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 Infinity 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 five 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.
SAll sizes meet ENERGY STARRVersion 4.0 criteria for gas
furnaces: 95+ AFUE; AMACF electrical rating; 2% or less
cabinet airflow leakage.
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 Air Purifier 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.
SCertified to leak 2% or less of nominal air conditioning CFM
delivered when pressurized to 1--in. water column with all
present air inlets, air outlets, and condensate drain port(s) sealed.
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
SAP ORDERING
NO.
CASING
DIMENSIONS
(IN.)
RATED HEATING
OUTPUT†(BTUH) HEATING AIRFLOW COOLING
CFM @ 0.5
ESP
MOTOR HP
(VARIABLE
SPEED)
MEDIA
CABINET
SUPPLIED
(IN.)
APPROX.
SHIP WT.
(LB)
H D W High Low AFUE
CFM‡
(Low
Heating)
CFM
(High
Heating)
Rated
High Heating
ESP
59TN6A060V17--14 35 30 17.5 58,000 38,000 96.3% 855 1075 0.12 510 - 1335 1/2 16 140
59TN6A080V17--14 35 30 17.5 78,000 50,000 96.2% 1060 1500 0.15 490 - 1375 1/2 16 150
59TN6A080V21--20 35 30 21.0 78,000 51,000 96.7% 1095 1345 0.15 750 - 1945 120 155
59TN6A100V21--22 35 30 21.0 98,000 63,000 96.1% 1385 1575 0.20 715 - 2160 120 165
59TN6A120V24--22 35 30 24.5 117,000 76,000 96.7% 1640 1820 0.20 885 - 2185 124 189
† Capacity in accordance with DOE test procedures. See rating plate.
‡Heating CFM at factory default blower motor heating settings.
ESP --- External Static Pressure
FEATURES AND BENEFITS
Comfort Heat TechnologyRfeature — This feature with
Adaptive Control is a proprietary function that promotes
homeowner comfort through two stages of heating. This Carrier
furnace offers a patented algorithm that continually monitors and
adjusts furnace operation by looking at both current and past
conditions to determine the most effective stage of heating and the
amount of time to run each stage, every cycle.
Ideal Humidity SystemRTechnology — The Ideal Humidity
system actively controls both temperature and humidity in the
home to provide the best comfort all year long. Other systems
depend on heating or cooling demand to manage the moisture in
the air. But, Ideal Humidity gives the homeowner the right amount
of humidity day and night, even in mild weather. No other
manufacturer can do this! Ideal Humidity saves energy, too. By
keeping humidity under control, the homeowner can set their
thermostat lower to stay comfortable and save energy.
SmartEvaptTechnology — When paired with a compatible
thermostat, this dehumidification feature overrides the cooling
blower off-delay when there is a call for dehumidification. By
deactivating the blower off-delay, SmartEvap technology prevents
condensate that remains on the coil after a dehumidification cycle
from re-humidifying throughout the home. This results in reduced
humidity and a more comfortable indoor environment for the
homeowner.
Unlike competitive systems, SmartEvap technology only overrides
the cooling blower off--delay when humidity control is needed.
Once humidity is back in control, SmartEvap re-enables the
energy-saving cooling blower off-delay.
ComfortFantTechnology — Sometimes the constant fan setting
on a standard furnace system can actually reduce homeowner
comfort by providing too much or too little air! Comfort Fan
technology improves comfort all year long by allowing the
homeowner to select the continuous fan speed of their choice using
a compatible thermostat.
HYBRID HEATRDual Fuel System — This system can provide
more control over your monthly energy bills by automatically
selecting the most economical method of heating. With HYBRID
HEAT components, our system automatically switches between the
gas furnace and the electric heat pump as outside temperatures
change to maintain greater efficiency and comfort than with any
traditional single-source heating system. The heat pump also
delivers high-efficiency cooling in the summer.
Power HeattIgniter — Carrier’s unique SiN igniter is not only
physically robust but it is also electrically robust. It is capable of
running at line voltage and does not require complex voltage
regulators as do other brands. This unique feature further enhances
the gas furnace reliability and continues Carrier’s tradition of
technology leadership and innovation in providing a reliable and
durable product.
