Bryant 340MAV instruction manual Pcb

Page 21

—21—

 

 

 

 

 

BLOWER OFF DELAY

 

 

 

 

 

(WHEN USED)

 

TO 115VAC FIELD DISCONNECT

 

 

 

 

SCHEMATIC DIAGRAM

 

 

 

 

 

PCB

 

PRS

 

LGPS

 

 

 

 

 

 

 

 

 

 

 

 

(NATURAL GAS & PROPANE)

 

 

 

 

 

JUMPER SELECT

 

 

 

 

 

L1

 

 

L2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #2

 

GND

 

EQUIPMENT GROUND

 

PRINTED

 

 

J2

90

120

 

 

ORN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPARE-2

 

MED LO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ILK

 

 

 

 

 

 

LO

 

 

CAP-1

 

CIRCIUT

G

 

 

150

 

 

 

 

 

 

NOTE #11

 

 

 

 

 

 

 

 

HEAT

 

MED HI

 

 

 

 

 

Com

 

 

 

 

 

 

 

 

 

 

YEL

 

 

L1

 

 

 

HI/LO

 

 

 

 

 

L2

 

 

 

 

180

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPARE-1

 

HI

 

 

 

 

 

24V

 

 

 

BLU

 

 

 

 

BLU

 

 

 

 

 

 

 

 

 

 

 

OL

START

 

 

BOARD

W

 

 

 

J1

 

 

 

 

 

 

 

M

GV

 

BLWR

 

 

 

 

COOL NOTE #10

 

 

EAC-2

 

 

 

 

 

 

ORN

 

 

LS

 

FRS

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM

 

 

 

 

Y

 

 

TEST/TWIN

 

 

RED

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLWM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

HUM

 

 

 

 

 

 

 

 

GRN/YEL

 

 

 

 

EAC-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HSIR

 

 

 

 

 

 

 

 

 

 

FU1

 

 

 

 

 

 

 

RED

 

 

 

NOTE #3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #6

 

 

 

 

 

 

 

 

GRN/YEL

 

 

 

 

 

IDR

 

 

 

1

 

1

HSI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

101198

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IDM

 

 

 

 

 

LED 1

RED

 

 

 

TRAN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUX

 

 

 

SEC-2

 

SEC-1

 

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

PL2

2

PL3

2

 

 

 

OL

 

 

 

 

 

 

 

 

 

 

 

BLU

 

 

BLK

 

 

 

 

 

PR1

115VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EAC-2

L2

7

WHT

 

 

 

 

 

WHT

 

 

 

 

 

TRAN

 

 

 

 

 

 

 

 

 

 

NOTE#8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

432 5 6

RED

 

 

 

 

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NEUTRAL

 

 

 

 

 

PL4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

CAP - 2

 

 

 

 

 

YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GRN/YEL

 

 

 

 

 

 

CAP -2

 

 

 

 

 

 

24VAC

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

GRN/YEL

 

 

 

 

BRN

BRN

 

 

TEST/TWIN

 

 

 

 

 

PL4

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLW

 

 

 

1

WHT

 

 

3

 

WHT

 

AUX

 

 

 

F U 1 NOTE #6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PL1

 

 

FSE

 

 

 

 

M

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GRN/YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PL2

 

 

2

 

 

IDM

 

PRINTED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COOL

 

 

L1

 

 

 

 

 

PL3

 

OL

 

 

 

 

 

SEC-1

 

SEC-2

 

 

 

 

FRS

LS

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

BHT/CLR

BLWR

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

1

 

 

 

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPARE 1

 

 

SPARE 2

EAC-1

 

 

BLK

 

 

WHT

2

HSI

 

CIRCIUT

 

 

 

 

 

 

 

 

 

 

LGPS

(WHEN USED)

 

HEAT

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

1

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PR1

 

 

 

 

 

 

 

 

BOARD

W

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHT

BLK (HI)

 

 

WHT

(COM)

 

 

WHT

 

 

 

HUM

 

 

