322869-101 REV. H

Ð7Ð

 

 

 

 

 

 

 

SW2

 

 

 

 

(WHEN USED)

(WHEN USED)

 

 

PCB

 

 

BLOWER

 

 

G

 

NOTE #14

NOTE #11

 

(WHEN USED)

NOTE #9

 

 

 

 

R

DSS

 

BVSS

ALS

PRS

LGPS

 

OFF

 

 

 

 

Y

 

 

 

 

 

 

 

 

(NOT ON ALL MODELS)

DELAY

SW1

 

 

W

ORN

ORN

ORN

ORN

ORN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLOWER OFF DELAY

 

 

 

 

 

 

COM

 

 

 

 

 

 

 

 

SELECTION CHART

 

 

 

 

 

 

HUM

 

 

 

 

 

 

YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #13

 

 

 

90

SEC

 

TEST/TWIN

 

 

 

 

 

NOTE #14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

135 SEC

 

 

 

 

 

 

LED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLU

LS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #15

 

 

 

180 SEC

 

 

 

 

 

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

225 SEC

 

PL1

3

2

1

 

 

 

(WHEN USED) NOTE #11

 

 

GV

 

 

 

 

 

 

 

 

 

 

WHT

 

 

 

 

 

 

 

 

 

 

 

6

5

4

 

FSE

 

FL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GVR

 

 

 

9

8

7

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FRS1

FRS2

 

GRN/YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SEC-1

SEC-2

 

 

 

 

GRN/YEL

 

NOTE #5

 

 

 

 

 

 

 

 

BLU

 

BLK

 

 

 

 

 

 

 

HI/LO

 

 

 

 

 

 

 

TRAN

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

RED

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24 VAC-3A

 

 

 

 

WHT (COM)

 

 

 

 

 

 

FU1

FUSE

 

 

 

 

 

 

 

 

 

 

 

 

BLK (HI)

 

 

GRN/YEL

 

 

 

 

 

 

 

BLOWER

 

 

 

 

 

 

 

 

 

HSIR

IDR

BLWR

COOL

 

 

 

 

 

 

BRN

 

 

 

SPEED

SPARE-1

 

 

OL

 

 

 

 

 

 

 

 

SELECT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YEL (MED HI)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

START

 

 

 

 

 

 

 

 

 

L2

HEAT

SPARE-2

NOTE #7

 

CAP

 

 

 

 

 

 

PL3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EAC-1

 

 

 

 

 

 

 

 

120

VAC

 

PL2

2

PR2

 

AMP

BLU (MED LO)

 

BRN

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

L1

PR1

 

2

3

COM

 

EAC-2

1.5

RED

(LO)

 

BLWM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHT

 

 

 

 

 

WHT (COM)

WHT

 

 

 

 

BLK

BLK

BLK

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PL5

 

 

 

 

 

 

 

 

 

 

 

FUSED DISCONNECT

 

 

 

 

 

WHT

 

 

 

 

 

 

 

ILK

JB

SWITCH (WHEN REQ’D)

 

 

1

2

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IDM

 

 

 

 

 

 

L1

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FU2

 

 

 

 

 

 

 

 

 

 

GRN/YEL

 

 

 

 

 

 

 

 

HSI

 

 

 

 

 

 

 

 

 

 

WHT

 

NEUTRAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

TO 115VAC FIELD DISCONNECT

 

 

 

 

 

SCHEMATIC DIAGRAM

L1

L2

 

 

 

 

 

(NATURAL GAS & PROPANE)

NOTE #4

 

EQUIPMENT GROUND

 

 

 

 

ILK

 

 

 

 

 

 

 

 

LO

 

L2

 

 

 

 

SPARE-2

 

 

 

 

 

 

 

 

 

 

MED LO

 

 

 

 

 

 

 

HEAT

 

 

 

 

 

 

 

 

 

 

 

 

 

MED HI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPARE-1

 

 

HI

START

 

 

 

HI/LO

 

 

OL

L1

BLWR

 

NOTE #7

 

 

 

 

 

 

COOL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM

 

COM

 

BLWM

 

 

EAC-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HSIR

 

EAC-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

1

HSI

 

 

 

 

 

 

 

PL2

2

PL5

2

 

 

IDM

 

IDR

 

 

 

 

 

 

 

 

 

 

 

 

 

PR1

115VAC

 

PR2

1

 

 

 

 