Full-Featured, Communicating, Variable Speed Motors —Our
ECMs (Electronically Commutated Motors) provide variable-speed
operation to optimize comfort levels in the home year round;
features such as passive/active dehumidification, ramping profiles,
constant air flow and quiet operation. They can provide cooling
match enhancements to increase the effective SEER of select
Carrier air conditioner or heat pump system, and feature the highest
efficiency of all indoor fan motors.
Reliable Heat Exchanger Design — The aluminized steel,
clamshell primary heat exchanger was re--engineered to achieve
greater efficiency out of a smaller size. The first two passes of the
heat exchanger are based on the current 80% product, a design
with more than ten years of field-proven performance and success.
These innovations, paired with the continuation of a crimped,
no-weld seam create an efficient, robust design for this essential
component.
The condensing heat exchanger, a stainless steel fin and tube
design, is positioned in the furnace to extract additional heat.
Stainless steel coupling box componentry between heat exchangers
has exceptional corrosion resistance in both natural gas and
propane applications.
Media Filter Cabinet — Enhanced indoor air quality in the home
is made easier with our media filter cabinet—a standard accessory
on all deluxe furnaces. When installed as a part of the system, this
cabinet allows for easy and convenient addition of a Carrier high
efficiency air filter.
4-Way Multipoise Design — One model for all applications –
there is no need to stock special downflow or horizontal models
when one unit will do it all. The new heat exchanger design allows
these units to achieve the certified AFUE in all positions.
Direct or Single-pipe Venting, or Optional Ventilated
Combustion Air — This furnace can be installed as a 2-pipe
(Direct Vent) furnace, in an optional ventilated combustion air
application, or in single-pipe, non-direct vent applications. This
provides added flexibility to meet diverse installation needs.
Sealed Combustion System — This furnace brings in combustion
air from outside the furnace, which results in especially quiet
operation. By sealing the entire combustion vestibule, the entire
furnace can be made quieter, not just the burners.
Insulated Casing — Foil-faced insulation in the heat exchanger
section of the casing minimizes heat loss. The acoustical insulation
in the blower compartment reduces air and motor noise for quiet
operation.
Monoport Burners — The burners are specially designed and
finely tuned for smooth, quiet combustion and economical
operation.
Bottom Closure — Factory-installed for side return; easily
removable for bottom return. The multi-use bottom closure can
also serve for roll-out protection in horizontal applications, and act
as the bottom closure for the optional return air base accessory.
Blower Access Panel Switch — Automatically shuts off 115-v
power to furnace whenever blower access panel is opened.
Quality Registration — Our furnaces are engineered and
manufactured under an ISO 9001 registered quality system.
Certifications — This furnace is CSA (AGA and CGA) design
certified for use with natural and propane gases. The furnace is
factory--shipped for use with natural gas. A CSA listed gas
conversion kit is required to convert furnace for use with propane
gas. The efficiency is GAMA efficiency rating certified. This
furnace meets California Air Quality Management District
emission requirements.
59TN6A

3
SPECIFICATIONS
Heating Capacity and Efficiency 060-14 080-14 080-20 100-22 120-22
Input
High
Heat (BTUH) 60,000 80,000 80,000 100,000 120,000
Low
Heat (BTUH) 39,000 52,000 52,000 65,000 78,000
Output
High
Heat (BTUH) 58,000 78,000 78,000 98,000 117,000
Low
Heat (BTUH) 38,000 50,000 51,000 63,000 76,000
Efficiency AFUE % (ICS) 96.3 96.2 96.7 96.1 96.7
Certified Temperature
Rise Range ºF (ºC)
High Heat 35 - 65
(19 - 36)
40 - 70
(22 - 39)
40 - 70
(22 - 39)
45 - 75
(25 - 42)
45 - 75
(25 - 42)
Low Heat 30 - 60
(17 - 33)
30 - 60
(17 - 33)
30 - 60
(17 - 33)
30 - 60
(17 - 33)
30 - 60
(17 - 33)
Airflow Capacity and Blower Data 060-14 080-14 080-20 100-22 120-22
Certified External Static
Pressure (in. w.c.)
