915SA 95 AFUE
LEGACY LINE SINGLE--STAGE
4--WAY MULTIPOISE
CONDENSING GAS FURNACE
Product Data
A11264
The 915S Multipoise Condensing Gas Furnace is part of the
Legacy Line product offering. Sporting a PSC blower motor and
an Annual Fuel Utilization Efficiency (AFUE) of 95.5%, this
single-stage gas furnace provides efficient comfort for
homeowners. This Legacy Line Gas Furnace also features 4-way
multipoise installation flexibility, and is available in nine model
sizes. The 915S can be vented for direct vent/two-pipe, ventilated
combustion air, or single-pipe applications. A BryantR Air
Conditioner or Heat Pump can be used to form a complete system.
All units meet California Air Quality Management District
emission requirements. These furnaces are approved for
Manufactured Housing (Mobile Home) applications. All sizes are
design certified in Canada.
STANDARD FEATURES
S 4-way multipoisedesign for upflow, downflow or horizontal
installation.
S Optional through-the-cabinet downflow venting.
S Installation flexibility with a 360-degree rotating elbow.
S Ideal condensing furnace height 35” cabinet: short enough for
taller coils, but still allows enough room for service.
S Silicon Nitride Perfect Lightt Hot Surface Igniter.
S Aluminized-steel primary heat exchanger.
S Stainless-steel condensing secondary heat exchanger.
S High-quality corrosion-resistant prepainted steel cabinet with
hemmed edges for safety.
S Factory-configured ready for upflow applications.
S Direct-vent/sealed combustion, single-pipe venting or ventilated
combustion air.
S PSC blower motor, single-speed inducer motor, and single-stage
gas valve.
S Self-diagnostics
S Approved for Twinning applications (42060 through 60120
sizes, only).
S Propane convertible (See accessory list).
S Approved for Manufactured Housing/Mobile Homeapplications
(except 140,000 Btuh input) with MH accessory kit.
S Convenient Air Purifier and Humidifier connections.
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-inch water column with all
present air inlets, air outlets, and condensate drain port(s) are
sealed.
LIMITED WARRANTY*
S 10 year parts and lifetime heat exchanger limited warranty to the
original purchaser upon timely registration.
S Limited 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.
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.
† Capacity in accordance with DOE test procedures. See rating plate.
‡ Heating CFM at factory default blower motor heating tap settings.
ESP --- External Static Pressure
(IN.)
HDW(BTUH)AFUECFM‡
RATED HEATING
OUTPUT†
HEATING AIRFLOW
Heating
ESP
(in. WC)
COOLING
CFM
@0.5ESP
(in WC)
MOTOR HP-SPEED
APPROX SHIP
WEIGHT (LB)
FEATURES AND BENEFITS
HYBRID HEATR Dual Fuel system — This system can provide
more control over your monthly energy bills by automatically
915SA
selecting the most economical method of heating. With HYBRID
HEAT, our system automatically switches between the gas furnace
and the single--stage 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.
Reliable Heat Exchanger Design — The aluminized steel,
clamshell primary heat exchanger was reengineered 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.
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 sound of the burners.
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.
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SPECIFICATIONS
Heating Capacity and Efficiency300403006042060480806008042100601006012060140
InputHigh
OutputHigh
EfficiencyAFUE % (ICS)95.595.595.595.595.595.595.595.595.5
Certified Temperature
Rise Range ºF (ºC)
Airflow Capacity and Blower Data300403006042060480806008042100601006012060140
Certified External Static
Pressure (in. w.c.)
