Altitude Range, Specific Gravity of Natural GAS | Bryant 120

312A

Table 15 – Orifice Size and Manifold Pressure for Gas Input Rate

(Tabulated Data Based on 22,000 Btuh High-Heat/14,500 Btuh for Low-Heat per Burner, Derated 4% for Each 1000 Ft Above Sea

Level)

ALTITUDE RANGE			AVG. GAS				SPECIFIC GRAVITY OF NATURAL GAS
ALTITUDE RANGE			HEAT VALUE		0.58			0.60			0.62			0.64
	(FT)		(BTUH/CU	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold
			FT)	No.		Pressure	No.		Pressure	No.		Pressure	No.		Pressure
			900	42		3.5/1.5	42		3.6/1.6	42		3.7/1.6	41		3.5/1.5
			925	42		3.3/1.4	42		3.4/1.5	42		3.5/1.5	42		3.7/1.6
			950	43		3.8/1.7	42		3.3/1.4	42		3.4/1.5	42		3.5/1.5
U.S.A.			975	43		3.6/1.6	43		3.8/1.6	42		3.2/1.4	42		3.3/1.4
and		0 to 2000	1000	43		3.5/1.5	43		3.6/1.6	43		3.7/1.6	43		3.8/1.7
Canada			1025	43		3.3/1.4	43		3.4/1.5	43		3.5/1.5	43		3.6/1.6
			1050	44		3.6/1.6	43		3.2/1.4	43		3.4/1.5	43		3.5/1.5
			1075	44		3.4/1.5	44		3.5/1.5	43		3.2/1.4	43		3.3/1.4
			1100	44		3.3/1.4	44		3.4/1.5	44		3.5/1.5	43		3.2/1.4
			AVG. GAS				SPECIFIC		GRAVITY	OF NATURAL GAS
ALTITUDE RANGE			HEAT VALUE		0.58			0.60			0.62			0.64
	(FT)		(BTUH/CU
	(FT)		(BTUH/CU	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold
			FT)	No.		Pressure	No.		Pressure	No.		Pressure	No.		Pressure
		U.S.A.	800	42		3.4/1.5	42		3.5/1.5	42		3.6/1.6	42		3.7/1.6
		U.S.A.	825	42		3.2/1.4	42		3.3/1.4	42		3.4/1.5	42		3.5/1.5
		Altitudes
		Altitudes	850	43		3.7/1.6	43		3.8/1.6	42		3.2/1.4	42		3.3/1.4
		2001 to
U.S.A.		2001 to	875	43		3.5/1.5	43		3.6/1.6	43		3.7/1.6	43		3.8/1.7
U.S.A.		3000 or	875	43		3.5/1.5	43		3.6/1.6	43		3.7/1.6	43		3.8/1.7
and		3000 or	900	43		3.3/1.4	43		3.4/1.5	43		3.5/1.5	43		3.6/1.6
and		Canada	900	43		3.3/1.4	43		3.4/1.5	43		3.5/1.5	43		3.6/1.6
Canada
			925	44		3.5/1.5	43		3.2/1.4	43		3.3/1.4	43		3.4/1.5
		Altitudes	925	44		3.5/1.5	43		3.2/1.4	43		3.3/1.4	43		3.4/1.5
		2001 to	950	44		3.4/1.5	44		3.5/1.5	44		3.6/1.6	43		3.2/1.4
		4500	975	44		3.2/1.4	44		3.3/1.4	44		3.4/1.5	44		3.5/1.5
			1000	45		3.7/1.6	45		3.8/1.7	44		3.2/1.4	44		3.4/1.5
			AVG. GAS				SPECIFIC		GRAVITY	OF NATURAL GAS
ALTITUDE RANGE			HEAT VALUE		0.58			0.60			0.62			0.64
	(FT)		(BTUH/CU	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold
			FT)	No.		Pressure	No.		Pressure	No.		Pressure	No.		Pressure
			775	42		3.2/1.4	42		3.3/1.4	42		3.4/1.5	42		3.5/1.5
			800	43		3.6/1.6	43		3.8/1.6	42		3.2/1.4	42		3.3/1.4
			825	43		3.4/1.5	43		3.5/1.5	43		3.7/1.6	43		3.8/1.6
U.S.A.		3001 to	850	43		3.2/1.4	43		3.3/1.4	43		3.4/1.5	43		3.6/1.5
Only		4000	875	44		3.5/1.5	44		3.6/1.6	43		3.3/1.4	43		3.4/1.5
			900	44		3.3/1.4	44		3.4/1.5	44		3.5/1.5	43		3.2/1.4
			925	45		3.8/1.6	44		3.2/1.4	44		3.3/1.5	44		3.4/1.5
			950	46		3.8/1.6	45		3.7/1.6	45		3.8/1.7	44		3.3/1.4
			AVG. GAS				SPECIFIC		GRAVITY	OF NATURAL GAS
ALTITUDE RANGE			HEAT VALUE		0.58			0.60			0.62			0.64
	(FT)		(BTUH/CU
	(FT)		(BTUH/CU	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold
			FT)	No.		Pressure	No.		Pressure	No.		Pressure	No.		Pressure
			750	43		3.6/1.6	43		3.8/1.6	42		3.2/1.4	42		3.3/1.4
			775	43		3.4/1.5	43		3.5/1.5	43		3.6/1.6	43		3.8/1.6
			800	43		3.2/1.4	43		3.3/1.4	43		3.4/1.5	43		3.5/1.5
U.S.A.		4001 to	825	44		3.4/1.5	44		3.6/1.5	43		3.2/1.4	43		3.3/1.4
Only		5000	850	44		3.2/1.4	44		3.4/1.5	44		3.5/1.5	44		3.6/1.6
			875	45		3.7/1.6	45		3.8/1.7	44		3.3/1.4	44		3.4/1.5
			900	46		3.7/1.6	46		3.8/1.7	45		3.7/1.6	44		3.2/1.4
			925	46		3.5/1.5	46		3.6/1.6	46		3.7/1.6	46		3.8/1.7
			AVG. GAS				SPECIFIC GRAVITY OF NATURAL GAS
			HEAT VALUE
ALTITUDE RANGE			HEAT VALUE		0.58			0.60			0.62			0.64
ALTITUDE RANGE			AT ALTITUDE		0.58			0.60			0.62			0.64
	(FT)		AT ALTITUDE
	(FT)		(BTUH/CU	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold
			(BTUH/CU	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold	Orifice		Manifold
			FT)	No.		Pressure	No.		Pressure	No.		Pressure	No.		Pressure
			725	43	3.4/1.5		43	3.5/1.5		43	3.6/1.6		43	3.7/1.6
			750	43	3.2/1.4		43	3.3/1.4		43	3.4/1.5		43	3.5/1.5
			775	44	3.4/1.5		44	3.5/1.5		43	3.2/1.4		43	3.3/1.4
U.S.A.		5001 to	800	44	3.2/1.4		44	3.3/1.4		44	3.4/1.5		44	3.5/1.5
Only	6000		825	46	3.8/1.7		45	3.8/1.6		44	3.2/1.4		44	3.3/1.4
			850	46	3.6/1.6		46	3.7/1.6		46	3.8/1.7		45	3.8/1.6
			875	47	3.8/1.7		46	3.5/1.5		46	3.6/1.6		46	3.7/1.6
			900	47	3.6/1.6		47	3.8/1.6		46	3.4/1.5		46	3.5/1.5

