Bryant 120 Service and Maintenance Procedures, Electrical SHOCK, Fire or Explosion Hazard

Page 45

Table 16 - Orifice Size and Manifold Pressure for Gas Input Rate (cont.)

(Tabulated Data Based on 21,000 Btuh High-Heat/14,500 Btuh for Low-Heat Per Burner, Derated 4% for Each 1000 Ft Above

Sea level)

 

 

 

AVG. GAS

 

 

 

SPECIFIC GRAVITY OF NATURAL GAS

 

 

 

ALTITUDE RANGE

HEAT VALUE

 

0.58

 

0.60

 

0.62

 

0.64

 

(FT)

AT ALTITUDE

 

 

 

 

 

 

 

 

 

 

 

 

 

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

 

 

 

(BTUH/CU FT)

No.

 

Pressure

No.

 

Pressure

No.

 

Pressure

No.

 

Pressure

 

 

 

675

44

 

3.5/1.7

43

 

3.2/1.5

43

 

3.3/1.6

43

 

3.4/1.6

 

 

 

700

44

 

3.3/1.6

44

 

3.4/1.6

44

 

3.5/1.7

43

 

3.2/1.5

 

 

 

725

45

 

3.7/1.8

45

 

3.8/1.8

44

 

3.3/1.6

44

 

3.4/1.6

U.S.A.

 

6001 to

750

46

 

3.6/1.7

46

 

3.8/1.8

45

 

3.7/1.8

45

 

3.8/1.8

Only

 

7000

775

46

 

3.4/1.6

46

 

3.5/1.7

46

 

3.6/1.7

46

 

3.8/1.8

 

 

 

800

47

 

3.6/1.7

47

 

3.8/1.8

46

 

3.4/1.6

46

 

3.5/1.7

 

 

 

825

47

 

3.4/1.6

47

 

3.5/1.7

47

 

3.6/1.7

47

 

3.8/1.8

 

 

 

850

48

 

3.7/1.7

48

 

3.8/1.8

47

 

3.4/1.6

47

 

3.5/1.7

 

 

 

AVG. GAS

 

 

 

SPECIFIC GRAVITY OF NATURAL GAS

 

 

 

ALTITUDE RANGE

 

0.58

 

0.60

 

0.62

 

0.64

HEAT VALUE

 

 

 

 

 

(FT)

 

 

 

 

 

 

 

 

 

 

 

 

 

AT ALTITUDE )

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

 

 

 

No.

 

Pressure

No.

 

Pressure

No.

 

Pressure

No.

 

Pressure

 

 

 

 

 

 

 

 

 

 

 

650

44

 

3.3/1.6

44

 

3.4/1.6

44

 

3.5/1.7

43

 

3.2/1.5

 

 

 

675

45

 

3.7/1.8

45

 

3.8/1.8

44

 

3.3/1.6

44

 

3.4/1.6

 

 

 

700

46

 

3.6/1.7

46

 

3.7/1.8

46

 

3.8/1.8

45

 

3.8/1.8

U.S.A.

 

7001 to

725

47

 

3.8/1.8

46

 

3.5/1.7

46

 

3.6/1.7

46

 

3.7/1.8

Only

 

8000

750

47

 

3.5/1.7

47

 

3.7/1.8

47

 

3.8/1.8

46

 

3.5/1.6

 

 

 

775

48

 

3.8/1.8

47

 

3.4/1.6

47

 

3.6/1.7

47

 

3.7/1.7

 

 

 

800

48

 

3.6/1.7

48

 

3.7/1.8

48

 

3.8/1.8

47

 

3.4/1.6

 

 

 

825

48

 

3.3/1.6

48

 

3.5/1.6

48

 

3.6/1.7

48

 

3.7/1.8

 

 

 

 

 

 

 

SPECIFIC GRAVITY OF NATURAL GAS

 

 

 

ALTITUDE RANGE

 

 

0.58

 

0.60

 

0.62

 

0.64

 

(FT)

 

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

 

 

 

 

No.

 

Pressure

No.

 

Pressure

No.

 

Pressure

No.

 

Pressure

 

 

 

625

45

 

3.7/1.8

45

 

3.8/1.8

44

 

3.3/1.6

44

 

3.4/1.6

 

 

 

650

46

 

3.6/1.7

46

 

3.7/1.8

46

 

3.8/1.8

45

 

3.8/1.8

U.S.A.

