Bryant 331JAV User Manual

PLUS 80t with Perfect Heat™
DOWNFLOW

California Approved

331JAV

Sizes 060 thru 100

INDUCED-COMBUSTION FURNACE

The Plus 80t Downflow Furnace achieves 80 percent Annual
Fuel Utilization Efficiency (AFUE) rating. The benefits of Perfect
Heat operation in reducing sound and improving comfort put it in
a class well ahead of the competition. The Plus 80t has the kind
of overall performance needed in today’s homes. All models are
GAMA efficiency rating certified and certified for use in California
Air Quality Management Districts.

FEATURES

EFFICIENCY — The Plus 80t Induced-Combustion Gas Fur-

nace provides the efficiency customers want with 80.0% AFUE.

HOT SURFACE IGNITION — No pilot to waste gas with this

field-proven ignition system.

ALUMINIZED HEAT EXCHANGER — The patented 4-pass

heat exchanger is made of aluminized steel and backed by a
20-year Limited Warranty.

INTELLIGENT CONTROL — The Plus 80t has an intelligent

control that monitors the operation of the furnace. This control
also has a component-test feature that enables the servicing
technician to verify operation of the control; the high and low in­ducer; the hot surface ignitor; and high-, medium-, and low­speed blower operation. The control features a 3-amp fuse that
protects the transformer and control. We guarantee the reliability
of the control with a 3-year Limited Warranty.

40-IN. HEIGHT — The Plus 80t cabinet height is only 40 in.

This simplifies installation in alcoves, attics, basements (ideal
for short basement), closets, and utility rooms, especially with
a taller high-efficiency cooling coil.

PREPAINTED CABINET — The Plus 80t uses prepainted sheet

metal for the cabinet. This is the same high-quality finish found
on refrigerators and other appliances today. We ensure its dura­bility by using a galvanized steel substrate to provide superior
rust protection.

PATENTED BLOCKED VENT SAFEGUARD — Our induced-

combustion furnace has a patented blocked vent safeguard. The
safeguard switch will stop furnace operation if the vent system
becomes blocked or is not operating properly. An exclusive with
the Plus 80t furnace.

EASY INSTALLATION — The Plus 80t has many features that

make installation easier: left or right gas and electrical connec­tions, heating and cooling blower speed selector, matching coil
sizes, accessory low-voltage connections, and many more.

QUIET OPERATION — A soft mount inducer assembly and 2-

stage slow-opening gas valve reduce sound level. The Perfect
Heat operation capability minimizes furnace and air noise for
total home comfort.

Series C

Form No. PDS 331J.60.4

*

1

28

⁄2″

20″

13

⁄16″

7

39

⁄8″

11

⁄16″

INLET

7

⁄8″ DIA

ACCESSORY

3

1

⁄4″ DIA HOLE

GAS ENTRY

OUTLET

19″

ADDITIONAL

NOTE:

LOCATED IN THE TOP PLATE
AND BOTTOM PLATE

NOTES:

1. Two additional 7⁄8-in. dia holes are located in the top plate.

2. Minimum return-air openings at furnace, based on metal duct. If flex duct is used,
see flex duct manufacturer's recommendations for equivalent diameters.
a. For 800 CFM–16-in. round or 14
b. For 1200 CFM–20-in. round or 141⁄2 x 191⁄2-in. rectangle.
c. For 1600 CFM–22-in. round or 14
d. For airflow requirements above 1800 CFM, must use entire return air opening.

7

⁄8″ DIA K.O. ARE

VENT CONNECTION

13

⁄16″

1

9

⁄8″

1

10

⁄4″

1

1

⁄16″

1

2

⁄8″

1

8

⁄4″

11

⁄16″

AIRFLOW

D

E

A

DIMPLES TO DRILL HOLES
FOR HANGER BOLTS (4 PLACES)
IN HORIZONTAL POSITION

1

⁄2 x 12-in. rectangle.

1

⁄2 x 231⁄4-in. rectangle.

11

16

⁄16″

1

13

4

⁄16″

3

⁄16″

15

2

⁄16″

5

⁄16″

1

10

⁄4″

1

⁄2″ DIA

2″

THERMOSTAT
WIRE ENTRY

7

⁄8″ DIA

ACCESSORY

7

⁄8″ DIA HOLE

POWER ENTRY

1

1

⁄2″ DIA

R.H. GAS ENTRY

7

⁄8″ DIA

ACCESSORY

1

1

⁄16″

1

2

⁄8″

1

″ TYP

5

⁄8″ TYP

DIMENSIONS (In.)

UNIT SIZE A D E VENT CONN (Dia) SHIPPING WEIGHT (Lb)

036060 14-3/16 12-9/16 12-11/16 4 145
048080 17-1/2 15-7/8 16 4 154
060100 21 19-3/8 19-1/2 4 181

A99109

ACCESSORY DOWNFLOW SUBBASE

LOCATING

TAB

B

A

Assembled

LOCATING

TAB

D

Disassembled

4

3

2

1

FACTORY-SUPPLIED

3

4

A88207

1

2

FIELD-INSTALLED

INSULATION

DIMENSIONAL DATA (In.)

PLENUM OPENING *

FURNACE WIDTH

14-3/16 11-13/16 19 13-7/16 20-3/8 4

17-1/2 15-1/8 19 16-3/4 20-3/8 3

21 18-5/8 19 20-1/4 20-3/8 2

The plenum should be constructed 1/4 in. smaller in width and depth than the plenum dimensions shown above.

FRAMED FLOOR HOLE

1 1⁄4″ TYP

WIDTH ADJUSTMENTABCD

PLENUM
OPENING

C

A88206

HOLE NO. FOR

ama

MEETS DOE RESIDENTIAL CONSERVATION
SERVICES PROGRAM STANDARDS.

Before purchasing this appliance, read important
energy cost and efficiency information available
from your retailer.

CERTIFIED

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