Heating 0.12 0.15 0.15 0.20 0.20
Cooling 0.5 0.5 0.5 0.5 0.5
Airflow Delivery
@ Rated ESP (CFM)
High Heat 1075 1500 1345 1575 1820
Low Heat 855 1060 1095 1385 1640
Cooling 1335 1375 1945 2160 2185
Cooling Capacity (tons)
@ 400, 350 CFM/ton
400 CFM/ton 33.5 4.5 55.5
350 CFM/ton 3.5 45.5 6 6
Direct-Drive Motor Type Electronically Commutated Motor (ECM)
Direct-Drive Motor HP 1/2 1/2 111
Motor Full Load Amps 7.7 7.7 12.8 12.8 12.8
RPM Range 300 - 1300
Speed Selections Variable (Communicating)
Blower Wheel Dia x Width in. 11 x 8 11 x 8 11x10 11 x 10 11 x 11
Air Filtration System Factory Supplied Media Cabinet
Field Supplied Filter
Filter Used for Certified Watt Data KGAWF1306UFR KGAWF1406UFR KGAWF1506UFR
Electrical Data 060-14 080-14 080-20 100-22 120-22
Input Voltage Volts-Hertz-Phase 115-60-1
Operating Voltage Range Min-Max 104-127
Maximum Input Amps Amps 8.5 8.5 13.6 13.7 13.7
Unit Ampacity Amps 11.5 11.5 17.9 18.0 18.0
Minimum Wire Size AWG 14 14 12 12 12
Maximum Wire Length
@ Minimum Wire Size
Feet 32 32 32 31 31
(M) (9.8) (9.8) (9.8) (9.4) (9.4)
Maximum Fuse/Ckt Bkr
(Time-Delay Type Recommen-
ded)
Amps 15 15 20 20 20
Transformer Capacity (24vac
output) 40 VA
External Control Power
Available
Heating 24.3 VA
Cooling 34.6 VA
Controls 060-14 080-14 080-20 100-22 120-22
Gas Connection Size 1/2" - NPT
Burners (Monoport) 34456
Gas Valve (Redundant) Manufacturer White Rogers
Minimum Inlet Gas pressure (in. wc) 4.5
Maximum Inlet Gas pressure (in. wc) 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 180 170 200 180 160
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 R, W/W1, W2 Y/Y2, Y1, G, Com 24V, DHUM
Accessory Connections EAC (115vac); HUM (24vac); 1-stg AC (via Y/Y2)
59TN6A

4
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
59TN6A

5
ACCESSORIES
Part Number Used With Notes
KGADC0101BVC All 1
KGAVT0701CVT See Venting Tables 1
KGAVT0801CVT See Venting Tables 1
KGAVT0101BRA See Venting Tables 1, 2
KGAVT0201BRA See Venting Tables 1, 2
Part Number Used With Notes
KGAHT0201CFP All 7
-llAPFC1010THAGK
-llACVP0110DAAGK
KGACK0101HCK All DV Horizontal -
P908-0001 All 6
Part Number Used With Notes
-llALLA1020BSAGK
-llALLA1010ADAGK
-llALLA1020ADAGK
-llALLA1030ADAGK
KGARP0301B14 14.2" Wide Furnaces 7
KGARP0301B17 17.5" Wide Furnaces 7
KGARP0301B21 21" Wide Furnaces 7
KGARP0301B24 24.5" Wide Furnaces 7
KGAAD0101MEC 20"x25" IAQ Devices 7
KGAAD0201MEC 24"x25" IAQ Devices 7
Part Number Used With Notes
-llAPSV1025PNAGK
-llAPSV1044NPAGK
KGAHA0150N42 All 4, 6
KGAHA0250N43 All 4, 6
KGAHA0350N44 All 4
KGAHA0450N45 All 4
KGAHA0550N46 All 4
KGAHA1550N47 All 4
KGAHA1650N48 All 4
KGAHA0650P54 All 4, 6
KGAHA0750P55 All 4
KGAHA0850P56 All 4, 6
KGAHA5750125 All 4, 6
KGAHA5750130 All 4, 6
Part Number Used With Notes
-llASMF1030DSAGK
-llAMPA1030DSAGK
-llAV-10DIUCCXTSYS
-llAV-10ZIUCCXTSYS
Part Number Used With Notes
KGAWF1306UFR All 5
KGAWF1506UFR All 5
EXPXXFIL0016 EZXCAB--1016 3, 5
EXPXXFIL0020 EZXCAB--1020 3, 5
EXPXXFIL0024 EZXCAB--1024 3, 5
EXPXXUNV0016 EZXCAB--1016 3, 5
EXPXXUNV0020 EZXCAB--1020 3, 5
EXPXXUNV0024 EZXCAB--1024 3, 5
FILXXCAR0016 FILCABXL1016 3, 5
FILXXCAR0020 FILCABXL1020 3, 5
FILXXCAR0024 FILCABXL2024 3, 5
GAPAAXCC1625 Upto1600CFM 5
GAPAAXCC2025 Upto2000CFM 5
GAPCCCAR1625 GAPAAXCC1625-A08 5
GAPCCCAR2025 GAPAAXCC2025-A08 5
PGAPXX1625 Upto1600CFM 5,7
PGAPXX2025 Upto2000CFM 5,7
PGAPAXXCAR1625 GAPAAXCC1625 5, 7
PGAPAXXCAR2025 GAPAAXCC2025 5, 7
Notes:
