1
926TA
PREFERREDt TWO--STAGE
4--WAY MULTIPOISE, VARIABLE SPEED
CONDENSING GAS FURNACE, SERIES B, C
Product Data
A11264
The 926TA Multipoise Variable-- Speed Condensing Gas Furnace
features the two--stage Preferredt Series System. The Perfect
HeatR technology two--stage gas valve 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) up to 96.5%, the
Preferredt Series two-- stage gas furnace provides exceptional
savings as well when compared to standard gas furnaces. This
Preferredt Series Gas Furnace also features 4--way multipoise
installation flexibility, and is available in eight model sizes. The
926TA can be vented for direct vent/two--pipe, ventilated
combustion air , or single--pipe applications. All units meet
California Air Quality Management District emission requirements.
All sizes are design certified in Canada.
STANDARD FEATURES
S All sizes meet ENERGY STARR Version 4.0 criteria for gas
furnaces: 95+AFUE; AMACF electrical rating; 2% or less
cabinet airflow leakage.
S Quiet operation. Compare for yourself at HVACpartners.com.
S Series 3 or greater (sizes 60080, 60100, 66120) allow 15 Amp
breaker with accessory (order separately).
S Ideal height 35” (889 mm) cabinet: short enough for taller coils,
but still allows enough room for service.
S Silicon Nitride Perfect Light Hot Surface Igniter.
S Perfect HumidityR technology, including SmartEvapt
technology, when paired with appropriate thermostat.
S FanOn Plus technology allows control of continuous fan speed
from a compatible thermostat.
S 4 --way multipoise design for upflow, downflow or horizontal
installations, with unique vent elbow and optional through--
the--cabinet downflow venting capability .
S Full--featured variable--speed blower motor , two--speed inducer
motor, and two--stage gas valve.
S Self--diagnostics.
S Adjustable blower speed for cooling, continuous fan, and
dehumidification.
S Aluminized--steel primary heat exchanger.
S Stainless--steel condensing secondary heat exchanger.
S Propane convertible (See Accessory list).
S Factory-- configured ready for upflow applications.
S Fully--insulated casing including blower section.
S Convenient Air Purifier and Humidifier connections.
S Direct-- vent/sealed combustion, single--pipe venting or
ventilated combustion air.
S Installation flexibility: sidewall or vertical vent.
S Residential installations may be eligible for consumer financing
through the Retail Credit Program.
S Certified 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.
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)
AFUE
ENERGY
STARr
HEATING AIRFLOW
COOLING CFM
@0.5ESP
(in. W.C.)
MOTOR HP -
SPEED
(VARIABLE
SPEED)
H D W High Low
UPFLOW/
HORIZON-
TAL
DOWN-
FLOW
CFM‡ (High
Heating
CFM (Low
Heating)
High Heating
ESP
(in. W.C.)
926TA30040V14 35 29.5 14.2 39,000 25,000 96.5% 95.0% YES 815 660 0.10 905 1/2
926TA36040V17 35 29.5 17.5 39,000 25,000 96.0% 95.0% NO 860 660 0.10 1065 1/2
926TA36060V14 35 29.5 14.2 58,000 38,000 95.0% 95.0% YES 1120 910 0.12 1065 1/2
926TA42060V17 35 29.5 17.5 58,000 38,000 96.3% 95.0% YES 1135 860 0.12 1475 3/4
926TA48080V17 35 29.5 17.5 78,000 50,000 96.2% 95.0% YES 1505 1160 0.15 1610 3/4
926TA60080V21 35 29.5 21.0 78,000 51,000 96.5% 95.0% YES 1555 1200 0.15 2005 1
926TA60100V21 35 29.5 21.0 97,000 63,000 96.1% 95.0% YES 1865 1435 0.20 2005 1
926TA66120V24 35 29.5 24.0 117,000 76,000 96.5% 95.0% YES 2375 1675 0.20 2115 1
{Capacity in accordance with DOE test procedures. Ratings are position dependent. See rating plate.
‡Minimum heat CFM when low---heat rise adjustment switch (SW 1 ---3) and comfort/efficiency adjustment switch (SW1---4) on control center are OFF.
ESP --- External Static Pressure
FEATURES AND BENEFITS
Perfect HeatR Technology — This feature with Adaptive Control
is a proprietary function that promotes homeowner comfort
through two stages of heating. This Bryant 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.
SmartEvapt Technology — 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.
FanOnPlust Technology — Sometimes the constant fan setting
on a standard furnace system can actually reduce homeowner
comfort by providing too much or too little air! Fan On Plus
technology improves comfort all year long by allowing the
homeowner to select the continuous fan speed of their choice using
a compatible thermostat.
HYBRID HEAT R Dual 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, 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 Heatt Igniter — Bryant’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 Bryant’ s tradition of
technology leadership and innovation in providing a reliable and
durable product.
Full-Featured, V ariable Speed Motors — Our variable--speed
ECM (Electronically Commutated Motor) optimizes comfort levels
in the home year round; features such as passive/active
dehumidification, ramping profiles, and quiet operation. They can
provide cooling match enhancements to increase the effective
SEER of select Bryant air conditioner or heat pump system. This
motor does not report back RPM and static pressure to enable static
pressure reporting to the UI or zoning system, which is required for
zoning, active filter monitoring and system static pressure
reporting.
Reliable Heat Exchanger Design — The aluminized steel, clam
shell 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.
Optional Media Filter Cabinet — Enhanced indoor air quality in
the home is made easier with our media filter cabinet When
installed as a part of the system, this cabinet allows for easy and
convenient addition of a Bryant 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 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 Closur e — 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.
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 natu ral gas. A CSA listed gas
conversion kit is required to convert furnace for use with propane
gas. The efficiency is AHRI efficiency rating certified. This furnace
meets California Air Quality Management District emission
requirements.
926TA
3
MODEL NUMBER NOMENCLATURE
92
6
T
A
30
040
V
14
A
--
A
S - Single Stage
T - Two Stage
M - Modulating
S - Standard
E - Energy Efficient
V - Variable Speed
14 - 14.2”
17 - 17.5”
21 - 21.0”
24 - 24.5”
91 - Legacy
92 - Preferred
98 - Evolution
Voltage
L - Low NOx
1 - 2
Family/Tier
3
Base Eff.
Htg. Stages
4
5
Major Series
6 - 7
Clg. Cap.
Htg. Cap.
8 - 10
Motor
11
12 - 13
Width
14
Voltage
15
Features
Minor Series
16
Major Series
24 - 800 CFM
30 - 1000 CFM
36 - 1200 CFM
42 - 1400 CFM
48 - 1600 CFM
54 - 1800 CFM
60 - 2000 CFM
66 - 2200 CFM
(@ 0.5” ESP)
040= 40,000 BTU
060= 60,000 BTU
080= 80,000 BTU
100=100,000 BTU
120=120,000 BTU
140=140,000 BTU
Not all familes have these models.