 

 

 

 

 

PL1

 

NOTE #11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(COM)

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PRS

 

 

 

 

 

 

 

 

BLWM

 

 

 

 

FUSED OR CIRCUIT BREAKER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GRN/YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YEL

 

 

 

 

 

JB

 

DISCONNECT SWITCH (WHEN REQ’D)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(MED HI)

 

 

 

 

BRN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

WHT

 

 

 

WHT

 

 

NEUTRAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FU2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #10

 

START

CAP -1

 

 

 

 

 

 

 

 

 

 

 

 

 

GVR-1

 

10

 

 

GV

 

 

 

 

 

 

 

BLK

 

 

L1

 

 

 

 

 

 

 

 

 

M

 

 

 

 

RED (LO)

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLU

 

 

 

ILK

 

 

 

 

 

 

 

 

 

 

 

CPU

 

 

 

 

 

 

 

 

 

 

 

 

 

BRN

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Y

 

 

 

 

 

 

 

5

 

 

C

 

 

(MED LO)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE #3

L

BHT/CLR

BLOWER MOTOR SPEED CHANGE RELAY, SPDT

 

OL

AUTO-RESET INTERNAL MOTOR OVERLOAD

 

G

 

 

 

 

 

 

 

1

 

 

 

 

 

 

TEMPERATURE SWITCH (N.C.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E BLWR

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PCB

PRINTED CIRCUIT BOARD CONTROL

 

 

 

 

 

 

 

 

 

9

 

FSE

 

 

G

BLWM

 

BLOWER MOTOR, PERMANENT-SPLIT-CAPACITOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PL1

11-CIRCUIT PCB CONNECTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAP 1,2

CAPACITOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E CPU

 

MICROPROCESSOR AND CIRCUITRY

 

 

PL2

2-CIRCUIT CONNECTOR

 

 

COM

 

 

 

 

 

 

 

7

 

 

 

 

N EAC-1

 

ELECTRONIC AIR CLEANER CONNECTION (115 VAC 1.0 AMP MAX.)

PL3

2-CIRCUIT HSI, CONNECTOR

 

 

PCB

 

 

 

 

 

3

 

 

 

 

 

PL4

3-CIRCUIT IDM EXTENSION CONNECTOR

 

24V

 

 

 

 

 

 

 

 

 

D

EAC-2

 

ELECTRONIC AIR CLEANER CONNECTION (COMMON)

 

 

 

NOTE #5

 

 

 

 

 

 

 

 

 

 

PRS

PRESSURE SWITCH, SPST-(N.O.)

 

 

 

 

 

 

 

11

 

 

 

 

 

FRS

 

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

 

 

NOTES:

 

 

 

 

 

 

 

 

 

 

 

FSE

 

FLAME-PROVING ELECTRODE

 

 

TEST/TWIN

 

COMPONENT TEST & TWIN TERMINAL

 

 

 

 

 

 

 

 

 

 

 

 

FU 1

 

FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE, FACTORY INSTALLED

 

TRAN

TRANSFORMER-115VAC/24VAC

 

1.

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

 

 

 

FU 2

 

FUSE OR CIRCUIT BREAKER CURRENT INTERRUPT DEVICE

 

 

JUNCTION

 

 

 

 

 

 

 

 

 

 

 

 

2.

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

 

 

 

 

(FIELD INSTALLED & SUPPLIED)

 

 

 

 

 

 

 

 

 

 

 

 

 

UNMARKED TERMINAL

 

3.

This wire must be connected to furnace sheet metal for control to prove flame.

 

 

 

GND

 

EQUIPMENT GROUND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Symbols are electrical representation only.

 

 

 

 

 

 

 

GV

 

GAS VALVE-REDUNDANT

 

 

 

 

PCB CONTROL TERMINAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.

Solid lines inside PCB are printed circuit board conductors and are not included in legend.

 

 

GVR 1, 2

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

 

 

 

 

 

 

 

 

 

 

 

 

 

FACTORY WIRING (115VAC)

 

6.