2. Not for use with Concentric Vent Termination Kits.
3. Last 2 digits of Part Number indicate filter size.
4. Last 2 digits of Part Number indicate orifice size.
5. Choose IAQ/filter assembly appropriate for the designed system airflow and static pressure. Use optional IAQ Device Duct Adapters as required.
6. Available from Replacement Components group.
7. Kit coming soon. Expected availability 2Q2012.
1. CSA requires that a termination kit be used. See latest PD for pipe and kit size selection. The qualified installer or agency must use only
factory-authorized kits when modifying these furnaces.
Carrier Performance Air Purifier 16 x 25
20 x 25
Carrier Performance Air Purifier Replacement Filter 16 x 25
20 x 25
Carrier Infinity Air Purifier 16 x 25
20 x 25
Carrier Infinity Air Purifier Replacement Filter 16 x 25
20 x 25
Cartridge Media Filter
16-in.
20-in.
24.in.
EZ-Flex Filter with End Caps
16-in.
20-in.
24-in.
Filter Pack (6 pack) - Washable 16 x 25 x 1
24 x 25 x 1
EZ-Flex Filter
16-in.
20-in.
24-in.
IAQ Accessories
ECM Motor Simulator Kit
Advanced Product Monitor - APM
Infinity Control User Interface
Infinity Control Zoning User Interface
#54 LP
#55 LP
#56 LP
1.25 mm LP
1.30 mm LP
Control Accessories
Gas Orifice Kit
#42 Natural Gas
#43 Natural Gas
#44 Natural Gas
#45 Natural Gas
#46 Natural Gas
#47 Natural Gas
#48 Natural Gas
Gas Conversion Accessories
Gas Conversion Kit - Nat to LP; Var-spd Products
Gas Conversion Kit - LP to Nat; Var-spd Products
Return Air Base (Upflow applications) - Painted
14.2-in. wide
17.5-in. wide
21-in. wide
24.5-in. wide
IAQ Device Duct Adapters (side return) - Painted 20-in IAQ to 16-in side return
24-in IAQ to 16-in side return
Furnace Base Kit for Combustible Floors
Coil Adapters Kits - Painted
No Offset
Single Offsett
Double Offset
Condensate Drainage Accessories
Freeze Protect Kit - Heat Patch for Drain Trap
Freeze Protect Kit - Heat Tape
CPVC to PVC Drain Adapter - 1/2-in. CPVC to 3/4-in. PVC
Horizontal Trap Grommet for Direct Vent Applications
Condensate Neutralizer Kit
Venting Accessories
Vent Kit - Through the Cabinet
Vent Terminal - Concentric 2-in.
3-in.
Vent Terminal Bracket 2-in.
3-in.
Ductwork Adapter Accessories
59TN6A

6
AIR DELIVERY
COOLING4AND HEATING AIR DELIVERY - CFM (Bottom Return5With Filter)
(SW1-5 and SW4-3 set to OFF, except as indicated. See notes 1 and 2.)