0 - +90 AFUE
2 - +92 AFUE
3 - +93 AFUE
5 - +95 AFUE
6 - +96 AFUE
7 - +97 AFUE
Example of a Model Number
A14367
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
926TA
4
SPECIFICATIONS
The furnace should be sized to provide 100 percent of the design
heating load requirement plus any margin that occurs because of
furnace model size capacity increments. None of the furnace
model sizes can be used if the heating load is 20,000 BTU or
lower. Use Air Conditioning Contractors of America (Manual J
and S); American Society of Heating, Refrigerating, and
Air-Conditioning Engineers; or other approved engineering
method to calculate heating load estimates and select the furnace.
Excessive oversizing of the furnace may cause the furnace and/or
vent to fail prematurely , customer discomfort and/or vent freezing.
Failure to follow these guidelines is considered faulty installation
and/or misapplication of the furnace; and resulting failure, damage,
or repairs may impact warranty coverage.
Heating Capacity and Efficiency 30040 36040 36060 42060 48080 60080 60100 66120
Input
High Heat (BTUH) 40,000 40,000 60,000 60,000 80,000 80,000 100,000 120,000
Low Heat (BTUH) 26,000 26,000 39,000 39,000 52,000 52,000 65,000 78,000
Output
High Heat (BTUH) 39,000 39,000 58,000 58,000 78,000 78,000 97,000 117,000
Low Heat (BTUH) 25,000 25,000 38,000 38,000 50,000 51,000 63,000 76,000
Certified Temperature
Rise Range ºF (ºC)
High Heat
40 - 70
(22 - 39)
40 - 70
(22 - 39)
40 - 70
(22 - 39)
40 - 70
(22 - 39)
40 - 70
(22 - 39)
40 - 70
(22 - 39)
40 - 70
(22 - 39)
40 - 70
(22 - 39)
Low Heat
30 - 60
(17 - 33)
30 - 60
(17 - 33)
30 - 60
(17 - 33)
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 30040 36040 36060 42060 48080 60080 60100 66120
Rated External Static
Pressure (in. w.c.)
Heating 0.10 0.10 0.12 0.12 0.15 0.15 0.20 0.20
Cooling 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Airflow Delivery
@ Rated ESP (CFM)
High Heat 815 860 1120 1135 1505 1555 1865 2375
Low Heat 660 660 910 860 1160 1200 1435 1675
Cooling 905 1065 1065 1475 1610 2005 2005 2115
Cooling Capacity (tons)
@ 400, 350 CFM/ton
400 CFM/ton 2 2.5 2.5 3.5 4 5 5 5
350 CFM/ton 2.5 3 3 4 4.5 5.5 5.5 6
Direct-Drive Motor Ty pe Electronically Communicated Motor (ECM)
Direct-Drive Motor HP 1/2 1/2 1/2 3/4 3/4 1 1 1
Motor Full Load Amps—Default / Low Amp Kit{ 6.8 6.8 6.8 10.1 10.1 13.9/10.4 13.9/10.4 13.9/10.4
RPM Range 600 - 1200
Speed Selections Variable (PWM)
Blower Wheel Dia x Wi dth in. 11 x 7 11 x 8 11 x 7 11 x 8 11 x 8 11 x 10 11 x 10 11 x 11
Air Filtration System
Optional Media Cabinet
Field Supplied Filter
Filter Used for Certified Watt Data KGAWF1506UFR
Electrical Data 30040 36040 36060 42060 48080 60080{ 60100{ 66120{
Input Voltage Volts-Hertz-Phase 115-60-1
Operating Voltage Range Min-Max 104-127
Maximum Input Amps—Default / Low Amp Kit{ Amps 7.5 7.5 7.6 10.9 10.9 14.7/11.3 14.7/11.3 14.7/11.3
Unit Ampacity—Default / Low Amp Kit{ Amps 10.3 10.2 10.3 14.5 14.5 19.3/14.9 19.4/15.0 19.4/15.0
Minimum Wire Size—Default / Low Amp Kit{ AWG 14 14 14 14 14 12/14 12/14 12/14
Maximum Wire Length
@ Minimum Wire Size—Default / Low Amp Kit{
Feet 36 36 36 25 25 29/24 29/24 29/24
(M) (11.0) (11.0) (11.0) (7.6) (7.6) (8.8/7.3) (8.8/7.3) (8.8/7.3)
Maximum Fuse/Ckt Bkr
(Time-Delay Type Recommended)—Default /
Low Amp Kit{
Amps 15 15 15 15 15 20/15 20/15 20/15
Transformer Capacity (24vac output) VA
External Control Power
Available
Heating .3 VA
Cooling .6 VA
Controls 30040 36040 36060 42060 48080 60080 60100 66120
Gas Connection Size 1/2" - NPT
Burners (Monoport) 2 2 3 3 4 4 5 6
Gas Valve (Redundant) Manufacturer White Rodgers
Minimum Inlet Gas pressure (in. wc) 4.5
Maximum Inlet Gas pressure (in. wc) 13.6
Manufactured (Mobil e) Home Kit not approved for MH use
Ignition Device Silicon Nitride
Limit Control 165 180 165 180 170 200 180 160
Heating Blower Control (Heating Off-Delay) Adjustable: 90, 120, 150, 180 seconds
Cooling Blower Control (Time Delay Relay) 90 seconds
Communication System None
Thermostat Connections R, W/W1, W2 Y/Y2, Y1, G, Com 24V, DHUM
Accessory Connections E AC (115vac); HUM (24vac); 1-stg. AC (via Y/Y2)
* See Accessory List for part numbers available.
{ Low Amp Kit ( KGAPC0101ECM) all ows se l e c t furnaces to be installed with a 15 Amp Breaker and 14 A WG wire within the listed wire length.
