Bryant 396HAD, 394HAD instruction manual ÐUnit Wiring Diagram

Models: 394HAD 396HAD

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Fig. 9ÐUnit Wiring Diagram
319593-401 REV. C

Ð7Ð

 

CONNECTION

 

 

 

 

 

GV

 

 

 

DSS

 

 

 

 

 

 

 

DIAGRAM

 

 

 

 

 

MGV

 

 

 

 

 

 

 

 

PRS

 

 

 

 

 

TR

TH

 

BRN

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PILOT

 

 

 

 

 

 

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALS

 

FL

 

 

LS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(WHEN USED)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #7

 

 

 

 

 

 

 

 

 

 

 

 

 

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IDM

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLU

 

 

 

 

 

 

 

 

 

FUSED DISCONNECT

 

 

 

 

TRAN

 

 

 

 

 

 

 

 

 

 

 

ILK

 

 

WHT

 

 

 

 

 

 

 

 

 

 

 

SWITCH (WHEN REQ'D)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #5

PL2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

BLK

 

WHT

 

 

 

 

WHT

 

 

 

BRN ORN

 

 

 

FU2

 

 

2

 

BLK

BLK BLU

RED

BLK

RED

RED

BLU

 

YEL

 

WHT

 

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GRN

 

COM

 

 

 

 

PL1 1

 

4

7

 

 

 

 

GRN

 

 

 

 

PR2 L2

L1

 

 

 

 

 

 

 

 

 

 

JB

 

 

CFR

HFR

PR1

 

 

2

 

5

8

 

 

 

 

 

 

 

 

 

 

 

3

 

6

9

 

 

 

 

 

 

 

 

 

LO

 

 

 

 

 

 

 

 

 

NOTE #4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LO

PL4

 

 

 

HI

 

 

 

 

 

 

 

 

 

 

 

BLWM

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MED LO

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MED HI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

IDR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HI

1

BLK

EAC-1

NOTE #10

 

 

 

 

 

COM

WHT

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SEC-2

 

 

 

 

EAC-2

 

 

 

 

 

BRN

BRN

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #9

 

 

SEC-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FU1

PCB

CAP

 

 

 

W

Y

R

C

G

 

 

 

 

3AMP

GROUND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FUSE

SCREW

 

 

 

 

 

 

 

 

 

NOTE #8

REQ'D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #1

 

L1 L2

 

TO 115V AC FIELD DISCONNECTIONS

SCHEMATIC

 

 

 

NOTE #5

DIAGRAM

ILK Manual background

EQUIPMENT GROUND

PL2

 

 

 

 

 

 

 

 

 

 

 

L1

HFR

 

 

CFR

 

4

 

LO

 

L2

 

 

 

 

 

 

3

 

MED LO

 

 

 

 

 

 

 

 

 

 

 

NOTE#10

 

 

 

 

2

 

MED HI

 

 

 

 

 

 

 

1

 

HI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

COM

BLWM

 

 

 

 

 

 

COM

PL4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EAC-1

EAC-2

 

NOTE#4

CAP

 

 

 

 

 

 

 

 

 

 

 

IDR

 

 

 

 

PL1-3

 

 

 

 

IDM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PL1-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PR-1

115VAC

PR-2

 

LS

FL

ALS

PL1-4

 

FU1

 

TRAN

 

PL1-7

 

 

 

 

 

 

3A

 

SEC-1

24VAC

SEC-2

 

 

 

 

 

 

FUSE

 

 

 

 

(WHEN USED)

NOTE#8

 

 

 

NOTE #7

 

 

 

 

 

 

 

 

 

 

HFR

 

R

 

 

 

LOGIC

 

PL1-9

 

 

 

TIME

 

 

 

 

 

 

 

 

 

 

DELAY

 

 

DSS

 

MGV

GV

PL1-8

 

 

 

 

Y

 

 

TH

TR

 

PRS

 

 

 

 

 

NO

C

 

PILOT

 

 

NC

 

 

 

 

 

 

 

 

PL1-6

 

PL1-2

 

 

 

IDR

 

 

 

 

W

 

 

 

 