* Orifice numbers 43 are factory installed

42

Image 42

Bryant 120 instruction manual Specific Gravity of Natural GAS, Btuh/Cu, Altitude Range Heat Value BTUH/CU

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.

Contents

Ama Safety Considerations Furnace Reliability HazardCUT Hazard Width Bottom Flue Cabinet DimensionsIntroduction Size Installation Electrostatic Discharge ESD Precautions Procedure Codes and Standards Location GeneralCarbon Monoxide Poisoning and Unit Damage Hazard Property Damage Hazard FIRE, Injury or Death HazardFire Hazard Location Relative to Cooling Equipment Carbon Monoxide Poisoning Hazard AIR for Combustion VentilationFurnace Corrosion Hazard Outdoor Combustion Air Method Air for Combustion, Ventilation and Dilution for Outdoors Installation Upflow Installation FIRE, EXPLOSION, and Carbon Monoxide Poisoning Hazard Downflow InstallationHorizontal Installation Suspended Furnace Support Floor and Plenum Opening Dimensions Roll-Out Protection Opening dimensions Furnace Plenum Opening Floor Opening CasingWidth Horizontal Unit Suspension General Requirements Filter Arrangement Carbon Monoxide Poisoning HazardAIR Ducts Ductwork Acoustical Treatment Supply Air Connections Air Delivery CFM With Filter Speed External Static Pressure IN. WC Size Inlet 2380 2285 2200 2085 1970 1835 Return Air Connections Air Delivery CFM With Filter*Downflow Furnaces GAS Piping Fire or Explosion Hazard Upflow Return Air Configurations and Restrictions Maximum Capacity of Pipe Furnace Damage Hazard Electrical Shock Hazard WiringElectrical Connections Electrical Shock and Fire Hazard Furnace MAY not Operate Hazard Electrical Data BOX RelocationElectrical Connection to J-BOX Electrical Box on Furnace Casing Side. See Fig Power Cord Installation in Furnace J-BOXBX. Cable Installation in Furnace J-BOX Fire or Electrical Shock Hazard Two-Stage Furnace with Two-Speed Air Conditioner See notes 2, 11, and 12 on the page following these figures Accessories Venting General Venting Requirements Masonry Chimney Requirements Chimney Inspection Chart Appliance Application Requirements Vent Height Internal Area of Chimney Upflow Application-Vent Elbow Up Downflow Application-Vent Elbow Up Horizontal Right Application Vent Elbow Right Furnace Vent Orienta Orientation Tion PUTBTUH/HR Diameter Height FT Rounded End of Knockout Burn Hazard General START-UP, ADJUSTMENT, and Safety CheckStart-Up Procedures Fire and Explosion Hazard U.S AdjustmentsStage Furnace Setup Switch Description Altitude Derate Multiplier for U.S.A Redundant Automatic Gas Control Valve Gas Rate cu ft/hr Furnace Overheating HazardSeconds Size of Test Dial For Revolution Speed Selection Color Speed AS Shipped Check Safety Controls Stage Furnace Blower OFF delay Setup SwitchDesired Heating Mode Setup Switch Blower OFF Delay SEC Checklist BTUH/CU Altitude RangeSpecific Gravity of Natural GAS Gravity 6001 to Specific Gravity of Natural GAS Altitude Range BTUH/CU FTSpecific Gravity of Natural GAS Altitude Range Heat Value FIRE, Personal Injury and Unit Damage Service and Maintenance ProceduresElectrical SHOCK, Fire or Explosion Hazard Specific Gravity of Natural GAS Heat Value AT Altitude Introduction Care and MaintenanceElectrical Controls and Wiring Electrical Shock Hazard Unit Operation Hazard Service Wiring Diagram Blower Motor and Wheel Electrical Shock Hazard Cleaning AND/OR Replacing AIR FilterFilter size information Furnace Filter Size Casing Cleaning Heat Exchanger Unit Damage Hazard Sequence of Operation Igniter Position Top View Two-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