926TA
5
ACCESSORIES
DESCRIPTION PAR T NUMBER 30040 36040 36060 42060 48080 60080 60100 66120
Venting Acce ssories
Vent Kit - Through the Cabinet KGADC0101BVC D D D D D D D D
Vent Terminal - Concentric - 2” (51 mm) KGAVT0701CVT
See Ventin g Tables
Vent Terminal - Concentric - 3” (76 mm) KGAVT0801CVT
Vent Terminal Bracket - 2” (51 mm) KGAVT0101BRA
Vent Terminal Bracket - 3” (76 mm) KGAVT0201BRA
Vent Kit --- Rubber Coupling KGAAC0101RVC See Ventin g Tables
Condensate Drainage Accessories
Freeze Protect Kit - Heat Tape KGAHT0101CFP D D D D D D D D
CPVC to PVC Drain Adapters - 1/2” CPVC to 3/4” PVC KGAAD0110PVC D D D D D D D D
Horizontal Trap Grommet - Direct Vent KGACK0101HCK All DV Horizontal
Condensate Neutralizer Kit P908---0001 D D D D D D D D
External Trap Kit KGAET0201ET K D D D D D D D D
Ductwork Adapter Accessorie s
Furnace Base Kit for Combustible Floors KGASB0201ALL D D D D D D D D
Coil Adapter Kits --- No Offset KGADA0101ALL D D D D D D D D
Coil Adapter Kits --- Single Offset KGADA0201ALL D D D D D D D D
Coil Adapter Kits --- Double Offset KGADA0301ALL D D D D D D D D
Return Air Base (Upflow Applications) 14.0 ---in. wide KGARP0301B14 D D
Return Air Base (Upflow Applications) 17.5 ---in. wide KGARP0301B17 D D D
Return Air Base (Upflow Applications) 21.0 ---in. wide KGARP0301B21 D D
Return Air Base (Upflow Applications) 24.5 ---in. wide KGARP0301B24 D
IAQ Device Duct Adapters 20.0 ---in. IAQ to 16 in. Side
Return
KGAAD0101MEC 20”x25” IAQ Devices
IAQ Device Duct Adapters 24.0 ---in. IAQ to 16 in. Side
Return
KGAAD0201MEC 24”x25” IAQ Devices
Gas Conversion Accessories
Gas Conversion Kit - Nat to LP; Var-speed Products KGCNP5201VSP D D D D D D D D
Gas Conversion Kit - LP to Nat; Var-speed Products KGCPN4401VSP D D D D D D D D
GasOrificeKit-#42(NatGas) LH32D B207 D D D D D D D D
GasOrificeKit-#43(NatGas) LH32D B202 D D D D D D D D
GasOrificeKit-#44(NatGas) LH32D B200 D D D D D D D D
GasOrificeKit-#45(NatGas) LH32D B205 D D D D D D D D
GasOrificeKit-#46(NatGas) LH32D B208 D D D D D D D D
GasOrificeKit-#47(NatGas) LH32D B078 D D D D D D D D
GasOrificeKit-#48(NatGas) LH32D B076 D D D D D D D D
Gas Orifice Kit - #54 (LP) LH32DB203 D D D D D D D D
Gas Orifice Kit - #55 (LP) LH32DB201 D D D D D D D D
Gas Orifice Kit - #56 (LP) LH32DB206 D D D D D D D D
Gas Orifice Kit - 1.25mm (LP) LH32DB209 D D D D D D D D
Gas Orifice Kit - 1.30mm (LP) LH32DB210 D D D D D D D D
Control Accessories
Advanced Product Monitor - APM KGASD0301APM D D D D D D D D
Preferred™ Ser ies T hermidistat T 6 --- P R H D D D D D D D D
Twinning Kit KGATW0801HSI D D D D
IAQ Accessories
Filter Pack (6 pack) --- Washable - 16x25x1
(406x635x25 mm)
KGAWF1306UFR D D D D D D D D
Filter Pack (6 pack) --- Washable - 24x25x1
(610x635x25 mm)
KGAWF1506UFR D D D D D D D D
EZ-Flex Filter - 16” (406 mm) EXPXX FIL0016 Use with EZXCAB---1016
EZ-Flex Filter - 20” (508 mm) EXPXX FIL0020 Use with EZXCAB---1020
EZ-Flex Filter - 24” (610 mm) EXPXX FIL0024 Use with EZXCAB---1024
EZ-Flex Filter with End Caps - 16” (406 mm) EXPXX UNV0016 Use with EZXCAB---1016
EZ-Flex Filter with End Caps - 20” (508 mm) EXPXX UNV0020 Use with EZXCAB---1020
EZ-Flex Filter with End Caps - 24” (610 mm) EXPXX UNV0024 Use with EZXCAB---1024
Cartridge Media Filter - 16” (406 mm) FILXXCAR0016 Use with FILCABXL---1016
Cartridge Media Filter - 20” (508 mm) FILXXCAR0020 Use with FILCABXL---1020
Cartridge Media Filter - 24” (610 mm) FILXXCAR0024 Use with FILCABXL---1024
Bryant Perfect Air Purifier - 16x25 (406x635 mm) GAPAAXBB1625-A08 Up to 1600 CFM
Bryant Perfect Air Purifier - 20x25 (508x635 mm) GAPAAXBB2025-A08 Up to 2000 CFM
Bryant Perfect Air Purifier Repl. Filter- 16x25
(406x635 mm)
GAPABBCAR1625-A05 Use with GAPAAXBB1625
Bryant Perfect Air Purifier Repl. Filter- 20x25
(508x635 mm)
GAPABBCAR2025-A05 Use with GAPAAXBB2025
Bryant Preferr ed Air Purifier - 16x25 (508x635 mm) PGAPXX1625 Up to 1600 CFM
Bryant Preferr ed Air Purifier - 20x25 (508x635 mm) PGAPXX2025 Up to 2000 CFM
Bryant Preferred Air Purifier Repl Filter - 16x25
(406x635 mm)
PGAPAXXCAR1625 Use with PGAPXX1625
Bryant Preferred Air Purifier Repl. Filter - 20x25
(508x635 mm)
PGAPAXXCAR2025 Use with PGAPXX2025
Other
Lower Amp Kit KGAPC0101ECM D D D
D = Used with the model furnace
926TA
6
AIR DELIVERY -- CFM
(SW1-5 and SW2---2 set to OFF, except as indicated. See notes 1 and 2)
Unit Size
Cooling Switch Settings External Static Pressure (ESP)
SW2-8 SW2-7 SW2-6 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.030
30040
Clg Default: OFF OFF OFF 1125 1080 1020 970 905 855 805 755 700 635
Cooling (SW2)
OFF OFF ON 615 555 510 475 440 395 355 270 230 note 8
OFF ON OFF 785 740 695 665 630 590 565 520 485 450
OFF ON ON 990 950 910 875 850 815 770 720 670 615
ON OFF OFF 1125 1080 1020 970 905 855 805 755 700 635
ON OFF ON 1125 1080 1020 970 905 855 805 755 700 635
ON ON OFF 1125 1080 1020 970 905 855 805 755 700 635
ON ON ON 1125 1080 1020 970 905 855 805 755 700 635
Clg SW2: Maximum Clg Airflow
2
1125 1080 1020 970 905 855 805 755 700 635
Heating
(SW1)
High Heat Airflow
3
815 770 725 695 660 625 595 550 510 475
Low Heat Airflow
3
660 605 560 530 495 450 415 340 300 Note 7
36040
Clg Default: OFF OFF OFF 1250 1210 1165 1115 1065 1015 965 915 860 810
Cooling (SW2)
OFF OFF ON 575 540 490 435 385 Seenote4