Unit Size Clg/CF Switch Settings External Static Pressure (ESP)
SWx-3 SWx-2 SWx-1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
060-14
Clg Default: OFF OFF OFF 1060 1070 1080 1080 1075 1065 1050 1035 1025 1010
CF Default: OFF OFF OFF 545 530 520 525 510 Seenote4
Cooling (SW2)
Cont Fan
(SW3)
OFF OFF ON 545 530 520 525 510 Seenote4
OFF ON OFF 710 710 710 695 690 Seenote4
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
Clg SW2: Maximum Clg Airflow 21425 1425 1405 1370 1335 1300 1260 1225 1190 1155
Heating
(SW1)
High Heat Airflow 31075 1085 1095 1095 1090 1080 1065 1050 1035 1020
Low Heat Airflow 3855 855 860 870 870 865 860 855 845 785
Unit Size Clg/CF Switch Settings External Static Pressure (ESP)
SWx-3 SWx-2 SWx-1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
080-14
Clg Default: OFF OFF OFF 1055 1065 1080 1075 1065 1050 1045 1035 1025 1005
CF Default: OFF OFF OFF 520 505 505 495 490 Seenote4
Cooling (SW2)
Cont Fan
(SW3)
OFF OFF ON 520 505 505 495 490 Seenote4
OFF ON OFF 665 685 680 660 665 Seenote4
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
Clg SW2: Maximum Clg Airflow 21520 1485 1450 1415 1375 1335 1300 1265 1225 1190
Heating
(SW1)
High Heat Airflow 31520 1485 1450 1415 1375 1335 1300 1265 1225 1190
Low Heat Airflow 31055 1065 1080 1075 1065 1050 1045 1035 1025 1005
Unit Size Clg/CF Switch Settings External Static Pressure (ESP)
SWx-3 SWx-2 SWx-1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
080-20
Clg Default: OFF OFF OFF 1745 1755 1755 1760 1755 1750 1745 1725 1705 1685
CF Default: OFF OFF OFF 700 710 750 725 750 Seenote4
Cooling (SW2)
Cont Fan
(SW3)
OFF OFF ON 700 710 750 725 750 Seenote4
OFF ON OFF 830 860 870 890 960 Seenote4
OFF ON ON 1045 1045 1060 1070 1070 1070 1095 1090 1080 1070
ON OFF OFF 1215 1220 1245 1240 1235 1235 1225 1220 1235 1235
ON OFF ON 1370 1370 1390 1390 1400 1395 1400 1390 1390 1385
ON ON OFF 1745 1755 1755 1760 1755 1750 1745 1725 1705 1685
ON ON ON 1745 1755 1755 1760 1755 1750 1745 1725 1705 1685
Clg SW2: Maximum Clg Airflow 21920 1920 1945 1945 1945 1960 1950 1940 1915 1900
Heating
(SW1)
High Heat Airflow 31340 1355 1370 1385 1380 1385 1400 1400 1385 1380
Low Heat Airflow 31080 1115 1115 1120 1125 1135 1125 1120 1125 1110
See notes at end of table.
59TN6A

7
AIR DELIVERY (CONTINUED)
COOLING4AND HEATING AIR DELIVERY - CFM (Bottom Return5With Filter)
(SW1-5 and SW4-3 set to OFF, except as indicated. See notes 1 and 2.)
Unit Size Clg/CF Switch Settings External Static Pressure (ESP)
SWx-3 SWx-2 SWx-1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
100-22
Clg Default: OFF OFF OFF 1820 1825 1840 1845 1840 1835 1825 1805 1780 1770
CF Default: OFF OFF OFF 750 740 745 730 715 Seenote4
Cooling (SW2)
Cont Fan
(SW3)
OFF OFF ON 750 740 745 730 715 Seenote4
OFF ON OFF 900 900 915 910 905 Seenote4
OFF ON ON 1070 1075 1095 1095 1090 1085 1095 1080 1065 1070
ON OFF OFF 1280 1285 1305 1305 1310 1305 1295 1300 1290 1285
ON OFF ON 1440 1445 1465 1465 1470 1485 1480 1485 1475 1460
ON ON OFF 1820 1825 1840 1845 1840 1835 1825 1805 1780 1770
ON ON ON 2135 2140 2140 2135 2140 2130 2115 2100 2070 2015
Clg SW2: Maximum Clg Airflow 22160 2165 2175 2170 2160 2150 2135 2120 2065 2020
Heating
(SW1)
High Heat Airflow 31570 1575 1595 1595 1600 1605 1600 1600 1590 1575
Low Heat Airflow 31365 1385 1395 1395 1395 1400 1400 1405 1395 1380
Unit Size Clg/CF Switch Settings External Static Pressure (ESP)
SWx-3 SWx-2 SWx-1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
120-22
Clg Default: OFF OFF OFF 1850 1855 1860 1855 1850 1830 1805 1775 1750 1730
CF Default: OFF OFF OFF 930 925 915 900 885 Seenote4
Cooling (SW2)
Cont Fan
(SW3)
OFF OFF ON 765 745 740 705 680 Seenote4
OFF ON OFF 930 925 915 900 885 Seenote4
OFF ON ON 1095 1100 1110 1105 1085 Seenote4
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
Clg SW2: Maximum Clg Airflow 22200 2200 2200 2190 2185 2170 2145 2085 1990 1890
Heating
(SW1)
High Heat Airflow 31815 1820 1825 1820 1815 1795 1775 1745 1720 1700
Low Heat Airflow 31640 1640 1645 1650 1645 1645 1630 1620 1600 1580
1. Nominal 350 CFM/ton cooling airflow is delivered with SW1-5 and SW4-3set 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).