Airflow Delivery
@ Rated ESP (CFM)
Cooling Capacity (tons)
@ 400, 350 CFM/ton
Direct-Drive Motor TypePermanent Split Capacitor (PSC)
Direct-Drive Motor HP0.50.50.50.750.750.750.750.750.75
Motor Full Load Amps6.26.26.87.913.86.513.814.114.1
RPM Range500-1150
Speed Selections445555555
Blower Wheel Dia x Widthin. 11 x 711 x 711 x 811 x 811 x 10 11 x 10 11 x 10 11 x 11 11 x 11
Air Filtration SystemField Supplied
Filter Used for Certified Watt Data
Input VoltageVolts-Hertz-Phase115-60-1
Operating Voltage RangeMin-Max104-127
Maximum Input AmpsAmps6.87.08.49.614.57.614.614.914.9
Unit AmpacityAmps9.59.711.513.019.110.419.219.619.6
Minimum Wire SizeAWG141414141214121212
Maximum Wire LengthFeet393832283035292929
@ Minimum Wire Size(M) (11.9)(11.6)(9.8)(8.5)(9.1)(10.7)(8.8)(8.8)(8.8)
Maximum Fuse/Ckt Bkr
(Time-Delay Type Recommended)
Transfomer Capacity (24vac output)40 VA
External Control Power AvailableHeating27.9 VA
1. A filter is required for each return---air inlet. Airflow performance includes a 3/4---in. (19 mm) washable filter media such as contained in a factory ---authorized accessory filter rack. See accessory list. To determine airflow performance without this filter, assume an additional 0.1 in. w.c.. available external static
pressure.
2. Blower speed taps are not always in the same order. Factory default blower connections are as follows:
a. Heating airflow --- BLUE (also used for Continuous Fan)
b. Cooling airflow --- BLACK (enabled when the Y terminal is energized)
ADJUST THE BLOWER SPEED TAPS AS NECESSARY FOR THE PROPER AIR TEMPERATURE RISE FOR EACH INSTALLATION.
3. Airflows over 1800 CFM require bottom return, two --- side retur n, or bottom and side return. A minimum filter size of 20” x 25” (508 x 635 mm) is required.
4. 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.
5. Highlighted areas indicate that this airflow range is beyond the range allowed for heating. THESE AIRFLOW RANGES MAY ONLY BE USED FOR COOL-
ING.
BOTTOM or
TWO-SIDES
3,4
Blue2260219021102020192518251700160014951385
5
Yellow
1660165016351615158015301475141013201230
Orange51430144514401420139013551310124511751085
5
Red
128512851260125512301205116511151055975
EXTERNAL STATIC PRESSURE (IN. W.C.)
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MAXIMUM EQUIVALENT VENT LENGTH -- FT. (M)
Table 1 – Maximum Equivalent Vent Length -- Ft. (M)
0 to 4500 Ft. (0 to 1370 M) Altitude
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 2 – Deductions from Maximum Equivalent Vent Length -- Ft. (M)
Pipe Diameter (in):1-1/222-1/234
Mitered 90º Elbow8(2.4)8(2.4)8(2.4)8(2.4)8(2.4)
Medium Radius 90º Elbow5(1.5)5(1.5)5(1.5)5(1.5)5(1.5)
Long Radius 90º Elbow3(0.9)3(0.9)3(0.9)3(0.9)3(0.9)
Mitered 45º Elbow4(1.2)4(1.2)4(1.2)4(1.2)4(1.2)
Medium Radius 45º Elbow2.5(0.8)2.5(0.8)2.5(0.8)2.5(0.8)2.5(0.8)
Long Radius 45º Elbow1.5(0.5)1.5(0.5)1.5(0.5)1.5(0.5)1.5(0.5)
Tee16(4.9)16(4.9)16(4.9)16(4.9)16(4.9)
Concentric Vent TerminationNA0(0.0)NA0(0.0)NA
Standard Vent Termination0(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.