Replace only with a 3 amp fuse.

 

 

 

 

 

 

 

 

 

HSI

 

HOT SURFACE IGNITER (115 VAC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FACTORY WIRING (24VAC)

 

7.

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

 

HSIR

 

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

 

 

 

 

 

 

 

 

 

 

8.

Neutral connections are interchangeable within the NEUTRAL connector block.

 

 

 

HUM

 

24VAC HUMIDIFIER CONNECTION (0.5 AMP. MAX.)

 

 

FIELD WIRING (115VAC)

 

 

 

 

 

 

 

 

9.

Blower motor speed selections are for average conditions, see installation instructions for details on

 

IDM

 

INDUCED DRAFT MOTOR, PSC

 

 

 

 

 

 

 

 

 

 

 

 

 

FIELD WIRING (24VAC)

 

 

optimum speed selection.

 

 

 

 

 

 

 

 

 

IDR

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONDUCTOR ON CONTROL PCB

 

10. YELLOW lead not on all motors.

 

 

 

 

 

 

 

 

ILK

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11. Factory connected when LGPS is not used.

 

 

 

 

 

 

 

J1

 

BLOWER - OFF DELAY JUMPER SELECTOR

 

 

 

FIELD WIRING SCREW TERMINAL

 

 

 

 

 

 

 

 

 

 

 

 

 

12. Ignition-lockout will occur after four consecutive unsuccessful trials-for-ignition. Control will

 

 

J2

 

COOLING - OFF DELAY JUMPER

 

 

 

FIELD EARTH GROUND

 

 

auto-reset after three hours.

 

 

 

 

 

 

 

 

 

JB

 

JUNCTION BOX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EQUIPMENT GROUND

 

13. Blower-on delay: gas heating 60 seconds, cooling or heat pump 2 seconds.

 

 

 

LED

 

LIGHT-EMITTING DIODE FOR STATUS CODES - RED

 

 

 

14. Blower-off delay: gas heating selections are 90, 120, 150 or 180 seconds, cooling or heat pump

 

 

 

 

 

 

 

 

 

 

LGPS

 

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

 

 

 

FIELD SPLICE

 

 

 

 

90 seconds or 5 seconds when J2 is cut.

 

 

 

 

 

 

 

LS

 

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

 

 

 

PLUG RECEPTACLE

 

 

 

 

 

 

 

 

 

 

 

 

328150-101 REV. A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 30—Wiring Diagram

