4
"
1"E
INLET
11
⁄
16
"
11
⁄
16
"
D
13
⁄
16
"
13
⁄
16
"
OUTLET
A
AIRFLOW
OUTLET
26
15
⁄
16
"
28
1
⁄
2
"
22
5
⁄
16
"
19"
13
⁄
16
"
5
⁄
8
"
5
⁄
16
"
1"
39
7
⁄
8
"
22
1
⁄
4
" TYP
11
⁄
16
"
7
⁄
16
"
24
3
⁄
16
"
BOTTOM INLET
18
1
⁄
4
"
22
11
⁄
16
"
CONDENSATE DRAIN
TRAP LOCATION
(DOWNFLOW &
HORIZONTAL RIGHT)
OR ALTERNATE
1
⁄
2
-IN. DIA GAS CONN
2-IN. COMBUSTION- AIR CONN
1⁄2-IN. DIA
GAS CONN
7⁄8-IN. DIA
POWER CONN
1⁄2-IN. DIA
THERMOSTAT ENTRY
2-IN. VENT CONN
DIMPLE LOCATORS
FOR HORIZONTAL
HANGING
14
1
⁄
2
"
TYP SIDE INLET
9
7
⁄
16
"
TYP
26
15
⁄
16
" TYP
CONDENSATE DRAIN LOCATION (UPFLOW)
30
1
⁄
2
"
9
⁄
16
"
TYP
CONDENSATE
DRAIN LOCATION
(UPFLOW)
26
1
⁄
4
"
26
1
⁄
4
"
NOTES: Minimum return-air opening at furnace, based on metal
duct. If flex duct is used, see flex duct manufacturer's recommendation for equivalent diameters: 1. For 800 CFM 16-in. round or 14-1/2X 12-in. rectangle.
2. For 1200 CFM 20-in. round or 14-1/2X 19-1/2in. rectangle.
3. For 1600 CFM 22-in. round or 14-1/2X 23-1/4in. rectangle. 4. 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
A98568
DIMENSIONS (In.)
UNIT SIZE A D E
040-08
17-1/2 15-7/8 16
040-12
17-1/2 15-7/8 16
060-08
17-1/2 15-7/8 16
060-12
17-1/2 15-7/8 16
060-16
17-1/2 15-7/8 16
080-12
17-1/2 15-7/8 16
080-16
17-1/2 15-7/8 16
080-20
21 19-3/8 19-1/2
100-16
21 19-3/8 19-1/2
100-20
21 19-3/8 19-1/2
120-20
24-1/2 22-7/8 23
140-20 24-1/2 22-7/8 23

9
DOWNFLOW SUBBASE — DIMENSIONS (In.)
* The plenum should be constructed 1/4 in. smaller in width and depth than the plenum dimensions shown above.
FURNACE
CASING
WIDTH FURNACE IN DOWNFLOW APPLICATION
PLENUM OPENING* FLOOR OPENING HOLE NO.
FOR WIDTH
ADJUSTMENTABCD
17-1/2 Furnace with or without CD5 or CK5 Coil
Assembly or KCAKC Coil Box 15-1/8 19 16-3/4 20-3/8 3
21 Furnace with or without CD5 or CK5 Coil
Assembly or KCAKC Coil Box 18-5/8 19 20-1/4 20-3/8 2
24-1/2 Furnace with or without CD5 or CK5 Coil
Assembly or KCAKC Coil Box 22-1/8 19 23-3/4 20-3/8 1
LOCATING
TAB
LOCATING
TAB
1234
4321
B
D
Assembled Disassembled
A97427 A88207
CONCENTRIC VENT
DIMENSIONS (In.)
* Dimension A will change accordingly as dimension D is lengthened or shortened.
†Dimension D may be lengthened to 60 in. maximum. Dimension D may also be
shortened by cutting the pipes provided in the kit to 12 in. minimum.
