Carrier Infinity 59TN6A Operation manual

1
59TN6A
InfinityRTwo---Stage, Variable Speed
4 --- W a y M u l t i p o i s e
Condensing Gas Furnace
Series 100
Product Data
A11263
The 59TN6A Multipoise Variable--Speed Condensing Gas Furnace
features the two--stage InfinityRSystem. The Comfort Heat
TechnologyRtwo--stage gas system is at the heart of the comfort
provided by this furnace, along with the variable--speed ECM
blower motor, and two--speed inducer motor. With an Annual Fuel
Utilization Efficiency (AFUE) of up to 96.7%, the Infinity
two--stage gas furnace provides exceptional savings when
compared to a standard furnace. This Infinity Gas Furnace also
features 4--way multipoise installation flexibility, and is available
in four model sizes. The 59TN6A can be vented for direct
vent/two--pipe, ventilated combustion air, or single--pipe
applications. A Carrier Infinity Control and Infinity Air
Conditioner or Heat Pump can be used to form a complete Infinity
System. All units meet California Air Quality Management District
emission requirements. All sizes are design certified in Canada.
STANDARD FEATURES
SInfinityRSystem; compatible with single-- and multiple--zone
Infinity systems
SQuiet operation. Compare for yourself at HVACpartners.com
SIdeal height 35--in. (889 mm) cabinet: short enough for taller
coils, but still allows enough room for service
SInfinity Features—match with the Infinity Control for Infinity
System benefits
SIntegral part of the Ideal Humidity SystemRTechnology
SSilicon Nitride Power Heat™Hot Surface Igniter
SSmartEvap™technology helps control humidity levels in the
home when used with a compatible humidity control system
SComfortFan™technology allows control of continuous fan
speed from a compatible thermostat
SExternal Media Filter Cabinet included
S4--way multipoise design for upflow, downflow or horizontal
installation, with unique vent elbow and optional through--
the--cabinet downflow venting capability
SVariable--Speed blower motor, two--speed inducer motor, and
two--stage gas valve
SSelf--diagnostics and extended diagnostic data through the
Advanced Product Monitor ( APM) accessory or Infinity User
Interface
SAdjustable blower speed for cooling, continuous fan, and
dehumidification
SAluminized--steel primary heat exchanger
SStainless--steel condensing secondary heat exchanger
SPropane convertible (See Accessory list)
SFactory--configured ready for upflow applications
SFully--insulated casing including blower section
SConvenient Electronic Air Cleaner and Humidifier connections
SDirect--vent/sealed combustion, single--pipe venting or
ventilated combustion air
SInstallation flexibility: (sidewall or vertical vent)
SResidential installations may be eligible for consumer financing
through the Retail Credit Program
LIMITED WARRANTY*
S10 year parts and lifetime heat exchanger limited warranty to the
original purchaser upon timely registration.
SLimited warranty period is five years for parts and twenty years
for the heat exchanger if not registered within 90 days of
installation.{
* For owner occupied, residential applications.
{Jurisdictions where warranty benefits cannot be conditioned on registra-
tion will receive registered limited warranty benefits.
CERTIFIED
Always Ask For
Use of the AHRI Certified TM Mark indicates a
manufacturer’s participation in the program. For
verification of certification for individual products,
go to www.ahridirectory.org.

2
SPECIFICATIONS
Heating Capacity and Efficiency 060-14 080-14 100-20 120-22
Input High Heat (BTUH) 60,000 80,000 100,000 120,000
Low Heat (BTUH) 39,000 52,000 65,000 78,000
Output High Heat (BTUH) 58,000 78,000 98,000 117,000
Low Heat (BTUH) 37,000 50,000 63,000 76,000
Efficiency AFUE % (ICS) 96.3 96.2 96.7 96.7
Certified Temperature
Rise Range ºF (ºC)
High Heat 35 - 65
(19-36)
40 - 70
(21-38)
45 - 75
(25-41)
45 - 75
(25-41)
Low Heat 30 - 60
(17-33)
30 - 60
(17-33)
30 - 60
(17-33)
30 - 60
(17-33)
Airflow Capacity and Blower Data 060-14 080-14 100-20 120-22
Certified External Static
Pressure (in. w.c.)
