Bryant Complete Wiring Diagrams for Furnaces and Air Handlers

Page 7
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

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

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

Image 7 Bryant 396HAD, 394HAD instruction manual Ð7Ð, ÐUnit Wiring Diagram
Contents Care and Maintenance Safety ConsiderationsÐ1Ð Ð2Ð Air Filter ArrangementÐfilter Size Information for Down Flow Furnace Ðfilter Size Information for Upflow FurnaceÐ3Ð Blower Motor and WheelÐ4Ð Cleaning Heat ExchangerTroubleshooting Electrical Controls and WiringÐ5Ð Ð6Ð ÐHeating and Cooling Application Wiring DiagramÐ7Ð ÐUnit Wiring DiagramÐ8Ð

394HAD, 396HAD specifications

The Bryant 394HAD and 396HAD are high-efficiency air conditioning systems designed to provide optimal comfort and energy savings for residential applications. Both units are engineered with advanced technologies that make them stand out in the competitive HVAC market.

One of the main features of both the 394HAD and 396HAD is their impressive Seasonal Energy Efficiency Ratio (SEER) ratings. These models boast SEER ratings exceeding 16, which means they convert a greater portion of energy into cooling, resulting in lower energy bills and reduced environmental impact. The higher the SEER rating, the more energy-efficient the unit, making these models a smart choice for homeowners looking to minimize their carbon footprint.

Another significant characteristic is the variable-speed compressor technology employed in both models. This innovative feature allows the units to adjust their cooling output based on the specific needs of the home, leading to improved comfort levels and energy savings. The variable-speed operation provides a quieter performance, as the system operates at lower speeds during off-peak times, reducing noise pollution and enhancing indoor comfort.

The Bryant 394HAD and 396HAD models are also equipped with advanced refrigeration technologies, including a state-of-the-art coil design. These systems utilize enhanced aluminum or copper coils that improve heat exchange efficiency, maximizing the cooling performance. Furthermore, both models include a durable, weather-resistant cabinet that protects the internal components from harsh outdoor conditions, ensuring longevity and reliable operation.

In terms of convenience and ease of use, both units are compatible with Bryant’s smart thermostats and home automation systems. This integration enables homeowners to control their HVAC systems remotely, adjust settings, and monitor energy consumption, providing added comfort and peace of mind.

Lastly, the Bryant 394HAD and 396HAD are backed by a robust warranty program, reflecting the manufacturer’s commitment to quality and customer satisfaction. With a combination of cutting-edge technology, high efficiency, and user-friendly features, these air conditioning models are excellent options for achieving a comfortable home environment while also being mindful of energy usage.