 

 

TRAN

 

 

 

 

3

PL3

 

 

 

 

 

 

 

24VAC

 

 

2

NOT USED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TEST/TWIN

FU1

NOTE #6

 

 

 

 

 

 

 

 

 

 

 

SEC-1

 

SEC-2

 

FRS1

 

FRS2

NOTE #12

 

 

 

 

 

 

 

 

 

 

 

 

GVR-2

 

 

 

 

7

 

 

 

HUM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(WHEN USED)

 

 

 

 

 

 

 

 

 

 

FL

 

 

 

 

 

 

 

 

1

NOTE #11

 

R

 

 

 

 

 

 

 

 

LS

 

 

 

 

 

 

 

 

 

 

NOTE #13

 

 

 

 

 

 

 

 

 

 

 

W

 

 

 

 

 

 

 

 

NOTE #13

LGPS

PRS

 

 

 

 

 

 

 

4

PL1

(WHEN USED)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HSIR

BLWR

 

HI/LO

 

 

(WHEN USED)

 

 

 

 

IDR

 

 

 

GVR

 

DSS

NOTE #14

 

 

 

 

 

 

 

 

 

 

BVSS

 

 

 

 

 

 

 

 

 

3

 

 

ALS

 

 

 

 

 

 

 

 

 

 

NOTE #14

 

 

 

 

 

 

 

 

 

 

(WHEN USED)

 

 

 

 

 

 

 

 

 

NOTE #15

 

 

 

CPU

 

 

 

 

 

 

 

 

 

 

 

GVR-1

 

 

 

 

 

 

 

 

 

 

2

 

 

GV

 

 

 

 

 

 

 

 

 

 

Y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEGEND

ALS

AUXILIARY LIMIT SWITCH, OVERTEMP. -MANUAL RESET, SPST-(N.C.)

BLWR

BLOWER MOTOR RELAY, SPST-(N.O.)

BLWM

BLOWER MOTOR

BVSS

BLOCKED VENT SHUTOFF SWITCH, SPST - (N.C.)

CAP

CAPACITOR

CPU

MICROPROCESSOR AND CIRCUITRY

DSS

DRAFT SAFEGUARD SWITCH

EAC-1 ELECTRONIC AIR CLEANER CONNECTION (115 VAC 1.5 AMP MAX.)

EAC-2 ELECTRONIC AIR CLEANER CONNECTION (COMMON)

FL

FUSIBLE LINK

FRS

FLAME ROLLOUT SW. -MANUAL RESET, SPST-(N.C.)

FSE

FLAME PROVING ELECTRODE

FU1

FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE, FACTORY INSTALLED

FU2

FUSE OR CIRCUIT BREAKER CURRENT INTERRUPT DEVICE

 

(FIELD INSTALLED & SUPPLIED)

GV

GAS VALVE-REDUNDANT OPERATORS

GVR

GAS VALVE RELAY, DPST-(N.O.)

HI/LO

BLOWER MOTOR SPEED CHANGE RELAY, SPDT

HSI

HOT SURFACE IGNITOR (115 VAC)

HSIR

HOT SURFACE IGNITOR RELAY, SPST-(N.O.)

HUM

24VAC HUMIDIFIER CONNECTION (.5 AMP. MAX.)

IDM

INDUCED DRAFT MOTOR

IDR

INDUCED DRAFT RELAY, SPST-(N.O.)

ILK

BLOWER ACCESS PANEL INTERLOCK SWITCH, SPST-(N.O.)

JB

JUNCTION BOX

LED

LIGHT-EMITTING DIODE FOR STATUS CODES

LGPS

LOW GAS PRESSURE SWITCH, SPST-(N.O.)

LS

LIMIT SWITCH, AUTO RESET, SPST(N.C.)

OL

AUTO-RESET INTERNAL MOTOR OVERLOAD TEMP. SW.

 

PCB

PRINTED CIRCUIT BOARD

 

PL1

9-CIRCUIT CONNECTOR

 

PL2

2-CIRCUIT PCB CONNECTOR

 

PL3

3-CIRCUIT IDM CONNECTOR

 

PL5

2-CIRCUIT HSI/PCB CONNECTOR

 

PRS

PRESSURE SWITCH, SPST-(N.O.)