Heating 0.12 0.15 0.20 0.20
Cooling 0.5 0.5 0.5 0.5
Airflow Delivery
@RatedESP(CFM)
High Heat 1075 1500 1515 1820
Low Heat 855 1060 1335 1640
Cooling 1335 1375 2030 2185
Cooling Capacity (tons)
@ 400, 350 CFM/ton
400 CFM/ton 33.5 55.5
350 CFM/ton 3.5 45.5 6
Direct-Drive Motor Type Electronically Commutated Motor (ECM)
Direct-Drive Motor HP 1/2 1/2 1 1
Motor Full Load Amps 7.7 7.7 12.8 12.8
RPM Range 300 - 1300
Speed Selections Variable (Communicating)
Blower Wheel Dia x Width in. 11 x 8 11 x 8 11 x 10 11 x 11
Air Filtration System Factory Supplied Media Cabinet
FieldSuppliedFilter
Filter Used for Certified Watt Data KGAWF1306UFR KGAWF1306UFR KGAWF1406UFR KGAWF1506UFR
Electrical Data 060-14 080-14 100-20 120-22
Input Voltage Volts-Hertz-Phase 115-60-1
Operating Voltage Range Min-Max 104-127
Maximum Input Amps Amps 9.7 9.7 14.8 14.8
Unit Ampacity Amps 12.7 12.7 19.2 19.2
Minimum Wire Size AWG 14 14 12 12
Maximum Wire Length
@ Minimum Wire Size
Feet 29 29 30 30
(M) (8.8) (8.8) (9.1) (9.1)
Maximum Fuse/Ckt Bkr
(Time-Delay Type Recommended) Amps 15 15 20 20
Transformer Capacity (24vac output) 40 VA
External Control Power
Available
Heating 24.3 VA
Cooling 34.6 VA
Controls 060-14 080-14 100-20 120-22
Gas Connection Size 1/2” - NPT
Burners (Monoport) 3 4 5 6
Gas Valve (Redundant)
Manufacturer White Rogers™
Minimum Inlet Gas
pressure (in. W.C.) 4.5
Maximum Inlet Gas
pressure (in. W.C.) 13.6
Gas Conversion Kit - Natural to Propane KGANP5201VSP
Gas Conversion Kit - Propane to Natural KGAPN4401VSP
Manufactured (Mobile) Home Kit not approved for MH use
Ignition Device Silicon Nitride
Limit Control 180 170 160 160
Heating Blower Control (Heating Off-Delay) Adjustable: 90, 120, 150, 180 seconds
Cooling Blower Control (Time Delay Relay) 90 seconds
Communication System Infinity; Infinity Zoning
Thermostat Connections W2,Y1,DHUM,G,COM24V,W/W1,Y/Y2,R
Accessory Connections EAC (115vac); HUM (24vac); 1-stg AC (via Y/Y2)

3
MODEL NUMBER NOMENCLATURE
59 TN6A060 V17 -- -- 14
S - Single Stage
T - Two Stage
M - Modulating
C - Comfort
P - Performance
N - Infinity
0 --- 90 AFUE
3 --- 93 AFUE
5 --- 95 AFUE
6 --- 96 AFUE
7 --- 97 AFUE S - Standard
E - Energy Efficient
V - Variable Speed
14 - 14.2”
17 - 17.5”
21 - 21.0”
24 - 24.5”
08 - 800 CFM
10 - 1000 CFM
12 - 1200 CFM
14 - 1400 CFM
16 - 1600 CFM
18 - 1800 CFM
20 - 2000 CFM
22 - 2200 CFM
Family
Major Series
Voltage
Minor Series
1 - 2
Family
3
Htg. Stages Tier
45
Effy.
6
Major Series Htg. Cap.
7 - 9
Motor
10 11 - 12
Width
13
Voltage
14
Minor Series Airflow
15 - 16
040=40,000 BTU
060=60,000 BTU
080=80,000 BTU
100=100,000 BTU
120=120,000 BTU
Not all familes have these models.
A11160
FURNACE COMPONENTS
RATING PLATE NOT SHOWN
(LOCATED ON BLOWER DOOR)
GAS VALVE
MAIN LIMIT SWITCH
(BEHIND GAS VALVE)
REPRESENTATIVE DRAWING ONLY, SOME MODELS MAY VARY IN APPEARANCE.
ELECTRICAL JUNCTION
BOX (IF REQUIRED,
LOCATION MAY VARY)
MEDIA CABINET
OPERATING INSTRUCTIONS
NOT SHOWN (LOCATED ON
MAIN FURNACE DOOR, SEE
OPERATING INSTRUCTIONS
INSIDE DOOR FIGURE).