915SA
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 radius3x3 ft.=- 9 ft.(From Table 2)
Deduct (2) 45 long radius2x1.5 ft.=- 3 ft.(From Table 2)
No deduction for Concentric Vent Kit0 ft.=- 0 ft.(From Table 2)
Maximum Vent Length=115 ft.For EACH vent or inlet pipe
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MAXIMUM EQUIVALENT VENT LENGTH -- FT. (M) (CONTINUED)
Table 3 – Maximum Equivalent Vent Length -- Ft. (M)
4501 to 10,000 Ft. (0 to 1370 M) Altitude
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.
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 resul t.
3. Total equivalent vent lengths un der 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 r equiring 4---in. (102 mm) diameter pipe.
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.
80/ 27˚C
SUPPLY AIR
60
/ 16˚C
A10490
MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS
POSITIONCLEARANCE
Rear0(0mm)
Front (Combustion air openings in furnace and in structure)1in.(25mm)
Required for service*24 in. (610 mm)
All Sides of Supply Plenum1in.(25mm)
Sides0(0mm)
Ve n t0(0mm)
* Recommended
Top of Furnace1in. (25mm)
915SA
COMBUSTION--AIR PIPE FOR NON--DIRECT (1--PIPE) VENT APPLICATION
*The plenum should be constructed 1/4 ---in. (6 mm) smaller in width and depth than the plenum dimensions shown above.
FURNACE IN DOWNFLOW
APPLICATION
Furnace with or without Cased Coil
Assembly or Coil Box
Furnace with or without Cased Coil
Assembly or Coil Box
Furnace with or without Cased Coil
Assembly or Coil Box
PLENUM OPENING*FLOOR OPENING
ABCD
15--- 1/8
(384.2)
18--- 5/8
(396.4)
22--- 1/8
(562.0)
19 (482.6)
19 (482.6)
19 (482.6)
16--- 3/4
(425.5)
20--- 1/4
(514.4)
23--- 3/4
(603.3)
Disassembled
20--- 3/8
(517.5)
20--- 3/8
(517.5)
20--- 3/8
(517.5)
1
2
3
4
A88207
HOLE NO. FOR
WIDTH
ADJUSTMENT
3
2
1
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.
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23-5/8"
(600mm)
23-3/8”
(594mm)
MEDIA FILTER CABINET
A
25-5/8"
(651mm)
24-1/4”
(616mm)
Opening with Flanges Bent
23-1/8”
(588mm)
Opening
B Opening
Furnace Side
23-3/4”
(603mm)
Centerline Screw Slots
FIVE WIRE
THREE-WIRE
HEATING-ONLY
BLOWER DOOR SWITCH
BLK
WHT
115-V FIELD-
SUPPLIED
BLK
WHT
GND
AUXILIARY
J-BOX
DISCONNECT
GND
FURNACE
3
"
5
4
(146mm)
TYPICAL WIRING SCHEMATIC
NOTE 2
W
C
R
O
N
T
G
R
O
COM
L
Y
24-V
TERMINAL
BLOCK
WCRGY
NOTE 1
NOTES:Connect Y-terminal in furnace as shown for proper blower operation.
1.
2.
Some thermostats require a "C" terminal connection as shown.
3.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
THERMOSTAT
TERMINALS
TWO
WIRE
Duct Side
Media Filter
Cabinet
16" (406mm)
20" (508mm)
24" (610mm)
A
17" (432mm)
21" (533mm)
25" (635mm)
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
FIELD-SUPPLIED
DISCONNECT
GND
CONDENSING
UNIT
B
16" (406mm)
20" (508mm)
24" (610mm)
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
915SA
A11456
A11387
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915SA
DIMENSIONAL DRAWING
A11612
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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 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 StarR and 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 PSC Blower Motor
Galvanized blower wheel shall be centrifugal type, statically and
dynamically balanced. Blower motor of PSC type shall be
permanently lubricated with sleeve bearings, of _______hp, and
have multiple speeds from 500--1150 RPM operating only when
115--VAC 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
Draft inducer motor shall be single--speed design.
Motor
Primary Heat
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
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 blower speeds for heating,
cooling, and continuous fan.