 

TEST/TWIN

COMPONENT TEST & TWIN TERMINAL

 

TRAN

TRANSFORMER-115VAC/24VAC

 

 

 

 

 

JUNCTION

 

 

 

 

 

 

 

 

 

 

UNMARKED TERMINAL

 

 

 

 

 

PCB TERMINAL

 

 

 

 

 

FACTORY WIRING (115VAC)

 

 

 

 

 

 

 

 

 

 

FACTORY WIRING (24VAC)

 

 

 

 

 

 

 

 

 

 

FIELD WIRING (115VAC)

 

 

 

 

 

FIELD WIRING (24VAC)

 

 

 

 

 

CONDUCTOR ON PCB

 

 

 

 

 

 

 

 

 

 

FIELD WIRING TERMINAL

 

 

 

 

 

FIELD GROUND

 

 

 

 

 

EQUIPMENT GROUND

 

 

 

 

 

FIELD SPLICE

 

 

 

 

 

PLUG RECEPTACLE

8

NOTE #5

 

G

 

5

FSE

 

6

NOT USED

COM

NOT USED

9

NOTES:

1.If any of the original equipment wire is replaced use wire rated for 105°C.

2.Inducer (IDM) and blower (BLWM) motors contain internal auto-reset thermal overload switches (OL).

3.Blower motor speed selections are for average conditions, see installation instructions for details on optimum speed selection.

4.Use only copper wire between the disconnect switch and the furnace junction box (JB).

5.This wire must be connected to furnace sheetmetal for control to detect flame.

6.Replace only with a 3 amp fuse.

7.Yellow lead not on all motors.

8.Blower-on delay, gas heating 45 seconds, cooling or heat pump 2 seconds.

9.Blower-off delay, gas heating 90, 135, 180 or 225 seconds, cooling or heat pump 90 seconds.

(135 seconds only on some models)

10.Ignition-lockout will occur after four consecutive unsuccessful trials-for-ignition. Control will auto-reset after three hours.

11.When used, auxiliary limit switch (ALS) is on some downflow models only. When used, FL is on upflow models only.

12.Some models may have spade quick connect terminals.

13.Factory connected when LGPS is not used.

14.Factory connected when BVSS is not used. BVSS used when Chimney Adapter Accessory Kit is installed.

15. Gas valve leads are interchangeable on single stage valves.

Fig. 7ÐUnit Wiring Diagram

A00304

Page 7
Image 7
Bryant 393AAV instruction manual Pcb, Ð7Ð

393AAV specifications

The Bryant 393AAV is a high-efficiency gas furnace designed to deliver reliable heating performance for residential applications. Crafted for homeowners seeking both comfort and energy savings, this model combines advanced technology with robust features to ensure optimal indoor climate control.

One of the standout characteristics of the Bryant 393AAV is its variable-speed ECM blower motor. This innovative motor allows for smooth and quiet operation while also enhancing energy efficiency. By adjusting its speed based on the heating demands of the home, the unit promotes consistent temperatures and improved airflow, ensuring that every room is evenly heated.

The furnace has an Annual Fuel Utilization Efficiency (AFUE) rating of up to 96.5%, making it one of the most efficient options available. This high AFUE rating signifies that a significant portion of the fuel consumed is converted into usable heat, leading to reduced utility bills and a smaller carbon footprint. The 393AAV’s two-stage gas valve further contributes to its efficiency. By operating at a lower capacity during milder conditions and switching to a higher capacity when temperatures drop, this feature allows homeowners to enjoy a comfortable environment while minimizing energy consumption.

In terms of durability, the Bryant 393AAV is built to last. It features a corrosion-resistant heat exchanger constructed from premium materials to withstand the test of time. Additionally, the furnace is equipped with a reliable ignition system, ensuring safe and efficient startup with each heating cycle. The design includes an insulated cabinet that not only reduces noise levels but also improves energy efficiency by minimizing heat loss.

Installation and maintenance of the Bryant 393AAV are user-friendly. The unit has a compact design that makes it easier to fit into various spaces within the home. Regular maintenance is facilitated through access panels that allow technicians to reach key components with ease, promoting longevity and sustained performance.

In conclusion, the Bryant 393AAV is a modern gas furnace that excels in efficiency, comfort, and reliability. With features like a variable-speed blower motor, high AFUE ratings, and a robust design, homeowners can trust this unit to provide consistent heating while helping to reduce overall energy costs. This furnace is an excellent choice for those looking to invest in a heating solution that aligns with both comfort and sustainability goals.