The above adjustments in airflow are subject to motor horsepower range/capacity.
2. Maximum cooling airflow is achieved when switches SW2-1, SW2-2, SW2-3 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 ESP. Operation within the blank areas of the chart is not re-
commended because high-heat operation will be above 1.0 ESP.
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. Airflows over 1800 CFM require bottom return, two-side return, or bottom and side return; otherwise excessive watt draws may result. A
minimum filter size of 20" x 25" (508 x 635 mm) is required.
59TN6A

8
MAXIMUM EQUIVALENT VENT LENGTH -- FT. (M)
NOTE: Maximum Equivalent Vent Length (MEVL) includes standard and concentric vent termination and does NOT include elbows.
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
1-1/2 22-1/2 3 4
0 to 2000
(0 to 610)
40,000 350 (15.2) 210 (64.0) 250 (76.2) NA 2NA
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)
140,000 4NA NA 10 (3.0) 90 (27.4) 210 (64.0)
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)
140,000 4NA NA NA 80 (24.4) 185 (56.4)
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)
140,000 4NA NA NA 79 (24.1) 158 (48.2)
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)
140,000 4NA NA NA 69 (21.0) 146 (44.5)
NOTES: See notes at end of venting tables.
See Table 3 for altitudes over 4500 ft. (1370 M)
Long Medium Mitered
Concentric
Standard
ELBOW CONFIGURATIONS VENT TERMINAL CONFIGURATIONS
A11580
59TN6A

9
MAXIMUM EQUIVALENT VENT LENGTH -- FT. (M) (CONTINUED)
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) 8(2.4) 8(2.4)
Medium Radius 90º Elbow 5(1.5) 5(1.5) 5(1.5) 5(1.5) 5(1.5)
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) 4(1.2) 4(1.2)
Medium Radius 45º Elbow 2.5 (0.8) 2.5 (0.8) 2.5 (0.8) 2.5 (0.8) 2.5 (0.8)
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)
Concentric Vent Termination NA 0(0.0) NA 0(0.0) NA
Standard Vent Termination 0(0.0) 0(0.0) 0(0.0) 0(0.0) 0(0.0)
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.
See Vent Manufacturers’ data for equivalent lengths of flexible vent piping.
DO NOT ASSUME that one foot of flexible vent pipe is equivalent to one foot of standard PVC vent pipe.
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)
No deduction for Concentric Vent Kit 0 ft. =- 0 ft. (From Table 2)
Maximum Vent Length =115 ft. For EACH vent or inlet pipe
59TN6A

10
MAXIMUM EQUIVALENT VENT LENGTH -- FT. (M) (CONTINUED)
NOTE: Maximum Equivalent Vent Length (MEVL) includes standard and concentric vent termination and does NOT include elbows.
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) 5Unit Size
DIRECT VENT (2-PIPE) AND SINGLE-PIPE
Vent Pipe Diameter (in.) 1
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 2NA
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)
140,000 4NA NA NA 60 (18.3) 134 (40.8)
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)
140,000 4NA NA NA 50 (15.2) 109 (33.2)
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)
140,000 4NA NA NA 41 (12.5) 87 (26.5)
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)
140,000 4NA NA NA 32 (9.8) 63 (19.2)
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)
140,000 4NA NA NA 23 (7.0) 42 (12.8)
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)
140,000 4NA NA NA 16 (4.9) 20 (6.1)
NOTES:
1. Use only the vent pipe sizes shown for each furnace. It is NOT necessary to choose the smallest diameter pipe possible for venting.