A02271

Image 21
Contents Safety Considerations Electrostatic Discharge ESD PrecautionsMultipoise Orientations Unit Size DimensionsII. General Installation SafetyVI. GAS Piping and GAS Pipe Pressure Testing Codes and StandardsVII. Electrical Connections Electrostatic Discharge ESD PrecautionsApplications IntroductionGeneral II. Upflow ApplicationsCondensate Trap Tubing Factory-Shipped Orientation Pressure Switch TubingCondensate Trap Location Alternate Upflow Orientation Condensate Trap Tubing Alternate Upflow OrientationIII. Downflow Applications Condensate Trap LocationCondensate Trap Tubing Horizontal Left Tube Configuration IV. Horizontal Left SUPPLY-AIR Discharge Applications Construct a Working PlatformHorizontal Right SUPPLY-AIR Discharge Applications Attic Location and Working Platform Location II. Furnace Location Relative to Cooling Equipment Furnace Location for Proper Condensate DrainageInstallation Leveling Legs if Desired II. Installation in Upflow or Downflow ApplicationsIII. Installation in Horizontal Applications III. Hazardous LocationsOpening Dimensions Furnace Plenum Opening Floor Opening CasingWidth II. Ductwork Acoustical Treatment Duct FlangesIV. Return AIR Connections III. Supply AIR ConnectionsFilter Arrangement Filter InformationVII. GAS Piping VI. Bottom Closure PanelMaximum Capacity of Pipe Casings onlyElectrical Connections Fire or Explosion HazardIII Accessories WiringPCB Direct Venting Electrical DataRemoval of Existing Furnaces from Common Vent Systems II. COMBUSTION-AIR and Vent PipingControl Center Clearance FT COMBUSTION-AIR and Vent Pipe Termination ClearancesCombustion-Air and Vent Pipe Diameter ExampleCombustion-Air and Vent Pipe Attachment Short Vent 5 to 8 Ft System COMBUSTION-AIR Intake Housing Plug FittingAltitude FT Maximum Allowable Pipe Length FT6001 to 7000‡ Air Intake Housing Plug Fitting Drain Vent Extension Pipe Extended Exposed Sidewall PipesTwo-Pipe Termination Kit IV. Multiventing and Vent Terminations Concentric Vent/Air Termination KitRoof Termination Preferred Sidewall Termination of 12 in. or Less Condensate Drain General II. ApplicationIII. Condensate Drain Protection II. Cooling Mode Heating ModeIII. Continuous Blower Mode IV. Heat Pump ModeIV. Adjustments START-UP Procedures GeneralComponent Test II. Prime Condensate Trap with WaterInducer Housing Drain Cap BTU/CU FT Orifice Manifold 625 650 Only 7001 675 725 8000 775 750 15% 825 2001to 725 750 Only 4001 775 800 825 5000 875 850 900 925 Altitude Derate Multiplier Example 100,000 Btuh Input Furnace Installed AT 4300 FTUnited States CanadaCheck Safety Controls Blower OFF Delay Setup PositionGAS Rate CU FT/HR Speed SelectorII. Check Pressure Switch ChecklistCheck Primary Limit Control CHECKLIST-START-UP CHECKLIST-INSTALLATIONLoad Calculation Combustion AIR Vent Piping
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340MAV specifications

The Bryant 340MAV is a standout model in the Bryant lineup, designed to provide exceptional comfort, efficiency, and performance for residential heating and cooling needs. This unit offers a perfect blend of innovative technology and user-friendly features, making it an ideal choice for homeowners seeking reliability and quality.

One of the defining characteristics of the Bryant 340MAV is its impressive efficiency rating. With a SEER (Seasonal Energy Efficiency Ratio) of up to 18, this model ensures that homeowners can enjoy effective cooling during the summer months while minimizing energy consumption. Similarly, the heating efficiency is notable, with a high AFUE (Annual Fuel Utilization Efficiency) rating. This makes the 340MAV an environmentally friendly option that also promotes cost savings on energy bills.

The 340MAV incorporates advanced technologies that enhance its performance. One such technology is the variable-speed compressor, which allows the system to adjust its output based on the demands of the home. This means that the unit operates more quietly and reduces energy usage by matching the cooling or heating output required. Additionally, the two-stage heating capability provides more consistent temperatures and improved comfort throughout the space.

Operating noise is a crucial factor in residential HVAC systems, and the Bryant 340MAV is designed with this in mind. Engineered for quiet operation, the unit features a sound-dampening design, including an insulated cabinet and a specially designed compressor that minimizes noise levels. Homeowners can enjoy a comfortable indoor climate without the disruptive racket often associated with traditional systems.

Furthermore, the Bryant 340MAV is equipped with a durable all-aluminum coil, which improves heat transfer efficiency while also being resistant to corrosion. This characteristic contributes to the longevity of the unit, ensuring that it can withstand various environmental factors without compromising performance.

Another key feature is the advanced control options that the Bryant 340MAV offers. Integration with smart thermostats allows homeowners to monitor and adjust their HVAC system remotely, ensuring optimal comfort at all times. Additionally, the system is compatible with Bryant's Perfect Airâ„¢ filtration system, enhancing indoor air quality by reducing pollutants and allergens.

In summary, the Bryant 340MAV is a high-efficiency heating and cooling solution that brings together cutting-edge technology, quiet operation, and user-friendly features. With its focus on comfort and energy savings, it stands out as a prime choice for homeowners looking to invest in a reliable HVAC system.