KIT PART NO. A* B C D†EF
KGAVT0501CVT 33-3/8 2 3-1/2 16-5/8 6-1/4 5-3/4
KGAVT0601CVT 38-7/8 3 4-1/2 21-1/8 7-3/8 6-1/2
A97110
C IN. DIA
B IN. DIA PVC
VENT/EXHAUST
1
3
/ 16
B IN. DIA PVC
INTAKE/COMBUSTION AIR
D
E
F
A
1
1
/2
;;;;
;;;;
C
A
1 1/4″ TYP
PLENUM
OPENING
FACTORY-SUPPLIED
FIELD-INSTALLED
INSULATION

10
CONDENSATE TRAP
1⁄2OD
INDUCER HOUSING
DRAIN CONNECTION
1⁄4OD
COLLECTOR BOX TO
TRAP RELIEF PORT
5⁄8OD
COLLECTOR BOX
DRAIN CONNECTION
1⁄2-IN. PVC OR CPVC
SCREW HOLE FOR
UPFLOW OR DOWN-
FLOW APPLICATIONS
(OPTIONAL)
14
2
78
18
7
SLOT FOR SCREW
HORIZONTAL
APPLICATION
(OPTIONAL)
WIRE TIE
GUIDES
(WHEN USED)
12
1
34
1
34
FRONT VIEW SIDE VIEW
FURNACE
DOOR
FURNACE
DOOR CONDENSATE
TRAP
78
14
26
4
FURNACE
SIDE
FURNACE
SIDE
12
1
14
26
434
534 5
4
SIDE VIEW FRONT VIEW END VIEW FRONT VIEW
34
DOWNFLOW AND ALTERNATE
EXTERNAL UPFLOW APPLICATIONS HORIZONTAL
APPLICATIONS
FIELD
DRAIN
CONN
FIELD
DRAIN
CONN
CONDENSATE
TRAP (INSIDE)
BLOWER SHELF
ALTERNATE DRAIN
TUBE LOCATION
UPFLOW APPLICATIONS
CONDENSATE TRAP
DRAIN TUBE LOCATION
A93026
A
Media/
Filter Cabinet
AB
16" 17 16"
20" 21 20"
24" 25 24"
23 5/8"
23 3/8"
Furnace Side
23 3/4"
Centerline Screw Slots
25 5/8"
Duct Side
24 3/8"
Opening with Flanges Bent
23 1/8"
Opening
5 3/4"
B Opening
MEDIA FILTER CABINET
A00309

11
Clearance to combustibles
A97609
324999-201 TOP REV. B
MINIMUM INCHES CLEARANCE
TO COMBUSTIBLE CONSTRUCTION
*
Mimimum front clearance for service 30
inches (762mm).
140 size furnaces require 1 inch back
clearance to combustible materials.
For installation on combustible floors only
when installed on special base No.
KGASB0201ALL, Coil Assembly, Part No.
CD5 or CK5, or Coil Casing, Part No.
KCAKC.
Clearance shown is for air inlet and air
outlet end.
Line contact is permissible only between
lines formed by intersections of top and two
sides of furnace jacket, and building joists,
studs, or framing.
120 and 140 size Furnaces require 1 inch
bottom clearance to combustible materials.
Ø
†
§
Clearance in inches Vent clearance to combustibles 0".
Clearance arrows
do not change with
furnace orientation.
DOWNFLOW POSITIONS:
HORIZONTAL POSITIONS:
††
ALL POSITIONS:
*
BOTTOM
DESSOUS
0"
Ø
†
3"
0"
§
0"
††
TOP/PLENUM
DESSUS/CHAMBRE D´AIR
1"
0" §
30
MIN
SIDE
COTES
FRONT
AVANT
BCK
ARRIE
A
E
R
SERVIE
C
LÈNTRT
EN
E
I
V
AN
AT
FRONT
SIDE
COTES
FOU
U
FRNACS
EE
I
A
RN
This forced air furnace is equipped for use with natural gas at altitudes 0 - 10,000 ft (0 - 3,050m), except 140 size
Furnaces are only approved for altitudes 0 - 7,000 ft. (0 - 2,135m).
An accessory kit, supplied by the manufacturer, shall be used to convert to propane gas use or may be required for
some natural gas applications.
This furnace is for indoor installation in a building constructed on site. This furnace may be installed in a manufactured
(mobile) home when stated on rating plate and using factory authorized kit.
This furnace may be installed on combustible flooring in alcove or closet at minimum clearance from combustible
material.