2. NA --- Not allowed. Pressure switch will not close, or flame disturbance may result.
3. Total equivalent vent lengths under 10’ for 40,000 BTUH furnaces from 0 to 2000 ft. (0 to 610 M) above sea level require use of an outlet choke plate .
Failure to use an outlet choke when required may result in flame disturbance or flame sense lockout.
4. Not all furnace families include 140,000 BTUH input models.
5. Vent sizing for Canadian installations over 4500 ft (1370 M) above sea level are subject to acceptance by local authorities having jurisdiction.
6. Size both the combustion air and vent pipe independently, then use the larger size 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. Elbow 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) linear feet (meters) for all applications.
10. Use 3 ---in. (76 mm) diameter vent termination kit for installations requiring 4---in. (102 mm) diameter pipe.
59TN6A

11
MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH INSULATION TABLE -- FT. / M
Tw o S t ag e
Furnace High
Heat Input
Winter Design
Te m p ° F ( ° C )
Pipe
Length in
Ft. & M
No Insulation 3/8-in. (9.5 mm) 1/2-in. (12.7 mm)
Pipe Diameter-inches (mm) Pipe Diameter-inches (mm) Pipe Diameter-inches (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.
59TN6A

12
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
59TN6A

13
DOWNFLOW SUBBASE
LOCATING
TAB
LOCATING
TAB
1234
4321
B
D
C
A
1
1
/4-IN. TYP
PLENUM
OPENING
FACTORY-SUPPLIED
FIELD-INSTALLED
INSULATION
Assembled Disassembled
A97427 A88207
DIMENSIONS (IN. / MM)
FURNACE
CASING WIDTH
FURNACE IN DOWNFLOW
APPLICATION
PLENUM OPENING* FLOOR OPENING HOLE NO. FOR
WIDTH
ADJUSTMENT
A B C D
17---1/2 (444.5) Furnace with or without Cased Coil
Assembly or Coil Box
15---1/8
(384.2) 19 (482.6) 16--- 3/4 (425.5)
20---3/8
(517.5) 3
21 (533.4) Furnace with or without Cased Coil
Assembly or Coil Box
18---5/8
(396.4) 19 (482.6) 20--- 1/4 (514.4)
20---3/8
(517.5) 2
24---1/2 (622.3) Furnace with or without Cased Coil
Assembly or Coil Box
22---1/8
(562.0) 19 (482.6) 23--- 3/4 (603.3)
20---3/8
(517.5) 1
*The plenum should be constructed 1/4---in. (6 mm) smaller in width and depth than the plenum dimensions shown above.
Concentric Vent Kit
A93086
A concentric vent kit allows vent 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.
Downflow Subbase
A88202
One base fits all furnace sizes. The base is designed to be installed
between the furnace and a combustible floor when no coil box is
used or when a coil box other than a Carrier cased coil is used. It is
CSA design certified for use with Carrier branded furnaces when
installed in downflow applications.
59TN6A

14
MEDIA FILTER CABINET
Media Filter
Cabinet AB
16" (406mm)
20" (508mm)
24" (610mm)
17" (432mm)
Furnace Side
Centerline Screw Slots
23-3/4”
23-3/8”
23-5/8"
5
34
Duct Side
Opening
Opening with Flanges Bent
24-1/4”
25-5/8"
B Opening
A
"
(600mm)
(594mm)
(603mm)
(146mm)
(651mm)
(616mm)
23-1/8”
(588mm)
16" (406mm)
20" (508mm)
24" (610mm)
21" (533mm)
25" (635mm)
A11456
TYPICAL WIRING SCHEMATIC
115-VOLT FIELD-
SUPPLIED
FUSED
DISCONNECT
JUNCTION
BOX
24-VOLT
TERMINAL
BLOCK
THREE-WIRE
HEATING-
ONLY
FIVE
WIRE
NOTE 2
NOTE 1
1-STAGE
THERMOSTAT
TERMINALS
FIELD-SUPPLIED
FUSED DISCONNECT
CONDENSING
UNIT
FURNACE
COM
R
WCY RG
GND
GND
FIELD 24-VOLT WIRING
FIELD 115-, 208/230-, 460-VOLT WIRING
FACTORY 24-VOLT WIRING
FACTORY 115-VOLT WIRING
Connect Y/Y2-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.