 

8001 to

675

47

 

3.8/1.8

46

 

3.4/1.6

46

 

3.5/1.7

46

 

3.7/1.7

 

700

47

 

3.5/1.7

47

 

3.6/1.7

47

 

3.7/1.8

46

 

3.4/1.6

Only

 

9000

 

 

 

 

 

725

48

 

3.7/1.8

48

 

3.8/1.8

47

 

3.5/1.7

47

 

3.6/1.7

 

 

 

 

 

 

 

 

 

 

750

48

 

3.5/1.7

48

 

3.6/1.7

48

 

3.7/1.8

48

 

3.8/1.8

 

 

 

775

49

 

3.8/1.8

48

 

3.4/1.6

48

 

3.5/1.7

48

 

3.6/1.7

ALTITUDE RANGE

AVG GAS

 

 

 

SPECIFIC GRAVITY OF NATURAL GAS

 

 

 

HEAT VALUE

 

0.58

 

0.60

 

0.62

 

0.64

 

(FT)

AT ALTITUDE

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

 

 

 

(BTU/CU FT)

No.

 

Pressure

No.

 

Pressure

No.

 

Pressure

No.

 

Pressure

 

 

 

600

46

3.6/1.7

46

3.7/1.8

46

3.8/1.8

45

3.7/1.8

 

 

 

625

47

3.7/1.8

47

3.8/1.8

46

3.5/1.7

46

3.6/1.7

U.S.A.

 

9001 to

650

47

3.4/1.6

47

3.6/1.7

47

3.7/1.8

47

3.8/1.8

Only

10,000

675

48

3.6/1.7

48

3.8/1.8

47

3.4/1.6

47

3.5/1.7

 

 

 

700

48

3.4/1.6

48

3.5/1.7

48

3.6/1.7

48

3.7/1.8

 

 

 

725

49

3.7/1.8

49

3.8/1.8

48

3.4/1.6

48

3.5/1.7

* Orifice numbers 43 are factory installed

 

 

 

 

SERVICE AND MAINTENANCE

 

 

 

 

 

!

WARNING

 

 

PROCEDURES

 

 

 

 

 

ELECTRICAL SHOCK, FIRE OR EXPLOSION

 

!

WARNING

 

 

 

 

 

HAZARD

 

 

 

 

 

Failure to follow this warning could result in personal injury

 

FIRE, PERSONAL INJURY AND UNIT DAMAGE

 

 

 

or death, or property damage.

 

HAZARD

 

 

 

 

 

Before servicing, disconnect all electrical power to furnace.

 

Failure to follow this warning could result in personal injury,

 

 

 

Verify proper operation after servicing.

 

death and/or property damage.

 

 

 

 

 

 

The ability to properly perform maintenance on this equipment requires certain knowledge, mechanical skills, tools, and equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment other than those procedures recommended in the User’s Manual.