FURNACE
CONTROL
BOARD
MANUAL RESET
ROLLOUT SWITCH
FLAME
SENSOR
MANUAL RESET
ROLLOUT SWITCH
GAS BURNER
HOT SURFACE
IGNITER
INDUCER MOTOR
ASSEMBLY
BLOWER AND
MOTOR
CAPACITOR/
POWER CHOKE
(IF USED)
BLOWER DOOR
SAFETY SWITCH
A11408

4
ACCESSORIES
DESCRIPTION PART NUMBER 060-14 080-14 100-20 120-22
Venting, Drainage and Installation
Vent Kit - Through the Cabinet KGADC0101BVC X X X X
Vent Terminal - Concentric - 2” (51 mm) KGAVT0701CVT XXXN/A
Vent Terminal - Concentric - 3” (76 mm) KGAVT0801CVT X X X X
Vent Terminal Bracket - 2” (51 mm) KGAVT0101BRA XXXN/A
Vent Terminal Bracket - 3” (76 mm) KGAVT0201BRA X X X X
CPVC to PVC Drain Adapters - 1/2” CPVC to 3/4” PVC KGAAD0110PVC X X X X
Horizontal Trap Grommet - Direct Vent KGACK0101HCK X X X X
Freeze Protect Kit - Heat Patch for Drain Trap KGAHT0201CFP X X X X
Freeze Protect Kit - Heat Tape KGAHT0101CFP X X X X
Furnace Base Kit for Combustible Floors KGASB0201ALL X X X X
Gas Conversion
GasCnvKit-NattoLP;Var-spdProducts KGANP5201VSP X X X X
Gas Cnv Kit - LP to Nat; Var-spd Products KGAPN4401VSP X X X X
GasOrificeKit-#42(NatGas) KGAHA0150N42 X X X X
GasOrificeKit-#43(NatGas) KGAHA0250N43 X X X X
GasOrificeKit-#44(NatGas) KGAHA0350N44 X X X X
GasOrificeKit-#45(NatGas) KGAHA0450N45 X X X X
GasOrificeKit-#46(NatGas) KGAHA0550N46 X X X X
GasOrificeKit-#47(NatGas) KGAHA1550N47 X X X X
GasOrificeKit-#48(NatGas) KGAHA1650N48 X X X X
Gas Orifice Kit - #54 (LP) KGAHA0650P54 X X X X
Gas Orifice Kit - #55 (LP) KGAHA0750P55 X X X X
Gas Orifice Kit - #56 (LP) KGAHA0850P56 X X X X
Gas Orifice Kit - 1.25mm (LP) KGAHA5750125 X X X X
Gas Orifice Kit - 1.30mm (LP) KGAHA5750130 X X X X
Indoor Air Quality
Carrier Infinity Air Purifier - 16x25 (406x635 mm) GAPAAXCC1625-A08 X X X X
Carrier Infinity Air Purifier - 20x25 (508x635 mm) GAPAAXCC2025-A08 X X X X
Carrier Infinity Air Purifier Repl. Filter- 16x25 (406x635 mm) GAPACCCAR1625-A05 X X X X
Carrier Infinity Air Purifier Repl. Filter- 20x25 (508x635 mm) GAPACCCAR2025-A05 X X X X
EZ Flex Cabinet 16” (406 mm) EZXCABCC1016-A20 X X X X
EZ Flex Cabinet 20” (508 mm) EZXCABCC1020-A20 X X X X
Cartridge Media Filter - 16” (406 mm) FILXXCAR0016 X X X X
Cartridge Media Filter - 20” (508 mm) FILXXCAR0020 X X X X
Cartridge Media Filter - 24” (610 mm) FILXXCAR0024 X X X X
EZ-Flex Filter - 16” (406 mm) EXPXXFIL0016 X X X X
EZ-Flex Filter - 20” (508 mm) EXPXXFIL0020 X X X X
EZ-Flex Filter - 24” (610 mm) EXPXXFIL0024 X X X X
EZ-Flex Filter with End Caps - 16” (406 mm) EXPXXUNV0016 X X X X
EZ-Flex Filter with End Caps - 20” (508 mm) EXPXXUNV0020 X X X X
EZ-Flex Filter with End Caps - 24” (610 mm) EXPXXUNV0024 X X X X
Filter Pack (6 pack) - Washable - 16x25x1 (406x635x25 mm) KGAWF1306UFR X X X X
Filter Pack (6 pack) - Washable - 24x25x1 (610x635x25 mm) KGAWF1506UFR X X X X
Controls
Infinity™ Control User Interface SYSTXCCUID01-V X X X X
Infinity™ Control Zoning User Interface SYSTXCCUIZ01-V X X X X
Service Tools
Advanced Product Monitor - APM (CBP, Only) KGASD0301APM X X X X
ECM Motor Simulator Kit KGASD0301FMS X X X X
X -- Used with this model furnace
N/A -- Not used with this model furnace

5
AIR DELIVERY -- CFM (BOTTOM RETURN WITH FILTER)
(SW1-5 and SW4-3 set to OFF, except as indicated. See notes 1 and 2.)
INPUT
BTUH
Cooling Switch Settings External Static Pressure (E.S.P.)
