Bryant 120 instruction manual See notes 2, 11, and 12 on the page following these figures

Page 25

7

See notes 1, 2, 3, 4, 12, 13, 14, 15, and 17 on the page following these figures

A03182

Fig. 31 - Dual Fuel Thermostat with Two-Stage Furnace

and Two-Speed Heat Pump

See notes 2, 11, and 12 on the page following these figures

A03183

Fig. 32 - Two-Stage Thermostat with Two-Stage Furnace

and Two-Speed Air Conditioner

312A

See notes 1 and 2 on the page following these figures

A03184

Fig. 33 - Single-Stage Thermostat with Two-Stage Furnace and Two-Speed Air Conditioner

NOTES: For Figures 25---31

1.Heat pump MUST have a high pressure switch for dual fuel applications.

2.Refer to outdoor equipment Installation Instructions for additional information and setup procedure.

3.Outdoor Air Temperature Sensor must be attached in all dual fuel applications.

4.Dip switch No. 1 on Thermidistat should be set in OFF position for air conditioner installations. This is factory default.

5.Dip switch No. 1 on Thermidistat should be set in ON position for heat pump installations.

6.Dip switch No. 2 on Thermidistat should be set in OFF position for single---speed compressor operation. This is factory default.

7.Dip switch No. 2 on Thermidistat should be set in ON position for two---speed compressor operation.

8.Configuration Option No. 10 “Dual Fuel Selection” must be turned ON in all dual fuel applications.

9.NO connection should be made to the furnace HUM terminal when using a Thermidistat.

10.Optional connection: If wire is connected, dip switch SW1---2 on furnace control should be set in ON position to allow Thermidistat/Thermostat to control furnace staging.

11.Optional connection: If wire is connected, ACRDJ jumper on furnace control should be removed to allow Thermidistat/Thermostat to control outdoor unit staging.

12.When using both a two---stage furnace and a two---stage heat pump, the furnace must control its own high ---stage heating operation via furnace control algorithm.

13.The RVS Sensing terminal “L” should not be connected. This is internally used to sense defrost operation.

14.DO NOT SELECT the “FURNACE INTERFACE” or “BALANCE POINT” option on the two---speed heat pump control board. This is controlled internally by the Thermidistat/Dual Fuel Thermostat.

15.Dip switch D on Dual Fuel Thermostat should be set in OFF position for single---speed compressor operation. This is factory default.

16.Dip switch D on Dual Fuel Thermostat should be set in ON position for two---speed compressor operation.

25

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Contents Ama Furnace Reliability Hazard Safety ConsiderationsCUT Hazard Introduction DimensionsWidth Bottom Flue Cabinet SizeInstallation Codes and Standards Electrostatic Discharge ESD Precautions ProcedureGeneral LocationCarbon 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 DimensionsFurnace Plenum Opening Floor Opening Casing Opening dimensionsWidth 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 HazardBOX Relocation Electrical DataElectrical 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 Furnace Overheating Hazard Gas Rate cu ft/hrSeconds Size of Test Dial For Revolution Color Speed AS Shipped Speed SelectionStage Furnace Blower OFF delay Setup Switch Check Safety ControlsDesired Heating Mode Setup Switch Blower OFF Delay SEC Checklist Specific Gravity of Natural GAS Altitude RangeBTUH/CU Gravity6001 to BTUH/CU FT Specific Gravity of Natural GAS Altitude RangeSpecific 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 Thermidistat Mode Single-Stage Thermostat and Two-Speed Cooling Adaptive ModeSingle-Speed Cooling Troubleshooting Wiring DiagramsContinuous 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.

In terms of technology, the Bryant 120 incorporates advanced controls that enhance user experience and system performance. The system comes equipped with smart thermostats that allow homeowners to monitor and adjust their environment remotely. These thermostats not only provide convenience but also help in optimizing energy usage by learning the household's heating and cooling patterns.

Another characteristic of the Bryant 120 is its durable construction. The unit is built to withstand various weather conditions, featuring a robust cabinet and components designed for longevity. This durability ensures that homeowners can rely on the system for years without the need for frequent repairs or replacements.

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.

Additionally, the Bryant 120 supports eco-friendly refrigerants that comply with environmental standards, contributing to a reduction in greenhouse gas emissions. This commitment to sustainability reflects Bryant's dedication to creating products that are not only effective but also responsible.

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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