OFF ON OFF 770 725 685 640 600 560 515 480 Seenote4
OFF ON ON 945 910 875 835 800 770 735 695 665 635
ON OFF OFF 1140 1105 1075 1040 1005 970 930 885 835 790
ON OFF ON 1250 1210 1165 1115 1065 1015 965 915 860 810
ON ON OFF 1250 1210 1165 1115 1065 1015 965 915 860 810
ON ON ON 1250 1210 1165 1115 1065 1015 965 915 860 810
Clg SW2: Maximum Clg Airflow
2
1250 1210 1165 1115 1065 1015 965 915 860 810
Heating
(SW1)
High Heat Airflow
3
860 825 785 745 705 670 630 595 565 525
Low Heat Airflow
3
650 595 545 500 460 415 365 320 275 note 7
36060
Clg Default: OFF OFF OFF 1250 1210 1165 1115 1065 1015 955 895 815 745
Cooling (SW2)
OFF OFF ON 605 565 510 455 420 Seenote4
OFF ON OFF 785 750 705 675 630 585 Seenote4
OFF ON ON 955 920 895 860 825 785 755 720 685 650
ON OFF OFF 1135 1110 1080 1055 1020 990 935 880 825 745
ON OFF ON 1250 1210 1165 1115 1065 1015 955 895 815 745
ON ON OFF 1250 1210 1165 1115 1065 1015 955 895 815 745
ON ON ON 1250 1210 1165 1115 1065 1015 955 895 815 745
Clg SW2: Maximum Clg Airflow
2
1250 1210 1165 1115 1065 1015 955 895 815 745
Heating
(SW1)
High Heat Airflow
3
1125 1100 1070 1045 1010 980 925 875 820 740
Low Heat Airflow
3
900 865 835 800 760 720 690 650 610 580
926TA
7
AIR DELIVERY -- CFM (CONTINUED)
Unit Size
Cooling Switch Settings External Static Pressure (ESP)
SW2-8 SW2-7 SW2-6 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
42060
Clg Default: OFF OFF OFF 1330 1295 1260 1220 1190 1150 1110 1075 1045 1005
Cooling (SW2)
OFF OFF ON 725 600 435 280 210 Seenote4
OFF ON OFF 780 725 660 615 540 Seenote4
OFF ON ON 975 925 875 835 785 750 690 655 610 570
ON OFF OFF 1160 1120 1090 1045 1010 970 920 885 840 800
ON OFF ON 1330 1295 1260 1220 1190 1150 1110 1075 1045 1005
ON ON OFF 1705 1650 1595 1545 1475 1415 1340 1275 1200 1105
ON ON ON 1705 1650 1595 1545 1475 1415 1340 1275 1200 1105
Clg SW2: Maximum Clg Airflow
2
1705 1650 1595 1545 1475 1415 1340 1275 1200 1105
Heating
(SW1)
High Heat Airflow
3
1145 1105 1075 1030 995 955 905 870 825 785
Low Heat Airflow
3
870 820 760 720 655 620 560 525 470 435
48080
Clg Default: OFF OFF OFF 1805 1765 1720 1665 1610 1540 1475 1400 1315 1235
Cooling (SW2)
OFF OFF ON 775 635 455 230 Seenote8
OFF ON OFF 840 740 675 625 555 Seenote4
OFF ON ON 995 955 910 860 815 770 720 660 620 585
ON OFF OFF 1175 1140 1090 1060 1025 980 940 905 855 815
ON OFF ON 1325 1280 1245 1210 1180 1140 1105 1070 1025 990
ON ON OFF 1545 1515 1480 1445 1410 1380 1350 1315 1245 1175
ON ON ON 1805 1765 1720 1665 1610 1540 1475 1400 1315 1235
Clg SW2: Maximum Clg Airflow
2
1805 1765 1720 1665 1610 1540 1475 1400 1315 1235
Heating
(SW1)
High Heat Airflow
3
1520 1490 1455 1420 1385 1355 1320 1285 1220 1155
Low Heat Airflow
3
1180 1145 1095 1065 1030 985 945 910 860 820
60080
Clg Default: OFF OFF OFF 1905 1870 1825 1785 1750 1700 1665 1625 1560 1460
Cooling (SW2)
OFF OFF ON 950 770 620 515 440 365 See note 4
OFF ON OFF 1015 935 880 825 765 690 625 580 See note 4
OFF ON ON 1155 1105 1040 990 920 875 815 755 710 645
ON OFF OFF 1335 1290 1245 1190 1145 1085 1040 990 930 890
ON OFF ON 1520 1485 1435 1390 1340 1300 1255 1200 1160 1115
ON ON OFF 1905 1870 1825 1785 1750 1700 1665 1625 1560 1460
ON ON ON 2290 2230 2160 2085 2005 1915 1820 1730 1640 1525
Clg SW2: Maximum Clg Airflow
2
2290 2230 2160 2085 2005 1915 1820 1730 1640 1525
Heating
(SW1)
High Heat Airflow
3
1575 1535 1485 1445 1400 1350 1310 1260 1215 1170
Low Heat Airflow
3
1230 1170 1125 1065 1015 955 900 855 795 755
NOTE: See notes at end of table.
926TA
8
AIR DELIVERY -- CFM (CONTINUED)
Unit Size
Cooling Switch Settings External Static Pressure (ESP)
SW2-8 SW2-7 SW2-6 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
60100
Clg Default: OFF OFF OFF 1890 1845 1800 1755 1700 1655 1610 1560 1510 1460
Cooling (SW2)
OFF OFF ON 1015 825 630 485 405 325 See note 4
OFF ON OFF 1080 895 815 740 690 615 555 475 See note 4
OFF ON ON 1155 1080 1020 940 890 825 785 710 660 590
ON OFF OFF 1310 1260 1195 1140 1075 1025 970 925 875 810
ON OFF ON 1520 1475 1425 1365 1315 1255 1210 1155 1110 1055
ON ON OFF 1890 1845 1800 1755 1700 1655 1610 1560 1510 1460
ON ON ON 2290 2230 2160 2085 2005 1915 1820 1730 1640 1525
Clg SW2: Maximum Clg Airflow
2
2290 2230 2160 2085 2005 1915 1820 1730 1640 1525
Heating
(SW1)
High Heat Airflow
3
1905 1865 1825 1775 1730 1685 1640 1590 1545 1490
Low Heat Airflow
3
1480 1435 1375 1330 1265 1215 1160 1115 1060 1005
66120
Clg Default: OFF OFF OFF 2010 1960 1910 1850 1800 1750 1690 1645 1565 1480
Cooling (SW2)
OFF OFF ON 1015 805 645 550 480 See note 4
OFF ON OFF 1075 975 915 835 765 See note 4
OFF ON ON 1205 1135 1055 1000 935 See note 4
ON OFF OFF 1400 1330 1260 1190 1145 1080 1035 970 905 845
ON OFF ON 1615 1550 1500 1435 1370 1325 1265 1215 1160 1110
ON ON OFF 2010 1960 1910 1850 1800 1750 1690 1645 1565 1480
ON ON ON note 8 2375 2300 2205 2115 2010 1890 1750 1645 1550
Clg SW2: Maximum Clg Airflow
2
note 8 2375 2300 2205 2115 2010 1890 1750 1645 1550
Heating
(SW1)
High Heat Airflow
3
note 8 2375 2300 2205 2115 2010 1890 1750 1645 1550
Low Heat Airflow
3
1735 1675 1625 1560 1500 1455 1395 1345 1285 1225
1. Nominal 350 CFM/ton cooling airflow is delivered with SW1---5 and SW2 ---2 set to OFF.
S e t b o t h S W 1 --- 5 a n d S W 2 --- 2 t o O N f o r + 7 % a i r f l o w ( n o m i n a l 3 7 0 C F M / t o n ) .