SW2-3 SW2-2 SW2-1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
60000
OFF OFF OFF 1060 1070 1080 1080 1075 1065 1050 1035 1025 1010
OFF OFF ON 545 530 520 525 510
OFF ON OFF 710 710 710 695 690
OFF ON ON 875 880 890 895 895 890 885 880 870 855
ON OFF OFF 1060 1070 1080 1080 1075 1065 1050 1035 1025 1010
ON OFF ON 1235 1240 1250 1255 1255 1250 1230 1190 1155 1115
ON ON OFF 1235 1240 1250 1255 1255 1250 1230 1190 1155 1115
ON ON ON 1235 1240 1250 1255 1255 1250 1230 1190 1155 1115
Maximum Cooling Airflow21425 1425 1405 1370 1335 1300 1260 1225 1190 1155
High Heat Airflow31075 1085 1095 1095 1090 1080 1065 1050 1035 1020
Low Heat Airflow3855 855 860 870 870 865 860 855 845 785
INPUT
BTUH
Cooling Switch Settings External Static Pressure (E.S.P.)
SW2-3 SW2-2 SW2-1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
80000
OFF OFF OFF 1055 1065 1080 1075 1065 1050 1045 1035 1025 1005
OFF OFF ON 520 505 505 495 490
OFF ON OFF 665 685 680 660 665
OFF ON ON 885 895 905 900 900 895 885 875 860 845
ON OFF OFF 1055 1065 1080 1075 1065 1050 1045 1035 1025 1005
ON OFF ON 1245 1245 1255 1255 1260 1255 1250 1235 1220 1185
ON ON OFF 1245 1245 1255 1255 1260 1255 1250 1235 1220 1185
ON ON ON 1245 1245 1255 1255 1260 1255 1250 1235 1220 1185
Maximum Cooling Airflow21520 1485 1450 1415 1375 1335 1300 1265 1225 1190
High Heat Airflow31520 1485 1450 1415 1375 1335 1300 1265 1225 1190
Low Heat Airflow31055 1065 1080 1075 1065 1050 1045 1035 1025 1005
INPUT
BTUH
Cooling Switch Settings External Static Pressure (E.S.P.)
SW2-3 SW2-2 SW2-1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
100000
OFF OFF OFF 1815 1810 1805 1800 1785 1765 1745 1720 1710 1685
OFF OFF ON 765 775 755 730 710
OFF ON OFF 930 940 935 930 935
OFF ON ON 1095 1120 1120 1105 1095 1100 1085 1075 1055 1050
ON OFF OFF 1245 1270 1275 1280 1290 1280 1285 1270 1260 1245
ON OFF ON 1440 1445 1455 1445 1450 1440 1440 1425 1415 1405
ON ON OFF 1815 1810 1805 1800 1785 1765 1745 1720 1710 1685
ON ON ON 1815 1810 1805 1800 1785 1765 1745 1720 1710 1685
Maximum Cooling Airflow22055 2055 2050 2045 2030 2015 1995 1940 1870 1805
High Heat Airflow31495 1515 1515 1520 1525 1520 1515 1505 1490 1480
Low Heat Airflow31325 1335 1355 1365 1370 1355 1360 1345 1330 1310

6
AIR DELIVERY -- CFM (BOTTOM RETURN WITH FILTER) (CONTINUED)
(SW1-5 and SW4-3 set to OFF, except as indicated. See notes 1 and 2.)
INPUT
BTUH
Cooling Switch Settings External Static Pressure (E.S.P.)
SW2-3 SW2-2 SW2-1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
1200006
OFF OFF OFF 1850 1855 1860 1855 1850 1830 1805 1775 1750 1730
OFF OFF ON 765 745 740 705 680
OFF ON OFF 930 925 915 900 885
OFF ON ON 1095 1100 1110 1105 1085
ON OFF OFF 1265 1255 1265 1280 1275 1285 1270 1260 1250 1230
ON OFF ON 1465 1455 1470 1465 1465 1470 1455 1450 1435 1415
ON ON OFF 1850 1855 1860 1855 1850 1830 1805 1775 1750 1730
ON ON ON 2200 2200 2200 2190 2185 2170 2145 2085 1990 1890
Maximum Cooling Airflow22200 2200 2200 2190 2185 2170 2145 2085 1990 1890
High Heat Airflow31815 1820 1825 1820 1815 1795 1775 1745 1720 1700
Low Heat Airflow31640 1640 1645 1650 1645 1645 1630 1620 1600 1580
1. Nominal 350 CFM/ton cooling airflow is delivered with SW1-5 and SW4-2 set to OFF.
Set SW1-5 to ON for nominal 400 CFM/ton (+15% airflow).
Set SW4-3 to ON for nominal 325 CFM/ton (-7% airflow).
Set both SW1-5 and SW4-3 to ON for nominal 370 CFM/ton (+7% airflow).