This appliance requires a special venting system. Refer to the installation instructions for parts list and method of
installation. This furnace is for use with schedule-40 PVC, PVC-DWV, or ABS-DWV pipe, and must not be vented in
common with other gas-fired appliances. Construction through which vent/air intake pipes may be installed is maximum
24 inches (600 mm), minimum 3/4 inches (19 mm) thickness (including roofing materials).
This furnace is approved for UPFLOW, DOWNFLOW and
HORIZONTAL installations.

12
Performance data
PSC—Permanent Split Capacitor
EFFICIENCY
* Capacity and AFUE in accordance with U.S. Government DOE test procedures effective November 10, 1997.
ICS—Isolated Combustion System
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
DIRECT-DRIVE MOTOR
Hp (PSC) 1/5 1/3 1/5 1/3 1/2 1/3 1/2 3/4 1/2 3/4 3/4 3/4
MOTOR FULL LOAD AMPS 4.9 5.8 4.9 5.8 7.9 5.8 7.9 11.1 7.9 11.1 11.1 11.1
RPM (Nominal) —SPEEDS 1075—3 1075—4 1075—3 1075—4
BLOWER WHEEL DIAMETER X WIDTH (In.) 10 x 6 10 x 7 10 x 6 10 x 7 11 x 8 10 x 7 11 x 8 11 x 10 11 x 8 11 x 10 11 x 10 11 x 10
FILTER SIZE (In.) —(Washable) (1) 16 x 25 x 1 (1) 20 x 25 x 1 (1) 24 x 25 x 1
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
CAPACITY* (ICS) Upflow 38,000 38,000 56,000 56,000 56,000 75,000 75,000 75,000 94,000 94,000 113,000 129,000
(Shaded capacities are Downflow 38,000 38,000 56,000 56,000 56,000 75,000 75,000 75,000 94,000 94,000 113,000 129,000
specified on rating plate) Horizontal 38,000 38,000 56,000 56,000 56,000 74,000 75,000 75,000 93,000 93,000 112,000 128,000
AFUE%* Upflow 94.3 95.5 93.1 93.1 93.1 93.1 93.1 93.1 93.1 93.1 93.1 92.6
Downflow 92.9 94.0 91.7 91.7 91.7 91.7 91.7 91.7 91.7 91.7 91.7 91.2
Nonweatherized ICS Horizontal 93.7 94.9 92.5 92.5 92.5 92.5 92.5 92.5 92.5 92.5 92.5 92.0

13
AIR DELIVERY—CFM (With Filter)*
‡•Airflow shown is for bottom only return-air supply with factory supplied 1-in. washable filter(s).
•For air delivery above 1800 CFM, see Air Delivery table for other options.
•An airflow reduction of up to 7% may occur when using the factory-specified 4 5/16-inch wide, high efficiency media filter.
•For best furnace efficiency when using the 4 5/16-inch wide media filter, adjust the blower speed tap to near the mid-point of the rise range.
UNIT SIZE RETURN-AIR SUPPLY SPEED
EXTERNAL STATIC PRESSURE (In. wc)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
040-08 1 side or
bottom
High
Med-Low
Low
1075
850
740
1040
825
700
995
780
650
945
740
620
895
685
565
840
635
515
760
560
455
670
480
385
040-12 1 side or
bottom
High
Med-High
Med-Low
Low
1470
1315
1125
930
1415
1280
1110
925
1400
1235
1085
910
1285
1180
1045
850
1215
1115
990
830
1120
1035
915
770
995
930
830
705
890
825
740
635
060-08 1 side or
bottom
High