Set SW1---5 to ON and SW2---2 to OFF for +15% airflow (nominal 400 CFM/ton).
S e t S W 2 --- 2 t o O N a n d S W 1 --- 5 t o O F F f o r --- 7 % a i r f l o w ( n o m i n a l 3 2 5 C F M / t o n ) .
The above adjustments in airflow are subject to motor horsepower range/capacity.
2 . M a x i m u m c o o l i n g a i r f l o w i s a c h i e v e d w h e n s w i t c h e s S W 2 --- 6 , S W 2 --- 7 , S W 2 --- 8 a n d S W 1 --- 5 a r e s e t t o O N , a n d S W 2 --- 2 i s s e t t o O F F.
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 recommended
because high ---heat operation will be above 1.0 ESP.
5. All airflows of 1880 CFM or less on 21” a nd 24.5” casing size fur naces are 5% less on side return onl y installations.
6. Return air a bove 1800 CFM on 24.5” casing requires two sides, one side a nd bottom, or bottom onl y to allow sufficient airflow to the fur nace.
7. For upflow applications, air entering from one side into both the side of the furnace and a return air base counts as a side and bottom return.
8. Airflow not stable at this ESP.
926TA
9
MAXIMUM ALLOWABLE EXPOSED VENT LENGTH
Table 1 – Maximum Allowable Exposed Vent Lengths in Unconditioned Space Insulation Table -- Ft.
Winter
Design
Temp
°F
Unit Size
40,000* BTUH 60,000 BTUH
Uninsulated
3/8-in. Insulation 1/2-in. Insulation
Uninsulated 3/8-in. Insulation 1/2-in. Insulation
Pipe Dia.
in.
1½ 2 2½ 1½ 2 2½ 1½ 2 2½ 1½ 2 2½ 3 1½ 2 2½ 3 1½ 2 2½ 3
20 20 20 20 20 50 45 20 60 50 20 30 30 25 20 75 65 60 20 85 75 65
0 10 5 5 20 25 20 20 30 25 15 15 10 10 20 40 30 25 20 45 40 30
-20 5 20 15 10 20 20 15 10 5 20 25 20 15 20 30 25 20
-40 15 10 5 15 15 10 5 20 15 15 10 20 20 15 10
Winter
Design
Temp
°F
Unit Size
80,000 BTUH
Uninsulated 3/8-in. Insulation 1/2-in. Insulation
Pipe Dia.
in.
1½ 2 2½ 3 4 1½ 2 2½ 3 4 1½ 2 2½ 3 4
20 15 40 40 35 30 15 50 90 75 65 15 50 70 70 70
0 15 20 15 10 5 15 50 45 35 30 15 50 50 40 35
-20 15 10 5 15 35 30 20 15 15 40 30 25 15
-40 10 5 15 25 20 15 5 15 30 25 20 10
Winter
Design
Temp
°F
Unit Size
100,000 BTUH
Uninsulated 3/8-in. Insulation 1/2-in. Insulation
Pipe Dia.
in.
2 2½ 3 4 2 2½ 3 4 2 2½ 3 4
20 20 50 40 35 20 80 95 80 20 80 105 90
0 20 20 15 10 20 55 45 35 20 65 55 45
-20 15 10 5 20 35 30 20 20 45 35 25
-40 10 5 20 25 20 10 20 30 25 15
Winter
Design
Temp
°F
Unit Size
120,000 BTUH 140,000 BTUH
Uninsulated
3/8-in. Insulation 1/2-in. Insulation
Uninsulated 3/8-in. Insulation 1/2-in. Insulation
Pipe Dia.
in.
2½ 3 4 2½ 3 4 2½ 3 4 2½ 3 4 2½ 3 4 2½ 3 4
20 10 50 40 10 75 95 10 75 105 5 55 50 5 65 105 5 65 125
0 10 20 15 10 55 45 10 65 50 5 25 15 5 65 50 5 65 60
-20 10 10 10 35 25 10 45 30 5 10 5 5 45 30 5 50 40
-40 10 5 10 25 15 10 30 20 5 5 5 30 20 5 35 25
Maximum Allowable Exposed Vent Length in Unconditioned Space -- Meters
Winter
Design
Temp
°C
Unit Size
40,000* BTUH 60,000 BTUH
Uninsulated
3/8-in. Insulation 1/2-in. Insulation
Uninsulated 3/8-in. Insulation 1/2-in. Insulation
Pipe Dia.
mm
38 51 64 38 51 64 38 51 64 38 51 64 76 38 51 64 76 38 51 64 76
-7 6.1 6.1 6.1 6.1 15.2 13.7 6.1 18.3 15.2 6.1 9.1 9.1 7.6 6.1 22.9 19.8 18.3 6.1 25.9 22.9 19.8
-18 3.0 1.5 1.5 6.1 7.6 6.1 6.1 9.1 7.6 4.6 4.6 3.0 3.0 6.1 12.2 9.1 7.6 6.1 13.7 12.2 9.1
-29 1.5 6.1 4.6 3.0 6.1 6.1 4.6 3.0 1.5 6.1 7.6 6.1 4.6 6.1 9.1 7.6 6.1
-40 4.6 3.0 1.5 4.6 4.6 3.0 1.5 6.1 4.6 4.6 3.0 6.1 6.1 4.6 3.0
Winter
Design
Temp
°C
Unit Size
80,000 BTUH
Uninsulated 3/8-in. Insulation 1/2-in. Insulation
Pipe Dia.
mm
38 51 64 76 102 38 51 64 76 102 38 51 64 76 102
-7 4.6 12.2 12.2 10.7 9.1 4.6 15.2 27.4 22.9 19.8 4.6 15.2 21.3 21.3 21.3
-18 4.6 6.1 4.6 3.0 1.5 4.6 15.2 13.7 10.7 9.1 4.6 15.2 15.2 12.2 10.7
-29 4.6 3.0 1.5 4.6 10.7 9.1 6.1 4.6 4.6 12.2 9.1 7.6 4.6
-40 3.0 1.5 4.6 7.6 6.1 4.6 1.5 4.6 9.1 7.6 6.1 3.0
Winter
Design
Temp
°C
Unit Size
100,000 BTUH
Uninsulated 3/8-in. Insulation 1/2-in. Insulation
Pipe Dia.