2. Maximum cooling airflow is achieved when switches SW3-1, SW3-2, SW3-3 and SW1-5 are set to ON, and SW4-3 is set to OFF.
3. All heating CFM's are when low heat rise adjustment switch (SW1-3) and comfort/efficiency adjustment switch (SW1-4) are both set to OFF.
4. Ductwork must be sized for high-heating CFM within the operational range of E.S.P. Operation within the blank areas of the chart is not recommended
because high-heat operation will be above 1.0 E.S.P.
5. All airflows on 21" (533 mm) casing size furnaces are 5% less on side return only installations.
6. Side returns for 24.5" (622 mm) casing sizes require two sides, or side and bottom, to allow sufficient airflow at the return of the furnace.

7
MAXIMUM EQUIVALENT VENT LENGTH -- FT. (M)
NOTE: Maximum Equivalent Vent Length (MEVL) does NOT include elbows or terminations. Use Table 2 - Deductions from
Maximum Equivalent Vent Length to determine allowable vent length for each application.
Table 1 – Maximum Equivalent Vent Length -- Ft. (M)
0 to 4500 Ft. (0 to 1370 M) Altitude
Altitude
FT (M)
Unit Size
BTU/Hr
DIRECT VENT (2-PIPE) AND NON---DIRECT VENT (1---PIPE)
Vent Pipe Diameter (in.)
1-1/2 22-1/2 3 4
0 to 2000
(0 to 610)
40,000*250 (15.2) 210 (64.0) 250 (76.2) NA NA
60,000 30 (9.1) 135 (41.1) 235 (71.6) 265 (80.8) NA
80,000 20 (6.1) 70 (21.3) 175 (53.3) 235 (71.6) 265 (80.8)
100,000 NA 25 (7.6) 110 (33.5) 235 (71.6) 265 (80.8)
120,000 NA NA 15 (4.6) 100 (30.5) 250 (76.2)
2001 to 3000
(610 to 914)
40,000* 45 (13.7) 198 (60.4) 232 (70.7) NA NA
60,000 27 (8.2) 127 (38.7) 222 (67.7) 250 (76.2) NA
80,000 17 (5.2) 64 (19.5) 165 (50.3) 222 (67.7) 249 (75.9)
100,000 NA 22 (6.7) 104 (31.7) 223 (68.0) 250 (76.2)
120,000 NA NA 11 (3.4) 93 (28.3) 237 (72.2)
3001 to 4000
(914 to 1219)
40,000* 39 (11.9) 184 (56.1) 214 (65.2) NA NA
60,000 23 (7.0) 119 (36.3) 210 (64.0) 235 (71.6) NA
80,000 15 (4.6) 59 (18.0) 155 (47.2) 210 (64.0) 232 (70.7)
100,000 NA 19 (5.8) 98 (29.9) 211 (64.3) 236 (71.9)
120,000 NA NA 8(2.4) 86 (26.2) 224 (68.3)
4001 to 4500
(1219 to
1370)
40,000* 36 (11.0) 177 (53.9) 205 (62.5) NA NA
60,000 21 (6.4) 115 (35.1) 204 (62.2) 228 (69.5) NA
80,000 14 (4.3) 56 (17.1) 150 (45.7) 202 (61.6) 224 (68.3)
100,000 NA 17 (5.2) 94 (28.7) 205 (62.5) 229 (69.8)
120,000 NA NA NA 83 (25.3) 217 (66.1)
* Not all families have these models.
NOTES: See notes at end of venting tables.
See Table 3 for altitudes over 4500 ft. (1370 M)
Table 2 – Deductions from Maximum Equivalent Vent Length -- Ft. (M)
Pipe Diameter (in): 1-1/2 22-1/2 3* 4*
Mitered 90º Elbow 8(2.4) 8(2.4) 8(2.4) NA NA NA NA
Medium Radius 90º Elbow 5(1.5) 5(1.5) 5(1.5) NA NA NA NA
Long Radius 90º Elbow 3(0.9) 3(0.9) 3(0.9) 3(0.9) 3(0.9)
Mitered 45º Elbow 4(1.2) 4(1.2) 4(1.2) NA NA NA NA
Medium Radius 45º Elbow 2.5 (0.8) 2.5 (0.8) 2.5 (0.8) NA NA NA NA
Long Radius 45º Elbow 1.5 (0.5) 1.5 (0.5) 1.5 (0.5) 1.5 (0.5) 1.5 (0.5)
Tee 16 (4.9) 16 (4.9) 16 (4.9) 16 (4.9) 16 (4.9)
* Note: 3 --- and 4 --- in. Vent pipe systems require long radius elbows.
Venting System Length Calculations
The maximum length for each vent pipe (inlet or exhaust) equals the Maximum Equivalent Vent Length (MEVL) from Table 1 or Table 3
minus the number of elbows multiplied by the deduction for each elbow in Table 2.