Med-Low
Low
1100
890
745
1065
865
710
1005
810
670
945
765
625
900
705
565
805
620
505
730
540
425
610
475
360
060-12 1 side or
bottom
High
Med-High
Med-Low
Low
1430
1270
1070
915
1375
1260
1055
895
1325
1215
1045
885
1275
1160
1015
865
1200
1105
975
840
1135
1035
920
800
1040
950
850
720
935
850
750
650
060-16 1 side or
bottom
High
Med-High
Med-Low
Low
1700
1500
1325
1205
1695
1465
1295
1170
1640
1435
1265
1145
1580
1385
1230
1110
1545
1355
1190
1080
1450
1300
1150
1035
1380
1250
1105
990
1310
1185
1050
950
080-12 1 side or
bottom
High
Med High
Med-Low
Low
1535
1395
1200
1040
1470
1350
1175
1020
1405
1300
1125
990
1330
1225
1065
960
1245
1155
1030
910
1160
1080
970
860
1065
985
890
785
935
880
780
680
080-16 1 side or
bottom
High
Med-High
Med-Low
Low
1750
1495
1310
1135
1685
1455
1260
1105
1635
1405
1225
1075
1575
1355
1170
1040
1525
1305
1125
995
1445
1250
1095
995
1380
1185
1040
910
1310
1120
980
860
080-20
1 side
or
bottom
High
Med-High
Med-Low
Low
2200
2100
1815
1560
2175
2025
1760
1555
2085
1945
1720
1515
2025
1865
1670
1460
1925
1785
1620
1435
1820
1700
1550
1390
1735
1620
1480
1340
1635
1540
1405
1270
both sides or
1 side and
bottom
High
Med-High 2360 1965 2280 1925 2210 1870 2130 1830 2035 1760 1960 1710 1875 1670 1790 1575
100-16 1 side or
bottom
High
Med-High
Med-Low
Low
1740
1500
1340
1195
1705
1470
1315
1175
1660
1445
1300
1165
1615
1410
1270
1130
1570
1375
1235
1100
1500
1330
1200
1070
1425
1280
1140
1030
1355
1210
1095
975
100-20
1 side
or
bottom
High
Med-High
Med-Low
Low
2250
2020
1725
1490
2175
1950
1690
1480
2090
1900
1660
1460
2020
1840
1630
1440
1930
1790
1575
1380
1855
1710
1520
1340
1760
1640
1460
1295
1670
1545
1370
1230
both sides or
1 side and
bottom
High
Med-High 2360 1960 2315 1940 2265 1930 2200 1900 2130 1850 2055 1800 1965 1740 1890 1660
120-20
bottom
only
High
Med-High
Med-Low
Low
2350
2100
1770
1545
2250
2015
1720
1520
2160
1955
1675
1465
2070
1875
1620
1415
2000
1810
1575
1365
1885
1710
1515
1325
1790
1650
1450
1265
1635
1540
1365
1185
both sides or
1 side and
bottom
High
Med-High 2435 2040 2360 2000 2285 1950 2220 1905 2130 1835 2050 1790 1965 1725 1875 1650
1 side only High
Med-High 2255 1985 2190 1930 2115 1890 2045 1840 1965 1780 1890 1720 1800 1645 1710 1560
140-20
bottom only High
Med-High
Med-Low
Low
2285
2020
1675
1460
2210
1970
1650
1445
2140
1920
1620
1430
2065
1870
1590
1400
1990
1805
1560
1370
1910
1730
1510
1320
1830
1660
1450
1275
1745
1590
1390
1230
both sides or
1 side and
bottom
High
Med-High 2310 1975 2255 1945 2185 1900 2120 1860 2045 1835 1965 1775 1880 1720 1800 1640
1 side only High
Med-High 2140 1930 2080 1850 2025 1800 1945 1740 1875 1725 1795 1660 1725 1580 1625 1495

14
Combustion-air and vent piping
MAXIMUM ALLOWABLE PIPE LENGTH (FT)
See notes on pg. 15.