mm
51 64 76 102 51 64 76 102 51 64 76 102
-7 6.1 15.2 12.2 10.7 6.1 24.4 28.9 24.4 6.1 24.4 32.0 27.4
-18 6.1 6.1 4.6 3.0 6.1 16.8 13.7 10.7 6.1 19.8 16.7 13.7
-29 4.6 3.0 1.5 6.1 10.7 9.1 6.1 6.1 13.7 10.7 7.6
-40 3.0 1.5 6.1 7.6 6.1 3.0 6.1 9.1 7.6 4.6
Winter
Design
Temp
°C
Unit Size
120,000 BTUH 140,000 BTUH
Uninsulated
3/8-in. Insulation 1/2-in. Insulation
Uninsulated 3/8-in. Insulation 1/2-in. Insulation
Pipe Dia.
mm
64 76 102 64 76 102 64 76 102 64 76 102 64 76 102 64 76 102
-7 3.0 15.2 12.2 3.0 22.9 28.9 3.0 22.9 32.0 1.5 16.7 15.2 1.5 19.8 32.0 1.5 19.8 38.1
-18 3.0 6.1 4.6 3.0 16.8 13.7 3.0 19.8 15.2 1.5 7.6 4.6 1.5 19.8 15.2 1.5 19.8 18.3
-29 3.0 3.0 3.0 10.7 7.6 3.0 13.7 9.1 1.5 3.0 1.5 1.5 13.7 9.1 1.5 15.2 12.2
-40 3.0 1.5 3.0 7.6 4.6 3.0 9.1 6.1 1.5 1.5 1.5 9.1 6.1 1.5 35 7.6
* Pipe length (ft) specified for maximum pipe lengths located in unconditioned spaces. Pipes l ocated in u n conditioned space cannot exceed total allowable pipe
length calculated from Table 2.
† Insulation thickness based on R value of 3.5 per in.
926TA
10
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 3 - Deductions from Maximum Equivalent Vent Length to determine allowable vent length for each application.
Table 2 – Maximum Equivalent Vent Length -- Ft.
Unit Size 40,000
1
60,000
2
80,000 100,000
3
120,000
Altitude
(feet)
Pipe Dia. (in) 1½ 2 2½ 1½ 2 2½ 3 1½ 2 2½ 3 4 2 2½ 3 4 2½ 3 4
0--- 2000 40 155 185
20
100 175 200 15 55 130 175 200 20 80 175 200
10
75 185
2001--- 3000 35 150 175 95 165 185
10
49
125 165 185
15 75
165 185 70 175
3001--- 4000 30 135 160 16 90 155 175 115 155 175
155
175 5 65 165
4001--- 4500
25
130 155
15
85 150 170
44 110
150 165
10
70 170
N/A
60
160
4501--- 5000 125 145 80 145 165 145 160
65
150 165
5001--- 6000 20 120 130 75 140 155 41 100 135 150 140 155 155
6001--- 7000 15 110 120 13 70 130 145
N/A
38
90
125 140 60 135 145 50 140
7001--- 8000
10
100 110 10 65 120 135 36 120 125
N/A
55 125 135 46 130
8001--- 9000 90 95 5 60 115 125 33 80 110 115 50 115 125 43 120
9001--- 10000 5 80 85 N/A 55 105 115 30 75 100 105 45 100 115 39 115
Maximum Equivalent Vent Length --- Meters
Unit Size 40,000
1
60,000
2
80,000 100,000
3
120,000
Altitude
(meters)
Pipe Dia.
(mm)
38 51 64 38 51 64 76 38 51 64 76 102 51 64 76 102 64 76 102
0 --- 6 1 0 12.1 47.2 56.3
6.0
30.4 53.3 60.9 4.5 16.7 39.6 53.3 60.9 6.0 24.3 53.3 60.9
3.0
22.8 56.3
611--- 914 10.6 45.7 53.3 28.9 50.2 56.3
3.0
14.9
38.1 50.2 56.3
4.5 22.8
50.2 56.3 21.3 53.3
915--- 1219 9.1 41.1 48.7 4.8 27.4 47.2 53.3 35.0 47.2 53.3
47.2
53.3 1.5 19.8 50.2
1220--- 1370
7.6
39.6 47.2
4.5
25.9 45.7 51.8
13.4 33.5
45.7 50.2
3.0
21.3 51.8
NA
18.2
48.7
1371--- 1524 38.1 44.1 24.3 44.1 50.2 44.1 48.7
19.8
45.7 50.2
1525--- 1829 6.0 36.5 39.6 22.8 42.6 47.2 12.4 30.4 41.1 45.7 42.6 47.2 47.2
1830--- 2134 4.5 33.5 36.5 3.9 21.3 39.6 44.1
NA
11.5
27.4
38.1 42.6 18.2 41.1 44.1 15.2 42.6
2135--- 2438
3.0
30.4 33.5 3.0 19.8 36.5 41.1 10.9 36.5 38.1
NA
16.7 38.1 41.1 14.0 39.6
2439--- 2743 27.4 28.9 1.5 18.2 35.0 38.1 10.0 24.3 33.5 35.0 15.2 35.0 38.1 13.1 36.5
2744--- 3048 1.5 24.3 25.9 NA 16.7 32.0 35.0 9.1 22.8 30.4 32.0 13.7 30.4 35.0 11.8 35.0
1. Inducer Outlet Restrictor disk (P/N 337683---401; 1.25---in. (32 mm) Dia.) shipped in the loose parts bag or available through Replacement Components
required under 10 ---f t. (3 M) TE V L in all orientations. Required for installations from 0 --- 2000 (0 to 610 M) above sea level. Failure to use an outlet restric-
tor may result in fl ame disturbances or flame sense lock---out.
2. Inducer Outlet Restrictor disk (P/N 337683---401; 1.25---in. (32 mm) Dia.) available through Replacement Components required for no greater than 5 --- f t . ( 1 . 5
M) TEVL in downflow and horizontal orientations only. Required f or installations from 0 --- 2000 (0 to 610 M) above sea level.
3. Inducer Outlet Restrictor disk (P/N 337683---402; 1.50---in. (38 mm) Dia.) available through Replacement Components required for no greater than 5 --- f t . ( 1 . 5
M) TEVL in downflow and horizontal orientations only. Required f or installations from 0 --- 2000 (0 to 610 M) above sea level.
Long
Medium
Mitered
Concentric
Standard 2-in., 3-in., or
optional 4-in. termination.