Standard vent terminations and concentric vent terminations count for zero deductions.
Example
A direct--vent 60,000 Btuh furnace installed at 2100 ft. (640 M ) with 2--in. (51 mm) vent piping. Venting system includes, FOR EACH
PIPE, (3) 90_long radius elbows, (2) 45_long radius elbows and a concentric vent kit.
Maximum Equivalent Vent Length =127 ft. (From Table 1)
Deduct (3) 90 long radius 3 x 3 ft. =- 9 ft. (From Table 2)
Deduct (2) 45 long radius 2 x 1.5 ft. =- 3 ft. (From Table 2)
Maximum Vent Length =115 ft. For EACH vent or inlet pipe

8
MAXIMUM EQUIVALENT VENT LENGTH -- FT. (M) (CONTINUED)
NOTE: Maximum Equivalent Vent Length (MEVL) does NOT include elbows or terminations. Use Table 2 - Deductions from
Maximum Equivalent Vent Length to determine allowable vent length for each application.
Table 3 – Maximum Equivalent Vent Length -- Ft. (M)
4501 to 10,000 Ft. (1371 to 3048 M) Altitude
Altitude
FT (M) Unit Size
DIRECT VENT (2-PIPE) AND NON---DIRECT VENT (1---PIPE)
Vent Pipe Diameter
1-1/2 22-1/2 3 4
4501 to 5000
(1370 to
1524)
40,000* 33 (10.1) 171 (52.1) 196 (59.7) NA NA
60,000 20 (6.1) 111 (33.8) 198 (60.4) 221 (67.4) NA
80,000 13 (4.0) 54 (16.5) 146 (44.5) 195 (59.4) 216 (65.8)
100,000 NA 16 (4.9) 91 (27.7) 200 (61.0) 222 (67.7)
120,000 NA NA NA 80 (24.4) 211 (64.3)
5001 to 6000
(1524 to
1829)
40,000* 27 (8.2) 158 (48.2) 179 (54.6) NA NA
60,000 16 (4.9) 103 (31.4) 186 (56.7) 207 (63.1) NA
80,000 11 (3.4) 49 (14.9) 137 (41.8) 183 (55.8) 200 (61.0)
100,000 NA 12 (3.7) 85 (25.9) 188 (57.3) 208 (63.4)
120,000 NA NA NA 74 (22.6) 199 (60.7)
6001 to 7000
(1829 to
2134)
40,000* 21 (6.4) 145 (44.2) 162 (49.4) NA NA
60,000 13 (4.0) 96 (29.3) 174 (53.0) 194 (59.1) NA
80,000 NA 44 (13.4) 120 (36.6) 171 (52.1) 185 (56.4)
100,000 NA 10 (3.0) 79 (24.1) 178 (54.3) 195 (59.4)
120,000 NA NA NA 68 (20.7) 187 (57.0)
7001 to 8000
(2134 to
2438)
40,000* 15 (4.6) 133 (40.5) 146 (44.5) NA NA
60,000 10 (3.0) 89 (27.1) 163 (49.7) 181 (55.2) NA
80,000 NA 40 (12.2) 120 (36.6) 159 (48.5) 170 (51.8)
100,000 NA NA 73 (22.3) 167 (50.9) 182 (55.5)
120,000 NA NA NA 62 (18.9) 175 (53.3)
8001 to 9000
(2438 to
2743)
40,000* 10 (3.0) 121 (36.9) 130 (39.6) NA NA
60,000 7(2.1) 82 (25.0) 152 (46.3) 168 (51.2) NA
80,000 NA 35 (10.7) 111 (33.8) 148 (45.1) 156 (47.5)
100,000 NA NA 67 (20.4) 157 (47.9) 170 (51.8)
120,000 NA NA NA 56 (17.1) 164 (50.0)
9001 to
10,000
(2743 to
3048)
40,000* 5(1.5) 110 (33.5) 115 (35.1) NA NA
60,000 NA 76 (23.2) 142 (43.3) 156 (47.5) NA
80,000 NA 31 (9.4) 103 (31.4) 137 (41.8) 142 (43.3)
100,000 NA NA 62 (18.9) 147 (44.8) 157 (47.9)
120,000 NA NA NA 51 (15.5) 153 (46.6)
* Not all families have these models.
NOTES:
1. 3 --- and 4 --- in. Vent pipe systems require long radius elbows.
2. Total equivalent vent lengths under 10’ for 40,000 BTUH furnaces, require the use of an outlet choke plate at altitudes 0 to 2000 ft (0 to 610 M).
Failure to use an outlet choke when required may result in flame disturbance or flame sense lockout.