ALTITUDE
ABOVE SEA
LEVEL (FT) UNIT SIZE TERMINATION TYPE PIPE DIA (IN.)* NUMBER OF 90°ELBOWS 123456
0 to 2000
040-08
040-12 2 Pipe or 2-In. Concentric 1 5 NA NA NA NA NA
1-1/2 70 70 65 60 60 55
2 707070707070
060-08
060-12
060-16 2 Pipe or 2-In. Concentric 1-1/2 20 15 10 5 NA NA
2 707070707070
080-12
080-16
080-20 2 Pipe or 2-In. Concentric 1-1/2 10 NA NA NA NA NA
2 555035303020
2-1/2 70 70 70 70 70 70
100-16
100-20 2 Pipe or 3-In. Concentric 2 5 NA NA NA NA NA
2-1/2 40 30 20 20 10 NA
3 707070707070
120-20 2 Pipe or 3-In. Concentric
2-1/2 one disk 10 NA NA NA NA NA
3†45 40 35 30 25 20
3†no disk 70 70 70 70 70 70
4†no disk 70 70 70 70 70 70
140-20 2 Pipe or 3-In. Concentric
2-1/2 one disk 5 NA NA NA NA NA
3†one disk 40 35 30 25 20 15
3†no disk 60 56 52 48 44 40
4†no disk 70 70 70 70 70 70
2001 to 3000
040-08
040-12 2 Pipe or 2-In. Concentric 1-1/2 67 62 57 52 52 47
2 707070707070
060-08
060-12
060-16 2 Pipe or 2 In. Concentric 1-1/2 17 12 7 NA NA NA
2 706766616161
080-12
080-16
080-20 2 Pipe or 2-In. Concentric 2 494430252515
2-1/2 70 70 70 70 70 70
100-16
100-20 2 Pipe or 3-In. Concentric 2-1/2 35 26 16 16 6 NA
3 707070706661
120-20 2 Pipe or 3-In. Concentric 3 14 9 NA NA NA NA 3†no disk 70 70 63 56 50 43
4†no disk 70 70 70 70 70 70
140-20 2 Pipe or 3-In. Concentric 3†one disk 20 15 10 5 NA NA 3†no disk 39 35 31 27 23 19
4†no disk 70 70 70 70 70 70
3001 to 4000
040-08
040-12 2 Pipe or 2-In. Concentric 1-1/2 64 59 54 49 48 43
2 707070707070
060-08
060-12
060-16 2 Pipe or 2-In. Concentric 1-1/2 16 11 6 NA NA NA
2 686362575756
080-12
080-16
080-20 2 Pipe or 2-In. Concentric 2 464128232213
2-1/2 70 70 70 70 70 70
100-16
100-20 2 Pipe or 3-In. Concentric 2-1/2 33 24 15 14 5 NA
3 707070666156
120-20 2 Pipe or 3-In. Concentric 3†no disk 65 58 51 44 38 31
4†no disk 70 70 70 70 70 70
140-20 2 Pipe or 3-In. Concentric 3†one disk 11 6 NA NA NA NA 3†no disk 30 26 22 18 14 10
4†no disk 70 70 70 70 70 70
4001 to 5000‡
040-08
040-12 2 Pipe or 2-In. Concentric 1-1/2 60 55 50 45 44 39
2 707070707070
060-08
060-12
060-16 2 Pipe or 2-In. Concentric 1-1/2 15 10 5 NA NA NA
2 645958535252
080-12
080-16
080-20 2 Pipe or 2-In Concentric 2 443926212011
2-1/2 70 70 70 70 70 70
100-16
100-20 2 Pipe or 3-In. Concentric 2-1/2 31 22 13 12 NA NA
3 707067625752
120-20 2 Pipe or 3-In. Concentric 3†no disk 53 46 40 33 26 20
4†no disk 70 70 70 70 70 70
140-20 2 Pipe or 3-In. Concentric 3†no disk 21 17 13 9 5 NA
4†no disk 69 64 59 54 49 44

15
MAXIMUM ALLOWABLE PIPE LENGTH (FT) Continued
* Disk usage—Unless otherwise specified, use perforated disk assembly (factory-supplied in loose parts bag). If 1 disk is stated, separate 2 halves of
perforated disk assembly and use shouldered disk half. When using shouldered disk half, install screen side toward inlet box.
†Wide radius elbow.
‡Vent sizing for Canadian installations over 4500 ft (1370m) above sea level are subject to acceptance by the local authorities having jurisdiction.
NA —Not Allowed; pressure switch will not make.
NOTES:
1. Do not use pipe size greater than those specified in table or incomplete combustion, flame disturbance, or flame sense lockout may occur.
2. Size both the combustion-air and vent pipe independently, then use the larger diameter for both pipes.
3. Assume two 45°elbows equal one 90°elbow. Long radius elbows are desirable and may be required in some cases.
4. Elbows and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.
5. The minimum pipe length is 5 ft for all applications.
6. Use 3 in. diameter vent termination kit for installations requiring 4 in. diameter pipe.
ALTITUDE
ABOVE SEA
LEVEL (FT) UNIT SIZE TERMINATION TYPE PIPE DIA (IN.)* NUMBER OF 90°ELBOWS 123456
5001 to 6000‡
040-08
040-12 2 Pipe 2-In. Concentric 1-1/2 57 52 47 42 40 35
2 707070707070
060-08
060-12
060-16 2 Pipe or 2-In. Concentric 1-1/2 14 9 NA NA NA NA
2 605554494847
080-12
080-16
080-20 2 Pipe or 2-In. Concentric 2 4136231817 8
2-1/2 70 70 70 70 70 70
100-16
100-20 2 Pipe or 3-In Concentric 2-1/2 29 21 12 11 NA NA
3 706762575247
120-20 2 Pipe or 3-In. Concentric 3†no disk 42 35 29 22 15 9
4†no disk 70 70 70 70 70 70
140-20 2 Pipe or 3-In.