ELBOW CONFIGURATIONS
VENT TERMINAL CONFIGURATIONS
A13110
Table 3 – Deductions from Maximum Equivalent Vent Length -- Ft. (M)
Pipe Diameter (in): 1-1/2 2 2-1/2 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 Te rmination 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)
NOTES:
1. Use only the smallest diameter pipe possible for venting. Over ---sizing may cause flame disturbance or excessive vent terminal icing or freeze ---up.
2. NA --- Not allowed. Pressure switch will not close, or flame disturbance may result.
3. Not all furna ce families include 140,000 BTUH input models.
4. Vent sizing for Canadian installations over 4500 f t (1370 M) above sea level are subject to acceptance by local author ities having jurisdiction.
5. Size both the combustion air and vent pipe independently, then use the larger size for both pipes.
6. Assume the two 45_ elbows equal one 90_ elbow . Wide radius elbows are desirable and may be required in some cases.
7. Elbow and pipe sections with in the furnace casing and at the vent termination should not be included in vent length or elbow count.
8. The minimum pipe length is 5 ft. (2 M) linear feet (meters) for all applications.
9. Use 3 ---in. (76 mm) diameter vent termination kit for installations requiring 4 ---in. (102 mm) diameter pipe.
926TA
11
Venting S ystem L ength Calculations
The Total Equivalent Vent Length (TEVL) for EACH combustion air or vent pipe equals the length of the venting system, plus the equivalent
length of elbows used in the venting system from Table 3.
Standard vent terminations or factory accessory concentric vent terminations count for zero deduction.
See vent system manufacturer’s data for equivalent lengths of flexible vent pipe or other termination systems. DO NOT ASSUME that one
foot of flexible vent pipe equals one foot of straight PVC/ABS DWV vent pipe.
Compare the Total Equivalent Vent Length to the Maximum Equivalent Vent Lengths in Table 2.
Example 1
A direct-vent 60,000 BTUH furnace installed at 2100 ft. (640M). Venting system includes FOR EACH PIPE:
70 feet (22 M) of vent pipe, 65 feet (20 M) of combustion air inlet pipe, (3) 90º long-radius elbows, (2) 45º long-radius elbows, and a factory
accessory concentric vent kit.
Can this application use 2” (50 mm ND) PVC/ABS DWV vent piping?
Measure the required linear length of air inlet and
vent pipe; insert the longest of the two here
70 ft.
(22 M)
Use length of the longer of the vent
or air inlet piping system
Add equiv length of (3) 90º long-radius elbows
(use the highest number of elbows for either the
vent or inlet pipe)
3 x
3ft.
(0.9 M)
=
9ft.
(2.7 M)
From T able 3.
Add equiv length of (2) 45º long-radius elbows
(use the highest number of elbows for either the
vent or inlet pipe)
2 x
1.5 ft.
(0.5 M)
=
3ft.
(0.9 M)
From T able 3.
Add equiv length of factory concentric vent term 0ft. From T able 3.
Add correction for flexible vent pipe, if any 0ft.
From Vent Manufacturer’s
instructions; zero for PVC/ABS DWV
Total Equivalent Vent Length (TEVL)
82 ft.
(25 M)
Add all of the above lines
Maximum Equivalent Vent Length (MEVL)
95 ft.
(29 M)
For 2” pipe from Table 2
Is TEVL less than MEVL? YES Therefore, 2” pipe MAY be used
Example 2
A direct-vent 60,000 BTUH furnace installed at 2100 ft. (640M). Venting system includes FOR EACH PIPE:
100 feet (30 M) of vent pipe, 95 feet (29 M) of combustion air inlet pipe, (3) 90º long-radius elbows, and a polypropylene concentric vent kit.
Also includes 20 feet (6.1 M) of flexible polypropylene vent pipe, included within the 100 feet (30 M) of vent pipe.
VERIFY FROM POLYPROPYLENE VENT MANUFACTURER’S INSTRUCTIONS for the multiplier correction for flexible vent pipe.
Can this application use 60mm o.d. (2”) polypropylene vent piping? If not, what size piping can be used?
Measure the required linear length of RIGID air inlet and vent pipe; insert
the longest of the two here: 100 ft. Of rigid pipe --- 20 ft. Of flexible pipe
= 80 ft.
(24 M)
Use length of the longer of the vent
or air inlet piping system
Add equiv length of (3) 90º long-radius elbows
(use the highest number of elbows for either the
vent or inlet pipe)
3 x
5ft.
(1.5 M)
=
15 ft.
(4.6 M)
Example from polypropy lene vent
manufacturer’s instructions, Verify from vent
manufacturer’s instructions.
Add equiv length of 45º long-radius elbows
(use the highest number of elbows for either the
vent or inlet pipe)
0 x =
0ft.
(0 M)
Add equiv length of factory concentric vent term 9 x
3.3 ft
(0.9 M)
=
30 ft.
(9 M)
Add correction for flexible vent pipe, if any 2* x
20 ft.
(6.1 M)
=
36 ft.
(11 M)
* VERIFY FROM VENT MANUFACTURER’S INSTRUCTIONS; For example only, assume 1 meter of flexible 60mm (2”) or 80mm (3”)
polypropylene pipe equals 2.0 meters (6.5 ft.) of PVC/ABS pipe.
Total Equivalent Vent Length (TEVL)
165 ft.
(50 M)
Add all of the above lines
Maximum Equivalent Vent Length (MEVL)
95 ft.
(29 M)
For 2” pipe from Table 2
Is TEVL less than MEVL? NO
Therefore, 60mm (2”) pipe may NOT be
used; try 80mm (3”)
Maximum Equivalent Vent Length (MEVL)
185 ft.
(57 M)
For 3” pipe from Table 2
Is TEVL less than MEVL? YES Therefore, 80mm (3”) pipe MAY be used
926TA
12
RETURN AIR TEMPERATURE
This furnace is designed for continuous return-- air min imum 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)
Ve n t 0(0mm)
Top of Furnace 1in. (25mm)
* Recommended
**Consult your local building codes
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.
MITERED RADIUS
PVC 90° ELBOW
12” (300 mm) MINIMUM
A12376
NOTE: See Installation Instructions for specific venting configurations.
926TA
13
DOWNFLOW SUBBASE
LOCATING
TAB
LOCATING
TAB
1
2
3
4
4
3
2
1
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
14--- 3/16 (360)
Furnace with or without Cased Coil
Assembly or Coil Box
11--- 3/16
(322)
19 (483)
13--- 7/16
(341)
20--- 5/8
(600)
4
17--- 1/2 (445)
Furnace with or without Cased Coil
Assembly or Coil Box
15--- 1/8
(384)
19 (483)
16--- 3/4
(426)
20--- 5/8
(600)
3
21 (533)
Furnace with or without Cased Coil
Assembly or Coil Box
18--- 5/8
(396)
19 (483)
20--- 1/4
(514)
20--- 5/8
(600)
2
24--- 1/2 (622)
Furnace with or without Cased Coil
Assembly or Coil Box
22--- 1/8
(562)
19 (483)
23--- 3/4
(603)
20--- 5/8
(600)
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 Bryant cased coil is used. It is
CSA design certified for use with Bryant branded furnaces when
installed in downflow applications.