3. Vent sizing for Canadian installations over 4500 ft (1370m) above sea level are subject to acceptance by the local authorities having jurisdiction.
4. NA --- Not allowed; pressure switch will not close, or flame disturbance may result.
5. Do not use pipe size greater than those specified in table or incomplete combustion, flame disturbance, or flame sense lockout may occur.
6. Size both the combustion ---air and vent pipe independently, then use the larger diameter for both pipes.
7. Assume the two 45_elbows equal one 90_elbow. Wide radius elbows are desirable and may be required in some cases.
8. Elbows and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.
9. The minimum pipe length is 5 ft. (1.5 M) for all applications.
10. Use 3 ---in. (76 mm) diameter vent termination kit for installations requiring 4---in. (102 mm) diameter pipe.

9
MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH INSULATION TABLE -- FT. / M
Maximum Length of Uninsulated and Insulated Vent Pipe-Ft (M)
Two
Stage
Furnace
High Heat
Input
Winter
Design
Temp °F
(°C)
Pipe
Length in
Ft. & M
No Insulation 3/8-in. (9.5 mm) 1/2-in. (12.7 mm)
Pipe Diameter-in. (mm) Pipe Diameter-in. (mm) Pipe Diameter-in. (mm)
1.5 2.0 2.5 3.0 4.0 1.5 2.0 2.5 3.0 4.0 1.5 2.0 2.5 3.0 4.0
(38) (51) (64) (76) (102) (38) (51) (64) (76) (102) (38) (51) (64) (76) (102)
40000*
20 (-10) Ft. 40.0 35.0 35.0 N/A N/A 50.0 104.0 94.0 N/A N/A 50.0 122.0 110.0 N/A N/A
M12.2 10.7 10.7 N/A N/A 15.2 31.7 28.7 N/A N/A 15.2 37.2 33.5 N/A N/A
0 (-20) Ft. 19.0 14.0 12.0 N/A N/A 50.0 61.0 54.0 N/A N/A 50.0 74.0 65.0 N/A N/A
M5.8 4.3 3.7 N/A N/A 15.2 18.6 16.5 N/A N/A 15.2 22.6 19.8 N/A N/A
-20 (-30) Ft. 9.0 3.0 1.0 N/A N/A 50.0 41.0 35.0 N/A N/A 50.0 51.0 43.0 N/A N/A
M2.7 0.9 0.3 N/A N/A 15.2 12.5 10.7 N/A N/A 15.2 15.5 13.1 N/A N/A
-40 (-40) Ft. 3.0 0.0 0.0 N/A N/A 39.0 29.0 23.0 N/A N/A 48.0 37.0 30.0 N/A N/A
M0.9 0.0 0.0 N/A N/A 11.9 8.8 7.0 N/A N/A 14.6 11.3 9.1 N/A N/A
60000
20 (-10) Ft. 30.0 51.0 51.0 45.0 N/A 30.0 135.0 138.0 120.0 N/A 30.0 135.0 162.0 141.0 N/A
M9.1 15.5 15.5 13.7 N/A 9.1 41.1 42.1 36.6 N/A 9.1 41.1 49.4 43.0 N/A
0 (-20) Ft. 30.0 24.0 23.0 16.0 N/A 30.0 93.0 82.0 69.0 N/A 30.0 111.0 98.0 83.0 N/A
M9.1 7.3 7.0 4.9 N/A 9.1 28.3 25.0 21.0 N/A 9.1 33.8 29.9 25.3 N/A
-20 (-30) Ft. 18.0 11.0 9.0 1.0 N/A 30.0 65.0 56.0 44.0 N/A 30.0 79.0 68.0 55.0 N/A
M5.5 3.4 2.7 0.3 N/A 9.1 19.8 17.1 13.4 N/A 9.1 24.1 20.7 16.8 N/A
-40 (-40) Ft. 10.0 3.0 0.0 0.0 N/A 30.0 48.0 40.0 29.0 N/A 30.0 59.0 50.0 38.0 N/A
M3.0 0.9 0.0 0.0 N/A 9.1 14.6 12.2 8.8 N/A 9.1 18.0 15.2 11.6 N/A
80000
20 (-10) Ft. 20.0 64.0 64.0 56.0 47.0 20.0 70.0 173.0 150.0 125.0 20.0 70.0 175.0 177.0 147.0
M6.1 19.5 19.5 17.1 14.3 6.1 21.3 52.7 45.7 38.1 6.1 21.3 53.3 53.9 44.8
0 (-20) Ft. 20.0 32.0 30.0 22.0 11.0 20.0 70.0 104.0 87.0 67.0 20.0 70.0 124.0 104.0 82.0