Concentric 3†no disk 12 8 NA NA NA NA
4†no disk 42 37 32 27 22 17
6001 to 7000‡
040-08
040-12 2 Pipe or 2-In. Concentric 1-1/2 53 48 43 38 37 32
2 707068676664
060-08
060-12
060-16 2 Pipe or 2-In. Concentric 1-1/2 13 8 NA NA NA NA
2 575250454443
080-12
080-16
080-20 2 Pipe or 2-In. Concentric 2 3833211615 6
2-1/2 70 70 68 67 66 64
100-16
100-20 2 Pipe or 3-In. Concentric ‘2-1/2 27 19 10 9 NA NA
3 686358534843
120-20 2 Pipe or 3-In. Concentric 3†no disk 31 24 18 11 NA NA
4†no disk 70 70 70 70 67 62
140-20 2 Pipe or 3-In. Concentric 4†no disk 17 12 7 NA NA NA
7001 to 8000‡
040-08
040-12 2 Pipe or 2-In. Concentric 1-1/2 49 44 39 34 33 28
2 666563626059
060-08
060-12
060-16 2 Pipe or 2-In. Concentric 1-1/2 12 7 NA NA NA NA
2 534846414038
080-12
080-16
080-20 2 Pipe or 2-In. Concentric 2 3631191412NA
2 1/2 66 65 63 62 60 59
100-16
100-20 2 Pipe or 3-In. Concentric 2-1/2 25 17 8 7 NA NA
3 635853484338
120-20 2 Pipe or 3-In. Concentric 3†no disk 20 13 7 NA NA NA
4†no disk 61 56 51 46 41 36
140-20 NA
8001 to 9000‡
040-08
040-12 2 Pipe or 2-In. Concentric 1-1/2 46 41 36 31 29 24
2 626058565553
060-08
060-12
060-16 2 Pipe or 2-In. Concentric 1-1/2 11 6 NA NA NA NA
2 494442373534
080-12
080-16
080-20 2 Pipe or 2-In. Concentric 2 3328171210NA
2-1/2 62 60 58 56 55 53
100-16
100-20 2 Pipe or 3-In. Concentric 2-1/2 23 15 7 5 NA NA
3 595449443934
120-20 2 Pipe or 3-In. Concentric 3†no disk 10 NA NA NA NA NA
4†no disk 35 30 25 20 15 10
140-20 NA
9001 to
10,000‡
040-08
040-12 2 Pipe or 2-In. Concentric 1-1/2 42 37 32 27 25 20
2 575553514947
060-08
060-12
060-16 2 Pipe or 2-In. Concentric 2 45 40 38 33 31 29
080-12
080-16
080-20 2 Pipe or 2-In. Concentric 2 302514 9 7NA
2-1/2 57 55 53 51 49 47
100-16
100-20 2 Pipe or 3-In. Concentric 2-1/2 21 13 5 NA NA NA
3 544944393429
120-20 2 Pipe or 3-In. Concentric 4†no disk 10 5 NA NA NA NA
140-20 NA

16
MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH (FT) WITH AND WITHOUT INSULATION
IN WINTER DESIGN TEMPERATURE AMBIENT*
* Pipe length (ft) specified for maximum vent pipe lengths located in unconditioned spaces.Vent pipes located in unconditioned space cannot
exceed the total allowable pipe length as specified in Maximum Allowable Pipe Length table.
†Insulation thickness based on R value of 3.5 per in.