 

 

 

 

 

IDR

 

CFR

 

 

 

 

 

G

 

NOTE #10

 

 

 

LEGEND

 

ALS

AUX. LIMIT SWITCH (OVER TEMP), SPST-(N.C.),

 

MANUAL RESET

BLWM

BLOWER MOTOR

CAP

CAPACITOR

CFR

COOLING FAN RELAY, SPDT

DSS

DRAFT SAFEGUARD SWITCH, SPST-(N.C.), MANUAL RESET

EAC-1

ELECTRONIC AIR CLEANER CONNECTION (115VAC)

EAC-2

ELECTRONIC AIR CLEANER CONNECTION (COMMON)

FU1

FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE

FU2

FUSE, FIELD INSTALLED

FL

FUSIBLE LINK

GV

GAS VALVE, (REDUNDANT)

HFR

HEATING FAN RELAY, SPST (N.O.)

IDM

INDUCED DRAFT MOTOR

IDR

INDUCER DRAFT RELAY, DPST-(N.O.)

ILK

BLOWER DOOR INTERLOCK SWITCH, SPST-(N.O.)

JB

JUNCTION BOX

LS

LIMIT SWITCH (OVER TEMP), SPST-(N.C.), AUTO RESET

PCB

PRINTED CIRCUIT BOARD (FURNACE CONTROL)

PL1

9-CIRCUIT CONNECTOR (PCB1)

PL2

2-CIRCUIT CONNECTOR (L1, L2)

PL4

5-CIRCUIT PLUG CONNECTOR (BLWM)

PRS

PRESSURE SWITCH, SPDT

TRAN

TRANSFORMER (115VAC/24VAC)

JUNCTION

TERMINAL PCB TERMINAL

FACTORY POWER WIRING (120VAC)

FACTORY CONTROL WIRING (120VAC) FIELD POWER WIRING (120VAC)

CONDUCTOR ON PCB

FIELD WIRING SCREW TERMINAL

FIELD GROUND

EQUIPMENT GROUND

FIELD SPLICE

PLUG RECEPTACLE

C

Manual background NOTE #1

NOTES:

1.INTERNALLY CONNECTED TO EQUIPMENT GROUND THROUGH MOUNTING SCREW.

2.IF ANY OF THE ORIGINAL EQUIPMENT WIRE IS REPLACED, USE WIRE RATED FOR 105° C.

3.BLOWER MOTOR (BLWM) & INDUCER MOTOR (IDM) CONTAIN AUTO-RESET THERMAL OVERLOAD SWITCH.

4.BLOWER MOTOR FACTORY SPEED SELECTIONS (PL4) ARE FOR AVERAGE CONDITIONS. SEE INSTALLATION INSTRUCTIONS FOR DETAILS ON OPTIMUM SPEED SELECTIONS.

5.USE ONLY COPPER WIRE BETWEEN THE DISCONNECT SWITCH AND THE FURNACE JUNCTION BOX (JB).

6.SYMBOLS ARE ELECTRICAL REPRESENTATIONS ONLY.

7.AUXILIARY LIMIT SWITCH (ALS) USED ON DOWNFLOW MODELS ONLY.

8.THE TRANSFORMER 24VAC WINDING IS PROTECTED BY A 3 AMP AUTOMOTIVE BLADE TYPE FUSE ON THE CONTROL BOARD. A 24VAC SHORT TO GROUND DURING INSTALLATION, CHECKOUT, OPERATION, SERVICE OR MAINTENANCE COULD CAUSE THIS FUSE TO OPEN. DO NOT REPLACE THE 3 AMP FUSE WITH ANY OTHER SIZE FUSE.

9.BLOWER MOTOR (BLWM) ADJUSTABLE OFF-DELAY. FACTORY SET: 120 SECS.

CUT RESISTOR: 180 SECS.

10. WHEN CFR RELAY IS ENERGIZED, HFR RELAY IS ALSO ENERGIZED.

A92176

Fig. 9ÐUnit Wiring Diagram

Page 7
Image 7
Bryant 396HAD, 394HAD instruction manual ÐUnit Wiring Diagram