M6.1 9.8 9.1 6.7 3.4 6.1 21.3 31.7 26.5 20.4 6.1 21.3 37.8 31.7 25.0
-20 (-30) Ft. 20.0 17.0 14.0 6.0 0.0 20.0 70.0 71.0 57.0 40.0 20.0 70.0 86.0 71.0 52.0
M6.1 5.2 4.3 1.8 0.0 6.1 21.3 21.6 17.4 12.2 6.1 21.3 26.2 21.6 15.8
-40 (-40) Ft. 15.0 7.0 5.0 0.0 0.0 20.0 61.0 52.0 40.0 24.0 20.0 70.0 64.0 50.0 33.0
M4.6 2.1 1.5 0.0 0.0 6.1 18.6 15.8 12.2 7.3 6.1 21.3 19.5 15.2 10.1
100000
20 (-10) Ft. N/A 25.0 79.0 70.0 59.0 N/A 25.0 110.0 186.0 155.0 N/A 25.0 110.0 219.0 182.0
MN/A 7.6 24.1 21.3 18.0 N/A 7.6 33.5 56.7 47.2 N/A 7.6 33.5 66.8 55.5
0 (-20) Ft. N/A 25.0 40.0 31.0 19.0 N/A 25.0 110.0 109.0 86.0 N/A 25.0 110.0 131.0 104.0
MN/A 7.6 12.2 9.4 5.8 N/A 7.6 33.5 33.2 26.2 N/A 7.6 33.5 39.9 31.7
-20 (-30) Ft. N/A 23.0 21.0 13.0 0.0 N/A 25.0 91.0 74.0 54.0 N/A 25.0 110.0 90.0 68.0
MN/A 7.0 6.4 4.0 0.0 N/A 7.6 27.7 22.6 16.5 N/A 7.6 33.5 27.4 20.7
-40 (-40) Ft. N/A 13.0 10.0 1.0 0.0 N/A 25.0 68.0 53.0 35.0 N/A 25.0 83.0 66.0 46.0
MN/A 4.0 3.0 0.3 0.0 N/A 7.6 20.7 16.2 10.7 N/A 7.6 25.3 20.1 14.0
120000
20 (-10) Ft. N/A N/A 15.0 85.0 73.0 N/A N/A 15.0 100.0 190.0 N/A N/A 15.0 100.0 224.0
MN/A N/A 4.6 25.9 22.3 N/A N/A 4.6 30.5 57.9 N/A N/A 4.6 30.5 68.3
0 (-20) Ft. N/A N/A 15.0 41.0 29.0 N/A N/A 15.0 100.0 109.0 N/A N/A 15.0 100.0 131.0
MN/A N/A 4.6 12.5 8.8 N/A N/A 4.6 30.5 33.2 N/A N/A 4.6 30.5 39.9
-20 (-30) Ft. N/A N/A 15.0 20.0 7.0 N/A N/A 15.0 94.0 71.0 N/A N/A 15.0 114.0 88.0
MN/A N/A 4.6 6.1 2.1 N/A N/A 4.6 28.7 21.6 N/A N/A 4.6 34.7 26.8
-40 (-40) Ft. N/A N/A 15.0 7.0 0.0 N/A N/A 15.0 69.0 48.0 N/A N/A 15.0 85.0 62.0
MN/A N/A 4.6 2.1 0.0 N/A N/A 4.6 21.0 14.6 N/A N/A 4.6 25.9 18.9
* Not all families have these models.
* Pipe length (ft) specified for maximum pipe lengths located in unconditioned spaces. Pipes located in unconditioned space cannot exceed total allowable pipe
length calculated from Table 1 or 3.
† Insulation thickness based on R value of 3.5 per in.

10
RETURN AIR TEMPERATURE
This furnace is designed for continuous return--air minimum temperature of 60_F(15_C) db or intermittent operation down to 55_F(13_C)
db such as when used with a night setback thermometer. Return--air temperature must not exceed 80_F(27_C) db. Failure to follow these
return air limits may affect reliability of heat exchangers, motors and controls.
60
80 / 27˚C
/ 16˚C
SUPPLY AIR
A10490
MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS
POSITION CLEARANCE
Rear 0(0mm)
Front (Combustion air openings in furnace and in structure) 1in.(25mm)
Required for service *24 in. (610 mm)
All Sides of Supply Plenum 1in.(25mm)
Sides 0(0mm)
Vent 0(0mm)
Top of Furnace 1in. (25mm)
* Recommended
COMBUSTION--AIR PIPE FOR NON--DIRECT (1--PIPE) VENT APPLICATION
FIELD-SUPPLIED
2-IN. (51 mm) DIA.
PVC PIPE
FIELD-SUPPLIED
2-IN. (51 mm) DIA.
TIGHT RADIUS
PVC 90°ELBOW
12” (300 mm) Minimum
A11487