208/230- OR
460-VOLT
THREE
PHASE
208/230-
VOLT
SINGLE
PHASE
WHT
BLK
WHT
BLK
W/W1
W2
Y/Y2
G
NOTES: 1.
2.
3.
BLOWER
DOOR
SWITCH
C
O
N
T
R
O
L
A11401
59TN6A

15
DIMENSIONAL DRAWING
A11589
59TN6A

16
GUIDE SPECIFICATIONS
General
System Description
Furnish a ______________________ 4--way multipoise
two--stage gas--fired condensing furnace for use with natural gas or
propane (factory-- authorized conversion kit required for propane);
furnish cold air return plenum; furnish external media cabinet for
use with accessory media filter or standard filter.
Quality Assurance
Unit will be designed, tested and constructed to the current ANSI Z
21.47/CSA 2.3 design standard for gas--fired central furnaces.
Unit will be third party certified by CSA to the current ANSI Z
21.47/CSA 2.3 design standard for gas--fired central furnaces. Unit
will carry the CSA Blue StarRand Blue FlameRlabels. Unit
efficiency testing will be performed per the current DOE test
procedure as listed in the Federal Register.
Unit will be certified for capacity and efficiency and listed in the
latest AHRI Consumer’s Directory of Certified Efficiency Ratings.
Unit will carry the current Federal Trade Commission Energy
Guide efficiency label.
Delivery, Storage, and Handling
Unit will be shipped as single package only and is stored and
handled per unit manufacturer’s recommendations.
Warranty (for inclusion by specifying engineer)
U.S. and Canada only. Warranty certificate available upon request.
Equipment
Blower Wheel and ECM Blower Motor
Galvanized blower wheel shall be centrifugal type, statically and
dynamically balanced. Blower motor of ECM type shall be
permanently lubricated with sealed ball bearings, of _______hp,
and have infinitely variable speed from 300--1300 RPM operating
only when motor inputs are provided. Blower motor shall be direct
drive and soft mounted to the blower scroll to reduce vibration
transmission.
Filters
Furnace shall have reusable--type filters. Filter shall be ______ in.
(mm) X ________ in. (mm). An accessory highly efficient Media
Filter is available as an option. _____________ Media Filter.
Casing
Casing shall be of .030 in. thickness minimum, pre--painted
galvanized steel.
Draft Inducer Motor
Draft Inducer motor shall be two--speed design.
Primary Heat Exchangers
Primary heat exchangers shall be 3--Pass corrosion--resistant
aluminized steel of fold--and--crimp sectional design and applied
operating under negative pressure.
Secondary Heat Exchangers
Secondary heat exchangers shall be of a stainless steel
flow--through of fin--and--tube design and applied operating under
negative pressure.
Controls
Controls shall include a micro--processor--based integrated
electronic control board with at least 16 service troubleshooting
codes displayed via diagnostic flashing LED light on the control, a
self--test feature that checks all major functions of the furnace, and
a replaceable automotive--type circuit protection fuse. Multiple
operational settings available, including separate blower speeds for
low heat, high heat, low cooling, high cooling and continuous fan.
Continuous fan speed may be adjusted from the thermostat.
Cooling airflow will be selectable between 325 and 400 CFM per
ton of air conditioning. Features will also include temporary
reduced airflow in the cooling mode for improved
dehumidification when an Infinity Control or TP--PRH edgeRis
selected as the thermostat.
Operating Characteristics
Heating capacity shall be _________________ Btuh input;
______________ Btuh output capacity.
Fuel Gas Efficiency shall be __________ AFUE.
Air delivery shall be ________________ cfm minimum at 0.50 in.
W.C. external static pressure.
Dimensions shall be: depth_________in. (mm); width
__________in. (mm); height___________in. (mm) (casing only).
Height shall be _________in. (mm) with A/C coil and
_________________in. (mm) overall with plenum.
Electrical Requirements
Electrical supply shall be 115 volts, 60 Hz, single--phase (nominal).
Minimum wire size shall be ________AWG; maximum fuse size
of HACR--type designated circuit breaker shall be _________
amps.
Special Features
Refer to section of the product data identifying accessories and
descriptions for specific features and available enhancements.
Copyright 2012 Carrier Corp. S7310 W. Morris St. SIndianapolis, IN 46231 Printed in U.S.A. Edition Date: 02/12
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No: 59TN6A---04PD
Replaces: 59TN6A--- 03PD
59TN6A