926TA
14
OPTIONAL MEDIA FILTER CABINET
Media Filter
Cabinet
A
B
16" (406mm)
20" (508mm)
24" (610mm)
17" (432mm)
Furnace Side
Centerline Screw Slots
23-3/4”
23-3/8”
23-5/8"
5
3
4
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)
NOTE: Media cabinet is matched to the bottom opening on furnace. May also be used for side return.
A12428
TYPICAL WIRING SCHEMATIC
115-V FIELD-
SUPPLIED
DISCONNECT
AUXILIARY
J-BOX
24-V
TERMINAL
BLOCK
THREE-WIRE
HEATING-ONLY
FIVE WIRE
NOTE 1
NOTE 2
FIELD-SUPPLIED
DISCONNECT
CONDENSING
UNIT
TWO
WIRE
FURNACE
C
O
N
T
R
O
L
R
G
COM
WCR GY
GND
GND
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
BLOWER DOOR SWITCH
WHT
BLK
WHT
BLK
NOTES: Connect Y-terminal in furnace as shown for proper blower 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.
A11387
926TA
15
DIMENSIONAL DRAWING
6 15/16
[176.1]
3
[76.2]
3
[76.2]
6 11/16
[170.1]
23 5/16
[592.9]
25 1/8
[638.7]
26 3/8
[670.0]
26 11/16
[678.1]
21
[534.0]
26 5/16
[668.8]
17 5/16
[439.2]
16 9/16
[420.9]
20 1/4
[513.9]
25 3/16
[639.1]
28 3/16
[715.9]
28 5/8
[726.4]
32 5/8
[829.5]
28 3/4
[730.5]
26 3/8
[669.9]
26 11/16
[678.1]
21 15/16
[557.4]
21 1/16
[535.8]
26 5/16
[668.8]
3
[76.2]
AIR INTAKE
1 3/4
[44.5]
GAS CONN
7/8
[22.2]
7/8
[22.2] POWER CONN
7/8
[22.2]
THERMOSTAT ENTRY
7/8
[22.2]
3
[76.2]
AIR INTAKE
1 3/4
[44.5]
GAS CONN
7/8
[22.2]
7/8
[22.2]
3
[76.2 ]
7/8
[22.2]
7/8
[22.2]
THERMOSTAT ENTRY
22 15/16
[581.9]
16 9/16
[420.9]
17 7/16
[442.3]
20 1/4
[513.9]
24
[609.7]
28 3/8
[720.4]
28 5/8
[726.9]
29 13/16
[757]
23 3/8
[592.0]
3
[76.2]
VENT
1 (BOTH SIDES)
[25.4]
D
2 3/10
[58.4]
C
BOTTOM RETURN
WIDTH
11/16
[17.5]
11/16
[17.5]
B
OUTLET WIDTH
A
22
[558.3] (BOTH SIDES)
14 13/16
[376.3]
35
[889.0]
5/8
[15.8]
1 5/16
[33.3]
29 1/2
[749.3]
19 1/8
[485.8]
20 5/8
[522.7]
23 7/16
[595.6]
[101.6]
4
[63.5]
2 1/2
18 1/16
[458.6]
2 1/2
[63.5]
4
[101.6]
20 5/8
[522.7]
BOTTOM INLET
21 5/8
[549.5]
6 1/16
[154.0]
PART NUMBER
SD5024-4
SHT
1
REV
E
NEXT SHEET
2
VENT
AIR INTAKE
AIR FLOW
AIR FLOW
SIDE INLET
SIDE INLET
CONDENSATE DRAIN TRAP
LOCATION
NOTE: ALL DIMENSIONS IN INCH [MM]
[22.2]
7/8
7/8
[22.2] POWER CONN
AIR FLOW
SEE NOTE #3
NOTES:
1. Doors may vary by model.
2. Minimum return-air openings at furnace, based on metal duct. If ex duct is used,
see ex duct manufacturer's recommendations for equivalent diameters.
a. For 800 CFM-16-in. (406 mm) round or 14 1/2 x 12-in. (368 x 305 mm) rectangle.
b. For 1200 CFM-20-in. (508 mm) round or 14 1/2 x 19 1/2-in. (368 x 495 mm) rectangle.
c. For 1600 CFM-22-in. (559 mm) round or 14 1/2 x 22 1/16-in. (368 x 560mm) rectangle.
d. Return air above 1800 CFM at 0.5 in. w.c. ESP on 24.5" casing, requires one of the following
congurations: 2 sides, 1 side and a bottom or bottom only. See Air Delivery table in this
document for specic use to allow for sucient airow to the furnace.
3. Vent and Combustion air pipes through blower compartment must
use accessory “Vent Kit - Through the Cabinet”. See accessory list for
current part number.
TOP VIEW
A12267
926TA
FURNACE SIZE
A B C D
SHIP WT.
LB (KG)
CABINET WIDTH OUTLET WIDTH BOTTOM INLET WIDTH AIR INTAKE
30040
14--- 3/ 16 (361) 12--- 1/2 (319) 12--- 9/ 16 (322) 7--- 1/8 (181)
121.0 (55.0)
36060 130.5 (59.2)
36040
17--- 1/ 2 (445) 15--- 7/8 (403) 16 (406) 8--- 3/4 (222)
131.5 (59.6)
42060 142.0 (64.4)
48080 152.0 (68.9)
60080
21 (533) 19--- 3/ 8 (492) 19---1/2 (495) 10---1/2 (267)
156.0 (70.8)
60100 166.0 (75.3)
66120 24--- 1/ 2 (622) 22--- 7/8 (581) 23 (584) 12--- 1/ 4 (311) 190.0 (86.2)
926TA
16
GUIDE SPECIFICATIONS
General
System Description
Furnish a ______________________ 4 --way multipoise gas-- fired
condensing furnace for use with natural gas or propane (factory--
authorized conversion kit required for propane); 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 StarR and Blue FlameR labels. 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 600 --1200 RPM operating
only when motor inputs are provided. Blower motor shall be direct
drive and soft mounted to the blower housing 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 steel.
Draft Inducer Motor
Draft inducer motor shall be two--speed PSC 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 to 400 CFM per
ton of air conditioning. Features will also include temporary
reduced airflow in the cooling mode for improved
dehumidification when a T6--PRH is 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.
Manufacturer r es er ves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
E2017 Bryant Heating & Co ol ing Systems D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 02/ 17
Replaces: PDS926TA--- 06
Catalog No. PDS926T
--- 0 8
926TA