312A

45

Page 44 Page 46
Image 45
Page 44 Page 46
Contents Ama Safety Considerations Furnace Reliability HazardCUT Hazard Introduction DimensionsWidth Bottom Flue Cabinet SizeInstallation Codes and Standards Electrostatic Discharge ESD Precautions ProcedureLocation GeneralCarbon Monoxide Poisoning and Unit Damage Hazard Fire Hazard FIRE, Injury or Death HazardProperty Damage Hazard Location Relative to Cooling EquipmentFurnace Corrosion Hazard AIR for Combustion VentilationCarbon Monoxide Poisoning Hazard Outdoor Combustion Air MethodAir for Combustion, Ventilation and Dilution for Outdoors Upflow Installation InstallationHorizontal Installation Downflow InstallationFIRE, EXPLOSION, and Carbon Monoxide Poisoning Hazard Suspended Furnace SupportRoll-Out Protection Floor and Plenum Opening DimensionsOpening dimensions Furnace Plenum Opening Floor Opening CasingWidth Horizontal Unit Suspension AIR Ducts Filter Arrangement Carbon Monoxide Poisoning HazardGeneral Requirements Ductwork Acoustical Treatment Supply Air ConnectionsSpeed External Static Pressure IN. WC Size Inlet Air Delivery CFM With Filter2380 2285 2200 2085 1970 1835 Downflow Furnaces Air Delivery CFM With Filter*Return Air Connections GAS Piping Fire or Explosion HazardUpflow Return Air Configurations and Restrictions Furnace Damage Hazard Maximum Capacity of PipeElectrical Connections Electrical Shock and Fire Hazard WiringElectrical Shock Hazard Furnace MAY not Operate HazardElectrical Data BOX RelocationElectrical Connection to J-BOX BX. Cable Installation in Furnace J-BOX Power Cord Installation in Furnace J-BOXElectrical Box on Furnace Casing Side. See Fig Fire or Electrical Shock HazardTwo-Stage Furnace with Two-Speed Air Conditioner See notes 2, 11, and 12 on the page following these figures Venting AccessoriesMasonry Chimney Requirements General Venting RequirementsChimney Inspection Chart Vent Height Internal Area of Chimney Appliance Application RequirementsUpflow Application-Vent Elbow Up Downflow Application-Vent Elbow Up Horizontal Right Application Vent Elbow Right Orientation Tion PUTBTUH/HR Diameter Height FT Furnace Vent OrientaBurn Hazard Rounded End of KnockoutStart-Up Procedures START-UP, ADJUSTMENT, and Safety CheckGeneral Fire and Explosion HazardStage Furnace Setup Switch Description AdjustmentsU.S Altitude Derate Multiplier for U.S.ARedundant Automatic Gas Control Valve Gas Rate cu ft/hr Furnace Overheating HazardSeconds Size of Test Dial For Revolution Color Speed AS Shipped Speed SelectionCheck Safety Controls Stage Furnace Blower OFF delay Setup SwitchDesired Heating Mode Setup Switch Blower OFF Delay SEC Checklist Specific Gravity of Natural GAS Altitude RangeBTUH/CU Gravity6001 to Specific Gravity of Natural GAS Altitude Range BTUH/CU FTSpecific Gravity of Natural GAS Altitude Range Heat Value Electrical SHOCK, Fire or Explosion Hazard Service and Maintenance ProceduresFIRE, Personal Injury and Unit Damage Specific Gravity of Natural GAS Heat Value AT AltitudeElectrical Controls and Wiring Electrical Shock Hazard Care and MaintenanceIntroduction Unit Operation HazardService Wiring Diagram Filter size information Cleaning AND/OR Replacing AIR FilterBlower Motor and Wheel Electrical Shock Hazard Furnace Filter Size CasingUnit Damage Hazard Cleaning Heat ExchangerIgniter Position Top View Sequence of OperationTwo-Stage Heating Adaptive mode with Single-Stage Thermostat Single-Stage Thermostat and Two-Speed Cooling Adaptive Mode Thermidistat ModeSingle-Speed Cooling Wiring Diagrams TroubleshootingContinuous Blower Mode Troubleshooting Guide 2-Speed Blocked vent shutoff switch used in Chimney Adapter Kit Page Catalog No. II312A---45---8

120 specifications

The Bryant 120 is a remarkable system designed for residential and commercial heating and cooling needs, showcasing an impressive blend of efficiency, reliability, and advanced technology. As a part of Bryant's extensive line of HVAC solutions, the Bryant 120 stands out with its features and performance, making it an ideal choice for those seeking comfort year-round.

One of the main features of the Bryant 120 is its exceptional energy efficiency. It boasts a high Seasonal Energy Efficiency Ratio (SEER) rating, enabling homeowners to save on energy costs while enjoying consistent temperature control. This efficiency is aided by its variable-speed compressor, which allows the system to adjust its output based on current requirements, optimizing both energy consumption and comfort.

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Noise levels are also a critical consideration in HVAC systems, and the Bryant 120 addresses this with its quiet operation. The system is designed to minimize sound output, making it suitable for residential areas where noise can be a concern. This is particularly beneficial for nighttime use, providing a comfortable sleeping environment.

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Overall, the Bryant 120 encapsulates a harmonious balance of efficiency, advanced technology, durability, and quiet operation. Whether for a new installation or a replacement, the Bryant 120 presents an ideal solution to meet diverse heating and cooling requirements, enhancing comfort while prioritizing energy savings and environmental responsibility.
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