UNIT
SIZE
WINTER DESIGN
TEMPERATURE
(°F)
MAX PIPE
DIAMETER
(IN.) WITHOUT INSULATION WITH 3/8-IN. OR THICKER INSULATION†
040-08
040-12
20 1-1/2 51 70
0 1-1/2 28 70
–20 1-1/2 16 70
060-08
060-12
060-16
20 2 65 70
0 2 35 70
–20 2 20 70
080-12
080-16
080-20
20 2-1/2 70 70
0 2-1/2 47 70
–20 2-1/2 28 70
100-16
100-20
20 3 70 70
0 3 50 70
–20 3 28 70
120-20
20 4 70 70
0 4 48 70
–20 4 23 70
140-20
20 4 70 70
0 4 57 70
–20 4 30 70

17
Electrical data
* Permissible limits of the voltage range at which unit will operate satisfactorily.
†Unit ampacity =125% of largest operating component’s full load amps plus 100% of all other potential operating components’(EAC, humidifier,
etc.) full load amps.
‡Length is as measured 1 way along wire path between unit and service panel for maximum 2% voltage drop.
** Time-delay type is recommended.
Typical wiring schematic
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
UNIT VOLTS —HERTZ —PHASE 115—60—1
OPERATING VOLTAGE RANGE (Min —Max)* 104—127
MAXIMUM UNIT AMPS 6.1 7.3 6.1 7.1 9.5 7.6 10.0 14.1 10.2 14.8 14.6 14.3
UNIT AMPACITY†8.4 10.0 8.4 9.8 12.8 10.4 13.4 18.4 13.5 19.3 19.1 18.8
MINIMUM WIRE SIZE 14 14 14 14 14 14 14 12 14 12 12 12
MAXIMUM WIRE LENGTH (Ft)‡44 37 44 38 29 36 28 31 27 30 30 30
MAXIMUM FUSE OR CKT BKR (Amps)** 15 15 15 15 15 15 15 20 15 20 20 20
TRANSFORMER (24v) 40va
EXTERNAL CONTROL POWER AVAILABLE Heating 12va
Cooling 21va
AIR CONDITIONING BLOWER RELAY Standard
A96415
115-VOLT FUSED
DISCONNECT
SWITCH
(WHEN
REQUIRED)
AUXILIARY
J-BOX
CONTROL
BOX
24-VOLT
TERMINAL
BLOCK
THREE-WIRE
HEATING-
ONLY
FIVE
WIRE
NOTE 1
NOTE 2 FIELD-SUPPLIED
FUSED DISCONNECT
CONDENSING
UNIT
TWO
WIRE
FURNACE
R
G
C
WCR GY
GND
GND
FIELD 24-VOLT WIRING
FIELD 115-, 208/230-, 460-VOLT WIRING
FACTORY 24-VOLT WIRING
FACTORY 115-VOLT WIRING
208/230- OR
460-VOLT
THREE
PHASE
208/230-
VOLT
SINGLE
PHASE
WHT
BLK
WHT
BLK
NOTES: Connect Y-terminal as shown for proper operation.
Some thermostats require a "C" terminal connection as shown.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
W
Y
GND
THERMOSTAT
TERMINALS
1.
2.
3.

18
Typical installations
Basement — Upflow Application A93063
COMBUSTION
AIR PIPE
A/C COIL
OUTDOOR UNIT VENT PIPE
HUMIDIFIER
GAS-FIRED
WATER HEATER
ELECTRONIC
AIR CLEANER
AIRFLOW
Closet — Downflow Application A93064
ELECTRONIC
AIR CLEANER
HUMIDIFIER
A/C COIL
VENT
COMBUSTION
AIR
OUTDOOR
UNIT
AIRFLOW

19
COMBUSTION–AIR PIPE
ELECTRONIC
AIR CLEANER
FURNACE
CONDENSATE
DRAIN
REFRIGERATION
PIPING
AIR CONDITIONING
COIL
AIRFLOW
VENT PIPE
Attic — Horizontal Application
A93065
COMBUSTION–
AIR PIPE
VENT
PIPE
ELECTRONIC
AIR CLEANER
FURNACE CONDENSATE
DRAIN
AIRFLOW
AIR CONDITIONING
COIL
REFRIGERATION
PIPING
A93066
Crawlspace — Horizontal Application

Carrier Corporation •Indianapolis, IN 46231 10-00
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4 Page 20 Catalog No. 525-80001 Printed in U.S.A. PC 101 Form 58MXA-9PD
Tab 6a 8a Replaces: 58MXA-8PD